By

  1. 比较粗鲁的方式-杀进程
android.os.Process.killProcess(android.os.Process.myPid());
System.exit(0);
  1. 使用ActivityManager的restartPackage方法，这种方法需要注意的是需要运行在Android 1.5 API Level为3以上才可以，并且需要权限
ActivityManager am = (ActivityManager)getSystemService (Context.ACTIVITY_SERVICE);
am.restartPackage(getPackageName());

所需权限：

<uses-permission android:name="android.permission.RESTART_PACKAGES"></uses-permission>
  1. 使用FLAG_ACTIVITY_CLEAR_TOP 方式

使用FLAG_ACTIVITY_CLEAR_TOP 启动第一个Activity也就是MAIN的那个Activity然后在需要全部退出时调用finish

Intent intent = new Intent(); 
intent.setClass(xxxx,xxxxx); 
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); 
startActivity(intent);
````

下面是我自己之前写的一个退出整个应用的方式使用的是ActivityLifeCycleCallback + 单例也是个人比较推崇的方式：

public abstract class MyApplication extends Application {

private static List<Activity> mActivityList = new LinkedList<Activity>();
@Override
public void onCreate() {
    super.onCreate();
    if(mActivityList!= null) {
        mActivityList.clear();
    }
    registerActivityLifecycleCallbacks (new Application.ActivityLifecycleCallbacks() {

        public void	onActivityCreated(Activity activity, Bundle savedInstanceState) {
            if(mActivityList != null) {
                mActivityList.add(activity);
            }
        }
        public void	onActivityDestroyed(Activity activity) {
            if(mActivityList != null && mActivityList.contains(activity)) {
                mActivityList.remove(activity);
            }
        }
        public void	onActivityPaused(Activity activity) {
        }

        public void	onActivityResumed(Activity activity) {

        }
        public void	onActivitySaveInstanceState(Activity activity, Bundle outState) {}
        public void	onActivityStarted(Activity activity) {
        }
        
        public void	onActivityStopped(Activity activity) {
        }
    });
}

public static void  exitAppication(MixEngineService.callbackBefore callbackBefore) {
    if(mActivityList != null) {
        int activityCount = mActivityList.size();
        for(int i =0;i<activityCount;i++) {
            Activity activity = mActivityList.get(i);
            if(activity != null) {
                activity.finish();
                activity.overridePendingTransition(0, R.anim.exitapplication_anim);
            }
        }
        System.exit(0);
    }
}

}
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