android布局之listview

手机中的UI界面最常见的就是列表显示内容了，最基本的电话簿就是其布局，像这种地上两层的布局内容（底层listview上层是内容如imageview、textview等等）要用到一个特殊的类BaseAdapter来实现的。

先看一下具体效果

布局文件如下：

1、activity_main.xml很简单:

<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="wrap_content"></ListView></RelativeLayout>

2、listviewcontent.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="4dip"    android:paddingLeft="12dip" >    <ImageView        android:id="@+id/imagerview"        android:layout_width="wrap_content"        android:layout_height="wrap_content" />    <TextView        android:id="@+id/textview1"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_toRightOf="@id/imagerview"        android:textSize="30dip" />    <TextView        android:id="@+id/textview2"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_below="@id/textview1"        android:layout_toRightOf="@id/imagerview" /></RelativeLayout>

代码实现部分：

package com.icedcap.listviewtest;import android.app.Activity;import android.content.Context;import android.os.Bundle;import android.view.LayoutInflater;import android.view.Menu;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.ImageView;import android.widget.ListView;import android.widget.TextView;public class MainActivity extends Activity {private ListView lv;private ImageView iv;private TextView tv1, tv2;String[] titles = { "标题1", "标题2", "标题3", "标题4" };String[] texts = { "文本内容A", "文本内容B", "文本内容C", "文本内容D" };int[] resIds={R.drawable.ic_launcher,R.drawable.ic_launcher,R.drawable.ic_launcher,R.drawable.ic_launcher};@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);initView();ListViewAdapter adapter = new ListViewAdapter(titles, texts, resIds);lv.setAdapter(adapter);}private void initView() {lv = (ListView) findViewById(R.id.listview);iv = (ImageView) findViewById(R.id.imagerview);tv1 = (TextView) findViewById(R.id.textview1);tv2 = (TextView) findViewById(R.id.textview2);}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.main, menu);return true;}public class ListViewAdapter extends BaseAdapter {          View[] itemViews;            public ListViewAdapter(String[] itemTitles, String[] itemTexts,                  int[] itemImageRes) {              itemViews = new View[itemTitles.length];                for (int i = 0; i < itemViews.length; i++) {                  itemViews[i] = makeItemView(itemTitles[i], itemTexts[i], itemImageRes[i]);              }          }            public int getCount() {              return itemViews.length;          }            public View getItem(int position) {              return itemViews[position];          }            public long getItemId(int position) {              return position;          }            private View makeItemView(String strTitle, String strText, int resId) {              LayoutInflater inflater = (LayoutInflater) MainActivity.this                      .getSystemService(Context.LAYOUT_INFLATER_SERVICE);                // 使用View的对象itemView与R.layout.item关联              View itemView = inflater.inflate(R.layout.listviewcontent, null);                // 通过findViewById()方法实例R.layout.item内各组件              TextView title = (TextView) itemView.findViewById(R.id.textview1);              title.setText(strTitle);              TextView text = (TextView) itemView.findViewById(R.id.textview2);              text.setText(strText);              ImageView image = (ImageView) itemView.findViewById(R.id.imagerview);              image.setImageResource(resId);                            return itemView;          }            public View getView(int position, View convertView, ViewGroup parent) {              if (convertView == null)                  return itemViews[position];              return convertView;          }      }  }

源码下载地址：http://download.csdn.net/detail/icedcap/6982525