android中listview的item滑动删除效果（已解决listview点击问题）

时间：2022-07-03 16:41:25

领导看到iphone上tableview有个滑动删除的效果，要求在android上也实现，搜了下资料，实现起来比较简单，可弄到后面，居然不能点击了，把一篇文章中的代码修改了一下，捣鼓了一番，搞定，下面是代码：

 package com.example.listsildedel;

 import java.util.ArrayList;

 import java.util.List;

 import android.app.Activity;

 import android.content.Intent;

 import android.os.Bundle;

 import android.widget.ListView;

 public class MainActivity extends Activity {

     private ListView mListView;

     @Override

     public void onCreate(Bundle savedInstanceState) {

         super.onCreate(savedInstanceState);

         setContentView(R.layout.activity_main);

         mListView = (ListView) this.findViewById(R.id.list);

         List<String> list = new ArrayList<String>();

         for(int i=0;i<10;i++){

             list.add("选项"+i);

         }

         //实例化自定义内容适配类

         MyAdapter adapter = new MyAdapter(this, this,list);

         //为listView设置适配

         mListView.setAdapter(adapter);

     }

     public void openActivity(){

         Intent intent  = new Intent(this, TestActivity.class);

         startActivity(intent);

     }

 }

adapter:

 package com.example.listsildedel;

 import java.util.List;

 import android.content.Context;

 import android.view.LayoutInflater;

 import android.view.MotionEvent;

 import android.view.View;

 import android.view.View.OnClickListener;

 import android.view.View.OnTouchListener;

 import android.view.ViewGroup;

 import android.widget.BaseAdapter;

 import android.widget.Button;

 import android.widget.TextView;

 public class MyAdapter extends BaseAdapter {

     private List<String> arrays = null;

     private Context mContext;

     private Button curDel_btn;

     private float x,ux;

     private MainActivity mActivity;

     public MyAdapter(MainActivity activity, Context mContext, List<String> arrays) {

         this.mContext = mContext;

         this.arrays = arrays;

         mActivity = activity;

     }

     public int getCount() {

         return this.arrays.size();

     }

     public Object getItem(int position) {

         return null;

     }

     public long getItemId(int position) {

         return position;

     }

     public View getView(final int position, View view, ViewGroup arg2) {

         ViewHolder viewHolder = null;

         if (view == null) {

             viewHolder = new ViewHolder();

             view = LayoutInflater.from(mContext).inflate(R.layout.item, null);

             viewHolder.tvTitle = (TextView) view.findViewById(R.id.title);

             viewHolder.btnDel = (Button) view.findViewById(R.id.del);

             view.setTag(viewHolder);

         } else {

             viewHolder = (ViewHolder) view.getTag();

         }

         //换掉了原来listview中的onItemClick

         <span style="font-size:18px;"><strong>view.setOnClickListener(new OnClickListener() {

             public void onClick(View v) {

                 // TODO Auto-generated method stub

                 mActivity.openActivity();

             }

         });</strong></span>

         //为每一个view项设置触控监听

         view.setOnTouchListener(new OnTouchListener() {

             public boolean onTouch(View v, MotionEvent event) {

                 final ViewHolder holder = (ViewHolder) v.getTag();

                 //当按下时处理

                 if (event.getAction() == MotionEvent.ACTION_DOWN) {

 //                    //设置背景为选中状态

 //                    v.setBackgroundResource(R.drawable.mm_listitem_pressed);

                     //获取按下时的x轴坐标

                     x = event.getX();

                     //判断之前是否出现了删除按钮如果存在就隐藏

                     if (curDel_btn != null) {

                         if(curDel_btn.getVisibility() == View.VISIBLE){

                             curDel_btn.setVisibility(View.GONE);

                             return true;

                         }

                     }

                 } else if (event.getAction() == MotionEvent.ACTION_UP) {// 松开处理

                     //设置背景为未选中正常状态

                     //v.setBackgroundResource(R.drawable.mm_listitem_simple);

                     //获取松开时的x坐标

                     ux = event.getX();

                     //判断当前项中按钮控件不为空时

                     if (holder.btnDel != null) {

                         //按下和松开绝对值差当大于20时显示删除按钮，否则不显示

                         if (Math.abs(x - ux) > 20) {

                             holder.btnDel.setVisibility(View.VISIBLE);

                             curDel_btn = holder.btnDel;

                             return true;

                         }

                     }

                 } else if (event.getAction() == MotionEvent.ACTION_MOVE) {//当滑动时背景为选中状态

                     return true;

                     //v.setBackgroundResource(R.drawable.mm_listitem_pressed);

                 } else {//其他模式

                     //设置背景为未选中正常状态

                     //v.setBackgroundResource(R.drawable.mm_listitem_simple);

                 }

                 return false;

             }

         });

         viewHolder.tvTitle.setText(this.arrays.get(position));

         //为删除按钮添加监听事件，实现点击删除按钮时删除该项

         viewHolder.btnDel.setOnClickListener(new OnClickListener() {

             public void onClick(View v) {

                 if(curDel_btn!=null)

                     curDel_btn.setVisibility(View.GONE);

                 arrays.remove(position);

                 notifyDataSetChanged();

             }

         });

         return view;

     }

     final static class ViewHolder {

         TextView tvTitle;

         Button btnDel;

     }

 }

android中listview的item滑动删除效果（已解决listview点击问题）       android中listview的item滑动删除效果（已解决listview点击问题）

代码下载: http://download.csdn.net/detail/wulingbo2005/6691885

转载请注明出处

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