Methods In AppDelegate, and AppDelegate Methods

Methods In AppDelegate, and AppDelegate Methods



Method OverviewdidFinishLaunchingWithOptions:(NSDictionary *)launchOptionsIt is called only when the application is started. The launchOptions below contains parameters when the application is started from outside. If you receive the transfer, click push to open the application.
applicationWillResignActiveApplicationbackgroundBefore calling
applicationDidEnterBackgroundApplicationbackgroundCall
applicationWillEnterForegroundApplicationactiveBefore calling
applicationDidBeconeActiveApplicationactiveCall
applicationWillTerminateApplicationnot runingCalled before (closed)
Common scenarios:

1. Start the application:

2. • didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
   • applicationDidBeconeActive

3. Click home in the application:

4. • applicationWillResignActive
   • applicationDidEnterBackground

5. The application runs in the background and opens the application again:

6. • applicationWillEnterForeground
   • applicationDidBeconeActive

7. Double-click home to select the current application:

8. • applicationWillResignActive
   • applicationDidBeconeActive

9. Double-click home to select another application:

10. • applicationWillResignActive
    • applicationDidEnterBackground

11. Double-click home to close the application:

12. • applicationWillResignActive
    • applicationDidEnterBackground
      
    • applicationWillTerminate

Status related to several methods in AppDelegate: 1.not running2.background3. active
The actual application status: (see the iOS Application Status switch off http://blog.csdn.net/duanyipeng/article/details/7101829)
1. not running2.background3. active4.inactive5. suincluded