android 采用windowmanager屏蔽HOME键

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这篇博客只是一个demo,记录一种思想，采用windowmanager来屏蔽home键，因为采用activity貌似行不通，后来了解了windowmanager之后才明白，记录一下。

//这里只是一个按钮，点击启动一个service

public class MainActivity extends Activity {

    private Button btn_lockscrren;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        btn_lockscrren = (Button) findViewById(R.id.btn_lockscrren);
        btn_lockscrren.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                Intent mIntent = new Intent(MainActivity.this,LockScreenService.class);
                startService(mIntent);
            }
        });
    }
}

关键代码

public class LockScreenService extends Service {

    private View lockScreenView;
    private Button btn_unlock;

    private WindowManager mWindowManager;
    private WindowManager.LayoutParams lp;

    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    @SuppressLint("InlinedApi")
    @Override
    public void onCreate() {
        super.onCreate();
        mWindowManager = (WindowManager) getSystemService(Context.WINDOW_SERVICE);
        lp = new WindowManager.LayoutParams();
        //设置类型
        lp.type = WindowManager.LayoutParams.TYPE_PHONE;
        //设置lp为竖屏显示
        lp.screenOrientation = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT;
        //解除锁屏,如果想查看flags里面的常量是什么意思请点击右边博客链接详细说明了,http://blog.csdn.net/liuhaomatou/article/details/22899925/
        lp.flags |= LayoutParams.FLAG_DISMISS_KEYGUARD;
        lp.flags |= LayoutParams.FLAG_SHOW_WHEN_LOCKED;
        //设置铺满全屏
        lp.flags |= LayoutParams.FLAG_FULLSCREEN;
        //窗口占满整个屏幕，忽略周围的装饰边框
        lp.flags |= LayoutParams.FLAG_LAYOUT_IN_SCREEN;
        if(VERSION.SDK_INT >= VERSION_CODES.KITKAT){
            lp.flags |= LayoutParams.FLAG_TRANSLUCENT_NAVIGATION;
            lp.flags |= LayoutParams.FLAG_TRANSLUCENT_STATUS;
        }
        //设置大小
        lp.width = WindowManager.LayoutParams.MATCH_PARENT;
        lp.height = WindowManager.LayoutParams.MATCH_PARENT;
        //设置开始位置
        lp.x = 0;
        lp.y = 0;
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        if(lockScreenView == null){
            lockScreenView = LayoutInflater.from(getApplicationContext()).inflate(R.layout.layout_inflater, null);
            btn_unlock = (Button) lockScreenView.findViewById(R.id.btn_unlock);
            btn_unlock.setOnClickListener(new OnClickListener() {

                @Override
                public void onClick(View v) {
                    //点击解锁
                    mWindowManager.removeViewImmediate(lockScreenView);
                }
            });
        }
        mWindowManager.addView(lockScreenView, lp);
        return super.onStartCommand(intent, flags, startId);
    }

    @Override
    public void onDestroy() {
        if(mWindowManager != null){
            mWindowManager = null;
        }
        super.onDestroy();
    }

}

最后附上下载链接

http://download.csdn.net/my

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