ios淡出闪屏（iphone 5友好） [英] ios fade out splash screen (iphone 5 friendly)

问题描述

每当调用 applicationDidBecomeActive 时，我想要欺骗主闪屏的感觉，但它无法正常工作。我做错了什么？

I'm wanting to spoof the feel of the main splash screen fading out whenever applicationDidBecomeActive is called, but it's not working. What am I doing wrong?

- (void)applicationDidBecomeActive:(UIApplication *)application
{
    if(IS_IPHONE_5)
        splash = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"Default-568h.png"]];
    else
        splash = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"Default.png"]];

    [self.window.rootViewController.view addSubview:splash];

    [UIView animateWithDuration:0.5 
                     animations:^{
                         splash.alpha = 0;
                     }
                     completion:^(BOOL finished) {
                         [splash removeFromSuperview];
                     }];
}

然后你需要在某处定义以下内容。我使用项目 .pch ，但如果需要，可以使用标题。

Then you need to define the following somewhere. I use the project .pch but you can use your header if you want.

#define IS_IPHONE_5 ( fabs( ( double )[ [ UIScreen mainScreen ] bounds ].size.height - ( double )568 ) < DBL_EPSILON )

推荐答案

如果这确实是您的代码，您可能在图像名称中输入了拼写错误。 （如果没有，请告诉我们不工作的含义。）

If that is really your code, you probably have a typo in the image name. (If not, let us know what "not working" means.)

此外，每个 applicationDidBecomeActive通常不会出现启动画面： 。 didFinishLaunchingWithOptions：是您知道自己已经启动并且代表您显示启动画面的时间。

Also, the splash screen doesn't normally come up every applicationDidBecomeActive:. didFinishLaunchingWithOptions: is the time you know that you have been launched and the splash screen had been shown on your behalf.

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