Android ContentResolver 使用例子，读取联系人

import android.app.ListActivity;
import android.database.Cursor;
import android.os.Bundle;
import android.provider.Contacts.Phones;
import android.widget.ListAdapter;
import android.widget.SimpleCursorAdapter;

public class ActivityMain extends ListActivity {
   
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        Cursor c = getContentResolver().query(Phones.CONTENT_URI, null, null, null, null); //获得一个ContentResolver并读取联系人列表
        startManagingCursor(c);  //托管结果
        ListAdapter adapter = new SimpleCursorAdapter(this,
                android.R.layout.simple_list_item_2, c,
                        new String[] { Phones.NAME, Phones.NUMBER },
                        new int[] { android.R.id.text1, android.R.id.text2 });//生成适配器。
        setListAdapter(adapter); //绑定List
    }
   
}