仿qq的listView 滑动删除

国庆没有事做，第一次写博客，搞安卓那么久了一直都是学习别人的，然后也没有贡献，觉得写点东西容易让自己记住。

 

ui效果不是很好，但是效果还是有的，先上图初始进入就这效果，点击进入内容详情页面，滑动会产生，可以执行相关的操作

QQListView

package com.demo.activity;

import android.content.Context;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.widget.ListView;

public class QQListView extends ListView{

 public QQListView(Context context) {
  super(context);
 }

 public QQListView(Context context, AttributeSet attrs, int defStyle) {
  super(context, attrs, defStyle);
  
 }

 public QQListView(Context context, AttributeSet attrs) {
  super(context, attrs);
  
 }
 //将 onInterceptTouchEvent的返回值设置为false，取消其对触摸事件的处理，将事件分发给子view

 @Override

 public boolean onInterceptTouchEvent(MotionEvent ev) {
 return false;

 }

 

}

 

其实就一简单的listView,通过事件分发一下，返回值为false的时候，让子控件能够消费传递过来的事件

 

QQListViewActivity

package com.demo.activity;

import java.util.ArrayList;
import java.util.List;

import android.app.Activity;
import android.os.Bundle;

public class QQListViewActivity extends Activity {
    private QQListView  qqlistview;
    private MyAdapter mAdapter;
    private List<Info>infos;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        qqlistview=(QQListView) findViewById(R.id.qqlistview);
        infos=new ArrayList<Info>();
        Info i=new Info();
        i.setNick("efwaefgdf");
        i.setType(1);
        infos.add(i);
        Info info=new Info();
        info.setNick("hjjh");
        info.setType(2);
        infos.add(info);
        mAdapter=new MyAdapter(QQListViewActivity.this, infos);
        qqlistview.setAdapter(mAdapter);
    }
}

MyAdapter

package com.demo.activity;

import java.util.List;

import android.content.Context;
import android.content.Intent;
import android.net.Uri;
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.LinearLayout;
import android.widget.TextView;

public class MyAdapter extends BaseAdapter {
    private Context context;
    private List<Info>infos;
    private float x,ux;
 public MyAdapter(Context context, List<Info> infos) {
  super();
  this.context = context;
  this.infos = infos;
 }

 @Override
 public int getCount() {
  
  return infos.size();
 }

 @Override
 public Object getItem(int postion) {
  
  return infos.get(postion);
 }

 @Override
 public long getItemId(int position) {
  
  return position;
 }

 @Override
 public View getView(final int position, View convertView, ViewGroup parent) {
  ViewHolder holder=null;
  if(convertView==null){
   holder=new ViewHolder();
   convertView = findView(holder);
   
  }else{
   holder=(ViewHolder) convertView.getTag();
  }
  holder.content.setText(infos.get(position).getNick());
  convertView.setOnClickListener(new OnClickListener() {
   
   @Override
   public void onClick(View v) {
    Intent content=new Intent(context, ContentActivity.class);
    context.startActivity(content);
    
   }
  });
  convertView.setOnTouchListener(new OnTouchListener() {
   
   @Override
   public boolean onTouch(View v, MotionEvent event) {
    final ViewHolder holder = (ViewHolder) v.getTag();
    
    if(event.getAction()==MotionEvent.ACTION_DOWN){
     //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 (holder.liner != null) {
      if(holder.liner.getVisibility() == View.VISIBLE){
       holder.liner.setVisibility(View.GONE);
       return true;
      }
     }
    }else if(event.getAction()==MotionEvent.ACTION_UP){
     //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.liner != 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.liner.setVisibility(View.VISIBLE);
       return true;
      }
     }
     
    }else if(event.getAction() == MotionEvent.ACTION_MOVE){
     if(infos.get(position).getType()==1){
      holder.call.setText("打电话");
     }else{
      holder.call.setText("其他");
     }
     holder.delete.setText("删除");
     return true;
    }else{
     
    }
    return false;
   }
  });
  holder.call.setOnClickListener(new OnClickListener() {
   
   @Override
   public void onClick(View v) {
    if(infos.get(position).getType()==1){//打电话
     Intent call=new Intent();
     call.setAction(Intent.ACTION_CALL);
     call.setData(Uri.parse("tel:"+10086));
     context.startActivity(call);
    }
    //qi他
    .........
   }
  });
  holder.delete.setOnClickListener(new OnClickListener() {
   
   @Override
   public void onClick(View v) {
    infos.remove(position);
    notifyDataSetChanged();
    notifyDataSetInvalidated();
   }
  });
  return convertView;
 }

 private View findView(ViewHolder holder) {
  View convertView;
  convertView=LayoutInflater.from(context).inflate(R.layout.list_item,null);
  holder.content = (TextView) convertView.findViewById(R.id.content);
  holder.liner = (LinearLayout) convertView.findViewById(R.id.liner);
  holder.call = (TextView) convertView.findViewById(R.id.call);
  holder.delete = (TextView) convertView.findViewById(R.id.delete);
  convertView.setTag(holder);
  return convertView;
 }

    class ViewHolder{
     TextView content;
     LinearLayout liner;
     TextView call;
     TextView delete;
    }
}

main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="#FFFFFF"
    android:orientation="vertical" >

   <com.demo.activity.QQListView
       android:layout_width="fill_parent"
       android:layout_height="fill_parent"
       android:background="#FFFFFF"
       android:id="@+id/qqlistview"
       >
   </com.demo.activity.QQListView>

</LinearLayout>

 

list_item.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="50dp" >

    <TextView
        android:id="@+id/content"
        android:layout_width="200dp"
        android:layout_height="wrap_content"
        android:layout_margin="10dp"
        android:textSize="20dp" />

    <LinearLayout
        android:id="@+id/liner"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:orientation="horizontal"
        android:visibility="gone" >

        <TextView
            android:id="@+id/call"
            android:layout_width="50dp"
            android:layout_height="30dp"
            android:layout_marginTop="10dp"
            android:gravity="center"
            android:layout_marginBottom="10dp"
            android:background="@drawable/call" />

        <TextView
            android:id="@+id/delete"
            android:layout_width="50dp"
            android:layout_height="30dp"
            android:gravity="center"
           android:layout_marginTop="10dp"
            android:layout_marginBottom="10dp"
            android:background="@drawable/delete" />
    </LinearLayout>

</RelativeLayout>

有需要源码的》》》》》》》