应用程序特定信息：应用程序未能及时启动（iOS）？

这是我的一份崩溃报告的顶部。 Apple 是否规定了应用程序启动超时限制？如果是这样，有什么常见的解决方法吗？

Elapsed total CPU time (seconds): 13.700 (user 8.580, system 5.120), 67% CPU 
Elapsed application CPU time (seconds): 6.180, 30% CPU

在 iPhone 3G 上。

也许我必须拆分/延迟我的启动任务......

我认为它必须在 5（或可能 10）秒内启动，否则 iPhone 会认为它已经崩溃了。

尽量避免在启动时在主线程上加载大量内容。如果您需要加载很多东西，请在后台线程上执行，如下所示：

- (void)startLoading
{
    //call this in your app delegate instead of setting window.rootViewController to your main view controller
    //you can show a UIActivityIndiocatorView here or something if you like

    [self performSelectorInBackground:@selector(loadInBackground)];
}

- (void)loadInBackground
{
    //do your loading here
    //this is in the background, so don't try to access any UI elements

    [self performSelectorOnMainThread:@selector(finishedLoading) withObject:nil waituntilDone:NO];
}

- (void)finishedLoading
{
    //back on the main thread now, it's safe to show your view controller
    window.rootViewController = viewController;
    [window makeKeyAndVisible];
}