android 彻底关闭应用程序

Android让App彻底退出的实现方法。
1)先在AndroidManifest.xml文件中添加<uses-permission android:name="android.permission.RESTART_PACKAGES" />

2)然后在自己的Activity重写onKeyDown()方法。具体实现如下：

[java] view
plaincopy

@Override

public boolean onKeyDown(int keyCode, KeyEvent event) {

if(keyCode==KeyEvent.KEYCODE_BACK&&event.getRepeatCount()==0){

AlertDialog.Builder alertbBuilder=new AlertDialog.Builder(this);

alertbBuilder.setTitle("真的要离开？").setMessage("你确定要离开？").setPositiveButton("确定", new DialogInterface.OnClickListener() {

@Override

public void onClick(DialogInterface dialog, int which) {

//结束这个Activity

int nPid = android.os.Process.myPid();

android.os.Process.killProcess(nPid);

}

}).setNegativeButton("取消", new DialogInterface.OnClickListener() {

@Override

public void onClick(DialogInterface dialog, int which) {

dialog.cancel();

}

}).create();

alertbBuilder.show();

}

return true;

}

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