Android Exit Program

Usually an Android program will correspond to multiple activities, for the end of an activity, usually we think of using finish (), finish is only for the activity, it just pushes the event into the background, does not immediately release memory, the resources are not cleaned up. For example a-〉b (open b window by a window), if you call Finish () in B, just close the b window, the A window will appear. So how do you quit the whole program?

Dalvik Local methods for VMS

1. Android.os.Process.killProcess (Android.os.Process.myPid ()) //Get PID, kill process

2. system.exit (0); //Normal Java, C # Standard Exit method, the return value of 0 means normal exit

 Public void Exitprogrames () {        new  Intent (intent.action_main);        Startmain.addcategory (intent.category_home);        Startmain.setflags (intent.flag_activity_new_task);        StartActivity (startmain);        Android.os.Process.killProcess (Android.os.Process.myPid ());         // or System.exit (0);    }

Ii. Task Manager method

Premise: Android 1.5 API level is above 3

Need permission: <uses-permission android:name=\ "Android.permission.restart_packages\" ></uses-permission>

Code:

Activitymanager Actmanager = (Activitymanager) Getsystemservice (Context.activity_service); Actmanager.restartpackage (Getpackagename ());

Iii. Customizing the implementation of management activity

//manage activity in a single-case mode Public classActivitymanger {List<Activity> activitylist =NewLinkedlist<activity>(); Private StaticActivitymanger instance;  PublicActivitymanger getinstance () {if(Instance = =NULL) {instance=NewActivitymanger (); }        returninstance; }        //Add Activity     Public voidaddactivity (activity activity) {Activitylist.add (activity); }        //Traverse close each activity     Public voidexit () { for(Activity activity:activitylist) {activity.finish (); }    }}

Iv. adoption of the Intent.flag_activity_clear_top

A when opening B, add a flag to the Intent intent.flag_activity_clear_top

New Intent (); Intent.setclass (A. This, B.class); Intent.setflags (intent.flag_activity_clear_top);   //Settings FLAG

When B is started, all activity for that process space is cleared.

Android Exit Program