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• Why does filter: blur(0) still cause text to blur under Webkit?

  - by johnkavanagh

  I've come across a bug today that's taken far longer than I would like to admit to identify. Essentially: setting a filter: blur(0) (or the vendor-specific -webkit-filter) on an element should - I believe - mean that no form of blur is applied. However, having tested this today, it would appear that Webkit based browsers still blur the text within any element with either blur(0) or blur(0px) assigned to it. I've knocked together a quick Fiddle here: http://jsfiddle.net/f9rBE/ These are three identical dixs containing text (no custom fonts): This has absolutely nothing assigned Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aliquam facilisis orci in quam venenatis, in tempus ipsum sagittis. Suspendisse potenti. Donec ullamcorper lacus vel odio accumsan, vel aliquam libero tempor. Praesent nec libero venenatis, ultrices arcu non, luctus quam. Morbi scelerisque sit amet turpis sit amet tincidunt. Praesent semper erat non purus pretium consequat. Aenean et iaculis turpis. Curabitur diam tellus, consectetur non massa et, commodo venenatis metus. One has no styles at all assigned, the other two have blur(0) and blur(0px): .no-blur{} .zero-px-blur{ -webkit-filter: blur(0px); -moz-filter: blur(0px); -o-filter: blur(0px); -ms-filter: blur(0px); filter: blur(0px); } .zero-blur{ -webkit-filter: blur(0); -moz-filter: blur(0); -o-filter: blur(0); -ms-filter: blur(0); filter: blur(0); } If you preview this under Chrome/Safari you'll see that the text in the second two are still blurred: A few things worth noting: This unintentional blurring occurs in Safari on iOS7 devices (both iPhones and iPads); It also occurs on Chrome and Safari under OSX; It doesn't happen under FireFox in OSX. Of course, this isn't supported at all in Firefox just yet so it's hard to tell whether the behaviour I'm seeing is intentional/expected behaviour, or whether this is a bug in Webkit? Is it possible that this is only prevalent in higher-density resolution devices (ie: retina MacBook/iPhone/iPad)? With this in mind, how do you actually overwrite an item that has blur applied to it to set it back to non-blurred?

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• Using Apple’s Bonjour service from .NET?

  - by Martín Marconcini

  I have an iPhone app that publishes through Bonjour. The Mac counterpart works, they sync and exchange data. Now I have to port that little Mac app to Windows. I’ve decided to go with .NET (because that’s what I know). The app is not complex, but I’m in the early stages. I need to browse/discover Bonjour services. For this task, I’ve downloaded Mono.Zeroconf and Apple’s latest SDK (which includes a couple of C# Samples). I’m not really pasting code because I’m really copy/pasting the samples. In fact, Mono.Zeroconf has a MZClient.exe that can be used to test “all the API”. My 1st test was -on the same box- open two cmd.exe and launch a MZclient registering a service and on the other, launch it and “discover it”. It doesn’t work. Here’s the server: C:\MZ>MZClient -v -p "_http._tcp 80 mysimpleweb” *** Registering name = 'mysimpleweb', type = '_http._tcp', domain = 'local.' *** Registered name = ‘mysimpleweb’ On the other terminal: c:\MZ>MZClient -v -t "_http._tcp" Creating a ServiceBrowser with the following settings: Interface = 0 (All) Address Protocol = Any Domain = local Registration Type = _http._tcp Resolve Shares = False Hit ^C when you're bored waiting for responses. And that’s it. Nothing happens. I’ve of course tried with different services to no avail. Even played a little bit with that domain thing. Remember this is the same box. I tried on another computer, because this was a VM inside OSX, so I went ahead and tried on a “pure” win XP. Nothing. note: I have Apple Bonjour Service (up and running) and also the Apple SDK (installed later). Given that this didn’t work, I went ahead and decided to try the Apple SDK which has an Interop and a few pre-compiled samples (and its source code). Short story, neither the mDSNBrowser.exe nor the SimpleChat.exe work/see/discover anything. My box is a Win7 under Parallels, but that doesn’t seem to be affecting anything, given that the native XP exhibits the same problems. What am I doing so awfully wrong?

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• Conflict between Jquery Validate and Asp.net MVC

  - by chobo2

  Hi I am using asp.net mvc 2.0 and jquery validate 1.7 (http://bassistance.de/jquery-plugins/jquery-plugin-validation/) What happens is this. A user can click on a link to edit a product. When a user clicks on which product they want to edit a jquery dialog box appears with a form of textboxes and dropdown lists. These html controls have information filled in them. Say if the user chooses to edit the Ipad product a dialog will appear and one of the form textboxes will have "Ipad" in it. Now this form gets rendered on the server side(the form is in a partial view). When loading the dialog box a ajax request is made to get that partial view and in the response part of the ajax call I do something like $('#EditDialog).html(ajaxresponse).dialog({...}); So I would have something like this rendered in my dialog box <form id="EditProduct"> Product Name: <input type="text" value="IPad" name="ProductName" /> </form> Now my jquery validate would be something like this. $("#EditProduct").validate( { errorContainer: "#Errorbox", errorLabelContainer: "#Errorbox ul", wrapper: "li", rules: { ProductName: "required" } }); So I know this works because I use the same validate for add product and if you try to leave ProductName blank it will show a validation error. Now it does not work with the edit one though and I think I know the reason why but not how to fix it. The value for the textbox is "IPad" this is how the Html.TextBoxFor() renders it. However if a user goes and changes the product name to "Iphone" or blank the value never changes. It is always "Ipad" in the html. So I think when the validate goes and looks it goes oh there is a value already in it. It is valid even though in reality it might be blank. When I post to the server through ajax it gets the right value and the server side validation stops it but my entire clientside validation is rendered useless because of this problem as it will never change the html.

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• Migration Core Data error code 134130

  - by magichero

  I want to do migration with 2 core database. I have read apple developer document. For the first database, I add some attributes (string, integer and date properties) to new version database. And follow all steps, I have done migration successfully with the first once. But the second database, I also add attributes (string, integer, date, transformable and binary-data properties) to new version database. And follow all steps (like the first database) but system return an error (134130). Here is the code: if (persistentStoreCoordinator_) { PMReleaseSafely(persistentStoreCoordinator_); } // Notify NSNotificationCenter *nc = [NSNotificationCenter defaultCenter]; [nc postNotificationName:GCalWillMigrationNotification object:self]; // NSString *sourceStoreType = NSSQLiteStoreType; NSString *dataStorePath = [PMUtility dataStorePathForName:GCalDBWarehousePersistentStoreName]; NSURL *storeURL = [NSURL fileURLWithPath:dataStorePath]; BOOL storeExists = [[NSFileManager defaultManager] fileExistsAtPath:dataStorePath]; // NSError *error = nil; NSDictionary *options = [NSDictionary dictionaryWithObjectsAndKeys: [NSNumber numberWithBool:YES], NSMigratePersistentStoresAutomaticallyOption, [NSNumber numberWithBool:YES], NSInferMappingModelAutomaticallyOption, nil]; persistentStoreCoordinator_ = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel:self.managedObjectModel]; [persistentStoreCoordinator_ addPersistentStoreWithType:sourceStoreType configuration:nil URL:storeURL options:options error:&error]; if (error != nil) { abort(); } error is not nil and below is log: Error Domain=NSCocoaErrorDomain Code=134130 "The operation couldn\u2019t be completed. (Cocoa error 134130.)" UserInfo=0x856f790 {URL=file://localhost/Users/greensun/Library/Application%20Support/iPhone%20Simulator/5.0/Applications/D10712DE-D9FE-411A-8182-C4F58C60EC6D/Library/Application%20Support/Promise%20Mail/GCalDBWarehouse.sqlite, metadata={type = immutable dict, count = 7, entries = 2 : {contents = "NSStoreModelVersionIdentifiers"} = {type = immutable, count = 1, values = ( 0 : {contents = ""} )} 4 : {contents = "NSPersistenceFrameworkVersion"} = {value = +386, type = kCFNumberSInt64Type} 6 : {contents = "NSStoreModelVersionHashes"} = {type = immutable dict, count = 2, entries = 0 : {contents = "SyncEvent"} = {length = 32, capacity = 32, bytes = 0xfdae355f55c13fbd0344415fea26c8bb ... 4c1721aadd4122aa} 1 : {contents = "ImportEvent"} = {length = 32, capacity = 32, bytes = 0x7676888f0d7eaff4d1f844343028ce02 ... 040af6cbe8c5fd01} } 7 : {contents = "NSStoreUUID"} = {contents = "51678BAC-CCFB-4D00-AF5C-8FA1BEDA6440"} 8 : {contents = "NSStoreType"} = {contents = "SQLite"} 9 : {contents = "_NSAutoVacuumLevel"} = {contents = "2"} 10 : {contents = "NSStoreModelVersionHashesVersion"} = {value = +3, type = kCFNumberSInt32Type} }, reason=Can't find model for source store} I try a lot of solutions but it does not work. I just add more attributes to 2 new version database, and succeed in migrating once. Thanks for reading and your help.

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• client problems - misaligned expectations & not following SDLC protocols

  - by louism

  hi guys, im having some serious problems with a client on a project - i could use some advice please the short version i have been working with this client now for almost 6 months without any problems (a classified website project in the range of 500 hours) over the last few days things have drastically deteriorated to the point where ive had to place the project on-hold whilst i work-out what to do (this has pissed the client off even more) to be simplistic, the root cause of the issue is this: the client doesnt read the specs i make for him, i code the feature, he than wants to change things, i tell him its not to the agreed spec and that that change will have to be postponed and possibly charged for, he gets upset and rants saying 'hes paid for the feature' and im not keeping to the agreement (<- misalignment of expectations) i think the root cause of the root cause is my clients failure to take my SDLC protocols seriously. i have a bug tracking system in place which he practically refuses to use (he still emails me bugs), he doesnt seem to care to much for the protocols i use for dealing with scope creep and change control the whole situation came to a head recently where he 'cracked it' (an aussie term for being fed-up). the more terms like 'postponed for post-launch implementation', 'costed feature addition', and 'not to agreed spec' i kept using, the worse it got finally, he began to bully me - basically insisting i shut-up and do the work im being paid for. i wrote a long-winded email explaining how wrong he was on all these different points, and explaining what all the SDLC protocols do to protect the success of the project. than i deleted that email and wrote a new one in the new email, i suggested as a solution i write up a list of grievances we both had. we than review the list and compromise on different points: he gets some things he wants, i get some things i want. sometimes youve got to give ground to get ground his response to this suggestion was flat-out refusal, and a restatement that i should just get on with the work ive been paid to do so there you have the very subjective short version. if you have the time and inclination, the long version may be a little less bias as it has the email communiques between me and my client the long version (with background) the long version works by me showing you the email communiques which lead to the situation coming to a head. so here it is, judge for yourself where the trouble started... 1. client asked me why something was missing from a feature i just uploaded, my response was to show him what was in the spec: it basically said the item he was looking for was never going to be included 2. [clients response...] Memo Louis, We are following your own title fields and keeping a consistent layout. Why the big fuss about not adding "Part". It simply replaces "model" and is consistent with your current title fields. 3. [my response...] hi [client], the 'part' field appeared to me as a redundancy / mistake. i requested clarification but never received any in a timely manner (about 2 weeks ago) the specification for this feature also indicated it wasnt going to be included: RE: "Why the big fuss about not adding "Part" " it may not appear so, but it would actually be a lot of work for me to now add a 'Part' field it could take me up to 15-20 minutes to properly explain why its such a big undertaking to do this, but i would prefer to use that time instead to work on completing your v1.1 features as a simplistic explanation - it connects to the change in paradigm from a 'generic classified ad' model to a 'specific attributes for specific categories' model basically, i am saying it is a big fuss, but i understand that it doesnt look that way - after all, it is just one ity-bitty field :) if you require a fuller explanation, please let me know and i will commit the time needed to write that out also, if you recall when we first started on the project, i said that with the effort/time required for features, you would likely not know off the top of your head. you may think something is really complex, but in reality its quite simple, you might think something is easy - but it could actually be a massive trauma to code (which is the case here with the 'Part' field). if you also recalled, i said the best course of action is to just ask, and i would let you know on a case-by-case basis 4. [email from me to client...] hi [client], the online catalogue page is now up live (see my email from a few days ago for information on how it works) note: the window of opportunity for input/revisions on what data the catalogue stores has now closed (as i have put the code up live now) RE: the UI/layout of the online catalogue page you may still do visual/ui tweaks to the page at the moment (this window for input/revisions will close in a couple of days time) 5. [email from client to me...] *(note: i had put up the feature & asked the client to review it, never heard back from them for a few days)* Memo Louis, Here you go again. CLOSED without a word of input from the customer. I don't think so. I will reply tomorrow regarding the content and functionality we require from this feature. 5. [from me to client...] hi [client]: RE: from my understanding, you are saying that the mini-sale yard control would change itself based on the fact someone was viewing for parts & accessories <- is that correct? this change is outside the scope of the v1.1 mini-spec and therefore will need to wait 'til post launch for costing/implementation 6. [email from client to me...] Memo Louis, Following your v1.1 mini-spec and all your time paid in full for the work selected. We need to make the situation clear. There will be no further items held for post-launch. Do not expect us to pay for any further items other than those we have agreed upon. You have undertaken to complete the Parts and accessories feature as follows. Obviously, as part of this process the "mini search" will be effected, and will require "adaption to make sense". 7. [email from me to client...] hi [client], RE: "There will be no further items held for post-launch. Do not expect us to pay for any further items other than those we have agreed upon." a few points to consider: 1) the specification for the 'parts & accessories' feature was as follows: (i.e. [what] "...we have agreed upon.") 2) you have received the 'parts & accessories' feature free of charge (you have paid $0 for it). ive spent two days coding that feature as a gesture of good will i would request that you please consider these two facts carefully and sincerely 8. [email from client to me...] Memo Louis, I don't see how you are giving us anything for free. From your original fee proposal you have deleted more than 30 hours of included features. Your title "shelved features". Further you have charged us twice by adding back into the site, at an addition cost, some of those "shelved features" features. See v1.1 mini-spec. Did include in your original fee proposal a change request budget but then charge without discussion items included in v1.1 mini-spec. Included a further Features test plan for a regression test, a fee of 10 hours that would not have been required if the "shelved features" were not left out of the agreed fee proposal. I have made every attempt to satisfy your your uneven business sense by offering you everything your heart desired, in the v1.1 mini-spec, to be left once again with your attitude of "its too hard, lets leave it for post launch". I am no longer accepting anything less than what we have contracted you to do. That is clearly defined in v1.1 mini-spec, and you are paid in advance for delivering those items as an acceptable function. a few notes about the above email... i had to cull features from the original spec because it didnt fit into the budget. i explained this to the client at the start of the project (he wanted more features than he had budget hours to do them all) nothing has been charged for twice, i didnt charge the client for culled features. im charging him to now do those culled features the draft version of the project schedule included a change request budget of 10 hours, but i had to remove that to meet the budget (the client may not have been aware of this to be fair to them) what the client refers to as my attitude of 'too hard/leave it for post-launch', i called a change request protocol and a method for keeping scope creep under control 9. [email from me to client...] hi [client], RE: "...all your grievances..." i had originally written out a long email response; it was fantastic, it had all these great points of how 'you were wrong' and 'i was right', you would of loved it (and by 'loved it', i mean it would of just infuriated you more) so, i decided to deleted it start over, for two reasons: 1) a long email is being disrespectful of your time (youre a busy businessman with things to do) 2) whos wrong or right gets us no closer to fixing the problems we are experiencing what i propose is this... i prepare a bullet point list of your grievances and my grievances (yes, im unhappy too about how things are going - and it has little to do with money) i submit this list to you for you to add to as necessary we then both take a good hard look at this list, and we decide which areas we are willing to give ground on as an example, the list may look something like this: "louis, you keep taking away features you said you would do" [your grievance 2] [your grievance 3] [your grievance ...] "[client], i feel you dont properly read the specs i prepare for you..." [my grievance 2] [my grievance 3] [my grievance ...] if you are willing to give this a try, let me know will it work? who knows. but if it doesnt, we can always go back to arguing some more :) obviously, this will only work if you are willing to give it a genuine try, and you can accept that you may have to 'give some ground to get some ground' what do you think? 10. [email from client to me ...] Memo Louis, Instead of wasting your time listing grievances, I would prefer you complete the items in v1.1 mini-spec, to a satisfactory conclusion. We almost had the website ready for launch until you brought the v1.1 mini-spec into the frame. Obviously I expected you could complete the v1.1 mini-spec in a two-week time frame as you indicated and give the site a more profession presentation. Most of the problems have been caused by you not following our instructions, but deciding to do what you feel like at the time. And then arguing with us how the missing information is not necessary. For instance "Parts and Accessories". Why on earth would you leave out the parts heading, when it ties-in with the fields you have already developed. It replaces "model" and is just as important in the context of information that appears in the "Details" panel. We are at a stage where the the v1.1 mini-spec needs to be completed without further time wasting and the site is complete (subject to all features working). We are on standby at this end to do just that. Let me know when you are back, working on the site and we will process and complete each v1.1 mini-spec, item by item, until the job is complete. 11. [last email from me to client...] hi [client], based on this reply, and your demonstrated unwillingness to compromise/give any ground on issues at hand, i have decided to place your project on-hold for the moment i will be considering further options on how to over-come our challenges over the next few days i will contact you by monday 17/may to discuss any new options i have come up with, and if i believe it is appropriate to restart work on your project at that point or not told you it was long... what do you think?

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• Opera Mobile, offline web app development, and memory

  - by Jake Krohn

  I'm developing a data collection app for use on a HP iPAQ 211. I'm doing it as an offline web app (go with what you know) using Opera Mobile 9.7 and Google Gears. Being it is an offline app, it is very dependent on Javascript for much of its behavior. I'm using the LocalServer, Database, and Geolocation components of Gears, as well as the JQuery core and a couple of plugins for form validation and other usability tweaks (no jQuery UI). I've tried to be conservative with my programming style and free up or close resources whenever possible, but Opera just slowly dies after about 10-20 minutes of use. The Javascript engine stops responding, pages only half-load, and eventually stop loading completely. I'm guessing it's a resource issue. Quitting and relaunching the browser solves the problem, but only temporarily. The iPAQ ships with 128 MB of RAM, about 85-87 MB of which is available immediately after a reset. With only Opera running, there still remains about 50 MB that is left unused. My questions are thus: Is it possible to get Opera to address this unused RAM? Are there configuration settings in Opera or in the Windows Registry itself that will help improve performance? I know where to tweak, but the descriptions of the opera:config variables that I've found are less than helpful. Is is laughable to ask about memory management and jQuery in the same sentence? If not, does anyone have any suggestions? Finally, are my plans too ambitious, given the platform I have to work with? I know that Gears and Windows Mobile 6 are on their way out, but they (theoretically) suffice for what I need to do. I could ditch them in favor of an iPhone/iPod Touch, Mobile Safari, and HTML5 but I'd like to try to make this work first. I didn't think that Opera was a dog when it comes to JS performance, but perhaps it's worse than I thought. That this motley collection of technologies works at all is a minor miracle, but it needs to be faster and more stable. I appreciate any suggestions.

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• Suggestions for designing large-scale Java webapp from the group up

  - by Chris Thompson

  Hi all, I'm about to start developing a large-scale system and I'm struggling with which direction to proceed. I've done plenty of Java web apps before and I have plenty of experience with servlet containers and GWT and some experience with Spring. The problem is most of my webapps have been thrown together just to be a proof of concept and what I'm struggling with is what set of frameworks to use. I need to have both a browser based application as well as a web service designed to support access from mobile devices (Android and iPhone for now). Ideally, I'd like to design this system in such a way that I don't end up rewriting all of my servlets for each client (browser and phone) although I don't mind having some small checks in there to properly format the data. In addition, although I'm the only developer now, that won't necessarily be the case down the road and I'd like to design something that scales well both with regards to traffic and number of developers (isn't just a nightmare to maintain). So where I am now is planning on using GWT to design the browser-based interface but I'm struggling with how to reuse that code with to present the interface (most likely xml) for the mobile devices. Using GWT RPC would, I think, make it relatively easy to do all of the AJAX in the browser, but might make generating xml for the mobile phones difficult. In addition, I like the idea of using something like Hibernate for persistence and Spring Security to secure the whole thing. Again, I'm not sure how well those will cooperate with GWT (I think Hibernate should be fine...) There's obviously a lot more to this than I've presented here, but I've tried to give you the 5-minute overview. I'm a bit stumped and was wondering if anybody in the community had any experience starting from this place. Does what I'm trying to do make sense? Is it realistic? I have no doubt I can make all of these frameworks speak the same language, I'm just wondering if it's worth my time to fight with them. Also, am I missing a framework that would be really beneficial? Thanks in advance and sorry for the relatively broad question... Chris

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• Suggestions for designing large-scale Java webapp from the ground up

  - by Chris Thompson

  Hi all, I'm about to start developing a large-scale system and I'm struggling with which direction to proceed. I've done plenty of Java web apps before and I have plenty of experience with servlet containers and GWT and some experience with Spring. The problem is most of my webapps have been thrown together just to be a proof of concept and what I'm struggling with is what set of frameworks to use. I need to have both a browser based application as well as a web service designed to support access from mobile devices (Android and iPhone for now). Ideally, I'd like to design this system in such a way that I don't end up rewriting all of my servlets for each client (browser and phone) although I don't mind having some small checks in there to properly format the data. In addition, although I'm the only developer now, that won't necessarily be the case down the road and I'd like to design something that scales well both with regards to traffic and number of developers (isn't just a nightmare to maintain). So where I am now is planning on using GWT to design the browser-based interface but I'm struggling with how to reuse that code with to present the interface (most likely xml) for the mobile devices. Using GWT RPC would, I think, make it relatively easy to do all of the AJAX in the browser, but might make generating xml for the mobile phones difficult. In addition, I like the idea of using something like Hibernate for persistence and Spring Security to secure the whole thing. Again, I'm not sure how well those will cooperate with GWT (I think Hibernate should be fine...) There's obviously a lot more to this than I've presented here, but I've tried to give you the 5-minute overview. I'm a bit stumped and was wondering if anybody in the community had any experience starting from this place. Does what I'm trying to do make sense? Is it realistic? I have no doubt I can make all of these frameworks speak the same language, I'm just wondering if it's worth my time to fight with them. Also, am I missing a framework that would be really beneficial? Thanks in advance and sorry for the relatively broad question... Chris

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• PyQt4: Scrollbar doesn't show in scrollarea when resizing dockWidget

  - by Whospal

  I created a python test program (Test_InfoPanel.py) that has MainWindow with dockWidget, and within it, a tabWidget with scrollArea widget. However, when I resize the MainWindow, the vertical scrollbar doesn't auto-appear when the Similarly, when I undock the dockWidget & resize, the vertical scrollbar doesn't auto-appear. Pls help! Test Program (Test_InfoPanel.py): #!/usr/bin/env python # Filename: Test_InfoPanel.py # Date: 2012-Sep-18 ''' This program test the scrollarea to show scrollbars for the InfoPanel_UI. ''' import sys from PyQt4 import QtCore, QtGui if __name__ == "__main__": import sys app = QtGui.QApplication(sys.argv) # Look and feel changed to 'Cleanlooks'. app.setStyle('Cleanlooks') from InfoPanel_UI import Ui_MainWindow_InfoPanel AppWindow = QtGui.QMainWindow() ui = Ui_MainWindow_InfoPanel() ui.setupUi(AppWindow) ui.tabWidget_Info_Panel.setCurrentWidget(ui.scrollArea_Info_Panel) AppWindow.show() sys.exit(app.exec_()) Generated *.ui script (InfoPanel_UI.py): # -*- coding: utf-8 -*- # Form implementation generated from reading ui file 'InfoPanel.ui' # # Created: Wed Sep 19 13:11:06 2012 # by: PyQt4 UI code generator 4.9.4 # # WARNING! All changes made in this file will be lost! from PyQt4 import QtCore, QtGui try: _fromUtf8 = QtCore.QString.fromUtf8 except AttributeError: _fromUtf8 = lambda s: s class Ui_MainWindow_InfoPanel(object): def setupUi(self, MainWindow_InfoPanel): MainWindow_InfoPanel.setObjectName(_fromUtf8("MainWindow_InfoPanel")) MainWindow_InfoPanel.resize(602, 263) MainWindow_InfoPanel.setDocumentMode(False) self.centralwidget = QtGui.QWidget(MainWindow_InfoPanel) self.centralwidget.setObjectName(_fromUtf8("centralwidget")) MainWindow_InfoPanel.setCentralWidget(self.centralwidget) self.statusbar = QtGui.QStatusBar(MainWindow_InfoPanel) self.statusbar.setObjectName(_fromUtf8("statusbar")) MainWindow_InfoPanel.setStatusBar(self.statusbar) self.dockWidget_Info_Panel = QtGui.QDockWidget(MainWindow_InfoPanel) self.dockWidget_Info_Panel.setMinimumSize(QtCore.QSize(300, 140)) font = QtGui.QFont() font.setBold(True) font.setItalic(True) font.setWeight(75) self.dockWidget_Info_Panel.setFont(font) self.dockWidget_Info_Panel.setLayoutDirection(QtCore.Qt.LeftToRight) self.dockWidget_Info_Panel.setAllowedAreas(QtCore.Qt.LeftDockWidgetArea|QtCore.Qt.RightDockWidgetArea) self.dockWidget_Info_Panel.setObjectName(_fromUtf8("dockWidget_Info_Panel")) self.dockWidgetContents_Info_Panel = QtGui.QWidget() self.dockWidgetContents_Info_Panel.setObjectName(_fromUtf8("dockWidgetContents_Info_Panel")) self.tabWidget_Info_Panel = QtGui.QTabWidget(self.dockWidgetContents_Info_Panel) self.tabWidget_Info_Panel.setGeometry(QtCore.QRect(0, 0, 300, 215)) font = QtGui.QFont() font.setBold(False) font.setItalic(False) font.setWeight(50) self.tabWidget_Info_Panel.setFont(font) self.tabWidget_Info_Panel.setObjectName(_fromUtf8("tabWidget_Info_Panel")) self.tab_1 = QtGui.QWidget() self.tab_1.setObjectName(_fromUtf8("tab_1")) self.scrollArea_Info_Panel = QtGui.QScrollArea(self.tab_1) self.scrollArea_Info_Panel.setGeometry(QtCore.QRect(9, 9, 271, 171)) self.scrollArea_Info_Panel.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAsNeeded) self.scrollArea_Info_Panel.setWidgetResizable(True) self.scrollArea_Info_Panel.setObjectName(_fromUtf8("scrollArea_Info_Panel")) self.scrollAreaWidgetContents = QtGui.QWidget() self.scrollAreaWidgetContents.setGeometry(QtCore.QRect(0, 0, 269, 169)) self.scrollAreaWidgetContents.setObjectName(_fromUtf8("scrollAreaWidgetContents")) self.frame_Info_Panel = QtGui.QFrame(self.scrollAreaWidgetContents) self.frame_Info_Panel.setGeometry(QtCore.QRect(0, 0, 261, 161)) self.frame_Info_Panel.setObjectName(_fromUtf8("frame_Info_Panel")) self.label_Eqpt_Model = QtGui.QLabel(self.frame_Info_Panel) self.label_Eqpt_Model.setGeometry(QtCore.QRect(10, 10, 111, 27)) self.label_Eqpt_Model.setObjectName(_fromUtf8("label_Eqpt_Model")) self.lineEdit_Eqpt_Model = QtGui.QLineEdit(self.frame_Info_Panel) self.lineEdit_Eqpt_Model.setEnabled(False) self.lineEdit_Eqpt_Model.setGeometry(QtCore.QRect(120, 10, 111, 27)) palette = QtGui.QPalette() brush = QtGui.QBrush(QtGui.QColor(60, 60, 60)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Active, QtGui.QPalette.Text, brush) brush = QtGui.QBrush(QtGui.QColor(60, 60, 60)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.Text, brush) brush = QtGui.QBrush(QtGui.QColor(0, 0, 127)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Disabled, QtGui.QPalette.Text, brush) self.lineEdit_Eqpt_Model.setPalette(palette) self.lineEdit_Eqpt_Model.setObjectName(_fromUtf8("lineEdit_Eqpt_Model")) self.label_State = QtGui.QLabel(self.frame_Info_Panel) self.label_State.setGeometry(QtCore.QRect(10, 40, 111, 27)) self.label_State.setObjectName(_fromUtf8("label_State")) self.lineEdit_State = QtGui.QLineEdit(self.frame_Info_Panel) self.lineEdit_State.setEnabled(False) self.lineEdit_State.setGeometry(QtCore.QRect(120, 40, 111, 27)) palette = QtGui.QPalette() brush = QtGui.QBrush(QtGui.QColor(60, 60, 60)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Active, QtGui.QPalette.Text, brush) brush = QtGui.QBrush(QtGui.QColor(60, 60, 60)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.Text, brush) brush = QtGui.QBrush(QtGui.QColor(0, 0, 127)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Disabled, QtGui.QPalette.Text, brush) self.lineEdit_State.setPalette(palette) self.lineEdit_State.setObjectName(_fromUtf8("lineEdit_State")) self.groupBox_Current_Position = QtGui.QGroupBox(self.frame_Info_Panel) self.groupBox_Current_Position.setGeometry(QtCore.QRect(10, 70, 241, 91)) palette = QtGui.QPalette() brush = QtGui.QBrush(QtGui.QColor(0, 0, 0)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Active, QtGui.QPalette.WindowText, brush) brush = QtGui.QBrush(QtGui.QColor(85, 255, 0)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Active, QtGui.QPalette.Button, brush) brush = QtGui.QBrush(QtGui.QColor(170, 255, 127)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Active, QtGui.QPalette.Light, brush) brush = QtGui.QBrush(QtGui.QColor(127, 255, 63)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Active, QtGui.QPalette.Midlight, brush) brush = QtGui.QBrush(QtGui.QColor(42, 127, 0)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Active, QtGui.QPalette.Dark, brush) brush = QtGui.QBrush(QtGui.QColor(56, 170, 0)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Active, QtGui.QPalette.Mid, brush) brush = QtGui.QBrush(QtGui.QColor(0, 0, 0)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Active, QtGui.QPalette.Text, brush) brush = QtGui.QBrush(QtGui.QColor(255, 255, 255)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Active, QtGui.QPalette.BrightText, brush) brush = QtGui.QBrush(QtGui.QColor(0, 0, 0)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Active, QtGui.QPalette.ButtonText, brush) brush = QtGui.QBrush(QtGui.QColor(255, 255, 255)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Active, QtGui.QPalette.Base, brush) brush = QtGui.QBrush(QtGui.QColor(85, 255, 0)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Active, QtGui.QPalette.Window, brush) brush = QtGui.QBrush(QtGui.QColor(0, 0, 0)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Active, QtGui.QPalette.Shadow, brush) brush = QtGui.QBrush(QtGui.QColor(170, 255, 127)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Active, QtGui.QPalette.AlternateBase, brush) brush = QtGui.QBrush(QtGui.QColor(255, 255, 220)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Active, QtGui.QPalette.ToolTipBase, brush) brush = QtGui.QBrush(QtGui.QColor(0, 0, 0)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Active, QtGui.QPalette.ToolTipText, brush) brush = QtGui.QBrush(QtGui.QColor(0, 0, 0)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.WindowText, brush) brush = QtGui.QBrush(QtGui.QColor(85, 255, 0)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.Button, brush) brush = QtGui.QBrush(QtGui.QColor(170, 255, 127)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.Light, brush) brush = QtGui.QBrush(QtGui.QColor(127, 255, 63)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.Midlight, brush) brush = QtGui.QBrush(QtGui.QColor(42, 127, 0)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.Dark, brush) brush = QtGui.QBrush(QtGui.QColor(56, 170, 0)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.Mid, brush) brush = QtGui.QBrush(QtGui.QColor(0, 0, 0)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.Text, brush) brush = QtGui.QBrush(QtGui.QColor(255, 255, 255)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.BrightText, brush) brush = QtGui.QBrush(QtGui.QColor(0, 0, 0)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.ButtonText, brush) brush = QtGui.QBrush(QtGui.QColor(255, 255, 255)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.Base, brush) brush = QtGui.QBrush(QtGui.QColor(85, 255, 0)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.Window, brush) brush = QtGui.QBrush(QtGui.QColor(0, 0, 0)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.Shadow, brush) brush = QtGui.QBrush(QtGui.QColor(170, 255, 127)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.AlternateBase, brush) brush = QtGui.QBrush(QtGui.QColor(255, 255, 220)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.ToolTipBase, brush) brush = QtGui.QBrush(QtGui.QColor(0, 0, 0)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.ToolTipText, brush) brush = QtGui.QBrush(QtGui.QColor(42, 127, 0)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Disabled, QtGui.QPalette.WindowText, brush) brush = QtGui.QBrush(QtGui.QColor(85, 255, 0)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Disabled, QtGui.QPalette.Button, brush) brush = QtGui.QBrush(QtGui.QColor(170, 255, 127)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Disabled, QtGui.QPalette.Light, brush) brush = QtGui.QBrush(QtGui.QColor(127, 255, 63)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Disabled, QtGui.QPalette.Midlight, brush) brush = QtGui.QBrush(QtGui.QColor(42, 127, 0)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Disabled, QtGui.QPalette.Dark, brush) brush = QtGui.QBrush(QtGui.QColor(56, 170, 0)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Disabled, QtGui.QPalette.Mid, brush) brush = QtGui.QBrush(QtGui.QColor(42, 127, 0)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Disabled, QtGui.QPalette.Text, brush) brush = QtGui.QBrush(QtGui.QColor(255, 255, 255)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Disabled, QtGui.QPalette.BrightText, brush) brush = QtGui.QBrush(QtGui.QColor(42, 127, 0)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Disabled, QtGui.QPalette.ButtonText, brush) brush = QtGui.QBrush(QtGui.QColor(85, 255, 0)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Disabled, QtGui.QPalette.Base, brush) brush = QtGui.QBrush(QtGui.QColor(85, 255, 0)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Disabled, QtGui.QPalette.Window, brush) brush = QtGui.QBrush(QtGui.QColor(0, 0, 0)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Disabled, QtGui.QPalette.Shadow, brush) brush = QtGui.QBrush(QtGui.QColor(85, 255, 0)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Disabled, QtGui.QPalette.AlternateBase, brush) brush = QtGui.QBrush(QtGui.QColor(255, 255, 220)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Disabled, QtGui.QPalette.ToolTipBase, brush) brush = QtGui.QBrush(QtGui.QColor(0, 0, 0)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Disabled, QtGui.QPalette.ToolTipText, brush) self.groupBox_Current_Position.setPalette(palette) self.groupBox_Current_Position.setObjectName(_fromUtf8("groupBox_Current_Position")) self.label_Current_Position_X = QtGui.QLabel(self.groupBox_Current_Position) self.label_Current_Position_X.setGeometry(QtCore.QRect(20, 20, 41, 27)) self.label_Current_Position_X.setObjectName(_fromUtf8("label_Current_Position_X")) self.lineEdit_Current_Position_X = QtGui.QLineEdit(self.groupBox_Current_Position) self.lineEdit_Current_Position_X.setEnabled(False) self.lineEdit_Current_Position_X.setGeometry(QtCore.QRect(60, 20, 161, 27)) palette = QtGui.QPalette() brush = QtGui.QBrush(QtGui.QColor(60, 60, 60)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Active, QtGui.QPalette.Text, brush) brush = QtGui.QBrush(QtGui.QColor(60, 60, 60)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.Text, brush) brush = QtGui.QBrush(QtGui.QColor(0, 0, 127)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Disabled, QtGui.QPalette.Text, brush) self.lineEdit_Current_Position_X.setPalette(palette) self.lineEdit_Current_Position_X.setObjectName(_fromUtf8("lineEdit_Current_Position_X")) self.label_Current_Position_Y = QtGui.QLabel(self.groupBox_Current_Position) self.label_Current_Position_Y.setGeometry(QtCore.QRect(20, 50, 41, 27)) self.label_Current_Position_Y.setObjectName(_fromUtf8("label_Current_Position_Y")) self.lineEdit_Current_Position_Y = QtGui.QLineEdit(self.groupBox_Current_Position) self.lineEdit_Current_Position_Y.setEnabled(False) self.lineEdit_Current_Position_Y.setGeometry(QtCore.QRect(60, 50, 161, 27)) palette = QtGui.QPalette() brush = QtGui.QBrush(QtGui.QColor(60, 60, 60)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Active, QtGui.QPalette.Text, brush) brush = QtGui.QBrush(QtGui.QColor(60, 60, 60)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.Text, brush) brush = QtGui.QBrush(QtGui.QColor(0, 0, 127)) brush.setStyle(QtCore.Qt.SolidPattern) palette.setBrush(QtGui.QPalette.Disabled, QtGui.QPalette.Text, brush) self.lineEdit_Current_Position_Y.setPalette(palette) self.lineEdit_Current_Position_Y.setObjectName(_fromUtf8("lineEdit_Current_Position_Y")) self.scrollArea_Info_Panel.setWidget(self.scrollAreaWidgetContents) self.tabWidget_Info_Panel.addTab(self.tab_1, _fromUtf8("")) self.tab_2 = QtGui.QWidget() self.tab_2.setObjectName(_fromUtf8("tab_2")) self.tabWidget_Info_Panel.addTab(self.tab_2, _fromUtf8("")) self.dockWidget_Info_Panel.setWidget(self.dockWidgetContents_Info_Panel) MainWindow_InfoPanel.addDockWidget(QtCore.Qt.DockWidgetArea(2), self.dockWidget_Info_Panel) self.retranslateUi(MainWindow_InfoPanel) self.tabWidget_Info_Panel.setCurrentIndex(0) QtCore.QMetaObject.connectSlotsByName(MainWindow_InfoPanel) def retranslateUi(self, MainWindow_InfoPanel): MainWindow_InfoPanel.setWindowTitle(QtGui.QApplication.translate("MainWindow_InfoPanel", "MainWindow Info Panel", None, QtGui.QApplication.UnicodeUTF8)) self.dockWidget_Info_Panel.setWindowTitle(QtGui.QApplication.translate("MainWindow_InfoPanel", "Info Panel", None, QtGui.QApplication.UnicodeUTF8)) self.label_Eqpt_Model.setText(QtGui.QApplication.translate("MainWindow_InfoPanel", "Eqpt Model:", None, QtGui.QApplication.UnicodeUTF8)) self.lineEdit_Eqpt_Model.setText(QtGui.QApplication.translate("MainWindow_InfoPanel", "ABC", None, QtGui.QApplication.UnicodeUTF8)) self.label_State.setText(QtGui.QApplication.translate("MainWindow_InfoPanel", "State:", None, QtGui.QApplication.UnicodeUTF8)) self.lineEdit_State.setText(QtGui.QApplication.translate("MainWindow_InfoPanel", "Working", None, QtGui.QApplication.UnicodeUTF8)) self.groupBox_Current_Position.setTitle(QtGui.QApplication.translate("MainWindow_InfoPanel", "Current Position:", None, QtGui.QApplication.UnicodeUTF8)) self.label_Current_Position_X.setText(QtGui.QApplication.translate("MainWindow_InfoPanel", "X =", None, QtGui.QApplication.UnicodeUTF8)) self.lineEdit_Current_Position_X.setText(QtGui.QApplication.translate("MainWindow_InfoPanel", "1000.00 m", None, QtGui.QApplication.UnicodeUTF8)) self.label_Current_Position_Y.setText(QtGui.QApplication.translate("MainWindow_InfoPanel", "Y =", None, QtGui.QApplication.UnicodeUTF8)) self.lineEdit_Current_Position_Y.setText(QtGui.QApplication.translate("MainWindow_InfoPanel", "1000.00 m", None, QtGui.QApplication.UnicodeUTF8)) self.tabWidget_Info_Panel.setTabText(self.tabWidget_Info_Panel.indexOf(self.tab_1), QtGui.QApplication.translate("MainWindow_InfoPanel", "Info_Pg 1", None, QtGui.QApplication.UnicodeUTF8)) self.tabWidget_Info_Panel.setTabText(self.tabWidget_Info_Panel.indexOf(self.tab_2), QtGui.QApplication.translate("MainWindow_InfoPanel", "Info_Pg 2", None, QtGui.QApplication.UnicodeUTF8)) PS: I initially created the mainWindow as a Dialog, but realized that after undock & redock, the dockWidget doesn't dock properly. Somehow there's an offset. This doesn't seem to be a problem if the mainWindow is a QtGui.QMainWindow instead of a QtGui.QDialog.

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• How to configure the framesize using AudioUnit.framework on iOS

  - by Piperoman

  I have an audio app i need to capture mic samples to encode into mp3 with ffmpeg First configure the audio: /** * We need to specifie our format on which we want to work. * We use Linear PCM cause its uncompressed and we work on raw data. * for more informations check. * * We want 16 bits, 2 bytes (short bytes) per packet/frames at 8khz */ AudioStreamBasicDescription audioFormat; audioFormat.mSampleRate = SAMPLE_RATE; audioFormat.mFormatID = kAudioFormatLinearPCM; audioFormat.mFormatFlags = kAudioFormatFlagIsPacked | kAudioFormatFlagIsSignedInteger; audioFormat.mFramesPerPacket = 1; audioFormat.mChannelsPerFrame = 1; audioFormat.mBitsPerChannel = audioFormat.mChannelsPerFrame*sizeof(SInt16)*8; audioFormat.mBytesPerPacket = audioFormat.mChannelsPerFrame*sizeof(SInt16); audioFormat.mBytesPerFrame = audioFormat.mChannelsPerFrame*sizeof(SInt16); The recording callback is: static OSStatus recordingCallback(void *inRefCon, AudioUnitRenderActionFlags *ioActionFlags, const AudioTimeStamp *inTimeStamp, UInt32 inBusNumber, UInt32 inNumberFrames, AudioBufferList *ioData) { NSLog(@"Log record: %lu", inBusNumber); NSLog(@"Log record: %lu", inNumberFrames); NSLog(@"Log record: %lu", (UInt32)inTimeStamp); // the data gets rendered here AudioBuffer buffer; // a variable where we check the status OSStatus status; /** This is the reference to the object who owns the callback. */ AudioProcessor *audioProcessor = (__bridge AudioProcessor*) inRefCon; /** on this point we define the number of channels, which is mono for the iphone. the number of frames is usally 512 or 1024. */ buffer.mDataByteSize = inNumberFrames * sizeof(SInt16); // sample size buffer.mNumberChannels = 1; // one channel buffer.mData = malloc( inNumberFrames * sizeof(SInt16) ); // buffer size // we put our buffer into a bufferlist array for rendering AudioBufferList bufferList; bufferList.mNumberBuffers = 1; bufferList.mBuffers[0] = buffer; // render input and check for error status = AudioUnitRender([audioProcessor audioUnit], ioActionFlags, inTimeStamp, inBusNumber, inNumberFrames, &bufferList); [audioProcessor hasError:status:__FILE__:__LINE__]; // process the bufferlist in the audio processor [audioProcessor processBuffer:&bufferList]; // clean up the buffer free(bufferList.mBuffers[0].mData); //NSLog(@"RECORD"); return noErr; } With data: inBusNumber = 1 inNumberFrames = 1024 inTimeStamp = 80444304 // All the time same inTimeStamp, this is strange However, the framesize that i need to encode mp3 is 1152. How can i configure it? If i do buffering, that implies a delay, but i would like to avoid this because is a real time app. If i use this configuration, each buffer i get trash trailing samples, 1152 - 1024 = 128 bad samples. All samples are SInt16.

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• Adding NavigationControl to a TabBar Application containing UITableViews

  - by kungfuslippers

  Hi, I'm new to iPhone dev and wanted to get advice on the general design pattern / guide for putting a certain kind of app together. I'm trying to build a TabBar type application. One of the tabs needs to display a TableView and selecting a cell from within the table view will do something else - maybe show another table view or a web page. I need a Navigation Bar to be able to take me back from the table view/web page. The approach I've taken so far is to: Create an app based around UITabBarController as the rootcontroller i.e. @interface MyAppDelegate : NSObject <UIApplicationDelegate> { IBOutlet UIWindow *window; IBOutlet UITabBarController *rootController; } Create a load of UIViewController derived classes and associated NIBs and wire everything up in IB so when I run the app I get the basic tabs working. I then take the UIViewController derived class and modify it to the following: @interface MyViewController : UIViewController<UITableViewDataSource, UITableViewDelegate> { } and I add the delegate methods to the implementation of MyViewController - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { return 2; } - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *CellIdentifier = @"Cell"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; if (cell == nil) { cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease]; } if (indexPath.row == 0) { cell.textLabel.text = @"Mummy"; } else { cell.textLabel.text = @"Daddy"; } return cell; } Go back to IB , open MyViewController.xib and drop a UITableView onto it. Set the Files Owner to be MyViewController and then set the delegate and datasource of the UITableView to be MyViewController. If I run the app now, I get the table view appearing with mummy and daddy working nicely. So far so good. The question is how do I go about incorporating a Navigation Bar into my current code for when I implement: - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath() { // get row selected NSUInteger row = [indexPath row]; if (row == 0) { // Show another table } else if (row == 1) { // Show a web view } } Do I drop a NavigationBar UI control onto MyControllerView.xib ? Should I create it programmatically? Should I be using a UINavigationController somewhere ? I've tried dropping a NavigationBar onto my MyControllerView.xib in IB but its not shown when I run the app, only the TableView is displayed.

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• Web Services Primer for a WinForms Developer?

  - by Unicorns

  I've been writing client/server applications with Winforms for about six years now, but I have yet to venture into the web space (neither ASP.NET nor web services). Given the direction that the job market has been heading for some time and the fact that I have a basic curiosity, I'd like to get involved with writing web services, but I don't know where to start. I've read about various options (XML/SOAP vs. JSON, REST vs...well, actually I don't know what it's called, etc.), but I'm not sure what sort of criteria are in play when making the determination to use one or the other. Obviously, I'd like to leverage the tools that I have (Visual Studio, the .NET framework, etc.) without hamstringing myself into only targeting a particular audience (i.e. writing the service in such a way as to make it difficult to consume from a Windows Mobile/Android/iPhone client, for example). For the record, my plan--for now--is to use WCF for my web service development, but I'm open to using another .NET approach if that's advisable. I realize that this question is pretty open-ended so it may get closed, but here are some things I'm wondering: What are some things to consider when choosing the type of web service (REST, etc.) I intend to write? Is it possible (and, if so, feasible) to move from one approach to another? Can web services be written in an event-driven way? As I said I'm a Winforms developer, so I'm used to objects raising events for me to react to. For instance, if I have two clients connected to my service, is there a way for me to "push" information to one of them as a result of an action by the other? If this is possible, is this advisable or am I just not thinking about it correctly? What authentication mechanisms seem to work best for public-facing services? What about if I plan to have different types of OS'es and clients connecting to the service? Is there a generally accepted platform-agnostic approach? In the line of authentication, is this something that I should be doing myself (authenticating an managing sessions, etc.) or is this something should be handled at the framework level and I just define exactly how it should work? If that's the case, how do I tell who the requester has authenticated themselves as? I started writing an authentication mechanism (simple username/password combinations stored in the database and a corresponding session table with a GUID key) within my service and just requiring that key to be passed with every operation (other than logging in, of course), but I want to make sure that I'm not reinventing the wheel here. However, I also don't want to clutter up the server with a bunch of machine user accounts just to use Basic authentication. I'm also under the impression that Digest (and of course Windows) authentication requires a machine (or AD) user account.

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• measure rendered html in javascript without affecting the measurement

  - by drawnonward

  I am doing pagination in javascript. This is typographic pagination, not chopping up database results. For the most part it works, but I have run into a heisenberg issue where I cannot quite measure text without affecting it. I am not trying to measure text before it is rendered. I want the actual position it shows up at on screen, so I can paginate to where it is naturally wrapped. I am measuring the vertical position of characters, not the horizontal width of strings. The way I do this is similar to this answer in that I am applying a style to a block of text, then measuring the position of the newly created span. If the span does not reach the end of the page, I clear it and make a new span in a linear search. The problem is that the anti-aliased sub-pixel text layout is different when the span is applied. In rare cases, this causes the text to wrap differently when I measure it. I have only seen this when wrapping at a hyphen, and I assume it would not happen when wrapping at white space. As a concrete example, "prepared-he" is the string I am having trouble with. When I measure up to "prepare" it appears, as expected, to be within the current page. When I measure "prepared" the whole phrase wraps down to the next line, moving it to the next page, so it looks like the "d" is the character to break at. I break the text between "prepare" and "d-he" and that is wrong. Trying to evaluate individual characters opens a whole can of worms I would rather avoid. The wrapping changes because, with the new span, the line is 1 pixel wider. A solution to my problem could either be a better way to measure text using javascript, or a way to wrap text in a new element without affecting layout. I have tried setting margin-right:-1px for the class of the span being created to wrap the text. This had no noticeable effect. I am doing this in a UIWebView on the iPhone. There are some measurement related calls that are available in normal WebKit that are not available here. For example, Range does not have getBoundingClientRect or support setting an offset other than 0 in setStart or setEnd. Thank you

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• EXC_BAD_ACCESS when scrolling table after json data is imported

  - by Michael Robinson

  Hello, I'm having a bear of a time trying to figure out why I'm getting a EXC_BAD ACCESS error. The console is giving me this eror: " -[CFArray objectAtIndex:]: message sent to deallocated instance 0x3b14110", I Can't figure it out...Thanks in advance. // Customize the number of rows in the table view. - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { return [rows count]; } // Customize the appearance of table view cells. - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *CellIdentifier = @"Cell"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; if (cell == nil) { cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier] autorelease]; } // Configure the cell. NSDictionary *dict = [rows objectAtIndex: indexPath.row]; cell.textLabel.text = [dict objectForKey:@"name"]; cell.detailTextLabel.text = [dict objectForKey:@"age"]; return cell; } // Implement viewDidLoad to do additional setup after loading the view, typically from a nib. - (void)viewDidLoad { [super viewDidLoad]; self.navigationController.navigationBar.tintColor = [UIColor colorWithRed:0.0/255.0 green:207.0/255.0 blue:255.0/255.0 alpha:1.0]; self.title = NSLocalizedString(@"How Big Now", @"How Big Now"); NSURL *url = [NSURL URLWithString:@"http://10.0.1.8/~imac/iphone/jsontest.php"]; NSString *jsonreturn = [[NSString alloc] initWithContentsOfURL:url]; // NSLog(jsonreturn); // Look at the console and you can see what the restults are NSData *jsonData = [jsonreturn dataUsingEncoding:NSUTF32BigEndianStringEncoding]; NSError *error = nil; // In "real" code you should surround this with try and catch NSDictionary * dict = [[CJSONDeserializer deserializer] deserializeAsDictionary:jsonData error:&error]; if (dict) { rows = [dict objectForKey:@"member"]; } NSLog(@"Array: %@",rows); [jsonreturn release]; } - (void)didReceiveMemoryWarning { // Releases the view if it doesn't have a superview. [super didReceiveMemoryWarning]; // Release any cached data, images, etc that aren't in use. } - (void)viewDidUnload { // Release any retained subviews of the main view. // e.g. self.myOutlet = nil; } - (void)dealloc { [super dealloc]; } @end

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• NSOperation inside NSOperationQueue not being executed

  - by Martin Garcia

  I really need help here. I'm desperate at this point. I have NSOperation that when added to the NSOperationQueue is not being triggered. I added some logging to see the NSOperation status and this is the result: Queue operations count = 1 Queue isSuspended = 0 Operation isCancelled? = 0 Operation isConcurrent? = 0 Operation isFinished? = 0 Operation isExecuted? = 0 Operation isReady? = 1 Operation dependencies? = 0 The code is very simple. Nothing special. LoadingConflictEvents_iPad *loadingEvents = [[LoadingConflictEvents_iPad alloc] initWithNibName:@"LoadingConflictEvents_iPad" bundle:[NSBundle mainBundle]]; loadingEvents.modalPresentationStyle = UIModalPresentationFormSheet; loadingEvents.conflictOpDelegate = self; [self presentModalViewController:loadingEvents animated:NO]; [loadingEvents release]; ConflictEventOperation *operation = [[ConflictEventOperation alloc] initWithParameters:wiLr.formNumber pWI_ID:wiLr.wi_id]; [queue addOperation:operation]; NSLog(@"Queue operations count = %d",[queue operationCount]); NSLog(@"Queue isSuspended = %d",[queue isSuspended]); NSLog(@"Operation isCancelled? = %d",[operation isCancelled]); NSLog(@"Operation isConcurrent? = %d",[operation isConcurrent]); NSLog(@"Operation isFinished? = %d",[operation isFinished]); NSLog(@"Operation isExecuted? = %d",[operation isExecuting]); NSLog(@"Operation isReady? = %d",[operation isReady]); NSLog(@"Operation dependencies? = %d",[[operation dependencies] count]); [operation release]; Now my operation do many things on the main method, but the problem is never being called. The main is never executed. The most weird thing (believe me, I'm not crazy .. yet). If I put a break point in any NSLog line or in the creation of the operation the main method will be called and everything will work perfectly. This have been working fine for a long time. I have been making some changes recently and apparently something screw things up. One of those changes was to upgrade the device to iOS 5.1 SDK (iPad). To add something, I have the iPhone (iOS 5.1) version of this application that use the same NSOperation object. The difference is in the UI only, and everything works fine. Any help will be really appreciated. Regards,

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• Multiple labels in Navigation bar

  - by cmos

  I would like to create a view similar to the "Now Playing" page on the iPhone and have 3 lines of text in the Navigation bar. The only way I could find to do this was: UINavigationBar *bar = [self.navigationController navigationBar]; label = [[UILabel alloc] initWithFrame:CGRectMake(60, 2, 200, 14)]; label.tag = SONG_TAG; label.backgroundColor = [UIColor clearColor]; label.font = [UIFont boldSystemFontOfSize:14]; label.adjustsFontSizeToFitWidth = NO; label.textAlignment = UITextAlignmentCenter; label.textColor = [UIColor whiteColor]; label.highlightedTextColor = [UIColor blackColor]; [bar addSubview:label]; [label release]; //Create album label label = [[UILabel alloc] initWithFrame:CGRectMake(60, 17, 200, 12)]; label.tag = ALBUM_TAG; label.backgroundColor = [UIColor clearColor]; label.font = [UIFont systemFontOfSize:12]; label.adjustsFontSizeToFitWidth = NO; label.textAlignment = UITextAlignmentCenter; label.highlightedTextColor = [UIColor blackColor]; label.textColor = HEXCOLOR(0xA5A5A5ff); [bar addSubview:label]; [label release]; //Create artist label label = [[UILabel alloc] initWithFrame:CGRectMake(60, 30, 200, 12)]; label.tag = ARTIST_TAG; label.backgroundColor = [UIColor clearColor]; label.font = [UIFont systemFontOfSize:12]; label.adjustsFontSizeToFitWidth = NO; label.textAlignment = UITextAlignmentCenter; label.highlightedTextColor = [UIColor blackColor]; label.textColor = HEXCOLOR(0xA5A5A5ff); [bar addSubview:label]; [label release]; The problem with this is I have to remove them when the view changes. So, in -viewWillDisappear I have: UILabel *label; label = (UILabel *)[self.navigationController.navigationBar viewWithTag:SONG_TAG]; [label removeFromSuperview]; label = (UILabel *)[self.navigationController.navigationBar viewWithTag:ALBUM_TAG]; [label removeFromSuperview]; label = (UILabel *)[self.navigationController.navigationBar viewWithTag:ARTIST_TAG]; [label removeFromSuperview]; I think the way to do this is make a custom view that has the 3 labels in it, and add this to the title view. (here's the catch - you can only add 1 label or view to the title view spot on the nav bar) self.navigationItem.titleView = newViewIMadeWithThreeLabels

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• Instance caching in Objective C

  - by zoul

  Hello! I want to cache the instances of a certain class. The class keeps a dictionary of all its instances and when somebody requests a new instance, the class tries to satisfy the request from the cache first. There is a small problem with memory management though: The dictionary cache retains the inserted objects, so that they never get deallocated. I do want them to get deallocated, so that I had to overload the release method and when the retain count drops to one, I can remove the instance from cache and let it get deallocated. This works, but I am not comfortable mucking around the release method and find the solution overly complicated. I thought I could use some hashing class that does not retain the objects it stores. Is there such? The idea is that when the last user of a certain instance releases it, the instance would automatically disappear from the cache. NSHashTable seems to be what I am looking for, but the documentation talks about “supporting weak relationships in a garbage-collected environment.” Does it also work without garbage collection? Clarification: I cannot afford to keep the instances in memory unless somebody really needs them, that is why I want to purge the instance from the cache when the last “real” user releases it. Better solution: This was on the iPhone, I wanted to cache some textures and on the other hand I wanted to free them from memory as soon as the last real holder released them. The easier way to code this is through another class (let’s call it TextureManager). This class manages the texture instances and caches them, so that subsequent calls for texture with the same name are served from the cache. There is no need to purge the cache immediately as the last user releases the texture. We can simply keep the texture cached in memory and when the device gets short on memory, we receive the low memory warning and can purge the cache. This is a better solution, because the caching stuff does not pollute the Texture class, we do not have to mess with release and there is even a higher chance for cache hits. The TextureManager can be abstracted into a ResourceManager, so that it can cache other data, not only textures.

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• help with selecting nodes with xpath

  - by fayer

  my xml structure looks like this: <entity id="1000070"> <name>apple</name> <type>category</type> <entities> <entity id="7002870"> <name>mac</name> <type>category</type> <entities> <entity id="7002907"> <name>leopard</name> <type>sub-category</type> <entities> <entity id="7024080"> <name>safari</name> <type>subject</type> </entity> <entity id="7024701"> <name>finder</name> <type>subject</type> </entity> </entities> </entity> </entities> </entity> <entity id="7024080"> <name>iphone</name> <type>category</type> <entities> <entity id="7024080"> <name>3g</name> <type>sub-category</type> </entity> <entity id="7024701"> <name>3gs</name> <type>sub-category</type> </entity> </entities> </entity> <entity id="7024080"> <name>ipad</name> <type>category</type> </entity> </entities> </entity> currently i have selected all entities with type node that is not category. $xmlDocument-removeNodes("//entity[not(type='category')]") i wonder how i could select all nodes that dont contain type=category OR type=sub-category. i have tried with: $xmlDocument->removeNodes("//entity[not(type='category')] | //entity[not(type='sub-category')]") but it doesnt work!

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• Modify audio pitch of recorded clip (m4v)

  - by devcube

  I'm writing an app in which I'm trying to change the pitch of the audio when I'm recording a movie (.m4v). Or by modifying the audio pitch of the movie afterwards. I want the end result to be a movie (.m4v) that has the original length (i.e. same visual as original) but with modified sound pitch, e.g. a "chipmunk voice". A realtime conversion is to prefer if possible. I've read alot about changing audio pitch in iOS but most examples focus on playback, i.e. playing the sound with a different pitch. In my app I'm recording a movie (.m4v / AVFileTypeQuickTimeMovie) and saving it using standard AVAssetWriter. When saving the movie I have access to the following elements where I've tried to manipulate the audio (e.g. modify the pitch): audio buffer (CMSampleBufferRef) audio input writer (AVAssetWriterAudioInput) audio input writer options (e.g. AVNumberOfChannelsKey, AVSampleRateKey, AVChannelLayoutKey) asset writer (AVAssetWriter) I've tried to hook into the above objects to modify the audio pitch, but without success. I've also tried with Dirac as described here: Real Time Pitch Change In iPhone Using Dirac And OpenAL with AL_PITCH as described here: Piping output from OpenAL into a buffer And the "BASS" library from un4seen: Change Pitch/Tempo In Realtime I haven't found success with any of the above libs, most likely because I don't really know how to use them, and where to hook them into the audio saving code. There seems to be alot of librarys that have similar effects but focuses on playback or custom recording code. I want to manipulate the audio stream I've already got (AVAssetWriterAudioInput) or modify the saved movie clip (.m4v). I want the video to be unmodifed visually, i.e. played at the same speed. But I want the audio to go faster (like a chipmunk) or slower (like a ... monster? :)). Do you have any suggestions how I can modify the pitch in either real time (when recording the movie) or afterwards by converting the entire movie (.m4v file)? Should I look further into Dirac, OpenAL, SoundTouch, BASS or some other library? I want to be able to share the movie to others with modified audio, that's the reason I can't rely on modifying the pitch for playback only. Any help is appreciated, thanks!

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• ASP.NET MVC 4/Web API Single Page App for Mobile Devices ... Needs Authentication

  - by lmttag

  We have developed an ASP.NET MVC 4/Web API single page, mobile website (also using jQuery Mobile) that is intended to be accessed only from mobile devices (e.g., iPads, iPhones, Android tables and phones, etc.), not desktop browsers. This mobile website will be hosted internally, like an intranet site. However, since we’re accessing it from mobile devices, we can’t use Windows authentication. We still need to know which user (and their role) is logging in to the mobile website app. We tried simply using ASP.NET’s forms authentication and membership provider, but couldn’t get it working exactly the way we wanted. What we need is for the user to be prompted for a user name and password only on the first time they access the site on their mobile device. After they enter a correct user name and password and have been authenticated once, each subsequent time they access the site they should just go right in. They shouldn’t have to re-enter their credentials (i.e., something needs to be saved locally to each device to identify the user after the first time). This is where we had troubles. Everything worked as expected the first time. That is, the user was prompted to enter a user name and password, and, after doing that, was authenticated and allowed into the site. The problem is every time after the browser was closed on the mobile device, the device and user were not know and the user had to re-enter user name and password. We tried lots of things too. We tried setting persistent cookies in JavaScript. No good. The cookies weren’t there to be read the second time. We tried manually setting persistent cookies from ASP.NET. No good. We, of course, used FormsAuthentication.SetAuthCookie(model.UserName, true); as part of the form authentication framework. No good. We tried using HTML5 local storage. No good. No matter what we tried, if the user was on a mobile device, they would have to log in every single time. (Note: we’ve tried on an iPad and iPhone running both iOS 5.1 and 6.0, with Safari configure to allow cookies, and we’ve tried on Android 2.3.4.) Is there some trick to getting a scenario like this working? Or, do we have to write some sort of custom authentication mechanism? If so, how? And, what? Or, should we use something like claims-based authentication and WIF? Or??? Any help is appreciated. Thanks!

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• How to change the JSON output format and how to support chinese character?

  - by sky

  Currently I using the following code to get my JSON output from MySQL. <?php $session = mysql_connect('localhost','name','pass'); mysql_select_db('dbname', $session); $result= mysql_query('SELECT message FROM posts', $session); $somethings = array(); while ($row = mysql_fetch_assoc($result)) { $somethings[] = $row; } ?> <script type="text/javascript"> var somethings= <?php echo json_encode($somethings); ?>; </script> And the output is: <script type="text/javascript"> var somethings= [{"message":"Welcome to Yo~ :)"},{"message":"Try iPhone post!"},{"message":"????"}]; </script> Here is the question, how can I change my output into format like : <script type="text/javascript"> userAge = new Array('21','36','20'), userMid = new Array('liuple','anhu','jacksen'); </script> Which I'll be using later with following code : var html = ' <table class="map-overlay"> <tr> <td class="user">' + '<a class="username" href="/' + **userMid[index]** + '" target="_blank"><img alt="" src="' + getAvatar(signImgList[index], '72x72') + '"></a><br> <a class="username" href="/' + **userMid[index]** + '" target="_blank">' + userNameList[index] + '</a><br> <span class="info">' + **userSex[index]** + ' ' + **userAge[index]** + '?<br> ' + cityList[index] + '</span>' + '</td> <td class="content">' + picString + somethings[index] + '<br> <span class="time">' + timeList[index] + picTips + '</span></td> </tr> </table> '; Thanks for helping and reading!

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• Why isnt my data persisting with nskeyedarchiver?

  - by aking63

  Im just working on what should be the "finishing touches" of my first iPhone game. For some reason, when I save with NSKeyedArchiver/Unarchiver, the data seems to load once and then gets lost or something. Here's what I've been able to deduce: When I save in this viewController, pop to the previous one, and then push back into this one, the data is saved and prints as I want it to. But when I save in this viewController, then push a new one and pop back into this one, the data is lost. Any idea why this might be happening? Do I have this set up all wrong? I copied it from a book months ago. Here's the methods I use to save and load. - (void) saveGameData { NSLog(@"LS:saveGameData"); // SAVE DATA IMMEDIATELY NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0]; NSString *gameStatePath = [documentsDirectory stringByAppendingPathComponent:@"gameState.dat"]; NSMutableData *gameSave= [NSMutableData data]; NSKeyedArchiver *encoder = [[NSKeyedArchiver alloc] initForWritingWithMutableData:gameSave]; [encoder encodeObject:categoryLockStateArray forKey:kCategoryLockStateArray]; [encoder encodeObject:self.levelsPlist forKey:@"levelsPlist"]; [encoder finishEncoding]; [gameSave writeToFile:gameStatePath atomically:YES]; NSLog(@"encoded catLockState:%@",categoryLockStateArray); } - (void) loadGameData { NSLog(@"loadGameData"); // If there is a saved file, perform the load NSMutableData *gameData = [NSData dataWithContentsOfFile:[[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0] stringByAppendingPathComponent:@"gameState.dat"]]; // LOAD GAME DATA if (gameData) { NSLog(@"-Loaded Game Data-"); NSKeyedUnarchiver *unarchiver = [[NSKeyedUnarchiver alloc] initForReadingWithData:gameData]; self.levelsPlist = [unarchiver decodeObjectForKey:@"levelsPlist"]; categoryLockStateArray = [unarchiver decodeObjectForKey:kCategoryLockStateArray]; NSLog(@"decoded catLockState:%@",categoryLockStateArray); } // CREATE GAME DATA else { NSLog(@"-Created Game Data-"); self.levelsPlist = [[NSMutableDictionary alloc] initWithContentsOfFile:[[NSBundle mainBundle] pathForResource:kLevelsPlist ofType:@"plist"]]; } if (!categoryLockStateArray) { NSLog(@"-Created categoryLockStateArray-"); categoryLockStateArray = [[NSMutableArray alloc] initWithCapacity:[[self.levelsPlist allKeys] count]]; for (int i=0; i<[[self.levelsPlist allKeys] count]; i++) { [categoryLockStateArray insertObject:[NSNumber numberWithBool:FALSE] atIndex:i]; } } // set the properties of the categories self.categoryNames = [self.levelsPlist allKeys]; NUM_CATEGORIES = [self.categoryNames count]; thisCatCopy = [[NSMutableDictionary alloc] initWithDictionary:[[levelsPlist objectForKey:[self.categoryNames objectAtIndex:pageControl.currentPage]] mutableCopy]]; NUM_FINISHED = [[thisCatCopy objectForKey:kNumLevelsBeatenInCategory] intValue]; }

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• Very simple test view in MonoTouch draws a line using Core Graphics but view content is not shown

  - by Krumelur

  Hi, I give up now on this very simple test I've been trying to run. I want to add a subview to my window which does nothing but draw a line from one corner of the iPhone's screen to the other and then, using touchesMoved() it is supposed to draw a line from the last to the current point. The issues: 1. Already the initial line is not visible. 2. When using Interface Builder, the initial line is visible, but drawRect() is never called, even if I call SetNeedsDisplay(). It can't be that hard...can somebody fix the code below to make it work? In main.cs in FinishedLaunching(): oView = new TestView(); oView.AutoresizingMask = UIViewAutoresizing.FlexibleWidth | UIViewAutoresizing.FlexibleHeight; oView.Frame = new System.Drawing.RectangleF(0, 0, 320, 480); window.AddSubview(oView); window.MakeKeyAndVisible (); The TestView.cs: using System; using MonoTouch.UIKit; using MonoTouch.CoreGraphics; using System.Drawing; using MonoTouch.CoreAnimation; using MonoTouch.Foundation; namespace Test { public class TestView : UIView { public TestView () : base() { } public override void DrawRect (RectangleF area, UIViewPrintFormatter formatter) { CGContext oContext = UIGraphics.GetCurrentContext(); oContext.SetStrokeColor(UIColor.Red.CGColor.Components); oContext.SetLineWidth(3.0f); this.oLastPoint.Y = UIScreen.MainScreen.ApplicationFrame.Size.Height - this.oLastPoint.Y; this.oCurrentPoint.Y = UIScreen.MainScreen.ApplicationFrame.Size.Height - this.oCurrentPoint.Y; oContext.StrokeLineSegments(new PointF[] {this.oLastPoint, this.oCurrentPoint }); oContext.Flush(); oContext.RestoreState(); Console.Out.WriteLine("Current X: {0}, Y: {1}", oCurrentPoint.X.ToString(), oCurrentPoint.Y.ToString()); Console.Out.WriteLine("Last X: {0}, Y: {1}", oLastPoint.X.ToString(), oLastPoint.Y.ToString()); } private PointF oCurrentPoint = new PointF(0, 0); private PointF oLastPoint = new PointF(320, 480); public override void TouchesMoved (MonoTouch.Foundation.NSSet touches, UIEvent evt) { base.TouchesMoved (touches, evt); UITouch oTouch = (UITouch)touches.AnyObject; this.oCurrentPoint = oTouch.LocationInView(this); this.oLastPoint = oTouch.PreviousLocationInView(this); this.SetNeedsDisplay(); } } }

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• ocjective-c Obtain return value from public method

  - by Felix

  I'm pretty new to objective-C (and C in general) and iPhone development and am coming from the java island, so there are some fundamentals that are quite tough to learn for me. I'm diving right into iOS5 and want to use storyboards. For now I am trying to setup a list in a UITableViewController that will be filled with values returned by a web service in the future. For now, I just want to generate some mock objects and show their names in the list to be able to proceed. Coming from java, my first approach would be to create a new Class that provides a global accessible method to generate some objects for my list: #import <Foundation/Foundation.h> @interface MockObjectGenerator : NSObject +(NSMutableArray *) createAndGetMockProjects; @end Implementation is... #import "MockObjectGenerator.h" // Custom object with some fields #import "Project.h" @implementation MockObjectGenerator + (NSMutableArray *) createAndGetMockObjects { NSMutableArray *mockProjects = [NSMutableArray alloc]; Project *project1 = [Project alloc]; Project *project2 = [Project alloc]; Project *project3 = [Project alloc]; project1.name = @"Project 1"; project2.name = @"Project 2"; project3.name = @"Project 3"; [mockProjects addObject:project1]; [mockProjects addObject:project2]; [mockProjects addObject:project3]; } And here is my ProjectTable.h that is supposed to control my ListView #import <UIKit/UIKit.h> @interface ProjectsTable : UITableViewController @property (strong, nonatomic) NSMutableArray *projectsList; @end And finally ProjectTable.m #import "ProjectsTable.h" #import "Project.h" #import "MockObjectGenerator.h" @interface ProjectsTable { @synthesize projectsList = _projectsList; -(id)initWithStyle:(UITableViewStyle:style { self = [super initWithStyle:style]; if (self) { _projectsList = [[MockObjectGenerator createAndGetMockObjects] copy]; } return self; } - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { // only one section for all return 1; - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { NSLog(@"%d entries in list", _projectsList.count); return _projectsList.count; - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { // the identifier of the lists prototype cell is set to this string value static NSString *CellIdentifier = @"projectCell"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; Project *project = [_projectsList objectAtIndex:indexPath.row]; cell.textLabel.text = project.name } So while I think everything is correctly set, I expect the tableView to show my three mock objects in its rows. But it stays empty and the NSLog method prints "0 entries in list" into the console. So what am I doing wrong? Any help is appreciated. Best regards Felix

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• Calling a JAVA method from C++ with JNI, no parameters

  - by PRNDL Development Studios

  Please bear with me, I am an iPhone developer and this whole android this confuses me a bit. I have some c++ methods that are called from a cocos2d-x CCMenuItem. Therefore I cannot send any parameters, according to the docs. I need to open a url with the android browser which will require me to call a JAVA function to start a new intent. I understand that I need to create a VM, however the below code gives me the error: jni/../../Classes/MyClass.cpp:184: error: 'JNI_CreateJavaVM' was not declared in this scope I was looking at this thread: Calling a java method from c++ in Android But he uses parameters, and I can't do that. And I don't see where those are in his code to just make them myself. I don't know what the string should be in the 'Find Class' method. Also, I assume it is pretty terrible to create a new VM instance in every method I need to call. How would I create one as a singleton to use across the board? This is my c++ code called by my menu item: #include <jni.h> ... JavaVM *vm; // Global ... void OptionsScene::website(){ JNIEnv *env; JavaVMInitArgs vm_args; vm_args.version = JNI_VERSION_1_2; vm_args.nOptions = 0; vm_args.ignoreUnrecognized = 1; jint result = JNI_CreateJavaVM(&vm, (void **)&env, &vm_args); // This line still errors jclass clazz = env->FindClass("com/prndl/project/WebExecute"); jmethodID method = env->GetMethodID(clazz, "website", "(Ljava/lang/String;)V"); env->CallVoidMethod(NULL,method); vm->DestroyJavaVM(); And this is the JAVA Method that I need to call: public class WebExecute extends Activity{ public void website(){ Intent browserIntent = new Intent(Intent.ACTION_VIEW, Uri.parse("http://www.google.com")); startActivity(browserIntent); } } Honestly, I am struggling with this, any help is appreciated. Thanks.

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