1、先添加权限

<uses-permission android:name="android.permission.RESTART_PACKAGES" />

2、添加Activity管理类

package net.oschina.app;import java.util.Stack;import android.app.Activity;import android.app.ActivityManager;import android.content.Context;/** * 应用程序Activity管理类 * @author  liux */public class AppManager {        private static Stack
     
       activityStack;    private static AppManager instance;        private AppManager(){}    /**     * 单一实例     */    public static AppManager getAppManager(){        if(instance==null){            instance=new AppManager();        }        return instance;    }    /**     * 添加Activity到堆栈     */    public void addActivity(Activity activity){        if(activityStack==null){            activityStack=new Stack
      
       ();        }        activityStack.add(activity);    }    /**     * 获取当前Activity（堆栈中最后一个压入的）     */    public Activity currentActivity(){        Activity activity=activityStack.lastElement();        return activity;    }    /**     * 结束当前Activity（堆栈中最后一个压入的）     */    public void finishActivity(){        Activity activity=activityStack.lastElement();        if(activity!=null){            activity.finish();            activity=null;        }    }    /**     * 结束指定的Activity     */    public void finishActivity(Activity activity){        if(activity!=null){            activityStack.remove(activity);            activity.finish();            activity=null;        }    }    /**     * 结束指定类名的Activity     */    public void finishActivity(Class
        cls){        for (Activity activity : activityStack) {            if(activity.getClass().equals(cls) ){                finishActivity(activity);            }        }    }    /**     * 结束所有Activity     */    public void finishAllActivity(){        for (int i = 0, size = activityStack.size(); i < size; i++){            if (null != activityStack.get(i)){                activityStack.get(i).finish();            }        }        activityStack.clear();    }    /**     * 退出应用程序     */    public void AppExit(Context context) {        try {            finishAllActivity();            ActivityManager activityMgr= (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);            activityMgr.restartPackage(context.getPackageName());            System.exit(0);        } catch (Exception e) {    }    }}
      
     

3、使用AppManager类

1）当Activity启动时，在onCreate中添加：AppManager.getAppManager().addActivity(this);

2）当要退出Activity时，使用：AppManager.getAppManager().AppExit(this);