ContentProvider跨程序访问数据(3)

B程序：通过A程序中继承ContentProvider的类提供的uri访问到A程序的数据

package cn.mrzhu.test24x;

import Android.app.Activity;
import android.content.ContentResolver;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.util.Log;

public class Main extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
       
        //取得ContentResolver对象
        ContentResolver cr = getContentResolver();
        //指定uri并指定操作哪个表
        Uri uri = Uri.parse("content://cn.mrzhu.test24/test1");
        //执行query方法返回一个结果集
        Cursor cs = cr.query(uri, null, null, null, null);
        //遍历结果集，取出数据
        while(cs.moveToNext()){
         Log.i("System.out", "_id" + cs.getInt(0) + "name" + cs.getString(1) + "age" + cs.getInt(2));
        }
    }
}