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• Toubleshooting mapkit performance

  - by brettr

  I'm plotting over 500 points on a map using mapkit. Zooming is a little jittery compared to the native google map app. I've discovered what is causing the slowness. I'm adding custom annotations so that I can later add different pin colors and buttons for detail views: - (MKAnnotationView *) mapView:(MKMapView *)mapView viewForAnnotation:(AddressNote *) annotation { MKPinAnnotationView *annView=[[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"currentlocation"]; annView.pinColor = MKPinAnnotationColorGreen; annView.animatesDrop=TRUE; annView.canShowCallout = YES; annView.calloutOffset = CGPointMake(-5, 5); return annView; } If I comment out the above code, everything works fine. Very smooth with zooming in/out. Should I be adding annotations differently to boost performance?

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• How to check a character is alphabet or integer.

  - by user133611

  Hi All, In my project i have string suppose NSString* str = @"$ 120.00"; From the above string i am getting every individual character, Now i have to get all integres in the string i.e, $ is not a integer so i dont want that, "1" is a integer i want that like this . How can i do that can any one help me Thank you

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• Interface builder background color => clear color ?

  - by jchatard

  I've setup some background colors for my Labels in order to position them. Now that they are well in place, I vould like to reset their background color to none, or clearColor. But I don't find any way to achieve this in IB, I don't gind any "no color" color... Any way to do this without re-coding color at runtime? Thanks, Jérémy

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• Error in facebook.dll facebooksdk

  - by Surendar Radhakrishnan

  I got the web application working with facebooksdk and when i deployed it...it is running fine for sometime and it is throwing the error like this... Server Error in '/' Application. Could not load file or assembly 'Facebook, Version=4.1.1.0, Culture=neutral, PublicKeyToken=58cb4f2111d1e6de' or one of its dependencies. Access is denied. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.IO.FileLoadException: Could not load file or assembly 'Facebook, Version=4.1.1.0, Culture=neutral, PublicKeyToken=58cb4f2111d1e6de' or one of its dependencies. Access is denied. Source Error: An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Assembly Load Trace: The following information can be helpful to determine why the assembly 'Facebook, Version=4.1.1.0, Culture=neutral, PublicKeyToken=58cb4f2111d1e6de' could not be loaded. WRN: Assembly binding logging is turned OFF. To enable assembly bind failure logging, set the registry value [HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD) to 1. Note: There is some performance penalty associated with assembly bind failure logging. To turn this feature off, remove the registry value [HKLM\Software\Microsoft\Fusion!EnableLog]. Stack Trace: [FileLoadException: Could not load file or assembly 'Facebook, Version=4.1.1.0, Culture=neutral, PublicKeyToken=58cb4f2111d1e6de' or one of its dependencies. Access is denied.] Secured_Login.FacebookVerification() +0 System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +25 System.Web.UI.Control.LoadRecursive() +71 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3048 Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.1 i got this method in pageload protected void Page_Load(object sender, EventArgs e) { FacebookVerification(); } protected void FacebookVerification() { try { FacebookApp fbApp = new FacebookApp(); if (fbApp.Session != null) { dynamic myinfo = fbApp.Get("me"); String firstname = myinfo.first_name; String lastname = myinfo.last_name; lblFBStatus.Text = "you signed in as " + firstname + " " + lastname ; } else { lblFBStatus.Text = "Please sign in with facebook"; } } catch (Exception) { throw; } }

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• Which way is best to develop iPhone App

  - by yakub_moriss

  Hi, Friends Through lots of surfing i have come to know there are another way to Develop iPhone Application without using Native API (using CSS,JavaScript i.e.iUi Framework) is it successful way to made application using it ? Will Apple Approves it ? what is the Adv/DisAdv of using this ? Waiting for reply... Thanks in Advance...

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• CLLocationManager Delegate changes in iPhone OS 4.0

  - by Srilakshmi

  Hi, I have to run my app using iPhone OS 4.0. but while I am running my app the CLLocationManager Delegate is not getting called. The Delegate method is (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation{ }

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• Preserving alpha issues with loaded UIImages - how to avoid discarding alpha values on import?

  - by Peter Hajas

  My application lets the user save/load images with alpha values to the camera roll on the device. I can see in the Photos application that these images are appropriately alpha'd, as alpha'd areas just appear black. However, when I load these images back into the application using the valueForKey:UIImagePickerControllerOriginalImage message to the info dictionary from (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info, the alpha values are turned to just white, making those sections opaque. Is there a way to preserve these alpha values?

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• Android custom Mimetype naming convention

  - by Pentium10

  Is there a recommended naming convention for custom Mimetypes name on Android. Suppose I want to store custom data against Contacts, what is the reccomended naming convention to use for the mimetype?

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• MPMoviePlayerController problem at start

  - by Infinity

  Hello guys! I have a problem with MPMoviePlayerController, because when I start it in fullscreen it exists, but the song is still playing. I added the MPMoviePlayerDidExitFullscreenNotification notification and it says that when the video starts playin it exists the full screen. Here's my code: _multimediaPlayer = [[MPMoviePlayerController alloc] init]; _multimediaPlayer.controlStyle = MPMovieControlStyleDefault; _multimediaPlayer.initialPlaybackTime = 0; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(videoPlayBackDidFinish:) name:MPMoviePlayerPlaybackDidFinishNotification object:nil]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(videoPlayerDidExitFullscreen:) name:MPMoviePlayerDidExitFullscreenNotification object:nil]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(videoPlayerPlaybackStateChanged:) name:MPMoviePlayerPlaybackStateDidChangeNotification object:nil]; NSString *path = [NSString stringWithFormat:@"%@/mag_%d/%@", [FMUtils documentsFolderPathWithFile:nil], _magID, _pageObject.fileName]; if ([FMUtils fileExistsAtPath:path]) { _multimediaPlayer.contentURL = [NSURL fileURLWithPath:path]; } else { _multimediaPlayer.contentURL = [NSURL URLWithString:[NSString stringWithFormat:@"%@%@", self.dataURL, _pageObject.fileName]]; } CGSize objectViewSize = self.frame.size; _multimediaPlayer.view.frame = CGRectMake(0, 0, objectViewSize.width, objectViewSize.height); [self addSubview:_multimediaPlayer.view]; if (_pageObject.blink) { [_multimediaPlayer setFullscreen:YES animated:YES]; } [_multimediaPlayer play]; Most of the time it happens when the video is not downloaded and it needs to stream it. Do you have any idea why is this happen?

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• iPhone: How to Maintain Original Image Size Thoughout Image Edits

  - by maddy

  hi, I am developing an iPhone app that resizes and merges images. I want to select two photos of size 1600x1200 from photo library and then merge both into a single image and save that new image back to the photo library. However, I can't get the right size for the merged image. I take two image views of frame 320x480 and set the view's image to my imported images. After manipulating the images (zooming, cropping, rotating), I then save the image to album. When I check the image size it shows 600x800. How do I get the original size of 1600*1200? I've been stuck on this problem from two weeks! Thanks in advance.

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• How to efficiently show many Images? (iPhone programming)

  - by Thomas

  In my application I needed something like a particle system so I did the following: While the application initializes I load a UIImage laserImage = [UIImage imageNamed:@"laser.png"]; UIImage *laserImage is declared in the Interface of my Controller. Now every time I need a new particle this code makes one: // add new Laserimage UIImageView *newLaser = [[UIImageView alloc] initWithImage:laserImage]; [newLaser setTag:[model.lasers count]-9]; [newLaser setBounds:CGRectMake(0, 0, 17, 1)]; [newLaser setOpaque:YES]; [self.view addSubview:newLaser]; [newLaser release]; Please notice that the images are only 17px * 1px small and model.lasers is a internal array to do all the calculating seperated from graphical output. So in my main drawing loop I set all the UIImageView's positions to the calculated positions in my model.lasers array: for (int i = 0; i < [model.lasers count]; i++) { [[self.view viewWithTag:i+10] setCenter:[[model.lasers objectAtIndex:i] pos]]; } I incremented the tags by 10 because the default is 0 and I don't want to move all the views with the default tag. So the animation looks fine with about 10 - 20 images but really gets slow when working with about 60 images. So my question is: Is there any way to optimize this without starting over in OpenGl ES? Thank you very much and sorry for my english! Greetings from Germany, Thomas

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• add sub view in center - iPad

  - by Saurabh

  Hello All, I want to add a sub view in current view, this sub view is 300x300. When I add subview using [self.view addSubview:md.view]; the md.view will appear at position (0,0) is there any way to add subview in center? Thanks

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• How to use Android in hungarian?

  - by Pentium10

  I have checked the regional settings and I can't yet choose Hungarian. I am wondering how can I make my application to work in hungarian? How do I set what language to use?

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• UINavigationBar BarButtonItem with Plain Style

  - by choise

  Hi, i got the following code: - (id)init { if (self = [super init]) { self.title = @"please wait"; UIBarButtonItem *favorite = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"star.png"] style:UIBarButtonItemStylePlain target:self action:@selector(buttonFavoriteClicked:)]; self.navigationItem.rightBarButtonItem = favorite; } return self; } but my button looks still like a Button with UIBarButtonItemStyleBordered is there a way to set a button with plain style at this position?

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• Play Sound while UIImageView animating crashes the app?

  - by Rahul Vyas

  Hello all, I am having a strange problem in my app. I am creating a app in which i have 9 buttons on the view i want to play sound and animation same time. I am using UIImageview for this but i am having starnge behaviour sometimes sound play early and then animation runs.So how do i play them at same time? I am also having crash on device on a specific animation in which i have 60 jpg files. So what's the best way to do this?

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• first app - wrong language is shown in appstore

  - by Sean

  hi all last week i distributed my first app to the appstore. what i've to see was, that the app language which is shown in appstore is not the right one. my app is just in german, but in appstore english is shown up. can somebody tell me what i've exactly got to do, that the language in the appstore is german? i know i ned a "de.lproj" folder, but i don't know what this folder should contain and what i've got to do step by step to realize that the right way. thanks in advance sean

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• NSXMLParser + encoding="windows-1257"

  - by Moze

  So i'm making small program and it download ziped XML database file that is ~30 MB size (unziped). As I understand there is only way with such big files on iPhone, it's to use NSXMLParser. But that file is encoded with windows-1257 format and NSXMLParser does not eat files like that. What can I do? Is there a way to change file encoding on iphone or make NSXMLParser work with other then UTF8 encoded files?

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• NSNumberFormatter to display custom labels for 10^n (10000 -> 10k)

  - by Michele Colombo

  I need to display numbers on a plot axis. The values could change but I want to avoid too long numbers that will ruin the readability of the graph. My thought was to group every 3 characters and substitute them with K, M and so on (or a custom character). So: 1 - 1, 999 - 999, 1.000 - 1k, 1.200 - 1.2k, 1.280 - 1.2k, 12.800 - 12.8k, 999.999 - 999.9k, 1.000.000 - 1M, ... Note that probably I'll only need to format round numbers (1, 10, 1000, 1500, 2000, 10000, 20000, 30000, 100000, ...). Is that possibile with NSNumberFormatter? I saw that it has a setFormat method but I don't know how much customizable it is. I'm using NSNumberFormatter cause the graph object I use wants it to set label format and I want to avoid changing my data to set the label.

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• Sorting array containing strings in objective c

  - by jakob

  Hello experts! I have an array named 'names' with strings looking like this: ["name_23_something", "name_25_something", "name_2_something"]; Now I would like to sort this array in ascending order so it looks like this: ["name_25_something", "name_23_something", "name_2_something"]; I guess that should start of with extracting the numbers since I want that the sorting is done by them: for(NSString *name in arr) { NSArray *nameSegments = [name componentsSeparatedByString:@"_"]; NSLog("number: %@", (NSString*)[nameSegments objectAtIndex:1]); } I'm thinking of creating a dictionary with the keys but I'm not sure if that is the correct objective-c way, maybe there some some methods I could use instead? Could you please me with some tips or example code how this sorting should be done in a proper way. Thank you

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• Using plist to populate a grouped table

  - by Jack Griffiths

  Hi there, I was wanting to use a plist to populate my grouped table. I've had a look at the DrillDownSave sample project, and I'm still none-the-wiser. Although, I did learn that I could store hierarchies and suchlike in there. So here's the questions: How can I use my plist to add new items to my grouped table? I'm currently feeding the table with an array, and I've noticed that an array isn't going to be the best thing for me. When a user taps on an item in the plist, how can I push the view to the corresponding item? In other words, how can I push the view based on the selected row (which was generated by the plist) to it's next "view"? If that makes any sense, please reply. Thanks, Jack.

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• Unit testing an iPhone static library with XCode 3

  - by teabot

  I am writing a number of static libraries for the iPhone and wish also to have suites of unit tests. XCode 3 provides templates for both static libraries and unit tests but I am wondering how they should fit together in a static library project? In my static library project I have created a target for unit testing but expect to also create an executable to kick off the unit tests than run against the classes in the static library. What is the procedure for doing this?

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• iPhone dev: Recurse all project resoureces and collect paths

  - by thomax

  I have a bunch of HTML resources in my app organized in a hierarchy like so: dirA |---> index.html |---> a1.html |---> a2.html |---> dirB |---> b1.html |---> b2.html |---> dirC |---> c5.html |---> c19.html I'm trying to collect the absolute paths of all HTML resources however deep down, but can't seem to figure out how. So far I've tried: NSArray myPaths = [[NSBundle mainBundle] pathsForResourcesOfType:@"html" inDirectory:nil]; This returns an empty array, because I have no HTML files at the root of my project. Then there is: NSArray myPaths = [[NSBundle mainBundle] pathsForResourcesOfType:@"html" inDirectory:@"dirA"]; This returns an array containing only the paths for the three HTML resources directly below dirA. If I read the doc correctly, I guess this is to be expected; pathsForResourcesOfType does not traverse subdirectories. But is there a (preferably nice) way to do it?

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• Cocoa-Created PDF Not Rendering Correctly

  - by Matthew Roberts

  I've created a PDF on the iPad, but the problem is when you have a line of text greater than 1 line, the content just goes off the page. This is my code: void CreatePDFFile (CGRect pageRect, const char *filename) { CGContextRef pdfContext; CFStringRef path; CFURLRef url; CFMutableDictionaryRef myDictionary = NULL; path = CFStringCreateWithCString (NULL, filename, kCFStringEncodingUTF8); url = CFURLCreateWithFileSystemPath (NULL, path, kCFURLPOSIXPathStyle, 0); CFRelease (path); myDictionary = CFDictionaryCreateMutable(NULL, 0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks); NSString *foos = @"Title"; const char *text = [foos UTF8String]; CFDictionarySetValue(myDictionary, kCGPDFContextTitle, CFSTR(text)); CFDictionarySetValue(myDictionary, kCGPDFContextCreator, CFSTR("Author")); pdfContext = CGPDFContextCreateWithURL (url, &pageRect, myDictionary); CFRelease(myDictionary); CFRelease(url); CGContextBeginPage (pdfContext, &pageRect); CGContextSelectFont (pdfContext, "Helvetica", 12, kCGEncodingMacRoman); CGContextSetTextDrawingMode (pdfContext, kCGTextFill); CGContextSetRGBFillColor (pdfContext, 0, 0, 0, 1); NSString *body = @"text goes here"; const char *text = [body UTF8String]; CGContextShowTextAtPoint (pdfContext, 30, 750, text, strlen(text)); CGContextEndPage (pdfContext); CGContextRelease (pdfContext);} Now the issue lies within me writing the text to the page, but the problem is that I can't seem to specify a multi-line "text view".

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• android get contact phone number

  - by ng93

  hi, im trying to get a contacts name and phone number from the contacts list. im using: contactname = Curser.getString(Curser.getColumnIndex(Contacts.DISPLAY_NAME)); to get their name and it works fine. But using: contactphone = Curser.getString(Curser.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER)); causes no warnings or errors and builds fine, yet force closes in both the emulator (2.1) and my htc desire (nexus one 2.2 rom/htc desire 2.1 rom). Any ideas how to fix it? oh and contactname and contactphone are both strings thanks, ng93

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• Problems with testing in app purchases

  - by sashaeve

  I am trying to test my application with in app purchases. I created features, test user, logged out from iTunes on the iPhone and used developer certificate. Load app from XCode in debug mode. When I click "Buy" button I pass all checks for internet availability, canMakePayments and call SKPayment *payment = [SKPayment paymentWithProductIdentifier:featureId]; [[SKPaymentQueue defaultQueue] addPayment:payment]; But all what I see is a pending view and after some minutes it failed in - (void) failedTransaction: (SKPaymentTransaction *)transaction { if (transaction.error.code != SKErrorPaymentCancelled) { NSLog(@"failedTransaction"); } [[MKStoreManager sharedManager] paymentCanceled]; [[SKPaymentQueue defaultQueue] finishTransaction: transaction]; } Please advice in what direction I should go to figure out the problem and what else I should check. P.S. All related questions on SO were checked with no luck.

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