[置顶] 基础总结篇：ContentProvider之读写短消息

在Android中ContentProvider应用场合还很多，读写短消息就是其中一个，今天我们就来探讨一下利用ContentProvider操作短消息的问题。

相对于联系人来说，短消息不是公开的，所以没有专门的API供我们调用，这就要求我们根据源代码进行分析研究，制定出一定的操作方案。

我们需要先找到短消息的数据源，打开/data/data/com.android.providers.telephony可以看到：

其中的mmssms.db就是短消息的数据源，朋友们可以导出一下这个文件，用专业工具软件查看一下表结构。为了方便大家理解，我简单介绍一下今天涉及到的两张表以及表中的常用字段：

如图所示，两张表分别是threads表和sms表，前者代表所有会话信息，每个会话代表和一个联系人之间短信的群组；后者代表短信的具体信息。在sms表中的thread_id指向了threads表中的_id，指定每条短信的会话id，以便对短信进行分组。下面介绍一下表中的每个字段的意义：

threads表：_id字段表示该会话id；date表示该会话最后一条短信的日期，一般用来对多个会话排序显示；message_count表示该会话所包含的短信数量；snippet表示该会话中最后一条短信的内容；read表示该会话是否已读（0：未读，1：已读），一般来说该会话中有了新短信但没查看时，该会话read变为未读状态，当查看过新短信后read就变为已读状态。

sms表：_id表示该短信的id；thread_id表示该短信所属的会话的id；date表示该短信的日期；read表示该短信是否已读；type表示该短信的类型，例如1表示接收类型，2表示发送类型，3表示草稿类型；body表示短信的内容。

下面我们会通过单元测试的方式演示一下读取会话信息和短信内容。在写代码之前，我们先初始化一些数据，具体过程是启动三个模拟器5554、5556、5558，让5554分别与5556和5558互发短信，如下：

我们看到5554这小子名叫Jack；5556名叫Lucy，可能认识有几天了，手机上存了她的号码；5558名叫Lisa，可能刚认识，还没来得及存号码。Jack这小子真狠啊，想同时泡两个妞，难道名字叫Jack的长得都很帅？下面是以上的两个会话信息：

可以看到，因为在联系人里存了Lucy，所以显示时并不再直接显示陌生的数字，而是其名字；括号内显示了该会话的短信数；下面文字显示了最后一条短信的内容和日期。

下面我们创建一个名为SMSTest的单元测试类，用于读取会话信息和短信内容，代码如下：

package com.scott.provider;

import java.text.SimpleDateFormat;

import android.content.ContentResolver;
import android.database.Cursor;
import android.database.CursorWrapper;
import android.net.Uri;
import android.test.AndroidTestCase;
import android.util.Log;

public class SMSTest extends AndroidTestCase {

    private static final String TAG = "SMSTest";

    //会话
    private static final String CONVERSATIONS = "content://sms/conversations/";
    //查询联系人
    private static final String CONTACTS_LOOKUP = "content://com.android.contacts/phone_lookup/";
    //全部短信
    private static final String SMS_ALL   = "content://sms/";
    //收件箱
//  private static final String SMS_INBOX = "content://sms/inbox";
    //已发送
//  private static final String SMS_SENT  = "content://sms/sent";
    //草稿箱
//  private static final String SMS_DRAFT = "content://sms/draft";

    private SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

    /**
     * 读取会话信息
     */
    public void testReadConversation() {
        ContentResolver resolver = getContext().getContentResolver();
        Uri uri = Uri.parse(CONVERSATIONS);
        String[] projection = new String[]{"groups.group_thread_id AS group_id", "groups.msg_count AS msg_count",
                        "groups.group_date AS last_date", "sms.body AS last_msg", "sms.address AS contact"};
        Cursor thinc = resolver.query(uri, projection, null, null, "groups.group_date DESC");   //查询并按日期倒序
        Cursor richc = new CursorWrapper(thinc) {   //对Cursor进行处理,遇到号码后获取对应的联系人名称
            @Override
            public String getString(int columnIndex) {
                if(super.getColumnIndex("contact") == columnIndex){
                    String contact = super.getString(columnIndex);
                    //读取联系人,查询对应的名称
                    Uri uri = Uri.parse(CONTACTS_LOOKUP + contact);
                    Cursor cursor = getContext().getContentResolver().query(uri, null, null, null, null);
                    if(cursor.moveToFirst()){
                        String contactName = cursor.getString(cursor.getColumnIndex("display_name"));
                        return contactName;
                    }
                    return contact;
                }
                return super.getString(columnIndex);
            }
        };
        while (richc.moveToNext()) {
            String groupId = "groupId: " + richc.getInt(richc.getColumnIndex("group_id"));
            String msgCount = "msgCount: " + richc.getLong(richc.getColumnIndex("msg_count"));
            String lastMsg = "lastMsg: " + richc.getString(richc.getColumnIndex("last_msg"));
            String contact = "contact: " + richc.getString(richc.getColumnIndex("contact"));
            String lastDate = "lastDate: " + dateFormat.format(richc.getLong(richc.getColumnIndex("last_date")));

            printLog(groupId, contact, msgCount, lastMsg, lastDate, "---------------END---------------");
        }
        richc.close();
    }

    /**
     * 读取短信
     */
    public void testReadSMS() {
        ContentResolver resolver = getContext().getContentResolver();
        Uri uri = Uri.parse(SMS_ALL);
        String[] projection = {"thread_id AS group_id", "address AS contact", "body AS msg_content", "date", "type"};
        Cursor c = resolver.query(uri, projection, null, null, "date DESC");    //查询并按日期倒序
        while (c.moveToNext()) {
            String groupId = "groupId: " + c.getInt(c.getColumnIndex("group_id"));
            String contact = "contact: " + c.getString(c.getColumnIndex("contact"));
            String msgContent = "msgContent: " + c.getString(c.getColumnIndex("msg_content"));
            String date = "date: " + dateFormat.format(c.getLong(c.getColumnIndex("date")));
            String type = "type: " + getTypeById(c.getInt(c.getColumnIndex("type")));

            printLog(groupId, contact, msgContent, date, type, "---------------END---------------");
        }
        c.close();
    }

    private String getTypeById(int typeId) {
        switch (typeId) {
        case 1: return "receive";
        case 2: return "send";
        case 3: return "draft";
        default: return "none";
        }
    }

    private void printLog(String...strings) {
        for (String s : strings) {
            Log.i(TAG, s == null ? "NULL" : s);
        }
    }
}

package com.scott.provider;

import java.text.SimpleDateFormat;

import android.content.ContentResolver;
import android.database.Cursor;
import android.database.CursorWrapper;
import android.net.Uri;
import android.test.AndroidTestCase;
import android.util.Log;

public class SMSTest extends AndroidTestCase {
	
	private static final String TAG = "SMSTest";
	
	//会话
	private static final String CONVERSATIONS = "content://sms/conversations/";
	//查询联系人
	private static final String CONTACTS_LOOKUP = "content://com.android.contacts/phone_lookup/";
	//全部短信
	private static final String SMS_ALL   = "content://sms/";
	//收件箱
//	private static final String SMS_INBOX = "content://sms/inbox";
	//已发送
//	private static final String SMS_SENT  = "content://sms/sent";
	//草稿箱
//	private static final String SMS_DRAFT = "content://sms/draft";
	
	private SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
	
	/**
	 * 读取会话信息
	 */
	public void testReadConversation() {
		ContentResolver resolver = getContext().getContentResolver();
		Uri uri = Uri.parse(CONVERSATIONS);
		String[] projection = new String[]{"groups.group_thread_id AS group_id", "groups.msg_count AS msg_count",
						"groups.group_date AS last_date", "sms.body AS last_msg", "sms.address AS contact"};
		Cursor thinc = resolver.query(uri, projection, null, null, "groups.group_date DESC");	//查询并按日期倒序
		Cursor richc = new CursorWrapper(thinc) {	//对Cursor进行处理,遇到号码后获取对应的联系人名称
			@Override
        	public String getString(int columnIndex) {
				if(super.getColumnIndex("contact") == columnIndex){
					String contact = super.getString(columnIndex);
					//读取联系人,查询对应的名称
					Uri uri = Uri.parse(CONTACTS_LOOKUP + contact);
					Cursor cursor = getContext().getContentResolver().query(uri, null, null, null, null);
					if(cursor.moveToFirst()){
        				String contactName = cursor.getString(cursor.getColumnIndex("display_name"));
        				return contactName;
        			}
					return contact;
				}
				return super.getString(columnIndex);
			}
		};
		while (richc.moveToNext()) {
			String groupId = "groupId: " + richc.getInt(richc.getColumnIndex("group_id"));
			String msgCount = "msgCount: " + richc.getLong(richc.getColumnIndex("msg_count"));
			String lastMsg = "lastMsg: " + richc.getString(richc.getColumnIndex("last_msg"));
			String contact = "contact: " + richc.getString(richc.getColumnIndex("contact"));
			String lastDate = "lastDate: " + dateFormat.format(richc.getLong(richc.getColumnIndex("last_date")));

			printLog(groupId, contact, msgCount, lastMsg, lastDate, "---------------END---------------");
		}
		richc.close();
	}
	
	/**
	 * 读取短信
	 */
	public void testReadSMS() {
		ContentResolver resolver = getContext().getContentResolver();
		Uri uri = Uri.parse(SMS_ALL);
		String[] projection = {"thread_id AS group_id", "address AS contact", "body AS msg_content", "date", "type"};
		Cursor c = resolver.query(uri, projection, null, null, "date DESC");	//查询并按日期倒序
		while (c.moveToNext()) {
			String groupId = "groupId: " + c.getInt(c.getColumnIndex("group_id"));
			String contact = "contact: " + c.getString(c.getColumnIndex("contact"));
			String msgContent = "msgContent: " + c.getString(c.getColumnIndex("msg_content"));
			String date = "date: " + dateFormat.format(c.getLong(c.getColumnIndex("date")));
			String type = "type: " + getTypeById(c.getInt(c.getColumnIndex("type")));

			printLog(groupId, contact, msgContent, date, type, "---------------END---------------");
		}
		c.close();
	}
	
	private String getTypeById(int typeId) {
		switch (typeId) {
		case 1: return "receive";
		case 2: return "send";
		case 3: return "draft";
		default: return "none";
		}
	}
	
	private void printLog(String...strings) {
		for (String s : strings) {
			Log.i(TAG, s == null ? "NULL" : s);
		}
	}
}

我们先分析一下testReadConversation()方法，它是用来读取所有的会话信息的，根据“content://sms/conversations/”这个URI进行会话数据的读取操作，当取到数据后，对数据进一步的包装，具体做法是遇到号码时再根据“content://com.android.contacts/phone_lookup/”到联系人中查找对应的名称，如果存在则显示名称而不是号码。我们注意到在查询会话时使用到了projection，这些都是根据什么制定的呢？这就需要我们去看一下源代码了。

我们找到TelephonyProvider中的com/android/providers/telephony/SmsProvider.java文件，看一看究竟：

@Override
public Cursor query(Uri url, String[] projectionIn, String selection,
        String[] selectionArgs, String sort) {
    SQLiteQueryBuilder qb = new SQLiteQueryBuilder();

    // Generate the body of the query.
    int match = sURLMatcher.match(url);
    switch (match) {
    ...
    case SMS_CONVERSATIONS:
        qb.setTables("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");
        qb.appendWhere("sms.thread_id = groups.group_thread_id AND sms.date ="
               + "groups.group_date");
        qb.setProjectionMap(sConversationProjectionMap);
        break;
        ...
    }

    String orderBy = null;

    if (!TextUtils.isEmpty(sort)) {
        orderBy = sort;
    } else if (qb.getTables().equals(TABLE_SMS)) {
        orderBy = Sms.DEFAULT_SORT_ORDER;
    }

    SQLiteDatabase db = mOpenHelper.getReadableDatabase();
    Cursor ret = qb.query(db, projectionIn, selection, selectionArgs,
                          null, null, orderBy);

    // TODO: Since the URLs are a mess, always use content://sms
    ret.setNotificationUri(getContext().getContentResolver(),
            NOTIFICATION_URI);
    return ret;
}

    @Override
    public Cursor query(Uri url, String[] projectionIn, String selection,
            String[] selectionArgs, String sort) {
        SQLiteQueryBuilder qb = new SQLiteQueryBuilder();

        // Generate the body of the query.
        int match = sURLMatcher.match(url);
        switch (match) {
        ...
        case SMS_CONVERSATIONS:
            qb.setTables("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");
            qb.appendWhere("sms.thread_id = groups.group_thread_id AND sms.date ="
                   + "groups.group_date");
            qb.setProjectionMap(sConversationProjectionMap);
            break;
            ...
        }
		
        String orderBy = null;

        if (!TextUtils.isEmpty(sort)) {
            orderBy = sort;
        } else if (qb.getTables().equals(TABLE_SMS)) {
            orderBy = Sms.DEFAULT_SORT_ORDER;
        }

        SQLiteDatabase db = mOpenHelper.getReadableDatabase();
        Cursor ret = qb.query(db, projectionIn, selection, selectionArgs,
                              null, null, orderBy);

        // TODO: Since the URLs are a mess, always use content://sms
        ret.setNotificationUri(getContext().getContentResolver(),
                NOTIFICATION_URI);
        return ret;
    }

我们看到，在query方法的case语句中，如果是SMS_CONVERSATIONS类型的话，就为SQLiteQueryBuilder实例对象qb设置对应的查询表和where语句，另外还会为其设置一个基本的查询映射map即sConversationProjectionMap，这个变量在下面代码中体现：

static {
    ...
    sURLMatcher.addURI("sms", "conversations", SMS_CONVERSATIONS);
    sURLMatcher.addURI("sms", "conversations/*", SMS_CONVERSATIONS_ID);
    ...

    sConversationProjectionMap.put(Sms.Conversations.SNIPPET,
        "sms.body AS snippet");
    sConversationProjectionMap.put(Sms.Conversations.THREAD_ID,
        "sms.thread_id AS thread_id");
    sConversationProjectionMap.put(Sms.Conversations.MESSAGE_COUNT,
        "groups.msg_count AS msg_count");
    sConversationProjectionMap.put("delta", null);
}

    static {
        ...
        sURLMatcher.addURI("sms", "conversations", SMS_CONVERSATIONS);
        sURLMatcher.addURI("sms", "conversations/*", SMS_CONVERSATIONS_ID);
        ...

        sConversationProjectionMap.put(Sms.Conversations.SNIPPET,
            "sms.body AS snippet");
        sConversationProjectionMap.put(Sms.Conversations.THREAD_ID,
            "sms.thread_id AS thread_id");
        sConversationProjectionMap.put(Sms.Conversations.MESSAGE_COUNT,
            "groups.msg_count AS msg_count");
        sConversationProjectionMap.put("delta", null);
    }

这几对数据有什么用处呢？如果我们查询时的projection为null的话，sConversationProjectionMap就将转换为默认的projection，最后查询结果中仅包含这三个最基本的字段：snippet、thread_id、msg_count，可以代表一个会话的最简明的信息，朋友们可以亲自试一试。

当然，如果想运行上面的测试用例，需要配置两个权限：读取短消息权限和读取联系人权限，如下：

<!-- 读取短消息 -->
<uses-permission android:name="android.permission.READ_SMS" />
<!-- 读取联系人 -->
<uses-permission android:name="android.permission.READ_CONTACTS"/>

    <!-- 读取短消息 -->
    <uses-permission android:name="android.permission.READ_SMS" />
    <!-- 读取联系人 -->
    <uses-permission android:name="android.permission.READ_CONTACTS"/>

然后我们运行一下测试用例，结果如下：

以上就是读取会话的全部内容，下面我们再介绍其中的testReadSMS()方法。在这个方法中我们试图将所有的短消息都获取到，使用了“content://sms/”进行查询，这个查询相对简单了许多。另外代码中也有几个没使用到的URI，他们分别是收件箱、已发送和草稿箱，这几个查询是“content://sms/”的子集，分别用了不同的选择条件对短信表进行查询，我们看一下具体的源代码：

  @Override
  public Cursor query(Uri url, String[] projectionIn, String selection,
          String[] selectionArgs, String sort) {
      SQLiteQueryBuilder qb = new SQLiteQueryBuilder();

      // Generate the body of the query.
      int match = sURLMatcher.match(url);
      switch (match) {

      case SMS_ALL:
          constructQueryForBox(qb, Sms.MESSAGE_TYPE_ALL);
          break;
      case SMS_INBOX:
          constructQueryForBox(qb, Sms.MESSAGE_TYPE_INBOX);
          break;

      case SMS_SENT:
          constructQueryForBox(qb, Sms.MESSAGE_TYPE_SENT);
          break;

      case SMS_DRAFT:
          constructQueryForBox(qb, Sms.MESSAGE_TYPE_DRAFT);
          break;
      }
...
  }

    @Override
    public Cursor query(Uri url, String[] projectionIn, String selection,
            String[] selectionArgs, String sort) {
        SQLiteQueryBuilder qb = new SQLiteQueryBuilder();

        // Generate the body of the query.
        int match = sURLMatcher.match(url);
        switch (match) {
        
        case SMS_ALL:
            constructQueryForBox(qb, Sms.MESSAGE_TYPE_ALL);
            break;
        case SMS_INBOX:
            constructQueryForBox(qb, Sms.MESSAGE_TYPE_INBOX);
            break;

        case SMS_SENT:
            constructQueryForBox(qb, Sms.MESSAGE_TYPE_SENT);
            break;

        case SMS_DRAFT:
            constructQueryForBox(qb, Sms.MESSAGE_TYPE_DRAFT);
            break;
        }
		...
    }

可以看到，他们都调用了constructQueryForBox方法，这个方法是干什么的呢？

private void constructQueryForBox(SQLiteQueryBuilder qb, int type) {
    qb.setTables(TABLE_SMS);

    if (type != Sms.MESSAGE_TYPE_ALL) {
        qb.appendWhere("type=" + type);
    }
}

    private void constructQueryForBox(SQLiteQueryBuilder qb, int type) {
        qb.setTables(TABLE_SMS);

        if (type != Sms.MESSAGE_TYPE_ALL) {
            qb.appendWhere("type=" + type);
        }
    }

我们发现它其实是添加过滤条件的，如果不是查询全部，则添加类型过滤信息，因此查询出不同的短信集合。朋友们也可以亲自试一试不同类型的查询。

另外，如果我们想根据会话来查询对应的短信集合的话，我们可以用以下两种方式来完成：

1.“content://sms/”（selection：“thread_id=3”）

2.“content://sms/conversations/3”

第一种比较容易想到查询的过程，即在上面的基础上加上“thread_id=3”这条where语句即可；第二种是在会话path后面跟上会话id即可，具体的逻辑如下：

case SMS_CONVERSATIONS_ID:
int threadID;
try {
    threadID = Integer.parseInt(url.getPathSegments().get(1));
    if (Log.isLoggable(TAG, Log.VERBOSE)) {
        Log.d(TAG, "query conversations: threadID=" + threadID);
    }
}
catch (Exception ex) {
    Log.e(TAG,
          "Bad conversation thread id: "
          + url.getPathSegments().get(1));
    return null;
}
qb.setTables(TABLE_SMS);
qb.appendWhere("thread_id = " + threadID);
break;

            case SMS_CONVERSATIONS_ID:
            int threadID;
            try {
                threadID = Integer.parseInt(url.getPathSegments().get(1));
                if (Log.isLoggable(TAG, Log.VERBOSE)) {
                    Log.d(TAG, "query conversations: threadID=" + threadID);
                }
            }
            catch (Exception ex) {
                Log.e(TAG,
                      "Bad conversation thread id: "
                      + url.getPathSegments().get(1));
                return null;
            }
            qb.setTables(TABLE_SMS);
            qb.appendWhere("thread_id = " + threadID);
            break;

我们可以看到，它最终还是和第一种方式走上了相同的道儿，两者没什么本质上的区别。但是从简单易用性上来讲，这一种方式是比较好的，朋友们可以比较一下。

以上就是获取会话内容和短信内容的全部信息，下面我们介绍一下短信的写入操作。

发送和写入短信

在某些场合，我们需要发送短信，并将短信写入数据源中，这时我们就需要了解一下发送短信机制和写入短信机制。

我们将试图发送一条短信到指定的地址，同时将短信的内容写入到短信数据源中，待短信发送成功后，我们告知用户发送成功，待对方接收到短信后，我们告知用户对方接收成功。

要实现这些功能，我们需要了解以下几个重点内容：

1.使用android.telephony.SmsManager的API发送短信

2.使用ContentProvider机制对“content://sms/sent”这个URI进行写入操作

3.注册“SENT_SMS_ACTION”这个广播地址，待短信发送成功后接收到这条广播

4.注册“DELIVERED_SMS_ACTION”这个广播地址，待对方接收到短信后接收到这条广播

下面我们就用代码实现这些功能，创建一个名为SMSActivity的Activity，如下：

package com.scott.provider;

import java.util.List;

import android.app.Activity;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.ContentValues;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.net.Uri;
import android.os.Bundle;
import android.telephony.SmsManager;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;

public class SMSActivity extends Activity {

    private SendReceiver sendReceiver = new SendReceiver();
    private DeliverReceiver deliverReceiver = new DeliverReceiver();

    private EditText address;
    private EditText body;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.sms);

        address = (EditText) findViewById(R.id.address);
        body = (EditText) findViewById(R.id.body);

        //注册发送成功的广播
        registerReceiver(sendReceiver, new IntentFilter("SENT_SMS_ACTION"));
        //注册接收成功的广播
        registerReceiver(deliverReceiver, new IntentFilter("DELIVERED_SMS_ACTION"));
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();

        unregisterReceiver(sendReceiver);
        unregisterReceiver(deliverReceiver);
    }

    public void sendSMS(View view) {
        String address = this.address.getText().toString();
        String body = this.body.getText().toString();
        //android.telephony.SmsManager, not [android.telephony.gsm.SmsManager]
        SmsManager smsManager = SmsManager.getDefault();
        //短信发送成功或失败后会产生一条SENT_SMS_ACTION的广播
        PendingIntent sendIntent = PendingIntent.getBroadcast(this, 0, new Intent("SENT_SMS_ACTION"), 0);
        //接收方成功收到短信后,发送方会产生一条DELIVERED_SMS_ACTION广播
        PendingIntent deliveryIntent = PendingIntent.getBroadcast(this, 0, new Intent("DELIVERED_SMS_ACTION"), 0);
        if (body.length() > 70) {    //如果字数超过70,需拆分成多条短信发送
            List<String> msgs = smsManager.divideMessage(body);
            for (String msg : msgs) {
                smsManager.sendTextMessage(address, null, msg, sendIntent, deliveryIntent);
            }
        } else {
            smsManager.sendTextMessage(address, null, body, sendIntent, deliveryIntent);
        }

        //写入到短信数据源
        ContentValues values = new ContentValues();
        values.put("address",address);  //发送地址
        values.put("body", body);   //消息内容
        values.put("date", System.currentTimeMillis()); //创建时间
        values.put("read", 0);  //0:未读;1:已读
        values.put("type", 2);  //1:接收;2:发送
        getContentResolver().insert(Uri.parse("content://sms/sent"), values);   //插入数据
    }

    private class SendReceiver extends BroadcastReceiver {

        @Override
        public void onReceive(Context context, Intent intent) {
            switch (getResultCode()) {
            case Activity.RESULT_OK:
                Toast.makeText(context, "Sent Successfully.", Toast.LENGTH_SHORT).show();
                break;
            default:
                Toast.makeText(context, "Failed to Send.", Toast.LENGTH_SHORT).show();
            }
        }
    }

    /**
     * 发送方的短信发送到对方手机上之后,对方手机会返回给运营商一个信号,
     * 运营商再把这个信号发给发送方,发送方此时可确认对方接收成功
     * 模拟器不支持,真机上需等待片刻
     * @author user
     *
     */
    private class DeliverReceiver extends BroadcastReceiver {

        @Override
        public void onReceive(Context context, Intent intent) {
            Toast.makeText(context, "Delivered Successfully.", Toast.LENGTH_SHORT).show();
        }
    }
}

package com.scott.provider;

import java.util.List;

import android.app.Activity;
import android.app.PendingIntent;
import android.content.BroadcastReceiver;
import android.content.ContentValues;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.net.Uri;
import android.os.Bundle;
import android.telephony.SmsManager;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;

public class SMSActivity extends Activity {
	
	private SendReceiver sendReceiver = new SendReceiver();
	private DeliverReceiver deliverReceiver = new DeliverReceiver();
	
	private EditText address;
	private EditText body;
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.sms);
		
		address = (EditText) findViewById(R.id.address);
		body = (EditText) findViewById(R.id.body);
		
		//注册发送成功的广播
		registerReceiver(sendReceiver, new IntentFilter("SENT_SMS_ACTION"));
		//注册接收成功的广播
		registerReceiver(deliverReceiver, new IntentFilter("DELIVERED_SMS_ACTION"));
	}

	@Override
	protected void onDestroy() {
		super.onDestroy();
		
		unregisterReceiver(sendReceiver);
		unregisterReceiver(deliverReceiver);
	}
	
	public void sendSMS(View view) {
		String address = this.address.getText().toString();
		String body = this.body.getText().toString();
		//android.telephony.SmsManager, not [android.telephony.gsm.SmsManager]
		SmsManager smsManager = SmsManager.getDefault();
		//短信发送成功或失败后会产生一条SENT_SMS_ACTION的广播
		PendingIntent sendIntent = PendingIntent.getBroadcast(this, 0, new Intent("SENT_SMS_ACTION"), 0);
		//接收方成功收到短信后,发送方会产生一条DELIVERED_SMS_ACTION广播
		PendingIntent deliveryIntent = PendingIntent.getBroadcast(this, 0, new Intent("DELIVERED_SMS_ACTION"), 0);
        if (body.length() > 70) {	//如果字数超过70,需拆分成多条短信发送
            List<String> msgs = smsManager.divideMessage(body);
            for (String msg : msgs) {
                smsManager.sendTextMessage(address, null, msg, sendIntent, deliveryIntent);                        
            }
        } else {
            smsManager.sendTextMessage(address, null, body, sendIntent, deliveryIntent);
        }
        
        //写入到短信数据源
        ContentValues values = new ContentValues();
        values.put("address",address);	//发送地址
        values.put("body", body);	//消息内容
        values.put("date", System.currentTimeMillis());	//创建时间
        values.put("read", 0);	//0:未读;1:已读
        values.put("type", 2);	//1:接收;2:发送
        getContentResolver().insert(Uri.parse("content://sms/sent"), values);	//插入数据
	}
	
	private class SendReceiver extends BroadcastReceiver {

		@Override
		public void onReceive(Context context, Intent intent) {
			switch (getResultCode()) {
			case Activity.RESULT_OK:
				Toast.makeText(context, "Sent Successfully.", Toast.LENGTH_SHORT).show();
				break;
			default:
				Toast.makeText(context, "Failed to Send.", Toast.LENGTH_SHORT).show();
			}
		}
	}

	/**
	 * 发送方的短信发送到对方手机上之后,对方手机会返回给运营商一个信号,
	 * 运营商再把这个信号发给发送方,发送方此时可确认对方接收成功
	 * 模拟器不支持,真机上需等待片刻
	 * @author user
	 *
	 */
	private class DeliverReceiver extends BroadcastReceiver {

		@Override
		public void onReceive(Context context, Intent intent) {
			Toast.makeText(context, "Delivered Successfully.", Toast.LENGTH_SHORT).show();
		}
	}
}

布局文件如下：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="address"/>
    <EditText
        android:id="@+id/address"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"/>
    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="body"/>
    <EditText
        android:id="@+id/body"
        android:layout_width="fill_parent"
        android:layout_height="150dp"
        android:gravity="top"/>
    <Button
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="sendSMS"
        android:onClick="sendSMS"/>
</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
    <TextView
    	android:layout_width="fill_parent"
    	android:layout_height="wrap_content"
    	android:text="address"/>
    <EditText
    	android:id="@+id/address"
    	android:layout_width="fill_parent"
    	android:layout_height="wrap_content"/>
    <TextView
    	android:layout_width="fill_parent"
    	android:layout_height="wrap_content"
    	android:text="body"/>
    <EditText
    	android:id="@+id/body"
    	android:layout_width="fill_parent"
    	android:layout_height="150dp"
    	android:gravity="top"/>
	<Button
		android:layout_width="fill_parent"
		android:layout_height="wrap_content"
		android:text="sendSMS"
		android:onClick="sendSMS"/>
</LinearLayout>

需要注意的是，这个过程要声明发送短信的权限和写入短信的权限，我们在AndroidManifest.xml的声明如下：

<!-- 发送短消息 -->
   <uses-permission android:name="android.permission.SEND_SMS"/>
   <!-- 写入短消息 -->
   <uses-permission android:name="android.permission.WRITE_SMS" />

	<!-- 发送短消息 -->
    <uses-permission android:name="android.permission.SEND_SMS"/>
    <!-- 写入短消息 -->
    <uses-permission android:name="android.permission.WRITE_SMS" />

然后，运行该程序，我们让Jack给Lisa发送一条短信，看看结果如何：

看来我们的操作成功了，到底Jack能不能泡到Lisa呢，朋友们，发挥你们的想象力吧。

最后需要注意的一件事，代码里也提到过，就是在模拟器测试时，是不支持“接收成功”这个功能的，所以朋友们想要看到“Delivered Successfully”，还必须在真机上试，并且需要耐心等上片刻。感兴趣的朋友赶紧试一试吧。