import java.util.LinkedList;
import java.util.List;

import android.app.Activity;
import android.app.Application;

public class ExitApplication extends Application {

 private List activityList = new LinkedList();
 private static ExitApplication instance;

 private ExitApplication()
 {
 }
 //單例模式中獲取唯一的ExitApplication實例
 public static ExitApplication getInstance()
 {
 if(null == instance)
 {
 instance = new ExitApplication();
 }
 return instance;

 }
 //添加Activity到容器中
 public void addActivity(Activity activity)
 {
 activityList.add(activity);
 }
 //遍歷所有Activity并finish

 public void exit()
 {

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

 System.exit(0);

 }
 }