I was looking for the same answer couple of weeks ago here’s my solution hope helps.. -(void)initializeStoryBoardBasedOnScreenSize { if ([UIDevice currentDevice].userInterfaceIdiom == UIUserInterfaceIdiomPhone) { // The iOS device = iPhone or iPod Touch CGSize iOSDeviceScreenSize = [[UIScreen mainScreen] bounds].size; if (iOSDeviceScreenSize.height == 480) { // iPhone 3GS, 4, and 4S and iPod Touch 3rd and … Read more
At long last i have found a solution to this problem! Instead of initializing the audio player with the NSData object, I saved the file to the Documents folder, and then initialized the player with the file URL //download file and play from disk NSData *audioData = [NSData dataWithContentsOfURL:someURL]; NSString *docDirPath = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) … Read more
Those are called Categories and allow you to add further functionality to your classes. A category allows you to add methods to an existing class—even to one for which you do not have the source. Categories are a powerful feature that allows you to extend the functionality of existing classes without subclassing. Using categories, you … Read more
You can do it by extending UITextField class and overriding two methods: – (CGRect)textRectForBounds:(CGRect)bounds; – (CGRect)editingRectForBounds:(CGRect)bounds; Here is the code: The interface in MYTextField.h @interface MYTextField : UITextField @end Its implementation in MYTextField.m @implementation MYTextField static CGFloat leftMargin = 28; – (CGRect)textRectForBounds:(CGRect)bounds { bounds.origin.x += leftMargin; return bounds; } – (CGRect)editingRectForBounds:(CGRect)bounds { bounds.origin.x += leftMargin; … Read more
Rather than the long and confusing urls that you usually see, you can create App Store links that are much simpler and more logical. The iTunes Store has a hidden URL format that’s much more logical. Depending on what you’re linking to, you just need to build a URL in one of these formats: Artist’s … Read more
There’s a project on github called BCTabBarController that aims to mimic the tab bar used in Twitter for iPhone. It’s got some of the things you’re looking for, and should give a great starting point.
The parent/child MOC model is a really powerful feature of Core Data. It simplifies incredibly the age-old concurrency problem we used to have to deal with. However, as you’ve stated, concurrency is not your issue. To answer your questions: Traditionally, you use the NSMainQueueConcurrencyType for the NSManagedObjectContext associated with the main thread, and NSPrivateQueueConcurrencyTypes for … Read more
Push notifications are unreliable and cannot be guaranteed that they have been delivered. It all depends on the apple APNS server, that said, usually when I send a push notification I get the result in under a few seconds. More Information: They are not reliable! There is no guarantee that push notifications will actually be … Read more
Do you mean this one? Keep in mind, this only works for iOS5.0 or later. if ([self.tabBarItem respondsToSelector:@selector(setTitleTextAttributes:)]) { NSLog(@”*** Support method(iOS 5): setTitleTextAttributes:”); [self.tabBarItem setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys: [UIFont fontWithName:@”AmericanTypewriter” size:20.0f], UITextAttributeFont, [UIColor blackColor], UITextAttributeTextColor, [UIColor grayColor], UITextAttributeTextShadowColor, [NSValue valueWithUIOffset:UIOffsetMake(0.0f, 1.0f)], UITextAttributeTextShadowOffset, nil]]; } Apple’s documentation on customizing appearance: In iOS v5.0 and later, you can … Read more
The tangent of a curve is simply its derivative. The parametric equation that Michal uses: P(t) = (1 – t)^3 * P0 + 3t(1-t)^2 * P1 + 3t^2 (1-t) * P2 + t^3 * P3 should have a derivative of dP(t) / dt = -3(1-t)^2 * P0 + 3(1-t)^2 * P1 – 6t(1-t) * P1 … Read more