Android小记：ListView中的按钮点击响应事件

1.使用接口回调：

Adapter类:

package com.ivan.adapter;

import java.util.List;
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;

import com.ivan.listvieweventcallback.R;

public class ContentAdapter extends BaseAdapter implements OnClickListener {

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

public ContentAdapter(Context context, List<String> contentList,
MyCallback 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.button = (Button) convertView.findViewById(R.id.button1);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.textView.setText(mContentList.get(position));
holder.button.setOnClickListener(this);
holder.button.setTag(position);
return convertView;
}

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

// 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) {
mCallback.click(v);
}
}

自定义接口:

/**
* 自定义接口，用于回调按钮点击事件到Activity
*/
public interface MyCallback {
public void click(View v);
}

Activity类:

package com.ivan.listvieweventdemo;

import java.util.ArrayList;
import java.util.List;
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;
import android.widget.Toast;
import com.ivan.adapter.ContentAdapter;
import com.ivan.adapter.ContentAdapter.Callback;
import com.ivan.listvieweventcallback.R;

//MainActivity需要实现自定义接口
public class MainActivity extends Activity implements OnItemClickListener,
MyCallback {

// 模拟listview中加载的数据
private static final String[] CONTENTS = { "北京", "上海", "广州", "深圳", "苏州",
"南京", "武汉", "长沙", "杭州" };
private List<String> contentList;
private ListView mListView;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

init();
}

private void init() {
mListView = (ListView) findViewById(R.id.listview);
contentList = new ArrayList<String>();
for (int i = 0; i < CONTENTS.length; i++) {
contentList.add(CONTENTS[i]);
}
//
mListView.setAdapter(new ContentAdapter(this, contentList, this));
mListView.setOnItemClickListener(this);
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
return true;
}

/**
* 响应ListView中item的点击事件
*/
@Override
public void onItemClick(AdapterView<?> arg0, View v, int position, long id) {
Toast.makeText(this, "listview的item被点击了！，点击的位置是-->" + position,
Toast.LENGTH_SHORT).show();
}

/**
* 接口方法，响应ListView按钮点击事件
*/
@Override
public void click(View v) {
Toast.makeText(
MainActivity.this,
"listview的内部的按钮被点击了！，位置是-->" + (Integer) v.getTag() + ",内容是-->"
+ contentList.get((Integer) v.getTag()),
Toast.LENGTH_SHORT).show();
}
}

2.使用抽象类回调:

Adapter类：

package com.ivan.adapter;

import java.util.List;
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;
import com.ivan.listvieweventabstract.R;

public class ContentAdapter extends BaseAdapter {

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

public ContentAdapter(Context context, List<String> contentList,
MyClickListener 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;
}

/**
* 用于回调的抽象类
*/
public static abstract class MyClickListener implements OnClickListener {
/**
* 基类的onClick方法
*/
@Override
public void onClick(View v) {
myOnClick((Integer) v.getTag(), v);
}
public abstract void myOnClick(int position, View v);
}
}

Activity类:

package com.ivan.listvieweventdemo;
import java.util.ArrayList;
import java.util.List;
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;
import android.widget.Toast;
import com.ivan.adapter.ContentAdapter;
import com.ivan.adapter.ContentAdapter.MyClickListener;
import com.ivan.listvieweventabstract.R;

public class MainActivity extends Activity implements OnItemClickListener {

// 模拟listview中加载的数据
private static final String[] CONTENTS = { "北京", "上海", "广州", "深圳", "苏州",
"南京", "武汉", "长沙", "杭州" };
private List<String> contentList;
private ListView mListView;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

init();
}

private void init() {
mListView = (ListView) findViewById(R.id.listview);
contentList = new ArrayList<String>();
for (int i = 0; i < CONTENTS.length; i++) {
contentList.add(CONTENTS[i]);
}
//实例化ContentAdapter类，并传入实现类
mListView.setAdapter(new ContentAdapter(this, contentList, mListener));

mListView.setOnItemClickListener(this);
}

@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
return true;
}

//响应item点击事件
@Override
public void onItemClick(AdapterView<?> arg0, View v, int position, long id) {
Toast.makeText(this, "listview的item被点击了！，点击的位置是-->" + position,
Toast.LENGTH_SHORT).show();
}

/**
* 实现类，响应按钮点击事件
*/
private MyClickListener mListener = new MyClickListener() {
@Override
public void myOnClick(int position, View v) {
Toast.makeText(
MainActivity.this,
"listview的内部的按钮被点击了！，位置是-->" + position + ",内容是-->"
+ contentList.get(position), Toast.LENGTH_SHORT)
.show();
}
};
}

布局文件:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >

<ListView
android:id="@+id/listview"
android:layout_width="match_parent"
android:layout_height="match_parent" >
</ListView>
</RelativeLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:descendantFocusability="blocksDescendants"
android:orientation="vertical" >

<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="content"
android:textColor="#ff0000"
android:textSize="20sp" />

<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:focusable="false"
android:text="Button"
android:textColor="#ff0000"
android:textSize="20sp" />
</LinearLayout>

Android listview适配器里区分不同按钮的点击事件

1.适配器 ListItemClickAdapter

public class ListItemClickAdapter extends BaseAdapter {
private Context contxet;
private ArrayList<string> list;
private ListItemClickHelp callback;
private LayoutInflater mInflater;

public ListItemClickAdapter(Context contxet, ArrayList<string> list,
ListItemClickHelp callback) {
this.contxet = contxet;
this.list = list;
this.callback = callback;
}

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

@Override
public Object getItem(int position) {
return null;
}

@Override
public long getItemId(int position) {
return 0;
}

@Override
public View getView(int position, View convertView, final ViewGroup parent) {
mInflater = (LayoutInflater) contxet
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
ViewHolder holder;
if (convertView == null) {
convertView = mInflater.inflate(R.layout.block_list_item, null);
holder = new ViewHolder();
holder.mAd_tv_show = (TextView) convertView
.findViewById(R.id.ad_tv_show);
holder.mAd_btn_one = (Button) convertView
.findViewById(R.id.ad_btn_one);
holder.mAd_btn_two = (Button) convertView
.findViewById(R.id.ad_btn_two);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}

holder.mAd_tv_show.setText(list.get(position));

final View view = convertView;
final int p = position;
final int one = holder.mAd_btn_one.getId();
holder.mAd_btn_one.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
callback.onClick(view, parent, p, one);
}
});

final int two = holder.mAd_btn_two.getId();
holder.mAd_btn_two.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
callback.onClick(view, parent, p, two);
}
});

return convertView;
}

public static class ViewHolder {
TextView mAd_tv_show;
Button mAd_btn_one;
Button mAd_btn_two;
}

2.接口 ListItemClickHelp

/**
* listview点击事件接口
*/
publicinterfaceListItemClickHelp {
voidonClick(View item, View widget, intposition,intwhich);
}

3.界面 MainActivity

publicclassMainActivityextendsActivityimplementsListItemClickHelp {
privateTextView mtv_show;
privateListView mlv_show;
privateArrayList<string> mdata = newArrayList<string>();
privateListItemClickAdapter madapter;

@Override
protectedvoidonCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

initLayout();
}

privatevoidinitLayout() {
mdata.add("One");
mdata.add("Two");
mdata.add("Three");
mdata.add("Four");
mdata.add("Five");
mdata.add("菠萝");
mdata.add("苹果");
mdata.add("葡萄");
mdata.add("哈密瓜");
mdata.add("香蕉");

mtv_show = (TextView) this.findViewById(R.id.tv_show);
mlv_show = (ListView) this.findViewById(R.id.lv_show);

madapter = newListItemClickAdapter(this, mdata, this);
mlv_show.setAdapter(madapter);

mlv_show.setOnItemClickListener(newOnItemClickListener() {
@Override
publicvoidonItemClick(AdapterView<!--?--> adapter, View view,
intposition,longarg3) {
mtv_show.setText(mdata.get(position));
}
});
}

@Override
publicvoidonClick(View item, View widget, intposition,intwhich) {
switch(which) {
caseR.id.ad_btn_one:
mtv_show.setText(mdata.get(position) + "Btn one");
break;
caseR.id.ad_btn_two:
mtv_show.setText(mdata.get(position) + "Btn two");
break;
default:
break;
}
}
}