RecyclerView 滑动查看下方视图

问题描述

我一直在做一些研究，但我还没有找到一个示例或实现，可以让您在滑动时在 RecyclerView 下方放置一个视图(下面的示例图像).有没有人有任何示例或关于如何使用库不实现这一点的想法.

I have been doing some research and I have yet to find an example or implementation that allows you to put a view (Example Image Below) underneath the RecyclerView when you swipe. Does anyone have any example or an idea of how this would be implemented WITHOUT using a library.

这是我如何实现滑动以关闭.

Here is how I am implementing the swipe to dismiss.

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:

Here is the example of Google's Inbox:

推荐答案

我对如何实现的理解是将两个视图放在 xml 中，它们将在您的回收视图中每行显示.

My understanding of how this is done is that one would put two views in the xml that would be displayed per line in your recyclerview.

例如，这将是我的适配器:

So for example, this would be my adapter:

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 中拉取 xml 布局.因此，要在下方创建视图，您只需使用 relativelayout 或 framelayout 在彼此之上创建视图:

Each line in the recyclerview is pulling the xml layout from R.layout.example. Therefore, to create a view underneath, you can just use relativelayout or framelayout to create the views on top of one another:

<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>

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

Then if you do not want to use a library for the swipe, you can copy this class from google and subsequently modified by Bruno Romeu Nunes:

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

该课程将要求您创建一个滑动监听器:

The class will require you to create a swipe listener:

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视图链接:

Then simply link it with your recyclerview:

    mRecyclerView.addOnItemTouchListener(swipeTouchListener);

这篇关于RecyclerView 滑动查看下方视图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！