android为ListView每个Item上面的按钮添加事件

本文介绍了listview给每个item上面的按钮添加事件，具体如下：

1.先看下效果图：
在这里仅供测试，我把数据都写死了，根据需要可以自己进行修改，此外实现listview上面每个item上的button的事件有两种方法：

1.使用final变量扩展局部变量的生命周期范围主要代码（本文最后附全部代码）：

//注意原本getview方法中的int position变量是非final的，现在改为final 
    @override 
    public view getview(final int position, view convertview, viewgroup parent) { 
       viewholder holder = null; 
      if (convertview == null) { 
         
        holder=new viewholder();  
         
        //可以理解为从vlist获取view 之后把view返回给listview 
        convertview = minflater.inflate(r.layout.vlist, null); 
        holder.title = (textview)convertview.findviewbyid(r.id.title); 
        holder.info = (textview)convertview.findviewbyid(r.id.info); 
        holder.viewbtn = (button)convertview.findviewbyid(r.id.view_btn); 
        convertview.settag(holder);        
      }else {        
        holder = (viewholder)convertview.gettag(); 
      }     
       
      holder.title.settext((string)mdata.get(position).get("title")); 
      holder.info.settext((string)mdata.get(position).get("info")); 
      holder.viewbtn.settag(position); 
      //给button添加单击事件 添加button之后listview将失去焦点 需要的直接把button的焦点去掉 
      holder.viewbtn.setonclicklistener(new view.onclicklistener() { 
         
        @override 
        public void onclick(view v) { 
          showinfo(position);          
        } 
      }); 
       
      //holder.viewbtn.setonclicklistener(mylistener(position)); 
           
      return convertview; 
    } 
  } 
   
  //提取出来方便点 
  public final class viewholder { 
    public textview title; 
    public textview info; 
    public button viewbtn; 
  } 
  public void showinfo(int position){ 
     
    imageview img=new imageview(listviewactivity.this); 
    img.setimageresource(r.drawable.b); 
    new alertdialog.builder(this).setview(img) 
    .settitle("详情"+position) 
    .setmessage("菜名："+title[position]+"  价格:"+info[position]) 
    .setpositivebutton("确定", new dialoginterface.onclicklistener() { 
      @override 
      public void onclick(dialoginterface dialog, int which) { 
      } 
    }) 
    .show(); 
  } 

2.使用类记录每个button的位置，使每个button都有自己的listener主要代码：

//****************************************第二种方法，高手一般都用此种方法,具体原因，我还不清楚,有待研究 
   
    public view getview(int position, view convertview, viewgroup parent) { 
       viewholder holder = null; 
       mylistener mylistener=null; 
      if (convertview == null) { 
         
        holder=new viewholder();  
         
        //可以理解为从vlist获取view 之后把view返回给listview 
         mylistener=new mylistener(position); 
           
        convertview = minflater.inflate(r.layout.vlist, null); 
        holder.title = (textview)convertview.findviewbyid(r.id.title); 
        holder.info = (textview)convertview.findviewbyid(r.id.info); 
        holder.viewbtn = (button)convertview.findviewbyid(r.id.view_btn); 
        convertview.settag(holder);        
      }else {        
        holder = (viewholder)convertview.gettag(); 
      }     
       
      holder.title.settext((string)mdata.get(position).get("title")); 
      holder.info.settext((string)mdata.get(position).get("info")); 
      holder.viewbtn.settag(position); 
      //给button添加单击事件 添加button之后listview将失去焦点 需要的直接把button的焦点去掉 
      holder.viewbtn.setonclicklistener( mylistener); 
       
      //holder.viewbtn.setonclicklistener(mylistener(position)); 
           
      return convertview; 
    } 
  } 
   
   private class mylistener implements onclicklistener{ 
      int mposition; 
      public mylistener(int inposition){ 
        mposition= inposition; 
      } 
      @override 
      public void onclick(view v) { 
        // todo auto-generated method stub 
        toast.maketext(listviewactivity.this, title[mposition], toast.length_short).show(); 
      } 
       
    } 
 
   
  //提取出来方便点 
  public final class viewholder { 
    public textview title; 
    public textview info; 
    public button viewbtn; 
  } 

3.全部代码

1.listviewactivity.java全部代码：

package ms.listview; 
 
import java.util.arraylist; 
import java.util.hashmap; 
import java.util.list; 
import java.util.map; 
 
import android.app.activity; 
import android.app.alertdialog; 
import android.content.context; 
import android.content.dialoginterface; 
import android.os.bundle; 
import android.view.layoutinflater; 
import android.view.view; 
import android.view.view.onclicklistener; 
import android.view.viewgroup; 
import android.widget.adapterview; 
import android.widget.adapterview.onitemselectedlistener; 
import android.widget.baseadapter; 
import android.widget.button; 
import android.widget.imageview; 
import android.widget.listview; 
import android.widget.textview; 
import android.widget.toast; 
 
public class listviewactivity extends activity { 
  /** called when the activity is first created. */ 
  private list<map<string, object>> mdata; 
  private int flag; 
  public static string title[]=new string[]{"菜名0","菜名1","菜名2","菜名3","菜名4","菜名5","菜名6","菜名7","菜名8","菜名9"}; 
  public static string info[]=new string[]{ "￥：28","￥：28","￥：28","￥：28","￥：28","￥：28","￥：28","￥：28","￥：28","￥：28",}; 
   
 
  @override 
  public void oncreate(bundle savedinstancestate) { 
    super.oncreate(savedinstancestate); 
    setcontentview(r.layout.main); 
    mdata = getdata(); 
    listview listview = (listview) findviewbyid(r.id.listview); 
    myadapter adapter = new myadapter(this); 
    listview.setadapter(adapter); 
     
     
  } 
 
 
 
  //获取动态数组数据 可以由其他地方传来(json等) 
  private list<map<string, object>> getdata() { 
    list<map<string, object>> list = new arraylist<map<string, object>>(); 
for(int i=0;i<title.length;i++){ 
    map<string, object> map = new hashmap<string, object>(); 
    map.put("title", title[i]); 
    map.put("info", info[i]); 
    list.add(map); 
} 
 
    return list; 
  } 
 
  public class myadapter extends baseadapter { 
 
    private layoutinflater minflater; 
 
    public myadapter(context context) { 
      this.minflater = layoutinflater.from(context); 
    } 
 
    @override 
    public int getcount() { 
      // todo auto-generated method stub 
      return mdata.size(); 
    } 
 
    @override 
    public object getitem(int position) { 
      // todo auto-generated method stub 
      return null; 
    } 
 
    @override 
    public long getitemid(int position) { 
      // todo auto-generated method stub 
      return 0; 
    } 
    //****************************************final方法 
//注意原本getview方法中的int position变量是非final的，现在改为final 
    @override 
    public view getview(final int position, view convertview, viewgroup parent) { 
       viewholder holder = null; 
      if (convertview == null) { 
         
        holder=new viewholder();  
         
        //可以理解为从vlist获取view 之后把view返回给listview 
         
        convertview = minflater.inflate(r.layout.vlist, null); 
        holder.title = (textview)convertview.findviewbyid(r.id.title); 
        holder.info = (textview)convertview.findviewbyid(r.id.info); 
        holder.viewbtn = (button)convertview.findviewbyid(r.id.view_btn); 
        convertview.settag(holder);        
      }else {        
        holder = (viewholder)convertview.gettag(); 
      }     
       
      holder.title.settext((string)mdata.get(position).get("title")); 
      holder.info.settext((string)mdata.get(position).get("info")); 
      holder.viewbtn.settag(position); 
      //给button添加单击事件 添加button之后listview将失去焦点 需要的直接把button的焦点去掉 
      holder.viewbtn.setonclicklistener(new view.onclicklistener() { 
         
        @override 
        public void onclick(view v) { 
          showinfo(position);          
        } 
      }); 
       
      //holder.viewbtn.setonclicklistener(mylistener(position)); 
           
      return convertview; 
    } 
  } 
    //****************************************第二种方法，高手一般都用此种方法,具体原因，我还不清楚,有待研究 
   
//   public view getview(int position, view convertview, viewgroup parent) { 
//      viewholder holder = null; 
//      mylistener mylistener=null; 
//     if (convertview == null) { 
//        
//       holder=new viewholder();  
//        
//       //可以理解为从vlist获取view 之后把view返回给listview 
//        mylistener=new mylistener(position); 
//          
//       convertview = minflater.inflate(r.layout.vlist, null); 
//       holder.title = (textview)convertview.findviewbyid(r.id.title); 
//       holder.info = (textview)convertview.findviewbyid(r.id.info); 
//       holder.viewbtn = (button)convertview.findviewbyid(r.id.view_btn); 
//       convertview.settag(holder);        
//     }else {        
//       holder = (viewholder)convertview.gettag(); 
//     }     
//      
//     holder.title.settext((string)mdata.get(position).get("title")); 
//     holder.info.settext((string)mdata.get(position).get("info")); 
//     holder.viewbtn.settag(position); 
//     //给button添加单击事件 添加button之后listview将失去焦点 需要的直接把button的焦点去掉 
//     holder.viewbtn.setonclicklistener( mylistener); 
//      
//     //holder.viewbtn.setonclicklistener(mylistener(position)); 
//          
//     return convertview; 
//   } 
// } 
//  
//  private class mylistener implements onclicklistener{ 
//     int mposition; 
//     public mylistener(int inposition){ 
//       mposition= inposition; 
//     } 
//     @override 
//     public void onclick(view v) { 
//       // todo auto-generated method stub 
//       toast.maketext(listviewactivity.this, title[mposition], toast.length_short).show(); 
//     } 
//      
//   } 
// 
//  
   
   
   
   
   
   
   
   
  //提取出来方便点 
  public final class viewholder { 
    public textview title; 
    public textview info; 
    public button viewbtn; 
  } 
  public void showinfo(int position){ 
     
    imageview img=new imageview(listviewactivity.this); 
    img.setimageresource(r.drawable.b); 
    new alertdialog.builder(this).setview(img) 
    .settitle("详情"+position) 
    .setmessage("菜名："+title[position]+"  价格:"+info[position]) 
    .setpositivebutton("确定", new dialoginterface.onclicklistener() { 
      @override 
      public void onclick(dialoginterface dialog, int which) { 
      } 
    }) 
    .show(); 
  } 
   
   
} 

2.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:orientation="vertical" > 
 
  <listview  
    android:id="@+id/listview" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    android:divider="@drawable/list_line" 
    android:dividerheight="1dip" /> 
 
</linearlayout>

  3.vlist.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:orientation="vertical" > 
 
  <listview  
    android:id="@+id/listview" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    android:divider="@drawable/list_line" 
    android:dividerheight="1dip" /> 
 
</linearlayout> 

4.btn_detail_selecter.xml

<?xml version="1.0" encoding="utf-8"?> 
<selector xmlns:android="http://schemas.android.com/apk/res/android"> 
 
  <item android:drawable="@drawable/btn_detail_normal" android:state_enabled="true" android:state_focused="false" android:state_pressed="false"/> 
  <item android:drawable="@drawable/btn_detail_pressed" android:state_enabled="true" android:state_pressed="true"/> 
  <item android:drawable="@drawable/btn_detail_pressed" android:state_enabled="true" android:state_focused="true"/> 
 
</selector> 

5.item.xml

<?xml version="1.0" encoding="utf-8"?> 
<selector xmlns:android="http://schemas.android.com/apk/res/android"> 
 
  <item android:drawable="@drawable/item_higlight" android:state_focused="true" android:state_pressed="false"/> 
  <item android:drawable="@drawable/item_higlight" android:state_focused="false" android:state_pressed="true"/> 
  <item android:drawable="@drawable/item_higlight" android:state_selected="true"/> 
  <item android:drawable="@drawable/item_higlight" android:state_focused="true"/> 
  <item android:drawable="@drawable/item_higlight"/> 
 
</selector> 

6.colors.xml

<?xml version="1.0" encoding="utf-8"?> 
<resources> 
  <color name="region">#8000ff00</color> 
  <color name="listtitle">#ff23323b</color> 
  <color name="text">#ff848f9b</color> 
  <color name="write">#ffffffff</color> 
</resources> 

7.values.xml

<?xml version="1.0" encoding="utf-8"?> 
<resources> 
 
  <string name="hello">hello world, listviewactivity!</string> 
  <string name="app_name">listview</string> 
 
</resources> 

8.drawables.xml

<?xml version="1.0" encoding="utf-8"?> 
<resources> 
  <item type="drawable" name="bg">#80000000</item> 
  <item type="drawable" name="transparent">#00000000</item> 
  <item type="drawable" name="lightblue">#ffcfe1ed</item> 
  <item type="drawable" name="readmenu_btn_bg_f">#30ffffff</item> 
  <item type="drawable" name="readmenu_btn_bg_p">#50ffffff</item> 
  <item type="drawable" name="blackmask">#30000000</item> 
</resources> 

源码下载：源码下载地址

原文链接：http://blog.csdn.net/qq435757399/article/details/8256453

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