为ListView每个Item上面的按钮添加事件

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）：

[java] view
plain copy

//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：

[java] view
plain copy

//****************************************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：

[java] view
plain copy

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

[html] view
plain copy

<?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

[html] view
plain copy

<?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

[html] view
plain copy

<?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

[html] view
plain copy

<?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

[html] view
plain copy

<?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

[html] view
plain copy

<?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

[html] view
plain copy

<?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>