Android单击按钮即可删除所有带有动画的recyclerview [英] Android remove all recyclerview with animation on a button click

问题描述

我有一个回收站视图。在按钮上单击我想从recyclerview中删除所有项目，但是必须使用动画删除这些项目。
我可以一次删除所有项目，但是我不知道如何使用动画删除它们。谢谢

I have a recycler view. On a button click I want to remove all the items from the recyclerview but the items must be removed with animation. I am able to remove all the items at once but I don't know how to remove them with animation. Thanks

推荐答案

它很旧，但是希望它对其他人有所帮助，因为它尚未得到答复。我通过模拟一个项目的一次滑动动画来一次删除一个项目，并在删除下一个项目之前发布了一个延迟，依此类推直到的最后一个项目RecyclerView

It's old, but wish this helps someone else as it's already not answered yet; I have done it by deleting a single item at a time by simulating a swipe animation on this item, and post a delay before deleting the next item, and so on to the way down to the last item of the RecyclerView

第1步：

在包含清除所有按钮和 RecyclerView 实例的活动中：创建删除单个项目的方法

In your activity that holds the clear all button and the RecyclerView instance: Create a method of single item delete

private void deleteItem(View rowView, final int position) {

    Animation anim = AnimationUtils.loadAnimation(requireContext(),
            android.R.anim.slide_out_right);
    anim.setDuration(300);
    rowView.startAnimation(anim);

    new Handler().postDelayed(new Runnable() {
        public void run() {
            if (myDataSource.size() == 0) {
                addEmptyView(); // adding empty view instead of the RecyclerView
                return;
            }
            myDataSource.remove(position); //Remove the current content from the array
            myRVAdapter.notifyDataSetChanged(); //Refresh list
        }

    }, anim.getDuration());
}

第二步：

创建将删除所有 RecyclerView 列表项的方法>>在按钮单击回调中调用它。

Create the method that will delete all RecyclerView list items >> call it in your button click callback.

boolean mStopHandler = false;

private void deleteAllItems() {

    final Handler handler = new Handler();
    Runnable runnable = new Runnable() {
        @Override
        public void run() {

            if (myDataSource.size() == 0) {
                mStopHandler = true;
            }

            if (!mStopHandler) {
                View v = myRecyclerView.findViewHolderForAdapterPosition(0).itemView;
                deleteItem(v, 0);
            } else {
                handler.removeCallbacksAndMessages(null);
            }

            handler.postDelayed(this, 250);
        }
    };
    requireActivity().runOnUiThread(runnable);
}

同样重要的是处理清单，活动部分中的配置更改，就像清除回收者视图列表时更改配置，将引发异常

Also it's important to handle configuration change in manifest, activity section, as if the configuration changes while clearing your recycler view list, an exception will be raised

<activity
    android:name=".activities.MainActivity"
    android:configChanges="orientation|screenSize|keyboard"
    android:label="@string/app_name">
    ...
</activity>

这篇关于Android单击按钮即可删除所有带有动画的recyclerview的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！