Android中listview条目中按钮点击事件的实现

大家都知道Android中listview是一个常用的控件，也是一个比较复杂的控件，一般实现listview的条目点击事件就是给listview实现setOnItemClickListener的方法就行，但是当我们遇到listview中的有按钮的时候想实现
按钮的点击事件这样做是不行的，比如QQ空间的说说评论和点赞其实就是相当于两个按钮。一般实现这两个按钮的点击事件归结为一种思想---接口回调。具体实现的话有两种方法，一中是通过实现接口方法，一中是通过实
现抽象方法。当然接口和抽象类在java中其实差不多的东西，虽然两者有很大不同，但是他们有着一样的功能。

两种方法都有实现，其中还应当注意一般每个控件都有一个setTag()的方法，这个方法在这中问题上起着至关重要的作用。一般可以用来记录按钮的位置之类的。

抽象类的实现：

package com.example.listviewbuttonclick.adapter;

import android.view.View;
import android.view.View.OnClickListener;

public abstract class IClick implements OnClickListener {
@Override
public void onClick(View v) {
listViewItemClick((Integer) v.getTag(), v);
}

public abstract void listViewItemClick(int position, View v);

}

适配器

package com.example.listviewbuttonclick.adapter;

import java.util.List;

import com.example.listviewbuttonclick.R;

import android.content.Context;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.TextView;

public class ContentAdapter extends BaseAdapter {

private static final String TAG = "ContentAdapter";
private List<String> mContentList;
private LayoutInflater mInflater;
private IClick mListener;

public ContentAdapter(Context context, List<String> contentList,
IClick listener) {
mContentList = contentList;
mInflater = LayoutInflater.from(context);
mListener = listener;
}

@Override
public int getCount() {
Log.i(TAG, "getCount");
return mContentList.size();
}

@Override
public Object getItem(int position) {
Log.i(TAG, "getItem");
return mContentList.get(position);
}

@Override
public long getItemId(int position) {
Log.i(TAG, "getItemId");
return position;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
Log.i(TAG, "getView");
ViewHolder holder = null;
if (convertView == null) {
convertView = mInflater.inflate(R.layout.list_item, null);
holder = new ViewHolder();
holder.textView = (TextView) convertView
.findViewById(R.id.textView1);
holder.button = (Button) convertView.findViewById(R.id.button1);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.textView.setText(mContentList.get(position));
holder.button.setOnClickListener(mListener);
holder.button.setTag(position);
return convertView;
}

public class ViewHolder {
public TextView textView;
public Button button;
}

}

接口实现

package com.example.listviewbuttonclick.adapter.inter;

import android.view.View;

public interface InterClick {
public void commentClick(View v);

public void shareClick(View v);

}

适配器

package com.example.listviewbuttonclick.adapter;

import java.util.List;

import com.example.listviewbuttonclick.R;
import com.example.listviewbuttonclick.adapter.inter.InterClick;

import android.content.Context;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.TextView;

public class ContentAdapter extends BaseAdapter implements OnClickListener {

private static final String TAG = "ContentAdapter";
private List<String> mContentList;
private LayoutInflater mInflater;
private InterClick mCallback;

public ContentAdapter(Context context, List<String> contentList,
InterClick callback) {
mContentList = contentList;
mInflater = LayoutInflater.from(context);
mCallback = callback;
}

@Override
public int getCount() {
Log.i(TAG, "getCount");
return mContentList.size();
}

@Override
public Object getItem(int position) {
Log.i(TAG, "getItem");
return mContentList.get(position);
}

@Override
public long getItemId(int position) {
Log.i(TAG, "getItemId");
return position;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
Log.i(TAG, "getView");
ViewHolder holder = null;
if (convertView == null) {
convertView = mInflater.inflate(R.layout.list_item, null);
holder = new ViewHolder();
holder.textView = (TextView) convertView
.findViewById(R.id.textView1);
holder.button1 = (Button) convertView.findViewById(R.id.button1);
holder.button2 = (Button) convertView.findViewById(R.id.button2);

convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.textView.setText(mContentList.get(position));
holder.button1.setOnClickListener(this);
holder.button2.setOnClickListener(this);

// 设置位置，获取点击的条目按钮
holder.button1.setTag(position);
holder.button2.setTag(position);
return convertView;
}

public class ViewHolder {
public TextView textView;
public Button button1;
public Button button2;

}

// 响应按钮点击事件,调用子定义接口，并传入View
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.button1:
mCallback.commentClick(v);
break;
case R.id.button2:
mCallback.shareClick(v);
break;
default:
break;
}
}
}

这两种分别是不同的方法实现的按钮点击事件，具体实现都在源码中

源码下载