想要开发彩信功能的收发，就必须了解原生SMS彩信是如何发送，因此我们就要基于它的流程来开发彩信的发送。。。。
对看过彩信发送流程的同学，想必就不过多介绍，此篇只简单介绍一下，原生的彩信发送是在WorkingMessage.java 中刷新收信人。生成彩信的可发送的Pdu—SendReq
然后存进数据库中，然后会构建MmsMessageSender，传入收信人和彩信的Uri，，让其发送。后面在启动TransactionService发送，，中间一堆流程就不说了，因此我们
想要自己发送彩信，就要知道它是如何生成彩信可发送的 Pdu，这个是最重要的。贴出简单的demo ，如何生成。
import com.google.android.mms.pdu.CharacterSets;
import com.google.android.mms.pdu.EncodedStringValue;
import com.google.android.mms.pdu.PduBody;
import com.google.android.mms.pdu.PduComposer;
import com.google.android.mms.pdu.PduPart;
import com.google.android.mms.pdu.SendReq;
import com.google.android.mms.pdu.PduPersister;
private void SendReq(){
String filename = MmsUtils.getRealFilePath(this,uri);
Uri mmsdraft = Uri.parse("content://mms/drafts");
Uri res = null;
int size = MmsUtils.getsize(uri,this);
final SendReq sendRequest = new SendReq();
final PduBody pduBody = new PduBody();
final PduPart part = new PduPart();
part.setName(filename.getBytes());
part.setContentType((MmsUtils.getFileContentType(filename)).getBytes());
final PduPart partPdu = new PduPart();
partPdu.setCharset(CharacterSets.UTF_8);//UTF_16
partPdu.setName(part.getName());
partPdu.setContentType(part.getContentType());
partPdu.setDataUri(uri);
String body = informationEditText.getText().toString().trim();
Log.d("pyh","pduBody == "+body);
if (!TextUtils.isEmpty(body)) {
final PduPart txtpartPdu = new PduPart();
txtpartPdu.setCharset(CharacterSets.UTF_8);
txtpartPdu.setContentType("text/plain".getBytes());
txtpartPdu.setName(("text.txt".getBytes()));
txtpartPdu.setData(body.getBytes());
pduBody.addPart(txtpartPdu);
Log.d("pyh","pduBody == addPart");
}
pduBody.addPart(partPdu);
Log.d("pyh","uriName == "+MmsUtils.getFileName(filename));
Log.d("pyh","uriContentType == "+MmsUtils.getFileContentType(filename));
Log.d("pyh","urigetSize == "+MmsUtils.getsize(uri,this));
Log.d("pyh","addresseeText == "+addresseeText.getText().toString());
EncodedStringValue[] rec = EncodedStringValue.extract(addresseeText.getText().toString());
if (rec != null && rec.length > 0) {
sendRequest.addTo(rec[0]);
}
sendRequest.setDate(System.currentTimeMillis() / 1000L);
sendRequest.setBody(pduBody);
try {
PduPersister mPersister = PduPersister.getPduPersister(this);
res = mPersister.persist(sendRequest, mmsdraft,
true, false, null);
Log.d("pyh","PduPersister res == "+res);
} catch (Exception e) {
Log.d("pyh","Exception == "+e);
}
Log.d("pyh","res == "+res);
try{
Intent intent = new Intent("DY_MMS_SEND_ACTION");
intent.putExtra(PhoneConstants.SUBscriptION_KEY, mMessageSubId);
intent.putExtra(BUNDLE_URI, res.toString());
PendingIntent sentIntent = PendingIntent.getBroadcast(this, 0, intent,
PendingIntent.FLAG_UPDATe_CURRENT);
SmsManager.getSmsManagerForSubscriptionId(mMessageSubId).sendStoredMultimediaMessage(res,
MmsUtils.getMmsServiceConfig(),
sentIntent);
}catch (Exception e) {
Log.d("pyh","Exception == "+e);
}
}
其中Google 包是一定要导入的，方法头几句就是对彩信内容的组装，其中sendRequest.addTo(rec[0]); 就是你要发送的号码，当然你也可以发送多个号码，res = mPersister.persist(sendRequest, mmsdraft, true, false, null); 这个方法就是将你组装好的pdu存进数据库中。 好了这时简单的彩信pdu就已经生成好了，，那我们如何发送呢？
我主要是在MTK的源码中找方法，其中sendStoredMultimediaMessage 就是将其发送，这个方法会调用package/services/Mms 服务包中的方法发送，也就是我们所了解的启动Http 发送，（源码中Transaction.sendPdu()会先设置好网路，然后直接调用HttpUtils 中的httpConnection()方法，用HTTP 把彩信发送出去），但有个这个方法，我们就不必去自己写，是不是很开心。。发送时的PendingIntent 可以得到返回的信息。
public class MMSReceivers extends BroadcastReceiver {
public static final String BUNDLE_URI = "bundle_uri";
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
Log.d("pyh","Receivers_MMS_URI = "+(intent.getStringExtra(BUNDLE_URI));
Uri mmsUri = Uri.parse(intent.getStringExtra(NewSmsActivity.BUNDLE_URI));
int result = intent.getIntExtra("result", SmsManager.MMS_ERROR_UNSPECIFIED);
switch (getResultCode()) {
case Activity.RESULT_OK:
Toast.makeText(context, R.string.sms_send_sucess, Toast.LENGTH_SHORT).show();
break;
default:
Toast.makeText(context, R.string.sms_send_fail, Toast.LENGTH_SHORT).show();
break;
}
}
}
mmsUri就是你所发送短信的数据库中的Uri了。对了还有就是你所发送的彩信附件的格式要有所注意，贴出简单的demo
public static final String IMAGE_BMP = "image/x-ms-bmp";
public static final String IMAGE_XBMP = "image/bmp";
public static final String IMAGE_JPG = "image/jpg";
public static final String IMAGE_WBMP = "image/vnd.wap.wbmp";
public static final String IMAGE_GIF = "image/gif";
public static final String IMAGE_PNG = "image/png";
public static final String IMAGE_JPEG = "image/jpeg";
public static final String TEXT_VCALENDAR = "text/x-vCalendar";
public static final String TEXT_VCARD = "text/x-vCard";
public static final String AUDIO_IMELODY = "audio/imelody";
public static final String AUDIO_OGG = "application/ogg";
public static final String AUDIO_AAC = "audio/aac";
public static final String AUDIO_MPEG = "audio/mpeg";
public static final String AUDIO_3GPP = "audio/3gpp";
public static final String AUDIO_AMR = "audio/amr";
public static final String AUDIO_MP3 = "audio/mp3";
public static final String VIDEO_MP4 = "video/mp4";
public static final String VIDEO_3GPP = "video/3gpp";
public static final String CONFIG_USER_AGENT = "userAgent";
public static final String CONFIG_UA_PROF_URL = "uaProfUrl";
public String getFileContentType(String fileName){
String finalContentType = "";
if(fileName != null){
String suffix = fileName.contains(".") ?
fileName.substring(fileName.lastIndexOf("."), fileName.length()) : "";
if (suffix.equals("")) {
return null;
} else if (suffix.equalsIgnoreCase(".bmp")) {
finalContentType = IMAGE_BMP;
} else if (suffix.equalsIgnoreCase(".jpg")) {
finalContentType = IMAGE_JPG;
} else if (suffix.equalsIgnoreCase(".wbmp")) {
finalContentType = IMAGE_WBMP;
} else if (suffix.equalsIgnoreCase(".gif")) {
finalContentType = IMAGE_GIF;
} else if (suffix.equalsIgnoreCase(".png")) {
finalContentType = IMAGE_PNG;
} else if (suffix.equalsIgnoreCase(".jpeg")) {
finalContentType = IMAGE_JPEG;
} else if (suffix.equalsIgnoreCase(".vcs")) {
finalContentType = TEXT_VCALENDAR;
} else if (suffix.equalsIgnoreCase(".amr")) {
finalContentType = AUDIO_AMR;
} else if (suffix.equalsIgnoreCase(".vcf")) {
finalContentType = TEXT_VCARD;
} else if (suffix.equalsIgnoreCase(".imy")) {
finalContentType = AUDIO_IMELODY;
// M: fix bug ALPS00355917
} else if (suffix.equalsIgnoreCase(".ogg")) {
finalContentType = AUDIO_OGG;
} else if (suffix.equalsIgnoreCase(".mp3")) {
finalContentType = AUDIO_MP3;
} else if (suffix.equalsIgnoreCase(".mp4")) {
finalContentType = VIDEO_MP4;
} else if (suffix.equalsIgnoreCase(".3gpp")) {
finalContentType = VIDEO_3GPP;
} else if (suffix.equalsIgnoreCase(".aac")) {
finalContentType = AUDIO_AAC;
} else if (suffix.equalsIgnoreCase(".mp2")) {
finalContentType = AUDIO_MPEG;
/// M: fix bug ALPS00444328, 3gp audio contentType will be modified
/// when CMCC send to CU
} else if (suffix.equalsIgnoreCase(".3gp")) {
finalContentType = AUDIO_3GPP;
} else {
String extension = fileName.contains(".")
? fileName.substring(fileName.lastIndexOf(".") + 1, fileName.length()) : "";
finalContentType = MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension);
if (finalContentType == null) {
return null;
}
}
return finalContentType;
}
return fileName;
}
这样简单的一条彩信就发送出去了，发送出去后，我们就也可以进行查询。sendStoredMultimediaMessage 成功后会将你的彩信存到收件箱中，那简单的数据库查询，大家可能都知道了。在此就不多说了。 （PS：此篇为原创，时间匆忙。可能有很多错误，欢迎大家指正修改。谢谢！）
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