Android RecyclerViewSwipeDismiss：水平、垂直方向的拖曳删除item

我不是女神ヾ 2024-02-17 17:32 5阅读 0赞

**Android RecyclerViewSwipeDismiss：水平、垂直方向的拖曳删除item**

RecyclerViewSwipeDismiss是一种支持RecyclerView的水平、垂直方向拖曳删除RecyclerView里面条目item的第三方开源项目，RecyclerViewSwipeDismiss在gitbub上的项目主页是：[https://github.com/CodeFalling/RecyclerViewSwipeDismiss][https_github.com_CodeFalling_RecyclerViewSwipeDismiss]  
我在以前写过类似的项目内容，最典型的就是腾讯QQ的消息列表，见附录文章1所简介，QQ的消息列表中某一个条目左滑以后会滑出一系列选项，比如删除、置顶等。同样，也有像附录文章2那样左滑右滑可以删除ListView内容的开源项目。  
这篇文章要介绍的RecyclerViewSwipeDismiss，除了支持RecyclerView这个最新的“ListView”外，RecyclerViewSwipeDismiss还支持垂直方向的上滑/下滑，以及水平方向的左滑/右滑删除，这和附录文章1,2的开源项目相比较有其应用场景特色，假设有一个水平方向的RecyclerView，那么我可以设置成垂直方向的滑动删除；假设是一个垂直方向的RecyclerView，那么我可以设置成水平方向的左滑/右滑删除。  
写一个简单的例子，测试的MainActivity.java：

package zhangphil.demo;
    
    import android.app.Activity;
    import android.os.Bundle;
    import android.support.v7.widget.LinearLayoutManager;
    import android.support.v7.widget.RecyclerView;
    import android.view.View;
    import android.view.ViewGroup;
    import android.widget.TextView;
    import android.widget.Toast;
    
    import java.util.LinkedList;
    import java.util.List;
    
    import io.github.codefalling.recyclerviewswipedismiss.SwipeDismissRecyclerViewTouchListener;
    
    public class MainActivity extends Activity {
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
    
            final RecyclerView mRecyclerView = (RecyclerView) findViewById(R.id.recyclerView);
    
            LinearLayoutManager horizontalLayoutManager = new LinearLayoutManager(this);
            horizontalLayoutManager.setOrientation(LinearLayoutManager.HORIZONTAL);
            mRecyclerView.setLayoutManager(horizontalLayoutManager);
    
            List<String> data = new LinkedList<String>();
            for (int i = 0; i < 100; i++)
                data.add("数据:" + i);
    
            final MyAdapter adapter = new MyAdapter(data);
            mRecyclerView.setAdapter(adapter);
    
            SwipeDismissRecyclerViewTouchListener listener = new SwipeDismissRecyclerViewTouchListener.Builder(
                    mRecyclerView,
                    new SwipeDismissRecyclerViewTouchListener.DismissCallbacks() {
                        @Override
                        public boolean canDismiss(int position) {
                            return true;
                        }
    
                        @Override
                        public void onDismiss(View view) {
                            int id = mRecyclerView.getChildPosition(view);
                            adapter.data.remove(id);
                            adapter.notifyDataSetChanged();
                            Toast.makeText(getApplication(), String.format("删除 %d", id), Toast.LENGTH_SHORT).show();
                        }
                    })
                    .setIsVertical(true) /**true为垂直方向拖曳删除，如果是false，那么是水平方向的拖曳删除*/
                    .create();
    
            mRecyclerView.setOnTouchListener(listener);
        }
    
        public class MyAdapter extends RecyclerView.Adapter<MyViewHolder> {
    
            public List<String> data;
    
            public MyAdapter(List<String> data) {
                super();
                this.data = data;
            }
    
            @Override
            public MyViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
                View view = View.inflate(viewGroup.getContext(), android.R.layout.simple_list_item_1, null);
                MyViewHolder holder = new MyViewHolder(view);
                return holder;
            }
    
            @Override
            public void onBindViewHolder(MyViewHolder viewHolder, int i) {
                viewHolder.mTextView.setText(data.get(i));
            }
    
            @Override
            public int getItemCount() {
                return data.size();
            }
        }
    
        private class MyViewHolder extends RecyclerView.ViewHolder {
            public TextView mTextView;
    
            public MyViewHolder(View itemView) {
                super(itemView);
                mTextView = (TextView) itemView;
            }
        }
    }

布局文件：

<?xml version="1.0" encoding="utf-8"?>
    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:tools="http://schemas.android.com/tools"
        android:layout_width="match_parent"
        android:layout_height="match_parent">
    
        <android.support.v7.widget.RecyclerView
            android:id="@+id/recyclerView"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:scrollbars="vertical" />
    
    </RelativeLayout>

运行结果:

![Center][]

在设计时候要注意一些常识，比如，如果设计的是一个水平的RecyclerView，那么比较自然的滑动删除方向是垂直的上滑/下滑；而如果是一个垂直方向的RecyclerView，那么比较自然的滑动删除方向是水平的左滑/右滑。RecyclerViewSwipeDismiss通过setIsVertical(boolean b)布尔值控制，true为垂直方向的上下滑动删除，false则是水平方向的左右滑动删除，开发者应该设计相配套的RecyclerView方向。

附录文章：  
1，《Android SwipeMenuListView》链接地址：[http://blog.csdn.net/zhangphil/article/details/46999127][http_blog.csdn.net_zhangphil_article_details_46999127]  
2，《Android SwipeToDismiss：左滑/右滑删除ListView条目Item》链接地址：[http://blog.csdn.net/zhangphil/article/details/47081863][http_blog.csdn.net_zhangphil_article_details_47081863]

[https_github.com_CodeFalling_RecyclerViewSwipeDismiss]: https://github.com/CodeFalling/RecyclerViewSwipeDismiss
[Center]: https://image.dandelioncloud.cn/pgy_files/images/2024/01/30/646f6bb2653943968db3e27f68c3a6f0.png
[http_blog.csdn.net_zhangphil_article_details_46999127]: http://blog.csdn.net/zhangphil/article/details/46999127
[http_blog.csdn.net_zhangphil_article_details_47081863]: http://blog.csdn.net/zhangphil/article/details/47081863