Android下查询系统源码看短信的显示
2013-10-28 03:13
423 查看
查询系统源码看短信的显示如何写:
在providers.telephony:SmsProvider:
1.确定怎么查数据库中的表:
Uri = content://sms/conversations
2.确定查询语句: select 映射条目 from 表 where 查询条件
表:
sms, (SELECT thread_id AS group_thread_id, MAX(date)AS group_date,COUNT(*) AS msg_count FROM sms GROUP BY thread_id) AS groups
查询条件:
sms.thread_id = groups.group_thread_id AND sms.date = groups.group_date
映射条目:
sms.body AS snippet
sms.thread_id AS thread_id
groups.msg_count AS msg_count
所以查询语句:
select
sms.body AS snippet,sms.thread_id AS thread_id,groups.msg_count AS msg_count
from
sms, (SELECT thread_id AS group_thread_id, MAX(date)AS group_date,COUNT(*) AS msg_count FROM sms GROUP BY thread_id) AS groups
where
sms.thread_id = groups.group_thread_id AND sms.date = groups.group_date
查询结果:
还需要号码,日期/时间
但看系统源码的映射列都已经写死,用户若添加自己需要的列会将系统的列覆盖:
看系统如何解决:找query:
这里的query是用户来调用的,所以projectionIn是用户传进来的,
继续找:同一个方法内,看query怎么处理projictionIn的,
点击查看如何处理用户传进来的projectionIn的,
再次点击发现进不去,为本类的方法:查找:
第一个在判断里面,略去不看,看第二个:将projection等各种参数建立成为一个sql语句,点击,发现进不去,,buildQuery为一个本类方法:查找其实现:
点击发现是一个本类方法,查找其实现:
分析源码:
将需要添加的列写好,测试正确性:
select sms.body AS snippet,sms.thread_id AS thread_id,groups.msg_count AS msg_count,sms.address as address,sms.date as date
from sms, (SELECT thread_id AS group_thread_id, MAX(date)AS group_date,COUNT(*) AS msg_count FROM sms GROUP BY thread_id) AS groups
where sms.thread_id = groups.group_thread_id AND sms.date = groups.group_date
详细代码:
1.
2.
运行结果:
在providers.telephony:SmsProvider:
1.确定怎么查数据库中的表:
Uri = content://sms/conversations
2.确定查询语句: select 映射条目 from 表 where 查询条件
表:
sms, (SELECT thread_id AS group_thread_id, MAX(date)AS group_date,COUNT(*) AS msg_count FROM sms GROUP BY thread_id) AS groups
查询条件:
sms.thread_id = groups.group_thread_id AND sms.date = groups.group_date
映射条目:
sms.body AS snippet
sms.thread_id AS thread_id
groups.msg_count AS msg_count
所以查询语句:
select
sms.body AS snippet,sms.thread_id AS thread_id,groups.msg_count AS msg_count
from
sms, (SELECT thread_id AS group_thread_id, MAX(date)AS group_date,COUNT(*) AS msg_count FROM sms GROUP BY thread_id) AS groups
where
sms.thread_id = groups.group_thread_id AND sms.date = groups.group_date
查询结果:
还需要号码,日期/时间
但看系统源码的映射列都已经写死,用户若添加自己需要的列会将系统的列覆盖:
看系统如何解决:找query:
这里的query是用户来调用的,所以projectionIn是用户传进来的,
继续找:同一个方法内,看query怎么处理projictionIn的,
点击查看如何处理用户传进来的projectionIn的,
再次点击发现进不去,为本类的方法:查找:
第一个在判断里面,略去不看,看第二个:将projection等各种参数建立成为一个sql语句,点击,发现进不去,,buildQuery为一个本类方法:查找其实现:
点击发现是一个本类方法,查找其实现:
分析源码:
将需要添加的列写好,测试正确性:
select sms.body AS snippet,sms.thread_id AS thread_id,groups.msg_count AS msg_count,sms.address as address,sms.date as date
from sms, (SELECT thread_id AS group_thread_id, MAX(date)AS group_date,COUNT(*) AS msg_count FROM sms GROUP BY thread_id) AS groups
where sms.thread_id = groups.group_thread_id AND sms.date = groups.group_date
详细代码:
1.
package com.itcode.SMSManager.utils; import android.net.Uri; public class SmsUtils { public static final Uri SMSURL = Uri.parse("content://sms/conversations"); }
2.
package com.itcode.SMSManager; import android.app.Activity; import android.content.AsyncQueryHandler; import android.content.ContentResolver; import android.database.Cursor; import android.os.Bundle; import android.util.Log; import com.itcode.SMSManager.utils.SmsUtils; public class ConversationActivity extends Activity { private ConversationAsyncQueryHandler asyncQuery; private static final String[] CONVERSATIONSMSPROJECTION = { "sms.body AS snippet", "sms.thread_id AS thread_id", "groups.msg_count AS msg_count", "sms.address as address", "sms.date as date" }; public static final String TAG = "ConversationActivity"; @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); setContentView(R.layout.activity_conversion); asyncQuery = new ConversationAsyncQueryHandler(getContentResolver()); asyncQuery.startQuery(0, null, SmsUtils.SMSURL, CONVERSATIONSMSPROJECTION, null, null, "date DESC"); } private class ConversationAsyncQueryHandler extends AsyncQueryHandler { private String value; private String columnName; public ConversationAsyncQueryHandler(ContentResolver cr) { super(cr); // TODO Auto-generated constructor stub } /** * 当异步查询结束后调用的方法 * Called when an asynchronous query is completed. * token the token to identify the query, passed in from startQuery. * cookie 添加额外的数据的 the cookie object passed in from startQuery. * cursor 查询出来的结果集The cursor holding the results from the query. */ @Override protected void onQueryComplete(int token, Object cookie, Cursor cursor) { // TODO Auto-generated method stub super.onQueryComplete(token, cookie, cursor); if(cursor != null && cursor.getCount()>0){ int columnCount = cursor.getColumnCount(); while(cursor.moveToNext()){ for(int i=0;i<columnCount;i++){ columnName = cursor.getColumnName(i); value = cursor.getString(i); Log.i(TAG,"当前是第"+cursor.getPosition() + "行:" + columnName + ":" + value); } } } } } }
运行结果:
相关文章推荐
- Android下查询系统源码看短信的显示
- 毕业设计_Android短信查询及加密系统_会话加密
- 毕业设计_Android短信查询及加密系统_短信查询
- Android系统源码阅读(18):Android 应用的显示
- android 系统短信数据库的查询与删除
- Android 系统自带的发送短信的界面源码
- android应用与服务的通信之学生查询系统案例源码
- android系统通讯录源码--显示联系人添加长按事件监听
- Android4.2.2 动态显示隐藏屏幕底部的导航栏(对系统源码进行修改)
- Android4.2.2 动态显示隐藏屏幕底部的导航栏(对系统源码进行修改)
- Android 显示系统
- 解决Android拍照保存在系统相册不显示的问题
- Android Tasker应用之自动查询并显示话费流量套餐信息
- Android 观察系统中短信内容的变化(内容观察者)
- Android: 显示系统模块加载以及调用流程 HWComposer::loadFbHalModule() -> framebuffer_open()
- Android系统分析之JobScheduler源码分析
- Android之系统自带的文字外观设置及实际显示效果图
- android surfaceflinger研究----显示系统
- Android GDI 显示系统
- Android 截取指定号码的短信 并且不让系统获取短信通知用户