iphone-sdk-3.0

I have the following code to open google maps: NSString *urlString = [NSString stringWithFormat:@"http://maps.google.com/maps?q=%@, Anchorage, AK",addressString]; [[UIApplication sharedApplication] openURL:[NSURL URLWithString:urlString]]; But it doesn't work and there is no error. It just doesn't open. URLWithString requires a percent-escaped string. Your sample url contains spaces which results in a nil NSURL being created. Additionally, the addressString may also contain characters that need to be escaped. Try percent-escaping the url string first: NSString *urlString = [NSString

I noticed that NSHomeDirectory returns a different path each time i restart the App with Xcode, and apparently even if i click the icon manually since it doesn't load the file's contents. I'm stunned that it gives me a different directory each time i restart the app. This happens on both simulator and device and even if i use the "ForUser" method. My calls look like this: NSString* fullPath = [NSHomeDirectory() stringByAppendingPathComponent:@"test.file"]; or NSString* fullPath = [NSHomeDirectoryForUser(@"MrX") stringByAppendingPathComponent:@"test.file"]; or even NSString *docsDirectory =

I find MPMoviePlayerController.h,there is enum { MPMovieLoadStateUnknown = 0, MPMovieLoadStatePlayable = 1 << 0, MPMovieLoadStatePlaythroughOK = 1 << 1, // Playback will be automatically started in this state when shouldAutoplay is YES MPMovieLoadStateStalled = 1 << 2, // Playback will be automatically paused in this state, if started }; typedef NSInteger MPMovieLoadState; but when i did NSLog(@"%d",player.loadState) it prints out 5 or sometimes 3,how did it happen?As i know the loadstate has value of 0,1,2,4 refer to developer documentation. Thank you! The playState is a bitmask. Any number

I am creating an application in that I need to send a JSON to the server to get some response. How to generate JSON using JSON Framework for iPhone? What are the other possible ways? Create an array or dictionary of objects representing the information you want to send via JSON. Having done that, send -JSONRepresentation to the array/dictionary. That method returns a JSON string, and you send it to the server. For instance: NSDictionary *o1 = [NSDictionary dictionaryWithObjectsAndKeys: @"some value", @"key1", @"another value", @"key2", nil]; NSDictionary *o2 = [NSDictionary