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：
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 data = new LinkedList (); 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 { public List data; public MyAdapter(List 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：
运行结果:
