Android实战简易教程-第十五枪（实现ListView中Button点击事件监听） _android实战

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1.main.xml

< 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>

2.listitem.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="wrap_content" android:descendantFocusability="blocksDescendants" android:orientation="horizontal" > < 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:layout_alignParentRight="true" android:text="Button" android:textColor="#ff0000" android:textSize="20sp" /> < /RelativeLayout>

3.ContentAdapter【Android实战简易教程-第十五枪（实现ListView中Button点击事件监听）】

package com.example.listviewchangetext; 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; 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,//构造方法 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.listitem, 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 * @author Ivan Xu * 2014-11-26 */ 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); } }

4.MainActivity.java

package com.example.listviewchangetext; 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.example.listviewchangetext.ContentAdapter.MyClickListener; public class MainActivity extends Activity implements OnItemClickListener {// 模拟listview中载入的数据 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button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button被点击了！
，位置是--> " + position + ",内容是--> " + contentList.get(position), Toast.LENGTH_SHORT) .show(); } }; }

5.执行实比例如以下：