Android Security exits the application

1. Kill the process. This method is ineffective and can only kill the currentActivityThe program cannot be closed, which is useful in 1.5. Google designed the program to prevent suicide.android.os.Process.killProcess(android.os.Process.myPid()).
2. Terminating a running Java Virtual Machine causes program termination. This method is ineffective becauseAndroidYesdalvikVirtual MachineSystem.exit(0);
3. Force disable all operations associated with the package. This method can only kill others and cannot kill yourself.
   Java ActivityManager manager = (ActivityManager) getSystemService (Context. ACTIVITY_SERVICE); manager. restartPackage (getPackageName (); permission application required

   Since the three methods described above have no effect, how can we exit the application?
   Is to customizeApplicationInApplicationDefineListTo record each EnabledActivityTo traverseListSet, and then proceed one by onemActivity.finish()Method.ActivityAre addedListInActivityWhen exitingListRemove it from the set.
   '''Java public class Activity01 extends Activity {

   @Overridepublic void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.main);    MyApp myApp = (MyApp) getApplication();    myApp.activies.add(this);}@Overrideprotected void onDestroy() {    super.onDestroy();    MyApp myApp = (MyApp) getApplication();    myApp.activies.remove(this);}public void click1(View view){    Intent intent = new Intent(this,Activity01.class);    startActivity(intent);}public void click2(View view){    Intent intent = new Intent(this,Activity02.class);    startActivity(intent);}public void exit(View view){    MyApp myApp = (MyApp) getApplication();     for(Activity ac : myApp.activies){         ac.finish();     }}

   }

   Public class Activity02 extends Activity {

   @Overridepublic void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.main2);    MyApp myApp = (MyApp) getApplication();    myApp.activies.add(this);}public void click1(View view) {    Intent intent = new Intent(this, Activity01.class);    startActivity(intent);}public void click2(View view) {    Intent intent = new Intent(this, Activity02.class);    startActivity(intent);}public void exit(View view) {    MyApp myApp = (MyApp) getApplication();    for (Activity ac : myApp.activies) {        ac.finish();    }}@Overrideprotected void onDestroy() {    super.onDestroy();    MyApp myApp = (MyApp) getApplication();    myApp.activies.remove(this);}

   }

   Public class MyApp extends Application {// stores all activity public List activies opened in the current Application; @ Override public void onCreate () {activies = new ArrayList (); super. onCreate ();}}