ios4

问题 I have tabbar-based application. When I put in my plist UIBackgroundModes (my application is supposed to support voip), the GUI doesn't load. It sucks on Splash screen and doesn't load the first tab view. When i remove the UIBackgroundModes property from info.plist, it works fine. More than that, pressing the home button when it stuck does nothing. Did somebody encountered a similar problem? (The problem exists on simulator) Thanks, Nava 回答1: It appears, that the problem happens on Simulator

问题 Hi I'm a have an app in which i load webpage in a uiwebview .So each time it takes too much time for loading . So i need to load the webpage in a background mode. Any one know how to done this. Any help would be appreciable. 回答1: - (void) start_Web_View { UIWebView *wv = [[UIWebView alloc] initWithFrame:CGRectMake(0,0,320,460)]; wv.delegate = self; [wv loadRequest: [NSURLRequest requestWithURL: @"http://long_loading_web_site"]]; // go do something else to amuse the user while the web site

问题 I am working on creating a very simple app. 2 buttons, both play sound. Each clip lasts 1 second and responds to "TouchUpInside". They are .caf files that I converted in iTunes. Here is my code, once again, it works in the simulator but not on the device: enter code here- (void)viewDidLoad { NSLog(@"InView did load"); AudioServicesCreateSystemSoundID ((CFURLRef)[NSURL fileURLWithPath:[[NSBundle mainBundle]pathForResource:@"bigaif" ofType:@"caf"]], &systemSoundID);

问题 I'm building a Facebook app that calls a Facebook dialog box to allow users to share a post. Using the facebook documentation, a call to the facebook object: [appDelegate.facebook dialog:@"feed" andDelegate:self]; opens the dialog box I need. However, the keyboard for user input doesn't popup, and all I can do is post a blank post up on my wall. Has anyone else encountered this? 回答1: Did you ever figure out how to resolve this issue? I'm seeing the same thing. I'm using the three20 framework

问题 Is it possible to implement touchdown for UILabel? 回答1: UILabel is a subclass of UIView , which is itself a subclass of UIResponder ; therefore, it’s definitely possible to make a label that responds to touches. Just make a new subclass of UILabel and implement the following method(s): – touchesBegan:withEvent: – touchesMoved:withEvent: – touchesEnded:withEvent: – touchesCancelled:withEvent: So, if you wanted something to happen when touches started, you’d do it in -touchesBegan:withEvent: .

问题 Anyone knows why I get this crash from the ibtool? ibtool --generate-strings-file "my.strings" "myViewController.xib" Result: 2011-04-18 17:49:41.848 ibtoold[32147:107] -[NSCFString count]: unrecognized selector sent to instance 0x20055f7e0 <?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>com.apple.ibtool.errors</key> <array> <dict> <key>description</key> <string

问题 I wanted to play a Youtube video in the iPhone from within the application. I tried using the MPMoviePlayerController, but was not loading the video. It is playing the video which I loaded from the bundle but not the you tube video. I also tried to play the Youtube video by embedding it in the UIWebView, but that also was in vain. Can anybody suggest me an approach that i should take. i am testing it in the IOS 4.2 This is the code i used. mp = [[MPMoviePlayerController alloc]

问题 I wanted to play a Youtube video in the iPhone from within the application. I tried using the MPMoviePlayerController, but was not loading the video. It is playing the video which I loaded from the bundle but not the you tube video. I also tried to play the Youtube video by embedding it in the UIWebView, but that also was in vain. Can anybody suggest me an approach that i should take. i am testing it in the IOS 4.2 This is the code i used. mp = [[MPMoviePlayerController alloc]

问题 I am currently testing an app on an iPhone 3G with iOS 4.0. I have the following code to check if this Class is available. if (NSClassFromString(@"CLGeocoder")) In the documentation it states that CLGeocoder is available for iOs 5.0 and later. But the code above does not return nil. Why? this Class should not be available in iOS 4.0 回答1: To check if CLGeocoder is available and it is really running iOS 5 I used the following: if (NSClassFromString(@"CLGeocoder") && [NSClassFromString(@

问题 This question already has answers here : How can I convert NSMutableArray into NSString? (3 answers) Closed 6 years ago . hi all how to convert NSMutableArray values into the NSString when i did as like Webservices *details=[[Webservices alloc] init]; [details getMobileNumberDetails:phnotextfield.text]; NSLog(@"longitudes Arrays from %@",details.resultData); "-91.57696007", "10.343234", "74.982343", "76.464844", "76.464844", "2.256", but when implemented like this theCoordinate2.longitude = [