一次刷一个项目 Recyclerview [英] Swipe one item at a time Recyclerview

问题描述

我尝试为回收站视图添加滚动侦听器并制定了一些逻辑，但我无法一次滑动一项.我在互联网上进行了一些搜索，但我得到了一些具有自定义回收器视图的第三方库.我们可以在回收站视图中一次实现一项滑动吗?如果是请告诉如何?像这样图片一次滑动一个项目.

I tried adding on Scroll listener for recycler view and made some logic but i am not able to swipe one item at a time. I did some search on internet but i got some third party library which has custom recycler view. Can we implement one item swipe at a time in recycler view? If yes Please tell how? One item swipe at a time like this image.

推荐答案

这软化了项目之间的移动:

This softens the movement between items:

public class SnapHelperOneByOne extends LinearSnapHelper {

    @Override
    public int findTargetSnapPosition(RecyclerView.LayoutManager layoutManager, int velocityX, int velocityY) {

        if (!(layoutManager instanceof RecyclerView.SmoothScroller.ScrollVectorProvider)) {
            return RecyclerView.NO_POSITION;
        }

        final View currentView = findSnapView(layoutManager);

        if (currentView == null) {
            return RecyclerView.NO_POSITION;
        }

        LinearLayoutManager myLayoutManager = (LinearLayoutManager) layoutManager;

        int position1 = myLayoutManager.findFirstVisibleItemPosition();
        int position2 = myLayoutManager.findLastVisibleItemPosition();

        int currentPosition = layoutManager.getPosition(currentView);

        if (velocityX > 400) {
            currentPosition = position2;
        } else if (velocityX < 400) {
            currentPosition = position1;
        }

        if (currentPosition == RecyclerView.NO_POSITION) {
            return RecyclerView.NO_POSITION;
        }

        return currentPosition;
    }
}

例子:

LinearSnapHelper linearSnapHelper = new SnapHelperOneByOne();
linearSnapHelper.attachToRecyclerView(recyclerView);

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