博客

            Intent sendIntent = new Intent(Intent.ACTION_SEND,  Uri.parse("mms://"));
	    sendIntent.setType("image/jpeg");
	    String url = "file://sdcard//tmpPhoto.jpg";
	    sendIntent.putExtra(Intent.EXTRA_STREAM, Uri.parse(url));
	    startActivity(Intent.createChooser(sendIntent, "MMS:"));

但是这种方法往往不能满足我们的需求，能不能不调用系统界面，自己实现发送彩信呢？经过几天的努力，终于找到了解决办法。

第一步：先构造出你要发送的彩信内容，即构建一个pdu，需要用到以下几个类，这些类都是从android源码的MMS应用中mms.pdu包中copy出来的。你需要将pdu包中的所有类

都拷贝到你的工程中，然后自己酌情调通。

   final SendReq sendRequest = new SendReq();
   final PduBody pduBody = new PduBody();
final PduPart part = new PduPart();//存放附件，每个附件是一个part，如果添加多个附件，就想body中add多个part。

   pduBody.addPart(partPdu);
   sendRequest.setBody(pduBody);
   final PduComposer composer = new PduComposer(ctx, sendRequest);
final byte[] bytesToSend = composer.make(); //将彩信的内容以及主题等信息转化成byte数组，准备通过http协议//发送到 ”http://mmsc.monternet.com”;

第二步：发送彩信到彩信中心。

构建pdu的代码：

                    String subject = "测试彩信";
		    String recipient = "接收彩信的号码";//138xxxxxxx
		    final SendReq sendRequest = new SendReq();
		    final EncodedStringValue[] sub = EncodedStringValue.extract(subject);
		    if (sub != null && sub.length > 0) {
		    	sendRequest.setSubject(sub[0]);
		    }
		    final EncodedStringValue[] phoneNumbers = EncodedStringValue.extract(recipient);
		    if (phoneNumbers != null && phoneNumbers.length > 0) {
		    	sendRequest.addTo(phoneNumbers[0]);
		    }
		    final PduBody pduBody = new PduBody();
		    final PduPart part = new PduPart();
		    part.setName("sample".getBytes());
		    part.setContentType("image/png".getBytes());
		    String furl = "file://mnt/sdcard//1.jpg";

		    		final PduPart partPdu = new PduPart();
		    		partPdu.setCharset(CharacterSets.UTF_8);//UTF_16
		    		partPdu.setName(part.getName());
		    		partPdu.setContentType(part.getContentType());
		    		partPdu.setDataUri(Uri.parse(furl));
		    		pduBody.addPart(partPdu);   

		    sendRequest.setBody(pduBody);
		    final PduComposer composer = new PduComposer(ctx, sendRequest);
		    final byte[] bytesToSend = composer.make();

		    Thread t = new Thread(new Runnable() {

				@Override
				public void run() {
					try {
						HttpConnectInterface.sendMMS(ctx,  bytesToSend);
//
					} catch (IOException e) {
						e.printStackTrace();
					}
				}
			});
		    t.start();
发送pdu到彩信中心的代码：
        public static String mmscUrl = "http://mmsc.monternet.com";
//	public static String mmscUrl = "http://www.baidu.com/";
	public static String mmsProxy = "10.0.0.172";
	public static String mmsProt = "80";

       private static String HDR_VALUE_ACCEPT_LANGUAGE = "";
    // Definition for necessary HTTP headers.
       private static final String HDR_KEY_ACCEPT = "Accept";
       private static final String HDR_KEY_ACCEPT_LANGUAGE = "Accept-Language";

    private static final String HDR_VALUE_ACCEPT =
        "*/*, application/vnd.wap.mms-message, application/vnd.wap.sic";
public static byte[] sendMMS(Context context, byte[] pdu)throws IOException{
		HDR_VALUE_ACCEPT_LANGUAGE = getHttpAcceptLanguage();

		if (mmscUrl == null) {
            throw new IllegalArgumentException("URL must not be null.");
        }

        HttpClient client = null;
        try {
	        // Make sure to use a proxy which supports CONNECT.
	        client = HttpConnector.buileClient(context);
	        HttpPost post = new HttpPost(mmscUrl);
	        //mms PUD START
	        ByteArrayEntity entity = new ByteArrayEntity(pdu);
			entity.setContentType("application/vnd.wap.mms-message");
	        post.setEntity(entity);
	        post.addHeader(HDR_KEY_ACCEPT, HDR_VALUE_ACCEPT);
	        post.addHeader(HDR_KEY_ACCEPT_LANGUAGE, HDR_VALUE_ACCEPT_LANGUAGE);
	        //mms PUD END
	        HttpParams params = client.getParams();
	        HttpProtocolParams.setContentCharset(params, "UTF-8");
	        HttpResponse response = client.execute(post);

			LogUtility.showLog(tag, "111");
	        StatusLine status = response.getStatusLine();
	        LogUtility.showLog(tag, "status "+status.getStatusCode());
	        if (status.getStatusCode() != 200) { // HTTP 200 is not success.
            	LogUtility.showLog(tag, "!200");
                throw new IOException("HTTP error: " + status.getReasonPhrase());
            }
	        HttpEntity resentity = response.getEntity();
            byte[] body = null;
            if (resentity != null) {
                try {
                    if (resentity.getContentLength() > 0) {
                        body = new byte[(int) resentity.getContentLength()];
                        DataInputStream dis = new DataInputStream(resentity.getContent());
                        try {
                            dis.readFully(body);
                        } finally {
                            try {
                                dis.close();
                            } catch (IOException e) {
                                Log.e(tag, "Error closing input stream: " + e.getMessage());
                            }
                        }
                    }
                } finally {
                    if (entity != null) {
                        entity.consumeContent();
                    }
                }
            }
            LogUtility.showLog(tag, "result:"+new String(body));
            return body;
		}  catch (IllegalStateException e) {
			LogUtility.showLog(tag, "",e);
//            handleHttpConnectionException(e, mmscUrl);
        } catch (IllegalArgumentException e) {
        	LogUtility.showLog(tag, "",e);
//            handleHttpConnectionException(e, mmscUrl);
        } catch (SocketException e) {
        	LogUtility.showLog(tag, "",e);
//            handleHttpConnectionException(e, mmscUrl);
        } catch (Exception e) {
        	LogUtility.showLog(tag, "",e);
        	//handleHttpConnectionException(e, mmscUrl);
        } finally {
            if (client != null) {
//                client.;
            }
        }
		return new byte[0];
	}

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至此，彩信的发送算是完成了。

总结：android的彩信相关操作都是没有api的，包括彩信的读取、发送、存储。这些过程都是需要手动去完成的。想要弄懂这些过程，需要仔细阅读android源码中的mms这个app。还有就是去研究mmssms.db数据库，因为彩信的读取和存储其实都是对mmssms.db这个数据库的操作过程。而且因为这个是共享的数据库，所以只能用ContentProvider这个组件去操作db。

总之，想要研究彩信这块(包括普通短信)，你就必须的研究mmssms.db的操作方法，多多了解每个表对应的哪个uri，每个uri能提供什么样的操作，那些字段代表短信的那些属性等。

最后推荐个好用的sqlite查看工具：SQLite Database Browser。