SwipeView detect swipe left, right, top, bottom

SwipeView

import android.content.Context;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.widget.RelativeLayout;

/**
 * Created by NguyenLinh on 17,June,2020
 */
public class SwipeView extends RelativeLayout implements View.OnTouchListener {
    private SwipeCallback swipeCallback;
    private SwipeDirection detectSwipeDirection;
    float x1, x2, y1, y2;

    public SwipeView(Context context) {
        super(context);
    }

    public SwipeView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public SwipeView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }

    public SwipeView(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
        super(context, attrs, defStyleAttr, defStyleRes);
    }

    public void detectLeft(SwipeCallback swipeCallback) {
        this.swipeCallback = swipeCallback;
        detectSwipeDirection = SwipeDirection.LEFT;
    }

    @Override
    public boolean onInterceptTouchEvent(MotionEvent event) {
        switch (event.getAction()) {
            case MotionEvent.ACTION_DOWN:
                x1 = event.getX();
                y1 = event.getY();
                break;
            case MotionEvent.ACTION_UP:
                x2 = event.getX();
                y2 = event.getY();
                SwipeDirection direction = null;

                float xDiff = x2 - x1;
                float yDiff = y2 - y1;
                if (Math.abs(xDiff) > Math.abs(yDiff)) {
                    if (x1 < x2) {
                        direction = SwipeDirection.RIGHT;
                    } else {
                        direction = SwipeDirection.LEFT;
                    }
                }

                if (detectSwipeDirection != null) {
                    if (direction == SwipeDirection.RIGHT) {
                        swipeCallback.onSwipeRight();
                    }
                    if (direction == SwipeDirection.LEFT) {
                        swipeCallback.onSwipeLeft();
                    }
                    if ( direction == SwipeDirection.TOP ){
                        swipeCallback.onSwipeTop();
                    }
                    if ( direction == SwipeDirection.BOTTOM ){
                        swipeCallback.onSwipeBottom();
                    }
                }
                break;
        }
        return false;
    }

    @Override
    public boolean onTouch(View view, MotionEvent event) {
        return super.onTouchEvent(event);
    }

    public enum SwipeDirection {
        TOP, RIGHT, BOTTOM, LEFT
    }

    public interface SwipeCallback {
        default void onSwipeTop(){}
        default void onSwipeRight(){}
        default void onSwipeBottom(){}
        default void onSwipeLeft(){}
    }
}