iOS开发之APP相关

AppDelegate对象方法 代码如下: # 程序第一次启动后才会执行 – (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions; # 程序将要失去焦点时执行 – (void)applicationWillResignActive:(UIApplication *)application; # 程序得到焦点时调用 – (void)applicationDidBecomeActive:(UIApplication *)applicat