CATransition in AppDelegate - didFinishLaunchingWithOptions

Question

我已经在另一个应用程序中实现了这段代码，而且的工作得很好。现在，相同的代码是而不是在这里工作(I am导入QuartzCore framewok).日志消息被调用。有人能帮帮我吗？提前谢谢。这是我的密码：

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {    

    // Override point for customization after application launch.
    [NSThread sleepForTimeInterval:1.5];

    CATransition *transition = [CATransition animation];
    transition.delegate = self;
    transition.duration = 1.5;
    transition.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
    transition.type = kCATransitionFade;

    [[window layer] addAnimation:transition forKey:nil];

    [window addSubview:[navigationController view]];
    [window makeKeyAndVisible];

    return YES;
}

- (void)animationDidStop:(CAAnimation *)theAnimation finished: (BOOL)flag
{
    NSLog(@"Animation did stop!");
}

Answer 1

移动：

    [[window layer] addAnimation:transition forKey:nil];

如下所示：

    [window makeKeyAndVisible];

您正在显式地创建动画，但是您要将动画应用于“之前”，您希望将Subview添加到窗口。通过将其放置在下面，您可以告诉窗口您想要对子视图的位置进行动画化。