如何知道何时使用Default.png从头开始启动应用程序？

Question

有没有办法确定该应用程序是从头开始启动的，这意味着它还没有从后台唤醒，但真的是从无处开始，包括Default.png或Default-iPad.png的显示？

Answer 1

In your App delegate there is a method,

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
   UIAlertView * alert = [[UIAlertView alloc] initWithTitle:@"Only at launch" message:@""   delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
   [alert show];
}