左右滑动跳页

[oybo]

作者您好，我这发现有比较大的概率，左右一直滑动，突然像放电影一样一直往前翻，到第0页，不知道是什么问题。

[yichunyen]

@oybo I had the same issue when I used the Horizontal Recycler View. If you do not use the loop recycler view, please check the RecyclerViewPager.java line 510. The targetPosition sometimes will return 0 if you scroll fast. I solved it since remarked all codes about targetPosition.

Good luck.

[oybo]

@yichunyen Thank you very much. According to what you say, I added a judgment in smoothScrollToPosition method public void smoothScrollToPosition(int position) { if (mType == PageType.horizontal) { // This is my own if(Math.abs(getCurrentPosition() - position) != 1) { return; } } ..... But don't know if I can completely solve the problem, Could you tell me how do you solve?

[yichunyen]

@oybo This is my fixed codes that I forked from this.

[oybo]

@yichunyen Thank you, hello, I found that there are still problems, can appear targetPosition return 0. So I add a judgment :

public void smoothScrollToPosition(int position) {
    if (DEBUG) {
        Log.d("@", "smoothScrollToPosition:" + position);
    }

    if (mPositionBeforeScroll < 0) {
        mPositionBeforeScroll = getCurrentPosition();
    }
if(Math.abs(position - getCurrentPosition()) > 1) {
        position = getCurrentPosition();
    }
    mSmoothScrollTargetPosition = position;

[yichunyen]

@oybo How did you reproduce your issues? Currently, it seldom occurs in my project.

[que123567]

横滑的情况下，修改一下ViewUtils类的这个方法

 public static int getCenterXChildPosition(RecyclerView recyclerView) {
        int childCount = recyclerView.getChildCount();
        if (childCount > 0) {
            for (int i = 0; i < childCount; i++) {
                View child = recyclerView.getChildAt(i);
                 //这个接口有时会一直返回false，导致最后return childCount，所以就回到了某个固定页
                if (isChildInCenterX(recyclerView, child)) {
                    return recyclerView.getChildAdapterPosition(child);
                }
            }
             //只添加这行就可以修复这个问题
            return recyclerView.getChildAdapterPosition(recyclerView.getChildAt(0));
        }

        return childCount;
  }

[que123567]

@oybo How did you reproduce your issues? Currently, it seldom occurs in my project.

Using your left hand slide it to right and at the same time use your right hand to slide it to the left side.（The orientation of view is horizontal）