Android中的ListView实现图片文字和按钮

来源：互联网发布：环信 java 服务端编辑：程序博客网时间：2024/05/22 06:50
实现效果图：
布局文件：
vlist2.xml
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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="horizontal"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
 
 
    <ImageView android:id="@+id/img"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="5px"/>
 
    <LinearLayout android:orientation="vertical"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content">
 
        <TextView android:id="@+id/title"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textColor="#FFFFFFFF"
            android:textSize="22px" />
        <TextView android:id="@+id/info"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textColor="#FFFFFFFF"
            android:textSize="13px" />
 
    </LinearLayout>
 
 
    <Button android:id="@+id/view_btn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/s_view_btn"
        android:layout_gravity="bottom|right" />
</LinearLayout>
程序代码：
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/**
 * @author allin
 *
 */
public class MyListView4extends ListActivity {
 
 
    private List<Map<String, Object>> mData;
     
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        mData = getData();
        MyAdapter adapter = new MyAdapter(this);
        setListAdapter(adapter);
    }
 
    private List<Map<String, Object>> getData() {
        List<Map<String, Object>> list = new ArrayList<Map<String, Object>>();
 
        Map<String, Object> map = new HashMap<String, Object>();
        map.put("title","G1");
        map.put("info","google 1");
        map.put("img", R.drawable.i1);
        list.add(map);
 
        map = new HashMap<String, Object>();
        map.put("title","G2");
        map.put("info","google 2");
        map.put("img", R.drawable.i2);
        list.add(map);
 
        map = new HashMap<String, Object>();
        map.put("title","G3");
        map.put("info","google 3");
        map.put("img", R.drawable.i3);
        list.add(map);
         
        return list;
    }
     
    // ListView 中某项被选中后的逻辑
    @Override
    protected void onListItemClick(ListView l, View v, int position,long id) {
         
        Log.v("MyListView4-click", (String)mData.get(position).get("title"));
    }
     
    /**
     * listview中点击按键弹出对话框
     */
    public void showInfo(){
        new AlertDialog.Builder(this)
        .setTitle("我的listview")
        .setMessage("介绍...")
        .setPositiveButton("确定",new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
            }
        })
        .show();
         
    }
     
     
     
    public final class ViewHolder{
        public ImageView img;
        public TextView title;
        public TextView info;
        public Button viewBtn;
    }
     
     
    public class MyAdapterextends BaseAdapter{
 
        private LayoutInflater mInflater;
         
         
        public MyAdapter(Context context){
            this.mInflater = LayoutInflater.from(context);
        }
        @Override
        public int getCount() {
            // TODO Auto-generated method stub
            return mData.size();
        }
 
        @Override
        public Object getItem(int arg0) {
            // TODO Auto-generated method stub
            return null;
        }
 
        @Override
        public long getItemId(int arg0) {
            // TODO Auto-generated method stub
            return 0;
        }
 
        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
             
            ViewHolder holder = null;
            if (convertView == null) {
                 
                holder=new ViewHolder(); 
                 
                convertView = mInflater.inflate(R.layout.vlist2, null);
                holder.img = (ImageView)convertView.findViewById(R.id.img);
                holder.title = (TextView)convertView.findViewById(R.id.title);
                holder.info = (TextView)convertView.findViewById(R.id.info);
                holder.viewBtn = (Button)convertView.findViewById(R.id.view_btn);
                convertView.setTag(holder);
                 
            }else {
                 
                holder = (ViewHolder)convertView.getTag();
            }
             
             
            holder.img.setBackgroundResource((Integer)mData.get(position).get("img"));
            holder.title.setText((String)mData.get(position).get("title"));
            holder.info.setText((String)mData.get(position).get("info"));
             
            holder.viewBtn.setOnClickListener(new View.OnClickListener() {
                 
                @Override
                public void onClick(View v) {
                    showInfo();                
                }
            });
             
             
            return convertView;
        }
         
    }
     
     
     
     
}