出错的LOG如下：
01-04 04:08:54.457: V/sending_mms_library(10438): error saving mms message 01-04 04:08:54.457: W/System.err(10438): com.google.android.mms.MmsException: unable to update content://mms/1388779734454/part/0 01-04 04:08:54.457: W/System.err(10438): at com.google.android.mms.pdu_alt.PduPersister.persistData(PduPersister.java:798) 01-04 04:08:54.457: W/System.err(10438): at com.google.android.mms.pdu_alt.PduPersister.persistPart(PduPersister.java:759) 01-04 04:08:54.457: W/System.err(10438): at com.google.android.mms.pdu_alt.PduPersister.persist(PduPersister.java:1389) 01-04 04:08:54.457: W/System.err(10438): at com.klinker.android.send_message.Transaction.getBytes(Transaction.java:423) 01-04 04:08:54.457: W/System.err(10438): at com.klinker.android.send_message.Transaction.sendMmsMessage(Transaction.java:309) 01-04 04:08:54.467: W/System.err(10438): at com.klinker.android.send_message.Transaction.sendNewMessage(Transaction.java:140 01-04 04:08:54.497: V/sending_mms_library(10438): still an error saving... :( 01-04 04:08:54.497: W/System.err(10438): java.io.FileNotFoundException: App op not allowed 01-04 04:08:54.497: W/System.err(10438): at android.database.DatabaseUtils.readExceptionWithFileNotFoundExceptionFromParcel(DatabaseUtils.java:146) 01-04 04:08:54.497: W/System.err(10438): at android.content.ContentProviderProxy.openAssetFile(ContentProviderNative.java:611) 01-04 04:08:54.497: W/System.err(10438): at android.content.ContentResolver.openAssetFileDescriptor(ContentResolver.java:922) 01-04 04:08:54.497: W/System.err(10438): at android.content.ContentResolver.openOutputStream(ContentResolver.java:669) 01-04 04:08:54.507: W/System.err(10438): at android.content.ContentResolver.openOutputStream(ContentResolver.java:645) 01-04 04:08:54.507: W/System.err(10438): at com.klinker.android.send_message.Transaction.createPartImage(Transaction.java:1055) 01-04 04:08:54.507: W/System.err(10438): at com.klinker.android.send_message.Transaction.insert(Transaction.java:1020) 01-04 04:08:54.507: W/System.err(10438): at com.klinker.android.send_message.Transaction.getBytes(Transaction.java:429) 01-04 04:08:54.507: W/System.err(10438): at com.klinker.android.send_message.Transaction.sendMmsMessage(Transaction.java:309) 01-04 04:08:54.507: W/System.err(10438): at com.klinker.android.send_message.Transaction.sendNewMessage(Transaction.java:140) 01-04 04:08:54.507: W/System.err(10438): java.lang.IllegalArgumentException: Null message URI. 01-04 04:08:54.517: W/System.err(10438): at com.android.mms.transaction.MmsMessageSender.(MmsMessageSender.java:63) 01-04 04:08:54.517: W/System.err(10438): at com.klinker.android.send_message.Transaction.sendMmsMessage(Transaction.java:312) 01-04 04:08:54.517: W/System.err(10438): at com.klinker.android.send_message.Transaction.sendNewMessage(Transaction.java:140)
出现这个错误的原因，是因为Android 4.4 KitKat上面新的SMS机制，如果有添加，删除短信操作，你的应用必须设置为默认的SMS APP，具体原因可以看我的这篇文章：
http://www.yinqisen.cn/blog-304.html
如果你的android 系统版本 < 4.4则不会有此问题。