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  • iPhone application purchase verification -- possible?

    - by Sedate Alien
    The iPhone 3.0 SDK's StoreKit.framework provides support for in-app purchases to give the user additional content, functionality and so on. It is possible for an app to send the transactionReceipt property of SKPaymentTransaction objects to the developer's server for verification of successful purchasing before granting service. Is there any analogous SDK to verify the initial application purchase itself? A developer that wishes for their server to only provide services to genuine applications (i.e. not pirated) without using IAP could do so by verifying the application in this manner, e.g. ensure that only users with the correct transactionReceipt are catered for. I understand that this approach would still be vulnerable to replay attacks; a dedicated group of pirates could share a valid transactionReceipt. However, my server provides a consumable service to users, i.e. once they've connected and done the work, it needn't work a second time so replay attacks are nullified. The service that my app provides is relatively niche. I could distribute it on the App Store as a free application that requires at least one IAP to do anything useful, but I am lead to believe that this would be a very unpopular move among users as it would be considered misleading. If I distribute it as a paid app, I do not know how to ensure that only genuine apps can access the webservice. This is important as every invocation of the webservice costs me money! What are my options?

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  • iPhone settings not honoured

    - by winsmith
    My iPhone app has the following problem: Freshly installed, when I read out my "Play Sound" preference with the following code: defaults = [NSUserDefaults standardUserDefaults]; NSLog(@"Play Sounds? %d", [defaults boolForKey:@"play_sounds_preference"]); The setting always reads out as false, even though the default setting is set to true. Any ideas? Here is my Root.plist: <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>StringsTable</key> <string>Root</string> <key>PreferenceSpecifiers</key> <array> <dict> <key>Type</key> <string>PSGroupSpecifier</string> <key>Title</key> <string>General Settings</string> </dict> <dict> <key>Type</key> <string>PSToggleSwitchSpecifier</string> <key>Title</key> <string>Sounds</string> <key>Key</key> <string>play_sounds_preference</string> <key>DefaultValue</key> <true/> </dict> </array> </dict> </plist> When the user opens the Settings.app and navigates to my app's name, THEN the setting reads out as true, even if the user doesn't change anything.

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  • iphone navigation

    - by Rona
    function handleClickEvent(event) { var linkFrom = $(event.target); if (typeof linkFrom.attr("href") == 'undefined') { linkFrom = $(event.target).parent(); } var targetPage = linkFrom.attr("href"); if (linkFrom.hasClass('submit')) { handleSubmitEvent(event); // if we want to stop processing: return false; } if (linkFrom.hasClass('backbutton')) { targetPage = historyStack.pop(); if (historyStack.length == 0) { lastPage = "index.html"; } } else { historyStack.push(lastPage); } lastPage = targetPage; $(event.target).css({ 'background-color': '#194fdb', 'color': '#ffffff' }); loadingWindowON(); // Add new unique div prevPageId = "page" + pageIdCounter; pageIdCounter = parseInt(pageIdCounter) + 1 nextPageId = "page" + pageIdCounter; nextPageDiv = "<div id='" + nextPageId + "' class='nextpage' /></div>"; $("body").append(nextPageDiv); if (linkFrom.attr("target") != "_blank") { event.preventDefault(); document.getElementById(nextPageId).addEventListener('webkitAnimationEnd', function () { // remove prev div element = document.getElementById(prevPageId); if (element) { element.parentNode.removeChild(element); } // set next div as current document.getElementById(nextPageId).className = 'currentpage'; }, false); document.getElementById(nextPageId).className += ' slideleftIn'; document.getElementById(prevPageId).className += ' slideleftOut'; loadContent(targetPage, nextPageId); } I use this javascript with a twitter app I had to do and when I click a button, instead of sliding the new page from the side it adds it to the existing page at the bottom. It works fine when i open it on my computer using google chrome but when I try to open it with my iphone it doesn't work. Any ideas?

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  • Getting "Using two-stage rotation animation" warning with UIImagePickerController

    - by Kay
    Hi, I wrote simple code to test UIImagePickerController: @implementation ProfileEditViewController - (void)viewDidLoad { [super viewDidLoad]; photoTaker_ = [[UIImagePickerController alloc] init]; photoTaker_.delegate = self; photoTaker_.sourceType = UIImagePickerControllerSourceTypeCamera; photoTaker_.showsCameraControls = NO; } - (void)viewDidAppear: (BOOL)animated { [self presentModalViewController: photoTaker_ animated: NO]; } @end And I'm getting strange warnings like the following: 2010-05-20 17:53:13.838 TestProj[2814:307] Using two-stage rotation animation. To use the smoother single-stage animation, this application must remove two-stage method implementations. 2010-05-20 17:53:13.849 TestProj[2814:307] Using two-stage rotation animation is not supported when rotating more than one view controller or view controllers not the window delegate Got any idea what this is about? Thanks a lot in advance!

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  • Core Data managed object context thread synchronisation

    - by Ben Reeves
    I'm have an issue where i'm updating a many-to-many relationship in a background thread, which works fine in that threa, but when I send the object back to the main thread the changes do not show. If I close the app and reopen the data is saved fine and the changes show on the main thread. Also using [context lock] instead of a different managed object context works fine. I have tried NSManagedObjectContext: - (BOOL)save:(NSError **)error; - (void)refreshObject:(NSManagedObject *)object mergeChanges:(BOOL)flag; at different stages throughout the process but it doesn't seem to help. My core data code uses the following getter to ensure any operations are thread safe: - (NSManagedObjectContext *) managedObjectContext { NSThread * thisThread = [NSThread currentThread]; if (thisThread == [NSThread mainThread]) { //Main thread just return default context return managedObjectContext; } else { //Thread safe trickery NSManagedObjectContext * threadManagedObjectContext = [[thisThread threadDictionary] objectForKey:CONTEXT_KEY]; if (threadManagedObjectContext == nil) { threadManagedObjectContext = [[[NSManagedObjectContext alloc] init] autorelease]; [threadManagedObjectContext setPersistentStoreCoordinator: [self persistentStoreCoordinator]]; [[thisThread threadDictionary] setObject:threadManagedObjectContext forKey:CONTEXT_KEY]; } return threadManagedObjectContext; } } and when I pass object between threads i'm using -(NSManagedObject*)makeSafe:(NSManagedObject*)object { if ([object managedObjectContext] != [self managedObjectContext]) { NSError * error = nil; object = [[self managedObjectContext] existingObjectWithID:[object objectID] error:&error]; if (error) { NSLog(@"Error makeSafe: %@", error); } } return object; } Any help appreciated

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  • How to create a smooth CATransition effect

    - by Futur
    The CATransition what i have implemented works really fine but not smooth, i could see the previous uiview screens during the transition, I am just doing this, CATransition *animation = [CATransition animation]; [animation setDuration:0.1]; [animation setType:kCATransitionPush]; [animation setSubtype:kCATransitionFromRight]; [animation setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]]; [[objView layer] addAnimation:animation forKey:@"SwitchToView"]; For moving forward and for moving back wards, CATransition *animation = [CATransition animation]; [animation setDuration:0.1]; [animation setType:kCATransitionPush]; [animation setSubtype:kCATransitionFromLeft]; [animation setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]]; [[objRemovableView layer] addAnimation:animation forKey:@"SwitchToView"]; The effect of sliding is not smooth, is there any other way we can do this which works very smooth? Please help

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  • How to display custom view in UIActionSheet?

    - by 4thSpace
    I have a UIView with a date picker that I'd like to display in an action sheet. I'm using the following code: -(IBAction) button_click:(id)sender{ //UIActionSheet *sheet = [[UIActionSheet alloc] initWithTitle:@"the title" delegate:nil cancelButtonTitle:@"Cancel" destructiveButtonTitle:@"Destructive" otherButtonTitles:@"other", nil]; UIActionSheet *sheet = [[UIActionSheet alloc] init]; ActionSheetController *actionSheet = [[ActionSheetController alloc] initWithNibName:@"ActionSheetView" bundle:nil]; [sheet addSubview:actionSheet.view]; [sheet showInView:self.view]; } What I get is a little bit of the top part of the new view coming up from the bottom and that's it. If I comment the two middle lines of code and uncomment the top part to display a regular action sheet, it works fine. Any ideas what I might be doing wrong?

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  • UITableViewCell with custom gradient background, with another gradient as highlight color

    - by Rich
    I have a custom UITableViewCell with a custom layout. I wanted a gradient background, so in my UITableViewDelegate cellForRowAtIndexPath: method, I create a CAGradientLayer and add it to the cell's layer with insertSubLayer:atIndex: (using index 0). This works just fine except for two things: Most importantly, I can't figure out how to change to a different gradient color when the row is highlighted. I have tried a couple things, but I'm just not familiar enough with the framework to get it working. Where would be the ideal place to put that code, inside the table delegate or the cell itself? Also, there's a 1px white space in between each cell in the table. I have a background color on the main view, a background color on the table, and a background color on the cell. Is there some kind of padding or spacer by default in a UITableView?

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  • Refresh MKAnnotationView on a MKMapView

    - by Konstantin
    I'd like to a-synchronically load images for my custom MKAnnotationView; I'm already using the EGOImageView-framework (it goes very well with UITableViews), but I fail to make it work on MKMapView. Images seem to be loaded, but I cannot refresh them on the map - [myMap setNeedsDisplay] does nothing.

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  • Xcode strange warning - Multiple build commands for output file

    - by Futur
    Hi All, I am getting an error like this, [WARN]Warning: Multiple build commands for output file /Developer/B/Be/build/Release-iphonesimulator/BB.app/no.png [WARN]Warning: Multiple build commands for output file /Developer/B/Be/build/Release-iphonesimulator/BB.app/d.png [WARN]Warning: Multiple build commands for output file /Developer/B/Be/build/Release-iphonesimulator/BB.app/n.png but i have checked the xcode and i dont see any duplicates of such files at all. As the apple lists says : http://lists.apple.com/archives/xcode-users/2006/Dec/msg00276.html there are no duplicates. Please help.

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  • How do I scale a UIButton's imageView?

    - by vcLwei
    Hey guys! I create a UIButton instance(named "button") with a image use [UIButton setImage:forState:] function, the button.frame is larger than the image's size. Now I want to scale this button's image smaller. I had tried to change button.imageView.frame, button.imageView.bounds and button.imageView.contentMode, but all seem ineffective. Hopefully someone can help me how to scale a UIButton's imageView.Thanks! my create UIButton instance code: UIButton *button = [[UIButton alloc] init]; [button setImage:image forState:UIControlStateNormal]; my try to scale the image code: button.imageView.contentMode = UIViewContentModeScaleAspectFit; button.imageView.bounds = CGRectMake(0, 0, 70, 70); and: button.imageView.contentMode = UIViewContentModeScaleAspectFit; button.imageView.frame = CGRectMake(0, 0, 70, 70);

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  • dyld: Library not loaded: /System/Library/Frameworks/UIKit.framework/UIKit

    - by jimbo
    Hi All, Please bear with me, newbie just learning the ropes. I am getting the below message, when I try and run my app, it quiets, but then does let me re-open fine after the first quit. I tried a few things and if I turn on if i 'activate breakpoints' it all works fine... Tried a few suggestions, 'deleting build folder', 'restarting xCode' nothing seems to work... dyld: Library not loaded: /System/Library/Frameworks/UIKit.framework/UIKit Referenced from: /Volumes/MyBook/Apps/CToolBox/build/Debug-iphonesimulator/CToolBox.app/CToolBox Reason: image not found The Debugger has exited due to signal 5 (SIGTRAP).The Debugger has exited due to signal 5 (SIGTRAP). Thanks in advance.

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  • UIScrollView image/photo viewer with paging enabled and zooming

    - by Mike Weller
    OK, I think it's time to make an official place on the internet for this problem: How to make a UIScrollView photoviewer with paging and zooming. Welcome my fellow UIScrollView hackers. I have a UIScrollView with paging enabled, and I'm displaying UIImageViews like the built-in photos app. (Does this sound familiar yet?) I found the following project on github: http://wiki.github.com/andreyvit/ScrollingMadness Which shows how to implement zooming in a scroll view while paging is enabled. If anyone else tries this out, I actually had to remove the UIScrollView subclass and use the native class otherwise it doesn't work. I think it's because of changes in the 3.0 SDK relating to how the scroll view intercepts touch events. So the the idea is to remove all the other views when you start zooming, and move the current view to (0, 0) in the scrollview, updating the contentsize etc. Then when you zoom back to 1.0f it adds the other views back and puts things all back in order. Anyway, that project works perfectly in the simulator, but on the device there is some nasty movement of the view you are resizing, which looks like it's caused by the fact we are changing the contentsize/offset etc. for the view being resized. You have to do this view moving otherwise you can pan left through the whitespace left by the other views. I found one interesting note in the "Known Issues" of the 3.0 SDK release notes: UIScrollView: After zooming, content inset is ignored and content is left in the wrong position. This kind of sounds like what is happening here. After zooming in, the view will shift offscreen because you have changed the offset etc. I've spent hours on this already and I'm slowing coming to the sad realization that this just isn't going to work. Three20's photo viewer is out of the question: it's too heavy weight and there is too much unnecessary UI and other behaviour. The built in Photo app seems to do some magic. If you zoom in on an image and pan to the far edges, the current photo moves independently of the photo next to it which isn't what you get when trying this with a standard UIScrollView. I've seen discussion about nesting the UIScrollView's but I really don't want to go there. Has anybody managed this with the standard UIScrollView (and works in the 2.2 and 3.0 SDK)? I don't fancy rolling my own zoom + bounce + pan + paging code.

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  • Optimized Image Loading in a UIScrollView

    - by Michael Gaylord
    I have a UIScrollView that has a set of images loaded side-by-side inside it. You can see an example of my app here: http://www.42restaurants.com. My problem comes in with memory usage. I want to lazy load the images as they are about to appear on the screen and unload images that aren't on screen. As you can see in the code I work out at a minimum which image I need to load and then assign the loading portion to an NSOperation and place it on an NSOperationQueue. Everything works great apart from a jerky scrolling experience. I don't know if anyone has any ideas as to how I can make this even more optimized, so that the loading time of each image is minimized or so that the scrolling is less jerky. - (void)scrollViewDidScroll:(UIScrollView *)scrollView{ [self manageThumbs]; } - (void) manageThumbs{ int centerIndex = [self centerThumbIndex]; if(lastCenterIndex == centerIndex){ return; } if(centerIndex >= totalThumbs){ return; } NSRange unloadRange; NSRange loadRange; int totalChange = lastCenterIndex - centerIndex; if(totalChange > 0){ //scrolling backwards loadRange.length = fabsf(totalChange); loadRange.location = centerIndex - 5; unloadRange.length = fabsf(totalChange); unloadRange.location = centerIndex + 6; }else if(totalChange < 0){ //scrolling forwards unloadRange.length = fabsf(totalChange); unloadRange.location = centerIndex - 6; loadRange.length = fabsf(totalChange); loadRange.location = centerIndex + 5; } [self unloadImages:unloadRange]; [self loadImages:loadRange]; lastCenterIndex = centerIndex; return; } - (void) unloadImages:(NSRange)range{ UIScrollView *scrollView = (UIScrollView *)[[self.view subviews] objectAtIndex:0]; for(int i = 0; i < range.length && range.location + i < [scrollView.subviews count]; i++){ UIView *subview = [scrollView.subviews objectAtIndex:(range.location + i)]; if(subview != nil && [subview isKindOfClass:[ThumbnailView class]]){ ThumbnailView *thumbView = (ThumbnailView *)subview; if(thumbView.loaded){ UnloadImageOperation *unloadOperation = [[UnloadImageOperation alloc] initWithOperableImage:thumbView]; [queue addOperation:unloadOperation]; [unloadOperation release]; } } } } - (void) loadImages:(NSRange)range{ UIScrollView *scrollView = (UIScrollView *)[[self.view subviews] objectAtIndex:0]; for(int i = 0; i < range.length && range.location + i < [scrollView.subviews count]; i++){ UIView *subview = [scrollView.subviews objectAtIndex:(range.location + i)]; if(subview != nil && [subview isKindOfClass:[ThumbnailView class]]){ ThumbnailView *thumbView = (ThumbnailView *)subview; if(!thumbView.loaded){ LoadImageOperation *loadOperation = [[LoadImageOperation alloc] initWithOperableImage:thumbView]; [queue addOperation:loadOperation]; [loadOperation release]; } } } } EDIT: Thanks for the really great responses. Here is my NSOperation code and ThumbnailView code. I tried a couple of things over the weekend but I only managed to improve performance by suspending the operation queue during scrolling and resuming it when scrolling is finished. Here are my code snippets: //In the init method queue = [[NSOperationQueue alloc] init]; [queue setMaxConcurrentOperationCount:4]; //In the thumbnail view the loadImage and unloadImage methods - (void) loadImage{ if(!loaded){ NSString *filename = [NSString stringWithFormat:@"%03d-cover-front", recipe.identifier, recipe.identifier]; NSString *directory = [NSString stringWithFormat:@"RestaurantContent/%03d", recipe.identifier]; NSString *path = [[NSBundle mainBundle] pathForResource:filename ofType:@"png" inDirectory:directory]; UIImage *image = [UIImage imageWithContentsOfFile:path]; imageView = [[ImageView alloc] initWithImage:image andFrame:CGRectMake(0.0f, 0.0f, 176.0f, 262.0f)]; [self addSubview:imageView]; [self sendSubviewToBack:imageView]; [imageView release]; loaded = YES; } } - (void) unloadImage{ if(loaded){ [imageView removeFromSuperview]; imageView = nil; loaded = NO; } } Then my load and unload operations: - (id) initWithOperableImage:(id<OperableImage>) anOperableImage{ self = [super init]; if (self != nil) { self.image = anOperableImage; } return self; } //This is the main method in the load image operation - (void)main { [image loadImage]; } //This is the main method in the unload image operation - (void)main { [image unloadImage]; }

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  • SQLite Step Failed: attempt to write a readonly database , using wrapper

    - by user271753
    I keep getting an error "SQLite Step Failed: attempt to write a readonly database" when using this code to copy a database: -(void)createEditableCopyOfDatabaseIfNeeded { // Testing for existence BOOL success; NSFileManager *fileManager = [NSFileManager defaultManager]; NSError *error; NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0]; NSString *writableDBPath = [documentsDirectory stringByAppendingPathComponent:@"Money.sqlite"]; success = [fileManager fileExistsAtPath:writableDBPath]; if (success) return; // The writable database does not exist, so copy the default to // the appropriate location. NSString *defaultDBPath = [[[NSBundle mainBundle] resourcePath] stringByAppendingPathComponent:@"Money.sqlite"]; success = [fileManager copyItemAtPath:defaultDBPath toPath:writableDBPath error:&error]; if(!success) { NSAssert1(0,@"Failed to create writable database file with Message : '%@'.", [error localizedDescription]); } } I am using the above code in AppDelegate and this: NSString *writableDBPath = [[NSBundle mainBundle] pathForResource:@"Money" ofType:@"sqlite"]; In ViewController.m I am using http://th30z.netsons.org/2008/11/objective-c-sqlite-wrapper/ what am I doing wrong? This is happening again and again... It was working fine before but again the problem started.

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  • Sorting a multidimensional array in objective-c

    - by Zen_silence
    Hello, I'm trying to sort a multidimensional array in objective-c i know that i can sort a single dimensional array using the line of code below: NSArray *sortedArray = [someArray sortedArrayUsingSelector:@selector(caseInsensitiveCompare:)]; I can't seem to figure out how to sort a 2D array like the one below: ( ("SOME_URL", "SOME_STORY_TITLE", "SOME_CATEGORY"), ("SOME_URL", "SOME_STORY_TITLE", "SOME_CATEGORY"), ("SOME_URL", "SOME_STORY_TITLE", "SOME_CATEGORY") ); If someone could provide me code that would sort the array by SOME_CATEGORY it would be of great help to me. Thanks, Zen_Silence

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  • Resizing an image with stretchableImageWithLeftCapWidth

    - by Stephan Burlot
    I'm trying to resize an image using stretchableImageWithLeftCapWidth: it works on the simulator, but on the device, vertical green bars appears. I've tried to use imageNamed, imageWithContentOfFile and imageWithData lo load the image, it doesnt change. UIImage *bottomImage = [[UIImage imageWithData: [NSData dataWithContentsOfFile: [NSString stringWithFormat:@"%@/bottom_part.png", [[NSBundle mainBundle] resourcePath]]]] stretchableImageWithLeftCapWidth:27 topCapHeight:9]; UIImageView *bottomView = [[UIImageView alloc] initWithFrame:CGRectMake(10, 200+73, 100, 73)]; [self.view addSubview:bottomView]; UIGraphicsBeginImageContext(CGSizeMake(100, 73)); [bottomImage drawInRect:CGRectMake(0, 0, 100, 73)]; UIImage *bottomResizedImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); bottomView.image = bottomResizedImage; See the result: the green bars shouldn't be there, they dont appear on the simulator.

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  • overridden three20 TTDefaultStyleSheet style not working

    - by funkadelic
    hi, i recently got three20 integrated into my app and am trying to override the default toolbar color in TTWebController. In TTWebController.m:118 I see that this is setting the toolbar's tintColor: _toolbar.tintColor = TTSTYLEVAR(toolbarTintColor); So I created my own stylesheet that subclasses TTDefaultStyleSheet and overrides toolbarTintColor FooStyleSheet.h: #import <Three20Style/Three20Style.h> #import <Three20Style/TTStyleSheet.h> #import <Three20Style/TTDefaultStyleSheet.h> @interface FooStyleSheet : TTDefaultStyleSheet @property (nonatomic, readonly) UIColor* toolbarTintColor; @end FooStyleSheet.m: #import "FooStyleSheet.h" @implementation RaptrStyleSheet - (UIColor*)toolbarTintColor { return RGBCOLOR(0, 0, 0); // should override TTDefaultStyleSheet } @end and in my application:didFinishLaunchingWithOptions: i set my default stylesheet [TTStyleSheet setGlobalStyleSheet:[[[FooStyleSheet alloc] init] autorelease]]; but when I view the TTWebController, it doesn't inherit my tintColor. If I edit TTDefaultStyleSheet.m directly: - (UIColor*)toolbarTintColor { return [UIColor blackColor]; } it works as expected. Is there something I am overlooking that is preventing my style to be picked up? thanks, -norm

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  • Initial selected Item in an UITabBar without a UITabBarController

    - by juan.xavier
    Hello, How do I set the default selected UITabBarItem in an UITabBar that is within an UIView, not an UITabBarController? Just to clarify, the UIView does implement the protocol and the didSelectItem method works. At run-time, the tabbar works and the tabbaritems selected when the user touches them. My problem is setting the default selected item. If i use [myTabbar setSelectedItem] within the didSelectItem method it works. But outside of it, it doesn't (for example, in the viewDidLoad method of my UIView). Thanks!

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  • How do I zoom an MKMapView to the users current location without CLLocationManager?

    - by Danny Tuppeny
    With the MKMapView there's an option called "Show users current location" which will automatically show a users location on the map. I'd like to zoom into this location without adding a CLLocationManager (this seems silly if the map is already taking care of this). The problem is, I can't find a nice event that fires when the map has figured out the users location, so I don't know where to put the code that will zoom/scroll. I tried using the viewForAnnotation method like this: - (MKAnnotationView *) mapView:(MKMapView *)map viewForAnnotation:(id <MKAnnotation>)annotation { if ([annotation class] == [MKUserLocation class] ) { NSLog(@"UserLocation annotation"); return [map viewForAnnotation:annotation]; } return nil; } However it doesn't fire if the users location is off the screen. Is there a way to be notified when an MKMapView has got the user location so I can zoom in to it, or do I just have to add a CLLocationManager for this?

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  • UITextView autoscroll to last line

    - by MihaiD
    Hi *, When writing in a UITextView more text than can fit entirely inside it, the text will scroll up and the cursor will often place itself one or two lines above the view's bottom line. This is a bit frustrating as I want my application to make good use of the entire height of the text view. Basically what I want is to configure the UITextView to write up to it's lowest part and not use it just for scrolling. I've seen some similar questions here, here and here. However I've not seen a proper solution yet. Thanks

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  • MPMoviePlayerController on large videos causes massive memory spike, and a level 1 memory warning

    - by Shizam
    When viewing images my application hums along nicely with low memory consumption, once I try to watch a video using MPMoviePlayerController memory usage spikes way up, dwarfing the previous memory graph and if I play the video it causes a 'memory warning. Level=1' message. The video files (mp4) aren't even that big, 40MB or so, and it doesn't matter if I play the file streamed from a URL or loaded from a local file, actually the memory spike is even worse if I try to stream it. Here is the code I use to create the player: if (_photo.videoPath != nil) { _movieViewController=[[MPMoviePlayerViewController alloc] initWithContentURL:[NSURL fileURLWithPath:_photo.videoPath]]; } else { _movieViewController=[[MPMoviePlayerViewController alloc] initWithContentURL:[NSURL URLWithString:_photo.videoURL]]; } [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(videoMetaListener:) name:MPMovieDurationAvailableNotification object:_movieViewController.moviePlayer]; _movieViewController.moviePlayer.scalingMode=MPMovieScalingModeAspectFit; _movieViewController.moviePlayer.shouldAutoplay = YES; _movieViewController.moviePlayer.controlStyle = MPMovieControlStyleEmbedded; Anybody else running into issues playing video? Also I checked for leaks, there are none reported.

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  • Figuring Out Memory Leaks without Clang

    - by RoLYroLLs
    I'm trying to see if I can find some leaks myself in Apple's TopSongs app. Can someone help me out in at least one and how to identify what is in the Leaks reports and how I can get an idea on finding them? ie: I got one like this: # Category Event Type Timestamp Address Size Responsible Library Responsible Caller 0 GeneralBlock-448 Malloc 00:02.185 0x3f41220 448 libxml2.2.dylib xmlNewParserCtxt From what I can tell, the method xmlNewParserCtxt is the problem, and it's not releasing an object, hence Malloc. The responsible library tells me it's the libxml2.2.dylib library with the problem, which I can't edit. Am I heading in the right direction? If so, half the leaks are in that library and well, i can't edit that.

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