2020年7月9日 星期四

Android 使用 GestureDetectorCompat 點擊資訊 (含影片教學與專案) [android GestureDetectorCompat screen click info] 


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public class MainActivity extends AppCompatActivity implements
        GestureDetector.OnGestureListener, GestureDetector.OnDoubleTapListener {
    
    TextView txvnInfo;
    GestureDetectorCompat gdcInfo;

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


        txvnInfo = findViewById(R.id.txvInfo);
        gdcInfo = new GestureDetectorCompat(this,this);
        gdcInfo.setOnDoubleTapListener(this);
    }








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    @Override
    public boolean onTouchEvent(MotionEvent event) {
        gdcInfo.onTouchEvent(event);
        return super.onTouchEvent(event);
    }

    @Override
    public boolean onSingleTapConfirmed(MotionEvent e) {
        txvnInfo.setText("onSingleTapConfirmed : " + e.toString());
        return false;
    }

    @Override
    public boolean onDoubleTap(MotionEvent e) {
        txvnInfo.setText("onDoubleTap : " + e.toString());
        return false;
    }

    @Override
    public boolean onDoubleTapEvent(MotionEvent e) {
        txvnInfo.setText("onDoubleTapEvent : " + e.toString());
        return false;
    }

    @Override
    public boolean onDown(MotionEvent e) {
        txvnInfo.setText("onDown : " + e.toString());
        return false;
    }

    @Override
    public void onShowPress(MotionEvent e) {
        txvnInfo.setText("onDown : " + e.toString());

    }

    @Override
    public boolean onSingleTapUp(MotionEvent e) {
        txvnInfo.setText("onSingleTapUp : " + e.toString());
        return false;
    }

    @Override
    public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {
        txvnInfo.setText("onScroll : " + e1.toString() + " " + e2.toString());
        return false;
    }

    @Override
    public void onLongPress(MotionEvent e) {
        txvnInfo.setText("onLongPress : " + e.toString());

    }

    @Override
    public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
        txvnInfo.setText("onFling : " + e1.toString() + " " + e2.toString());
        return false;
    }
}


專案下載：https://ibf.tw/VMZ1s

影片教學：


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