用户滑动手势滑动按钮

Question

我希望用户能够用手指在垂直或水平方向（而不是对角线）滑动按钮的长度。

示例：按钮长且宽50dp。 用户将向右滑动，按钮将向右移动50dp。

现在，我有以下代码，根据用户滑动的方式正确提示Toast。

GameScreen

public class GameScreen extends Activity {

    Button btn1;

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

        btn1 = (Button)findViewById(R.id.button1);
        btn1.setText("BUTTON");
        btn1.setOnTouchListener(new OnSwipeTouchListener() {
            public void onSwipeTop() {
                Toast.makeText(GameScreen.this, "top", Toast.LENGTH_SHORT).show();
            }
            public void onSwipeRight() {
                Toast.makeText(GameScreen.this, "right", Toast.LENGTH_SHORT).show();
            }
            public void onSwipeLeft() {
                Toast.makeText(GameScreen.this, "left", Toast.LENGTH_SHORT).show();
            }
            public void onSwipeBottom() {
                Toast.makeText(GameScreen.this, "bottom", Toast.LENGTH_SHORT).show();
            }
        });
    }
}

OnSwipeTouchListener

public class OnSwipeTouchListener implements OnTouchListener {

    Context context;

    private final GestureDetector gestureDetector = new GestureDetector(context, new GestureListener());

    public boolean onTouch(final View view, final MotionEvent motionEvent) {
        return gestureDetector.onTouchEvent(motionEvent);
    }

    private final class GestureListener extends SimpleOnGestureListener {

        private static final int SWIPE_THRESHOLD = 100;
        private static final int SWIPE_VELOCITY_THRESHOLD = 100;

        @Override
        public boolean onDown(MotionEvent e) {
            return true;
        }

        @Override
        public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
            boolean result = false;
            try {
                float diffY = e2.getY() - e1.getY();
                float diffX = e2.getX() - e1.getX();
                if (Math.abs(diffX) > Math.abs(diffY)) {
                    if (Math.abs(diffX) > SWIPE_THRESHOLD && Math.abs(velocityX) > SWIPE_VELOCITY_THRESHOLD) {
                        if (diffX > 0) {
                            onSwipeRight();
                        } else {
                            onSwipeLeft();
                        }
                    }
                } else {
                    if (Math.abs(diffY) > SWIPE_THRESHOLD && Math.abs(velocityY) > SWIPE_VELOCITY_THRESHOLD) {
                        if (diffY > 0) {
                            onSwipeBottom();
                        } else {
                            onSwipeTop();
                        }
                    }
                }
            } catch (Exception exception) {
                exception.printStackTrace();
            }
            return result;
        }
    }

    public void onSwipeRight() {
    }

    public void onSwipeLeft() {
    }

    public void onSwipeTop() {
    }

    public void onSwipeBottom() {
    }
}

我的问题是我如何才能使按钮真正移动而不仅仅是提示Toast？

Answer 1

触摸当前位置并在btn1.setTranslationX（）和setTranslationY（）中进行设置。