[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(applicationWillResignActive:)name:UIApplicationWillResignActiveNotification object:nil]; //监听是否触发home键挂起程序. [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(applicationDidBecomeActive:)name:UIApplicationDidBecomeActiveNotification object:nil]; //监听是否重新进入程序程序
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(applicationWillResignActive:)
name:UIApplicationWillResignActiveNotification object:nil]; //监听是否触发home键挂起程序.
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(applicationDidBecomeActive:)
name:UIApplicationDidBecomeActiveNotification object:nil]; //监听是否重新进入程序程序