RecyclerView ItemTouchHelper 如何锁定刷卡项目? [英] How can RecyclerView ItemTouchHelper lock swipe item?

问题描述

我使用带有 ItemTouchHelper 的 RecyclerView 进行滑动删除，并在滑动项下添加删除按钮，如下所示:

I use RecyclerView with ItemTouchHelper to do swiping to remove, and add delete button under the swipe item like this:

但是当我刷完后，该项目很快就会从列表中删除！如何锁定刷过的项目，并通过单击删除按钮将其删除?就像 Gmail 的行为一样.

But when I finish swiping, the item will be removed from the list soon! How can I lock the swiped item, and removed by clicking the delete button? Just like Gmail's behavior.

ps.我在这里发布同样的问题https://code.google.com/p/android/issues/detail?can=2&start=0&num=100&q=&colspec=ID%20Type%20Status%20Owner%20Summary%20Stars&groupby=&sort=&id=189057

ps. I post same issues here https://code.google.com/p/android/issues/detail?can=2&start=0&num=100&q=&colspec=ID%20Type%20Status%20Owner%20Summary%20Stars&groupby=&sort=&id=189057

推荐答案

@Override
public void onChildDraw(Canvas c, RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, float dX, float dY, int actionState, boolean isCurrentlyActive) {
    float translationX;
    if(dX > 0){
      translationX = Math.min(-dX, viewHolder.itemView.getWidth() / 2);
    }
    else {
       translationX = Math.max(dX, (-1)* viewHolder.itemView.getWidth() / 2);
    }
    super.onChildDraw(c, recyclerView, viewHolder, translationX, dY, actionState, isCurrentlyActive);
}

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