我一直在做一些研究，但我还没有找到一个示例或实现，允许您在滑动时在 RecyclerView 下方放置一个 View (下面的示例图像)。有没有人有任何示例或想法如何不使用使用库来实现。

这是我如何实现滑动关闭。

ItemTouchHelper.SimpleCallback simpleItemTouchCallback = new ItemTouchHelper.SimpleCallback(0, ItemTouchHelper.LEFT | ItemTouchHelper.RIGHT) {

    @Override
    public boolean onMove(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder, RecyclerView.ViewHolder target) {
        return false;
    }

    @Override
    public int getSwipeDirs(RecyclerView recyclerView, RecyclerView.ViewHolder viewHolder) {
        return super.getSwipeDirs(recyclerView, viewHolder);
    }

    @Override
    public void onSwiped(RecyclerView.ViewHolder viewHolder, int direction) {
        if (viewHolder instanceof ViewDividers) {
            Log.e("DIRECTION", direction + "");
        }
    }
};
new ItemTouchHelper(simpleItemTouchCallback).attachToRecyclerView(recycler);

以下是 Google 收件箱的示例:

最佳答案

我对如何做到这一点的理解是，可以在 xml 中放置两个 View ，这些 View 将在您的 recyclerview 中按行显示。

例如，这将是我的适配器:

public class MyAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
    public static class ExampleViewHolder extends RecyclerView.ViewHolder {
        public TextView background;
        public TextView foreground;

        public ExampleViewHolder(View v) {
            super(v);
            background = (TextView) v.findViewById(R.id.background);
            foreground = (TextView) v.findViewById(R.id.foreground);
        }

        @Override
        public void onBindViewHolder(final RecyclerView.ViewHolder holder, final int position) {
            if (holder instanceof ExampleViewHolder) {
                ((ExampleViewHolder) holder).background.setBackgroundColor(); // do your manipulation of background and foreground here.
            }
        }

        @Override
        public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent,
                                                          int viewType) {

            View v = LayoutInflater.from(parent.getContext())
                    .inflate(R.layout.example, parent, false);
            return new ExampleViewHolder(v);
        }


    }
}

recyclerview 中的每一行都从 R.layout.example 中提取 xml 布局。因此，要在下面创建 View ，您只需使用 relativelayout 或 framelayout 将 View 创建在另一个之上:

<RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/background"
        />

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/foreground"/>
</RelativeLayout>

如果你不想使用库进行滑动，你可以从 google 复制这个类，然后由 Bruno Romeu Nunes 修改:

https://github.com/heruoxin/Clip-Stack/blob/master/app/src/main/java/com/catchingnow/tinyclipboardmanager/SwipeableRecyclerViewTouchListener.java

该类(class)将要求您创建一个滑动监听器:

swipeTouchListener =
        new SwipeableRecyclerViewTouchListener(mRecyclerView,
                new SwipeableRecyclerViewTouchListener.SwipeListener() {
                    @Override
                    public boolean canSwipe(int position) {
                        if (position == totalPost.size() - 1 && !connected) {
                            return false;
                        }
                        return true;
                    }

                    @Override
                    public void onDismissedBySwipeLeft(RecyclerView recyclerView, int[] reverseSortedPositions) {
                        for (int position : reverseSortedPositions) {
                            //change some data if you swipe left
                        }
                        myAdapter.notifyDataSetChanged();
                    }

                    @Override
                    public void onDismissedBySwipeRight(RecyclerView recyclerView, int[] reverseSortedPositions) {
                        for (int position : reverseSortedPositions) {
                            //change some data if you swipe right
                        }
                        myAdapter.notifyDataSetChanged();
                    }
                });

然后只需将其与您的回收站 View 链接:

    mRecyclerView.addOnItemTouchListener(swipeTouchListener);

关于android - RecyclerView 用它下面的 View 滑动，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/32227482/