滚动到视图android时，项目动画在recyclerview中停止 [英] Item animation stopping in recyclerview when scrolled off the view android

问题描述

我有一个Recyclerview，在单个列表项中设置了一个动画视图，但是当我滚动recyclerview时，动画正在停止。这是因为recyclerview会从视图中删除项目，因此当我们向后滚动时，它会将其取回！但是现在我希望该动画继续进行，因为只有从服务器获取数据时我才停止动画！

I have a Recyclerview, im animating a view inside individual list item, but when I scroll the recyclerview the animation is stopping. Its because recyclerview removes the items form its view so when we scroll back it fetches it back! But now i want that animation to keep going as I would stop it only when i get data from server!

我想要的是即使在recyclerview滚动并且视图失焦并且出现时，我也不会停止在recylerview内部的单个项目中开始的动画回到焦点！获取服务器数据时，我需要停止代码中的动画！我有在哪里停止动画的代码，如果该项目未从视图中滚动，则它可以工作！

All I want is the animation that I start in the individual items inside the recylerview shouldn't stop even if the recyclerview is scrolled and the view is out of focus and comes back to focus! I need to stop the animation in the code when I get the server data! I have the code where to stop the animation and it works if the item is not scrolled off the view!

btn.onClick-这按钮是recyclerview列表的onClick。
项目1 btn.startAnimation（anim.xml）-开始动画

btn.onClick -- this button is the onClick for the recyclerview list item 1 btn.startAnimation(anim.xml) -- starting the animation

onSuccess-服务器返回成功btn。 clearAnimation（）;

onSuccess -- server returns success btn.clearAnimation();

但在onSuccess之前，如果我们滚动列表，动画将停止！

but before the onSuccess if we scroll the list the animation is stopped!

请帮助！

推荐答案

从crymson的答案中得到启发，我使用View的标记方法代替了在复杂逻辑中设置boolean的方法，几乎​​没有任何简单而有用的解决方案

By inspiring from crymson's answer i have made little easy and useful solution using tag method of View instead setting a boolean in complicated logic of your custom adapter.

@Override
public void onViewDetachedFromWindow(RecyclerView.ViewHolder holder) {
    super.onViewDetachedFromWindow(holder);
    if (holder.getItemViewType() == TYPE_AD)
        ((ViewHolderForAd) holder).ivStory.setTag(false);
}


public class ViewHolderForAd extends RecyclerView.ViewHolder {
        private ImageView ivStory;
        TextView tvName;

    public ViewHolderForAd(View view) {
        super(view);
        ivStory = (ImageView) view.findViewById(R.id.ivStoryImage);
        tvName = (TextView) view.findViewById(R.id.tvAppName);
        view.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                int pos = getAdapterPosition();
                if (pos < 0) {
                    pos = (int) v.getTag();
                }
                customItemClickListener.onItemClicked(v, pos);
            }
        });

       //ivStory.startAnimation(AnimationUtils.loadAnimation(context, R.anim.pulse_story));
        ivStory.setTag(false); //Set default tag false to decrease risk of null
    }
}

 @Override
    public void onBindViewHolder(RecyclerView.ViewHolder viewHolder, int i) {
//...Your code...
if (!(boolean) holder1.ivStory.getTag()) {
     holder1.ivStory.setTag(true);
     holder1.ivStory.startAnimation(AnimationUtils.loadAnimation(context, R.anim.pulse_story));
}
//...Your code...//
}

如果您已经在imageView中标记了某些东西（例如位置），则可以使用setTag（key，object）代替setTag（object）。
希望这对某人有帮助。

You can use setTag(key, object) instead of setTag(object) if you already tagged something(like position) in your imageView. Hope this helps someone.

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