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  • UIGraphicsGetImageFromCurrentImageContext gives poor quality / low resolution image, how do I get be

    - by user157733
    Ok so I am taking a screen shot of a photo I took with my camera on the iPhone. I put the camera photo into UIImageView and grab a screenshot of it using this sort of code (this is from http://www.skylarcantu.com/blog/2009/10/16/saving-a-view-as-an-image/)... - (void)takeScreenshot { UIWindow *theScreen = [[UIApplication sharedApplication].windows objectAtIndex:0]; UIGraphicsBeginImageContext(theScreen.frame.size); [[theScreen layer] renderInContext:UIGraphicsGetCurrentContext()]; UIImage *screenshot = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); [self doSomethingWith:screenshot]; } I have it working as I want but the image quality of the screenshot is much worse than the image I take with my camera. Is there a way to overcome this? I guess it is because this takes a screenshot which captures the resolution of the iPhone screen rather than the resolution of the camera - maybe?! Any suggestions would be great :-)

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  • Can't get iPhone device token

    - by d.andreykiv
    Hi. I'm trying to get iPhone device token using following code - (void)applicationDidFinishLaunching:(UIApplication *)application { // Override point for customization after app launch [window addSubview:viewController.view]; [window makeKeyAndVisible]; NSLog(@"Registering for push notifications..."); [application registerForRemoteNotificationTypes:UIRemoteNotificationTypeBadge|UIRemoteNotificationTypeAlert]; } - (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)newDeviceToken { NSLog(@"Registered!@@"); } - (void)application:(UIApplication *)application didFailToRegisterForRemoteNotificationsWithError:(NSError *)error { NSLog(@"application:didFailToRegisterForRemoteNotificationsWithError: %@", error); if ([error code] != 3010) // 3010 is for the iPhone Simulator { // show some alert or otherwise handle the failure to register. } } but only getting "2010-04-02 18:23:35.434 Untitled[3133:207] Registering for push notifications..." What I was doing wrong?

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  • Android SQLite database gets corrupted

    - by Seu
    There are about 100 people using my Android App right now and every once and while I get a crash report to the server with this stack trace: android.database.sqlite.SQLiteDatabaseCorruptException: database disk image is malformed at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2596) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2621) at android.app.ActivityThread.access$2200(ActivityThread.java:126) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1932) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:123) at android.app.ActivityThread.main(ActivityThread.java:4595) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:521) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618) at dalvik.system.NativeStart.main(Native Method) Caused by: android.database.sqlite.SQLiteDatabaseCorruptException: database disk image is malformed at android.database.sqlite.SQLiteQuery.native_fill_window(Native Method) at android.database.sqlite.SQLiteQuery.fillWindow(SQLiteQuery.java:75) at android.database.sqlite.SQLiteCursor.fillWindow(SQLiteCursor.java:295) at android.database.sqlite.SQLiteCursor.getCount(SQLiteCursor.java:276) at android.database.AbstractCursor.moveToPosition(AbstractCursor.java:171) at android.database.AbstractCursor.moveToFirst(AbstractCursor.java:248) The result is the app crashing and all the data in the DB being lost. One thing to note is that every time I read or write to the database I get a new SQLiteDatabase and close it as soon as I'm done. I thought this would simplify things, but perhaps that's causing the problem? Is it possible this is just a SQLite bug?

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  • How can we add text in cocos2d by using UITextView ?

    - by srikanth rongali
    I want a UITextView in cocos2d. I used in init method UITextView *textView = [[UITextView alloc] initWithFrame:CGRectMake(0,0, windowSize.height/2,windowSize.width/2)]; textView.backgroundColor = [UIColor clearColor]; textView.text = @"I am First enemy"; [textView setEditable:NO]; [[[CCDirector sharedDirector]openGLView]addSubview:textView]; the orientation is [[CCDirector sharedDirector] setDeviceOrientation:CCDeviceOrientationLandscapeLeft]; I need the text to appear in landscape mode, but I am getting the text in following way. How can I make the text to appear in the landScape mode. I am working in cocos2d. CanOI scroll the text ? What should i add to make the text scroll up and down. Thank you.

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  • Where to change data for a "list" datasource in dashcode?

    - by erotsppa
    I created a new project in dashcode and it automatically generated a mobile web app for me with a list and sample datasources. I see two datasources, one is labeled as "datasource" and the other is "list". However I can see that the actual data in datasources is in a js file, everything is good but where is the actual data stored for "list"? The sample application came with a bunch of data for "list" and I am unable to change it. Any ideas?

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  • Hitting the Done button does not dismiss the View of a MPMoviePlayerController on OS 4.0 beta

    - by Hakim
    Hi All Hope someone can help me on this, on the old OS version 3.0 and down , hitting the done button one playing a Video would automatically dismiss the view, but now since we have to control the view appearance, hitting the Done just stops the movie but does not dismiss the view, I tried to check if it was linked to any notification and found that each time the Done button was hit, MPMoviePlayerPlaybackStateDidChangeNotification is triggered the problem is that the same notification is received for any change of state pausing /playing... so dismissing the view when MPMoviePlayerPlaybackStateDidChangeNotification is triggered is not an option. does anyone have an answer for this problem Thx for your help

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  • CGContextDrawPDFPage taking up large amounts of memory

    - by Ed Marty
    I have a PDF file that I want to draw in outline form. I want to draw the first several pages on the document each in their own UIImage to use on a button so that when clicked, the main display will navigate to the clicked page. However, CGContextDrawPDFPage seems to be using copious amounts of memory when attempting to draw the page. Even though the image is only supposed to be around 100px tall, the application crashes while drawing one page in particular, which according to Instruments, allocates about 13 MB of memory just for the one page. Here's the code for drawing: //Note: This is always called in a background thread, but the autorelease pool is setup elsewhere + (void) drawPage:(CGPDFPageRef)m_page inRect:(CGRect)rect inContext:(CGContextRef) g { CGPDFBox box = kCGPDFMediaBox; CGAffineTransform t = CGPDFPageGetDrawingTransform(m_page, box, rect, 0,YES); CGRect pageRect = CGPDFPageGetBoxRect(m_page, box); //Start the drawing CGContextSaveGState(g); //Clip to our bounding box CGContextClipToRect(g, pageRect); //Now we have to flip the origin to top-left instead of bottom left //First: flip y-axix CGContextScaleCTM(g, 1, -1); //Second: move origin CGContextTranslateCTM(g, 0, -rect.size.height); //Now apply the transform to draw the page within the rect CGContextConcatCTM(g, t); //Finally, draw the page //The important bit. Commenting out the following line "fixes" the crashing issue. CGContextDrawPDFPage(g, m_page); CGContextRestoreGState(g); } Is there a better way to draw this image that doesn't take up huge amounts of memory?

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  • MPMoviePlayerController problem when play a movie

    - by Momeks
    hi .. i put a movie when my application will lunch . just like gameloft games . so when application has lunched , movie plays fine but before the move plays .. my FirstViewController xib file show first then moview start to play ! why ? here is my code : - (void)applicationDidFinishLaunching:(UIApplication *)application { NSBundle *bundle = [NSBundle mainBundle]; NSString *moviePath = [bundle pathForResource:@"movie" ofType:@"m4v"]; NSURL *movieURL = [[NSURL fileURLWithPath:moviePath] retain]; MPMoviePlayerController *IntroMovie = [[MPMoviePlayerController alloc] initWithContentURL:movieURL]; IntroMovie.movieControlMode = MPMovieControlModeHidden; [IntroMovie play]; }

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  • UIScrollView issue with autorotation and content scaling

    - by boliva
    Hi, I'm building a new (autorotating) iPad app that consists mainly of a screen sized UIScrollView that contains an UIImageView for an image which is 5 times the iPad screen resolution while in portrait mode (3840x1024). What I haven't been able to accomplish is that whenever the device rotates (to whichever orientation) the imageView bounds and the scrollView contentSize asjusts the image for the new height (maintaining its aspect ratio), making the height of the image to always fit the device height for the given orientation (so in the particular case of this image, it would get shown as 2880x768). I tried different combinations of autoresizingMask and contentMode for the imageView but the closer I've been able to get is to effectively display the image at the desired size but with a white padding around it and into the scrollView content (to make up for the original orientation contentSize). I also tried recalculating the scrollView contentSize in the didRotate.../viewWillAnimate... rotation-related methods in my viewController class, with no avail. Best regards and thanks for your time

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  • Using NSXMLParser with CDATA

    - by Robb
    I'm parsing an RSS feed with NSXMLParser and it's working fine for the title and other strings but one of the elements is an image thats like <!CDATA <a href="http:image..etc> How do I add that as my cell image in my table view? Would I define that as an image type? This is what i'm using to do my parsing: - (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName attributes:(NSDictionary *)attributeDict{ //NSLog(@"found this element: %@", elementName); currentElement = [elementName copy]; if ([elementName isEqualToString:@"item"]) { // clear out our story item caches... item = [[NSMutableDictionary alloc] init]; currentTitle = [[NSMutableString alloc] init]; currentDate = [ [NSMutableString alloc] init]; currentSummary = [[NSMutableString alloc] init]; currentLink = [[NSMutableString alloc] init]; } } - (void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qName{ //NSLog(@"ended element: %@", elementName); if ([elementName isEqualToString:@"item"]) { // save values to an item, then store that item into the array... [item setObject:currentTitle forKey:@"title"]; [item setObject:currentLink forKey:@"link"]; [item setObject:currentSummary forKey:@"description"]; [item setObject:currentDate forKey:@"date"]; [stories addObject:[item copy]]; NSLog(@"adding story: %@", currentTitle); } } - (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string{ //NSLog(@"found characters: %@", string); // save the characters for the current item... if ([currentElement isEqualToString:@"title"]) { [currentTitle appendString:string]; } else if ([currentElement isEqualToString:@"link"]) { [currentLink appendString:string]; } else if ([currentElement isEqualToString:@"description"]) { [currentSummary appendString:string]; } else if ([currentElement isEqualToString:@"pubDate"]) { [currentDate appendString:string]; } }

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  • UINavigationController inside tabbar loading a child root view

    - by Doug
    Hi guys, Firstly i'll preface by saying that i am a complete Cocoa touch/objective c noob (.Net dev having a dabble) I have searched on Google as well as here but cannot seem to find an easy solution. I have a UItabbarcontroller view with a UINavigationController inside its first tab I have the root view for this UINavigationController stored in a seperate class and NIB as i am trying to seperate the data viewing from the data loading (i'm going to reuse the table list in multiple places in my database) and simply pass the root view its data using a loading method and have it take it from there. What i want to happen: App loads and loads the first view of the tab bar (A UINavigationController) The UINavigationController inside the first view loads a root view (a UIViewController with a table view) and sets its title The UINavigationController loads the data from a web service and parses it The UINavigationController sends the data to a loading method inside the UIViewController Am i thinking about this completely wrongly? What currently happens: the first tab bar loads with an empty uinavigationcontroller (no table view) the data methods fire and get the webservice data this child view gets sent its data using the loading method the tableview delegate events fail to fire inside the child view telling it to load the data into the table I just can't seem how to load my second view inside the root view of the navigation controller and then send it my data?

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  • How to follow user location with MapKit

    - by Bloudermilk
    I'm using MapKit to display the user's location relative to pins around them. I'd like to be able to mimic the functionality that Maps provides via the crosshair button in the lower left-hand corner of the screen. I'm already aware that MapKit provides a CLLocation object with the user's location via MKUserLocation, I just wanted to seek advice on how I should keep focus on that location. My initial inclination was to use an NSTimer to center the map on that coordinate every 500ms or so. Is there a better way to do this? Is there something built in to MapKit that I'm missing that will accomplish this? Thanks so much, Brendan

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  • hide keyboard in android?

    - by Niranjan Khandelwal
    Hello all, I am new to android development. I am creating an application in which when app launches the edittextfield getfocus automatically and the keyboard pop-up.I want to hide the keyboard by default and show when edittextField get focus.I have tried this method but it's not working. InputMethodManager imm = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE); imm.hideSoftInputFromWindow(myEditText.getWindowToken(), 0); Thanks Niranjan Khandelwal

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  • cellForRowAtIndexPath not being called on tableView reloadData

    - by BotskoNet
    I have a UITableView on one view that loads in data at the start of the application, and then later when a user enters text into a box and hits a button, I re-query the database, re-populate the original NSMutableArray that stores the data for the table. All of that is working perfectly. In some logging statements I can tell that the array has the correct information, the numberOfRowsInSection method is returning the proper count, and is being called after the reload is called. However, the cellForRowAtIndexPath is never called the second time (after the reload) and the table data is never updated. I've spent hours searching the net and I've found nothing that helps. Can anyone help? All code is at: http://github.com/botskonet/inmyspot The specific reload is being called at: http://github.com/botskonet/inmyspot/blob/master/Classes/InMySpotViewController.m Roughly Line 94 From: http://github.com/botskonet/inmyspot/blob/master/Classes/PlateFormViewController.m Roughly line 101 A bit more info: once the new data has been added to the mutablearray, if I try to start scrolling the table, it eventually dies with: "Terminating app due to uncaught exception 'NSRangeException', reason: '* -[NSCFArray objectAtIndex:]: index (29) beyond bounds (29)'" Which I assume means the table cells can't find any data in the array to match the scroll position, which seems to be because the array has the new data, but the table doesn't.

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  • Why is no video showing using MPMoviePlayerController

    - by nathanjosiah
    MPMoviePlayerController *moviePlayer = [[MPMoviePlayerController alloc] initWithContentURL:[NSURL URLWithString:@"http://feeds.harvest.org/~r/greglaurietv/~5/MW4zfyeubC8/HD100307-iPod.mp4"]]; moviePlayer.scalingMode = MPMovieScalingModeNone; moviePlayer.controlStyle = MPMovieControlStyleDefault; [moviePlayer play]; only audio is playing, but nothing shows up in my view.... what am i doing wrong?

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  • popViewControllerAnimated not working, but back button works

    - by Manu
    Hi, I am creating an application based on the Utility template. The main screen consists of a menu with several buttons, each of which creates a different flip-side view. In one of those flip-side views I also configured a Navigation Controller, which works perfectly as long as I have the NavigationBar activated... I can push the view but I have to use the "back" button to return to my flip-side view, which would be the root of the Navigation Controller. The problem comes if I try to go back using "popViewControllerAnimated", properly configured with a button, instead of the "back" button of the NavigationBar. My application crashes for some reason and I am not able to understand why. I could just use the "back" button in the NavigationBar and forget about the problem, but I would prefer to have my own button in order to go back. My app consists of the following: My APPDelegate.m: - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { MenuViewController *menuController = [[MenuViewController alloc] initWithNibName:@"MenuView" bundle:nil]; self.menuViewController = menuController; [menuController release]; menuViewController.view.frame = [UIScreen mainScreen].applicationFrame; [window addSubview:[menuViewController view]]; [window makeKeyAndVisible]; return YES; } MenuViewController.m starting my flip-side view: - (IBAction)showFuelUpliftView { FuelUpliftViewController *controller = [[FuelUpliftViewController alloc] initWithNibName:@"FuelUpliftView" bundle:nil]; controller.delegate = self; controller.title = @"Fuel Uplift"; UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:controller]; [navController setNavigationBarHidden: NO]; navController.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal; [self presentModalViewController:navController animated:YES]; [navController release]; [controller release]; } FuelUpliftViewController.m, where I push the second view of the NavigationController with a button: - (IBAction)showFuelUplift2View:(id)sender { UIViewController *controller = [[UIViewController alloc] initWithNibName:@"FuelUplift2View" bundle:nil]; controller.title = @"Settings"; [self.navigationController pushViewController:controller animated:YES]; [controller release]; } And finally, my FuelUplift2ViewController.m, where the app crashes when trying to go back: - (IBAction)backFromFuelUplift2View { [self.navigationController popViewControllerAnimated:YES]; } I do not know if all this makes sense, I am currently beginning with my first application and am still learning thanks to the traditional trial an error method. Nevertheless, I cannot see the reason for this problem and would appreciate any help I can get. Thanks very much, Manu

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  • How to programmatically disable onClick handler on Android AppWidget Button

    - by Gaks
    I have a Button on appwidget, that I need to 'enable'/'disable' programmatically from a Service. First idea was to call setBoolean(R.id.buttonid, "setClickable", false) to disable it, but apparently you can't call setClickable remotely. Another idea was was remove the text label from it with rv.setTextViewText(R.id.buttonid, "") and then remove the click handler by rv.setOnClickPendingIntent(R.id.buttonid, null). Unfortunately passing null to it causes NullPointerException in in android.app.ActivityThread.handleServiceArgs Is there some other way to programmatically disable/enable appwidget Button? I could just call rv.setViewVisibility(R.id.buttonid, View.GONE) to hide the button completely instead of disabling it. This would however completely break whole widget layout and I would like to avoid it. The solution I'm using now is hiding the button with setViewVisibility and showing other blank button instead to the keep appwidget layout as it was before.

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  • Reading a plist utf-8 value as utf-16

    - by ennuikiller
    I'm working on an iphone app that needs to display superscripts and subscripts. I'm using a picker to read in data from a plist but the unicode values aren't being displayed corretly in the pickerview. Subscripts and superscripts are not being recognized. I'm assuming this is due to the encoding of the plist as utf-8, so the question is how do a convert a plist string encoding from utf-8 to utf-16 ? Just a little more elaboration: If I do this it displays properly at least in a textfield: NSString *equation = @"x\u00B2 + y\u00B2 = z\u00B2" However if I define the same string in a plist and try to read it in and assign it to a string and display it on a pickerview it just displays the the encoding and not the superscripts. @Matt: thanks for your suggestion the unicode is being escaped that is \u00B2 = \u00B2. Googling for "escaped values in plists" returned no useful results, and I haven't been able to use the keyboard cmd-ctrl-shift-+ to work. Any further suggestions would be greatly appreciated!!

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  • Contacting Facebook Connect user without asking permission to send emails

    - by CVertex
    Hi, I have a facebook connect installation on ilovefootball.com.au When they log in, we previously didn't ask Users for permission to get their email address, but the owner of the site wished to ask for users email to contact them later. If we didn't ask for their email address, is there a way to contact a Facebook connect user simply by knowing their name and Facebook UID? I'm confused as to which API to use to perform the communication if this possible. Any help is greatly appreciated. -CV

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  • Help with a compiler warning: Initialization from distinct Objective-C type when types match

    - by Alex Gosselin
    Here is the function where I get the compiler warning, I can't seem to figure out what is causing it. Any help is appreciated. -(void)displaySelector{ //warning on the following line: InstanceSelectorViewController *controller = [[InstanceSelectorViewController alloc] initWithCreator:self]; [self.navController pushViewController:controller animated:YES]; [controller release]; } Interface and implementation for the initWithCreator: method -(InstanceSelectorViewController*)initWithCreator:(InstanceCreator*)creator; -(InstanceSelectorViewController*)initWithCreator:(InstanceCreator*)crt{ if (self = [self initWithNibName:@"InstanceSelectorViewController" bundle:nil]) { creator = crt; } return self; }

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  • Android Update Layout Content

    - by GuyNoir
    I'm looking for a way to update a layout's content with a new view. Is there any way to easily do this. It would be similar to how tabs work, but I don't want to have to get into extending the current tab structure if I don't have to. The final result would be a few buttons that would switch the content in a specific linearlayout for each button. Any help?

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  • Load CoreData objects' string property into UIPickerView

    - by OscarTheGrouch
    Hello Currently I have an entity named "Events" in a CoreData app. "Events" has one string property named "eventName". In the -(void)viewDidLoad I am trying to Fetch all the "Events" objects and load their "eventName" by alphabetical order into a UIPickerView. The ultimate end goal is through the use of a textField, buttons and the pickerView being add new objects in and remove unwanted objects out. Basically turning the UIPickerView into a UITableView. Currently I am able to save objects to the CoreData store, but am not able to pull them/their properties out into the UIPickerView. I am willing and able to share the project source code to anyone who wants it, or is willing to look at it to help out. thanks Chris

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  • iphone Rendering 3-D Object rendering

    - by Yoon Lee
    Hello, I'm a beginner 3-D Quartz thing but knows how to create application. I was looking over sample of GLGravity Source code given by apple today, I was wondering teapot.h file contains all contents of array file such as indices, vertices. Do you guys think this code has been provided by human or, program? if it so, any auto generate program exist written in c based? (cause teapot.h seemed to me obvious native c code) thanks.

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