老規(guī)矩，先上圖

floatView.gif

演示中用的是CardView嵌套的ListView,背景是攝像頭试幽，接下來說實現(xiàn)氏义。理論上所有的View都能這么玩

講一下大體邏輯，很簡單窗慎，監(jiān)聽水平儀來動態(tài)改變來動態(tài)設置View的位置物喷，接下來帖代碼。

相機處理用的是自己封裝的工具遮斥，喜歡的可以拿去用

public class MainActivity extends AppCompatActivity implements SensorEventListener {


    private SensorManager sensorManager;
    private Sensor defaultSensor;
    private static final String TAG = "MainActivity";
    private SurfaceView sfv;
    private CardView cv;
    private ListView lv;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initView();
        sensorManager = (SensorManager) getSystemService(SENSOR_SERVICE);//獲得傳感器管理
        defaultSensor = sensorManager.getDefaultSensor(Sensor.TYPE_ORIENTATION);//設置類型
    }


    @Override
    protected void onResume() {
        super.onResume();
        sensorManager.registerListener(this, defaultSensor, SensorManager.SENSOR_DELAY_GAME);//注冊傳感器
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        sensorManager.unregisterListener(this);//注銷傳感器
        CameraUtils.getInstance().closeCamera(sfv,MainActivity.this);//釋放攝像頭
    }

    @Override
    public void onSensorChanged(SensorEvent event) {
        changeLocation(event.values[1], event.values[2]);
    }


    private void changeLocation(float y, float z) {
        FrameLayout.LayoutParams layoutParams = (FrameLayout.LayoutParams) cv.getLayoutParams();
        layoutParams.setMargins((int) z * 2, (int) y * 2, 0, 0);//乘2的作用是為了讓效果明顯點
        cv.setLayoutParams(layoutParams);

    }


    @Override
    public void onAccuracyChanged(Sensor sensor, int accuracy) {
    }

    private void initView() {
        sfv = (SurfaceView) findViewById(R.id.sfv);
        cv = (CardView) findViewById(R.id.cv);
        lv = (ListView) findViewById(R.id.lv);
        CameraUtils.getInstance().openCamera(sfv,MainActivity.this);//打開相機
        lv.setAdapter(new MyAdapter());

    }

    class MyAdapter extends BaseAdapter{

        @Override
        public int getCount() {
            return 10;
        }

        @Override
        public Object getItem(int position) {
            return null;
        }

        @Override
        public long getItemId(int position) {
            return position;
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            if(convertView == null){
                convertView = View.inflate(getApplicationContext(),R.layout.item,null);
            }
            return convertView;
        }
    }
}

添加權限

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

Demo地址：https://github.com/bertsir/FloatView
幫助到你了希望給個Start,有問題下面留言峦失，會回復