Android應用程式退出執行個體

1、Application當中代碼：
[java] public class WeiboApplication extends Application { 
 
    // 程式退出標記  
    private List<Activity> activities = new ArrayList<Activity>(); 
 
    public void addActivity(Activity activity) { 
        activities.add(activity); 
    } 
 
    @Override 
    public void onTerminate() { 
        super.onTerminate(); 
 
        for (Activity activity : activities) { 
            activity.finish(); 
        } 
 
        android.os.Process.killProcess(android.os.Process.myPid()); 
    } 
 
} 
public class WeiboApplication extends Application {

 // 程式退出標記
 private List<Activity> activities = new ArrayList<Activity>();

 public void addActivity(Activity activity) {
  activities.add(activity);
 }

 @Override
 public void onTerminate() {
  super.onTerminate();

  for (Activity activity : activities) {
   activity.finish();
  }

  android.os.Process.killProcess(android.os.Process.myPid());
 }

}

2、每個Activity在oncreate當中的代碼：
[java]@Override 
    public void onCreate(Bundle savedInstanceState) { 
        super.onCreate(savedInstanceState); 
        this.requestWindowFeature(Window.FEATURE_NO_TITLE); 
        setContentView(R.layout.main_activity); 
         
        WeiboApplication app = (WeiboApplication) getApplication(); 
        app.addActivity(this); 
    } 
@Override
 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  this.requestWindowFeature(Window.FEATURE_NO_TITLE);
  setContentView(R.layout.main_activity);
  
  WeiboApplication app = (WeiboApplication) getApplication();
  app.addActivity(this);
 }

3、在TabActivity當中設定結束代碼（類似的可以在普通Activity當中設定）
[java] @Override 
    public boolean dispatchKeyEvent(KeyEvent event) { 
        if (event.getAction() == KeyEvent.ACTION_DOWN 
                && event.getKeyCode() == KeyEvent.KEYCODE_BACK) { 
 
            // 建立對話方塊 www.2cto.com   
            LayoutInflater li = LayoutInflater.from(this); 
            View exitV = li.inflate(R.layout.exitdialog, null); 
            AlertDialog.Builder ab = new AlertDialog.Builder(this); 
            ab.setView(exitV);// 設定對話方塊顯示的View對象  
            ab.setPositiveButton(R.string.menu_logout_label, new OnClickListener() { 
                public void onClick(DialogInterface arg0, int arg1) { 
                    // TODO Auto-generated method stub  
                    WeiboApplication app = (WeiboApplication) getApplication(); 
                    app.onTerminate(); 
                } 
            }); 
            ab.setNegativeButton(R.string.cancel_button_title, null); 
            // 顯示對話方塊  
            ab.show(); 
            return false; 
        } 
        return false; 
    }; 
 

摘自  Snowball