Android: 开发短信程序列表界面(QuickContactBadge/ListView混用)

android默认短信程序主界面主要是一个ListView，每个Item上有一个QuickContactBadge（这里提到过]）。这个可以通过定制ListView使用的adapter来实现。

查了些ListView自己写adapter的资料，发现问题很多。主要集中于item带有事件响应，或者状态保存，例如Button、CheckBox，之类的控件时，将很难协调。

事实上，虽然QuickContactBadge也带有事件响应，但是集成到ListView的item里，相对而言简单很多。

ListView的Item配置：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="fill_parent"
  android:layout_height="wrap_content">
  
    <android.widget.QuickContactBadge
        android:id="@+id/avatar"
        android:layout_centerVertical="true"
        android:src="@drawable/icon"
        style="?android:attr/quickContactBadgeStyleWindowSmall" />  
        
      <TextView android:id="@+id/subject"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:paddingLeft="10dip"
        android:singleLine="true"
        android:layout_toRightOf="@id/avatar"
        android:ellipsize="end" />
</RelativeLayout>

Adapter:

package com.kl.test;

import java.util.List;
import java.util.Map;
import android.content.Context;
import android.provider.ContactsContract.QuickContact;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.QuickContactBadge;
import android.widget.TextView;


public class QuickContactAdapter extends BaseAdapter {
	public static final int RES_TEXT_ID = 1;
	public static final int RES_BADGE_ID = 0;
    private LayoutInflater mInflater;	
    private List<? extends Map<String, ?>> mData;
    private String[] mFrom;
    private int[] mTo;
    private int mResource;
   
    public final class ViewHolder{
        public QuickContactBadge badge;
        public TextView text;
    }
     
    public QuickContactAdapter(Context context, List<? extends Map<String, ?>> list, int resource,
    		String[] from, int[] to) {
    	mInflater = LayoutInflater.from(context);
    	mFrom = from;
    	mData = list;
    	mTo = to;
    	mResource = resource;
    }
    
    @Override
    public int getCount() {
        return mData.size();
    }

    @Override
    public Object getItem(int arg0) {
        return null;
    }

    @Override
    public long getItemId(int arg0) {
        return 0;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder holder = null;
        if (convertView == null) {
            holder = new ViewHolder(); 
            convertView = mInflater.inflate(mResource, null);
            holder.text = (TextView)convertView.findViewById(mTo[RES_TEXT_ID]);
            holder.badge = (QuickContactBadge)convertView.findViewById(mTo[RES_BADGE_ID]);
            convertView.setTag(holder);
        }
        else {
            holder = (ViewHolder)convertView.getTag();
        }
         
        holder.text.setText((String)mData.get(position).get(mFrom[RES_TEXT_ID]));
        holder.badge.setMode(QuickContact.MODE_SMALL);
        holder.badge.assignContactFromPhone((String)mData.get(position).get(mFrom[RES_BADGE_ID]), true);  
         
        return convertView;
    }
}

其实，这个adapter的主要目的，是为对应的QuickContactBadge关联Uri。当然，我对ListView还不甚精通，这里就不细说了。anyway, it worked.

package com.kl.test;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;

public class QuickContactList extends Activity {
	List<Map<String, String>> mData = new ArrayList<Map<String, String>>();
	
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        fillListView();
    }
    
    private void fillListView() {
    	ListView view = (ListView) findViewById(R.id.list);
    	
    	List<Map<String, String>> data = mData;
    	for( int i = 0; i < 10; ++i ) {
    		Map<String, String> d1 = new HashMap<String, String>();
    		d1.put("text", String.format("Item %d", i));
    		d1.put("phone", String.format( "12%d", i));
    		data.add(d1);
    	}
    	
    	QuickContactAdapter adapter = new QuickContactAdapter(this, data, R.layout.list_item,
    			new String[] { "phone", "text" },
    			new int[] { R.id.avatar, R.id.subject } );
    	
    	view.setAdapter(adapter);
    	//view.setAdapter(new MyAdapter(this));
    	view.setOnItemClickListener(new OnItemClickListener() {  
    		@Override  
    		public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {  
    			setTitle("点击第"+arg2+"个项目");  
    		}  
    	});  
    }
}

上面是测试例子，实际运行效果QuickContactBadge不影响ListView的点击。