终止iPhone应用程序时调用什么方法？

Question

I am making a client server application for the iPhone and would like to know which method is called when the iPhone application is terminated. Any help would be appreciated.

Answer 1

The method relating to application lifecycle are UIApplicationDelegate methods. The two you want are:

- (void)applicationWillTerminate:(UIApplication *)application
- (void)applicationDidEnterBackground:(UIApplication *)application

If on a multitasking device, applicationDidEnterBackground: will be called instead of applicationWillTerminate: . In most cases, you can perform the same code in both callbacks.

Answer 2

- (void)applicationWillTerminate:(UIApplication *)application

在您的appdelegate中

Answer 3

The method applicationWillTerminate gets called when your application is being shut down. But the applicationDidEnterBackground/applicationWillResignActive methods are (now) infinitely more useful.

Answer 4

-(void)applicationWillTerminate:(UIApplication *)application in your application delegate will be called. Check this blog post with chart that describes in detail what messages will be sent during launch, termination and when transitioning between background and foreground.