UIAlertView自動半閉，UIAlertView半閉

UIAlertView自動半閉，UIAlertView半閉

 

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代碼：

- (void)viewDidLoad{    [super viewDidLoad];    // Do any additional setup after loading the view.        //alert    UIAlertView *alert=[[UIAlertView alloc]initWithTitle:nil message:@"一個可以自動關閉的Alert視窗" delegate:self cancelButtonTitle:nil otherButtonTitles:nil, nil];    [alert show];        //顯示框    UIActivityIndicatorView *indicator = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];    indicator.backgroundColor=[UIColor redColor];    indicator.center = CGPointMake(alert.bounds.size.width/2,  alert.bounds.size.height-40.0);    [indicator startAnimating];        [alert insertSubview:indicator atIndex:0];        //定時器    [NSTimer scheduledTimerWithTimeInterval:3.0f target:self selector:@selector(dismissAlert:) userInfo:[NSDictionary dictionaryWithObjectsAndKeys:alert, @"alert", @"testing ", @"key" ,nil]  repeats:NO];}//alert 自動消失-(void) dismissAlert:(NSTimer *)timer{        UIAlertView *alert = [[timer userInfo]  objectForKey:@"alert"];    [alert dismissWithClickedButtonIndex:0 animated:YES];    }