检测'预先'事件？

Question

如何在iPhone4或更高版本中检测后台运行应用程序中的“带前”事件？

Answer 1

- (void)applicationDidBecomeActive:(UIApplication *)application;将被调用，但不会被调用。

- (void)applicationDidFinishLaunching:(UIApplication *)application; 
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions;