Android中监听短信的两种方法

1、监听广播

缺点，因为优先级的原因可能接收不到。

代码:

public static final string tag = "imichatsmsreceiver";

  public static final string sms_received_action = "android.provider.telephony.sms_received";

  public void onreceive(context context, intent intent)
  {
    if (intent.getaction().equals(sms_received_action))
    {
      smsmessage[] messages = getmessagesfromintent(intent);

      for (smsmessage message : messages)
      {

        string text = message.getoriginatingaddress() + " : " +

        message.getdisplayoriginatingaddress() + " : " +

        message.getdisplaymessagebody() + " : " +

        message.gettimestampmillis();

        string num = message.getoriginatingaddress();
        log.i(tag, "-------------" + text);
        toast.maketext(context, text, toast.length_long).show();
        sendmessage(num, "来自" + num + "的短信已经收到", context);

        context.getcontentresolver().registercontentobserver(uri.parse("content://sms/"), true, new smsobserver(new handler(), context));
      }
    }
  }

  public void sendmessage(string num, string text, context context)
  {
    smsmanager smsmanager = smsmanager.getdefault();
    pendingintent sentintent = pendingintent.getbroadcast(context, 0, new intent(), 0);
    string strcontent = text;

    smsmanager.sendtextmessage(num, null, strcontent, sentintent, null);

    telephonymanager tl = (telephonymanager) context.getsystemservice(context.telephony_service);
    int itype = tl.getphonetype();
    log.i(tag, "-------------" + "当前卡类型为：" + itype);
    if (itype == telephonymanager.phone_type_gsm)
    {
      toast.maketext(context, "当前卡类型为：gsm", toast.length_long).show();
    }
    else if (itype == telephonymanager.phone_type_cdma)
    {
      toast.maketext(context, "当前卡类型为 : cdma", toast.length_long).show();
    }
    else if (itype == telephonymanager.phone_type_none)
    {
      toast.maketext(context, "当前卡类型为：none", toast.length_long).show();
    }
  }

  public final smsmessage[] getmessagesfromintent(intent intent)
  {

    object[] messages = (object[]) intent.getserializableextra("pdus");

    byte[][] pduobjs = new byte[messages.length][];

    for (int i = 0; i < messages.length; i++)

    {

      pduobjs[i] = (byte[]) messages[i];

    }

    byte[][] pdus = new byte[pduobjs.length][];

    int pducount = pdus.length;

    smsmessage[] msgs = new smsmessage[pducount];

    for (int i = 0; i < pducount; i++)

    {

      pdus[i] = pduobjs[i];

      msgs[i] = smsmessage.createfrompdu(pdus[i]);

    }

    return msgs;

  }

2、采用观察方法，监听短信数据库

public class smsobserver extends contentobserver
{

  private context mcontext;

  public smsobserver(handler handler , context context)
  {
    super(handler);
    mcontext = context;
  }
  
  public void onchange(boolean selfchange) 
  { 
    super.onchange(selfchange); 
    cursor cursor =null; 
    try
    {
      //读取收件箱中的短信 
      cursor = mcontext.getcontentresolver().query(uri.parse("content://sms/inbox"), null, null, null, "date desc"); 
      string body;
      boolean hasdone =false;
      if (cursor !=null)
      { 
        while (cursor.movetonext())
        {
          body = cursor.getstring(cursor.getcolumnindex("body"));
          if(body !=null)//&& body.equals("【startmyactivity】"
          {
            hasdone =true;
            break;
          }
          if (hasdone)
          {
            break;
          }
        } 
      } 
    }
    catch(exception e)
    {
      e.printstacktrace();
    }
    finally
    {
      if(cursor!=null)    cursor.close();
    }
  }

}

用到的权限：

<uses-permission android:name="android.permission.send_sms" />
  <uses-permission android:name="android.permission.receive_sms" />
  <uses-permission android:name="android.permission.read_sms" />