iOS启动屏后再加个闪屏的方法

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {    self.window.rootViewController.view.alpha = 0;  _splashImageView = [[UIImageView alloc]initWithImage:[UIImage imageNamed:@"Default"]];    _splashImageView.frame = [UIScreen mainScreen].bounds;    [self.window addSubview:_splashImageView];    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(2 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{            [UIView animateWithDuration:0.5 animations:^{                self.window.rootViewController.view.alpha = 1.0;            } completion:^(BOOL finished) {                [_splashImageView removeFromSuperview];            }];    });    return YES;}

自定义图片加载，延时时间，以及动画收回时间。

转载http://www.starming.com/index.php?v=index&view=21