Android 滑动手势和项目点击在 RecyclerView 中不能一起工作

Question

我使用 recyclerview 实现了日历。导航到上个月和下个月，根据要求，客户想要滑动功能。

所以我使用以下代码实现了该功能：

recyclerView.setOnTouchListener(new OnSwipeTouchListener(context) {
        public void onSwipeTop() {

        }

        public void onSwipeRight() {
            onPreviousMonth();
        }

        public void onSwipeLeft() {
            onNextMonth();
        }

        public void onSwipeBottom() {

        }
    });

使用这个 touchListener，它可以完全用于日历的滑动功能。

But after adding this feature, click of the recyclerview item not working. When I remove touch listener, click of the recyclerview item working perfectly.

我在代码中遗漏了什么？任何的想法？两者没有一起工作。

这是 OnSwipeTouchListener：

public class OnSwipeTouchListener implements OnTouchListener {

private final GestureDetector gestureDetector;

public OnSwipeTouchListener(Context ctx) {
    gestureDetector = new GestureDetector(ctx, new GestureListener());
}

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

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();
                    }
                    result = true;
                }
            } else if (Math.abs(diffY) > SWIPE_THRESHOLD && Math.abs(velocityY) > SWIPE_VELOCITY_THRESHOLD) {
                if (diffY > 0) {
                    onSwipeBottom();
                } else {
                    onSwipeTop();
                }
                result = true;
            }
        } catch (Exception exception) {
            exception.printStackTrace();
        }
        return result;
    }
}

public void onSwipeRight() {
}

public void onSwipeLeft() {
}

public void onSwipeTop() {
}

public void onSwipeBottom() {
}

}

Answer 1

你可以这样添加逻辑，

view.setOnTouchListener(new View.OnTouchListener() {
    @Override
    public boolean onTouch(View v, MotionEvent event) {

        switch (event.getAction()) {

            case MotionEvent.ACTION_DOWN:
                x1 = event.getX();
                y1 = event.getY();
                t1 = System.currentTimeMillis();
                return true;
            case MotionEvent.ACTION_UP:
                x2 = event.getX();
                y2 = event.getY();
                t2 = System.currentTimeMillis();

                if (x1 == x2 && y1 == y2 && (t2 - t1) < DURATION_TO_CONSIDER_CLICK) {
                    // Consider as normal click or tap
                } else if ((t2 - t1) >= DURATION_TO_CONSIDER_CLICK) {
                    // Consider as long click or tap
                } else if (x1 > x2) {
                    // Consider as left swipe
                } else if (x2 > x1) {
                    // Consider as right swipe
                } 
                return true;
        }
        return false;
    }

请注意，这仅供参考，您可能需要稍微更改以上逻辑才能满足您的期望。谢谢

Answer 2

您应该确保 TouchListener 没有消耗触摸事件。如果您从 onTouch() 方法 return 为真，Android 将认为它已消耗并且不会将其传递给其他各种触摸处理程序（我假设将包括 ClickListener）。

Answer 3

我会考虑将 ItemTouchHelper 附加到您的 RecyclerView。

实现是这样的：

new ItemTouchHelper(new ItemTouchHelper.SimpleCallback(0, ItemTouchHelper.RIGHT | ItemTouchHelper.LEFT) {
        @Override
        public boolean onMove(@NonNull RecyclerView recyclerView, @NonNull RecyclerView.ViewHolder viewHolder, @NonNull RecyclerView.ViewHolder viewHolder1) {
            return false;
        }

        @Override
        public void onSwiped(@NonNull RecyclerView.ViewHolder viewHolder, int direction) {
            if (direction == ItemTouchHelper.RIGHT) {
                onPreviousMonth();
            } else if (direction == ItemTouchHelper.LEFT) {
                onNextMonth();
            }
        }
    }).attachToRecyclerView(recyclerView);

Android 滑动手势和项目点击在 RecyclerView 中不能一起工作

Android Swipe gesture and item click both not working together in RecyclerView

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