android 程序的完美退出

package com.and.netease.utils;

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

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

/**
* 程序完美退出
* @author ysj
*/
public class ExitApplication extends Application {
private static ExitApplication instance;
private List<Activity> activityList = new LinkedList<Activity>();

private ExitApplication() {
}

// 单例模式中获取唯一的ExitApplication 实例
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);
}
// 遍历所有Activity 并finish
public void exit() {
for (Activity activity : activityList) {
activity.finish();
}
System.exit(0);
}
}



只需要在每个页面创建的时候调用ExitApplication.getInstance().addActivity(this);的方法，结束的时候ExitApplication.getInstance().exit（）就行了