import java.util.List;

import android.app.Activity;

import android.app.Application;

/**

 * 用於處理退出程序時可以退出所有的activity，而編寫的通用類

 * 每個Activity在oncreate的時候都需調用MyApplication.getInstance().addActivity(this);

 * 以便將當前Activity加入到Activity集合中

 * @author duanyr

 *

 */

public class MyApplication extends Application {

private List<Activity> activityList = new LinkedList<Activity>();

private static MyApplication instance;

private MyApplication() {

}

// 單例模式中獲取唯一的MyApplication實例

public static MyApplication getInstance() {

if (null == instance) {

instance = new MyApplication();

}

return instance;

}

// 添加Activity到容器中

public void addActivity(Activity activity) {

activityList.add(activity);

}

// 遍曆所有Activity並finish

public void exit() {

for (Activity activity : activityList) {

activity.finish();

}

System.exit(0);

}

}