ListView（自定义适配器）

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实现图片文字混合列表

 1 package com.example.work; 2  3 import java.util.ArrayList; 4 import java.util.HashMap; 5 import java.util.List; 6  7  8 import android.R.integer; 9 import android.os.Bundle;10 import android.app.Activity;11 import android.view.Menu;12 import android.view.View;13 import android.widget.AdapterView;14 import android.widget.Toast;15 import android.widget.AdapterView.OnItemClickListener;16 import android.widget.ListView;17 18 public class MainActivity extends Activity {19     private ListView listview;20     @Override21     protected void onCreate(Bundle savedInstanceState) {22         super.onCreate(savedInstanceState);23         setContentView(R.layout.activity_main);24         listview = (ListView) findViewById(R.id.id_list);25         //这里设置三个列表项，每个列表项对应一个图片和对应的文字26         //图片数组27         int image[] = new int[]{R.drawable.tou1,R.drawable.tou3,R.drawable.he};28         //文字数组29         String text[] = {"连连看","斗地主","爱消除"};30         List<HashMap<String,Object>> list = new ArrayList<HashMap<String,Object>>();31         //将一个图片和一个文字放入一个map集合中，并将map集合依次加入到list集合中32         for(int i=0;i<image.length;i++)33         {34             HashMap<String, Object> map = new HashMap<String, Object>();35             map.put("text", text[i]);36             map.put("image", image[i]);37             list.add(map);38         }39         40         //MyAdapter是自定义的适配器41         MyAdapter myadapter = new MyAdapter(this, R.layout.layout_item, list);42         listview.setAdapter(myadapter);43         44         //点击列表项的响应事件45         listview.setOnItemClickListener(new OnItemClickListener() {46 47             @Override48             public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,49                     long arg3) {50                 // TODO Auto-generated method stub51                 Toast.makeText(MainActivity.this, "点击了第"+(arg2+1)+"项，内容："+arg0.getItemAtPosition(arg2).toString(), 1).show();52             }53         });54     }55 }

自定义适配器

 1 package com.example.work; 2  3 import java.util.ArrayList; 4 import java.util.HashMap; 5 import java.util.List; 6 import java.util.Map; 7  8  9 import android.content.Context;10 import android.view.LayoutInflater;11 import android.view.View;12 import android.view.ViewGroup;13 import android.widget.BaseAdapter;14 import android.widget.ImageView;15 import android.widget.TextView;16 17 public class MyAdapter extends BaseAdapter{18     19     private Context context;//上下文20     private int resourceId;//列表项的布局文件21     private List<HashMap<String, Object>> list; //数据源22     public MyAdapter(Context context,int resourceId,List<HashMap<String,Object>> list)23     {24         this.context = context;25         this.resourceId = resourceId;26         this.list = list;27     }28     //得到列表项的个数，即数据源的数据条数29     @Override30     public int getCount() {31         int count = 0;32         if(list!=null)33         return list.size();34         return count;35     }36 37     //得到对应position位置列表项的内容，即数据源list对应位置的数据38     @Override39     public Object getItem(int position) {40         41         return list.get(position);42     }43     44     //得到列表项的id45     @Override46     public long getItemId(int position) {47         // TODO Auto-generated method stub48         return position;49     }50 51     @Override52     public View getView(int position, View convertView, ViewGroup parent) {53         // TODO Auto-generated method stub54         //提高对对象的复用55         View view = null;56         if(convertView!=null)57         {58             view = convertView;59         }60         else 61         {62             view = LayoutInflater.from(context).inflate(resourceId, parent,false);63         }64         65         ViewHolder holder = (ViewHolder) view.getTag();66         if(holder==null)67         {68             holder = new ViewHolder();69             holder.textView = (TextView) view.findViewById(R.id.id_textview);70             holder.image = (ImageView) view.findViewById(R.id.id_image);71             view.setTag(holder);72         }73         //给相应位置的图片和文字赋内容74         holder.textView.setText(list.get(position).get("text").toString());75         holder.image.setImageResource((Integer) list.get(position).get("image"));76         77         //返回视图，这里的视图是一整个列表项的视图78         return view;    81     }82     83     class ViewHolder84     {85         TextView textView;86         ImageView image;87     }90 }

主Activity布局文件

 1 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 2     xmlns:tools="http://schemas.android.com/tools" 3     android:layout_width="match_parent" 4     android:layout_height="match_parent" 5    6     tools:context=".MainActivity" > 7  8    <ListView  9        android:layout_width="match_parent"10        android:layout_height="match_parent"11        android:id="@+id/id_list"12        ></ListView>13 </LinearLayout>

列表项布局

 1 <?xml version="1.0" encoding="utf-8"?> 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 3     android:layout_width="match_parent" 4     android:layout_height="match_parent" 5     android:orientation="horizontal" > 6      7      8     <ImageView android:layout_width="50dp" 9         android:layout_height="50dp"10         android:id="@+id/id_image"11         />12     <TextView 13         android:layout_width="match_parent"14         android:layout_height="wrap_content"15         android:id="@+id/id_textview"16         android:gravity="center_vertical"17         android:textStyle="bold|italic"18         />19 </LinearLayout>

效果图：

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