如何在Android Studio中的布局中实现滑动（向左/向右）手势？

Question

我的意图是在布局中实施滑动。 在版面中从左向右滑动时，一个视图将可见和隐藏。

我正在使用Android Studio。 是否有任何可直接使用的库？

Answer 1

您可以使用onfling手势侦听器。 下面为您提供的示例代码

public class MyActivity extends Activity {
private void onCreate() {
 // Set your layout
 final ImageView imageView = (ImageView) findViewById(R.id.image_view);
 imageView.setOnTouchListener(new OnTouchListener() {
    @Override
    public boolean onTouch(final View view, final MotionEvent event) {
       return gdt.onTouchEvent(event);
    }
 });
  }

  private final GestureDetector gdt = new GestureDetector(new     GestureListener());

  private class GestureListener extends SimpleOnGestureListener {

 private final int SWIPE_MIN_DISTANCE = 120;
 private final int SWIPE_THRESHOLD_VELOCITY = 200;

 @Override
 public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) {
    if(e1.getX() - e2.getX() > SWIPE_MIN_DISTANCE && Math.abs(velocityX) >     SWIPE_THRESHOLD_VELOCITY) {
       // Right to left, your code here
       return true;
    } else if (e2.getX() - e1.getX() > SWIPE_MIN_DISTANCE &&     Math.abs(velocityX) >  SWIPE_THRESHOLD_VELOCITY) {
       // Left to right, your code here
       return true;
    }
    if(e1.getY() - e2.getY() > SWIPE_MIN_DISTANCE && Math.abs(velocityY) >     SWIPE_THRESHOLD_VELOCITY) {
       // Bottom to top, your code here
       return true;
    } else if (e2.getY() - e1.getY() > SWIPE_MIN_DISTANCE &&    Math.abs(velocityY) > SWIPE_THRESHOLD_VELOCITY) {
       // Top to bottom, your code here
       return true;
    }
    return false;
   }
  }
  }