Android App之Email浅析
来源：互联网 发布：电影资源采集站源码 编辑：程序博客网 时间：2024/06/05 20:40
Base on Android4.2.1
以下不保证正确性，仅供娱乐参考。
Email的概念层次图，可以对Email有个宏观的了解（pop端口一般是995，而smtp一般是465）。
代码部分，定位到java层次
packages/apps/Email/src/com/android/email
各个部分的代码作用区域大概就是这些了，有些时候其实看UML图比我说千百遍都来的很好理解
回归到最早期的email，是通过发送指令下达消息的，具体可以参考文章后面的链接，上文提到的transport文件夹是用来处理通信的，找到smtpSender.java文件，里面有一段代码用来发送email data以及cc bc等，而其他的java只是做了些用户交互的东西。
Java
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...
try{
executeSimpleCommand("MAIL FROM: "+ "<"+ from.getAddress()+ ">");
for(Address address: to){
executeSimpleCommand("RCPT TO: "+ "<"+ address.getAddress()+ ">");
}
for(Address address: cc){
executeSimpleCommand("RCPT TO: "+ "<"+ address.getAddress()+ ">");
}
for(Address address: bcc){
executeSimpleCommand("RCPT TO: "+ "<"+ address.getAddress()+ ">");
}
executeSimpleCommand("DATA");
...
接下来从总体架构看下email的消息走向先从setupxxx.java配置账户，在此注意xml的解偶作用，随后Controller把消息传送到messagingController，注意这是一个死循环的Thread，内置一个Queue消息队列，接下来就是一些异步Task和监听的Listener 回掉，总感觉还是看图方便，希望这个图能让大家看懂。
其中synchronizeMailboxGeneric中操作比较多，下面列一下，英文的，看不懂拉倒。 
- Get the message list from the local store and create an index of the uids
- Open the remote folder and create the remote folder if necessary
- Open the remote folder. This pre-loads certain metadata like message count
- Trash any remote messages that are marked as trashed locally
- Get the remote message count
- Determine the limit # of messages to download
- Create a list of messages to download
- Download basic info about the new/unloaded messages (if any)
- Refresh the flags for any messages in the local store that we didn’t just download
- Remove any messages that are in the local store but no longer on the remote store
- Clean up and report results
在多个账户同时接收邮件的过程中常常遇到多个线程的交互，这样就必须用到锁机制，随便搜索了下，大多数是些读写操作，这也很符合PV操作的概念，凑合看下吧，可能以后会做详细解释。
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----synchronized Matches(231 in 56files) ----
AccountServerBaseFragment.java( ...\email\src\com\android\email\activity\setup): publicstatic synchronizedBundle getSettingsModeArgs(LongaccountID) {
AccountSetupOptions.java( ...\email\src\com\android\email\activity\setup): synchronized(mCommitQueueLock){
AccountSetupOptions.java( ...\email\src\com\android\email\activity\setup): synchronized(mCommitQueueLock){
AttachmentDownloadService.java( ...\email\src\com\android\email\service): * synchronizedon the map itself
AttachmentDownloadService.java( ...\email\src\com\android\email\service): publicsynchronized voidonChange(Contextcontext, Attachment att){
AttachmentDownloadService.java( ...\email\src\com\android\email\service): /*package*/synchronized DownloadRequest findDownloadRequest(longid) {
AttachmentDownloadService.java( ...\email\src\com\android\email\service): publicsynchronized booleanisEmpty(){
AttachmentDownloadService.java( ...\email\src\com\android\email\service): /*package*/synchronized voidprocessQueue(){
AttachmentDownloadService.java( ...\email\src\com\android\email\service): /*package*/synchronized intdownloadsForAccount(longaccountId) {
AttachmentDownloadService.java( ...\email\src\com\android\email\service): /*package*/synchronized booleantryStartDownload(DownloadRequestreq) {
AttachmentDownloadService.java( ...\email\src\com\android\email\service): privatesynchronized DownloadRequest getDownloadInProgress(longattachmentId){
AttachmentDownloadService.java( ...\email\src\com\android\email\service): /*package*/synchronized voidendDownload(longattachmentId,int statusCode){
AttachmentDownloadService.java( ...\email\src\com\android\email\service): synchronized(mLock){
AttachmentDownloadService.java( ...\email\src\com\android\email\service): privatesynchronized Intent getServiceIntentForAccount(longaccountId) {
AttachmentDownloadService.java( ...\email\src\com\android\email\service): synchronized(mLock){
AttachmentDownloadService.java( ...\email\src\com\android\email\service): synchronized(mConnectivityManagerLock){
AttachmentDownloadService.java( ...\email\src\com\android\email\service): synchronized(mConnectivityManagerLock){
AttachmentDownloadService.java( ...\email\src\com\android\email\service): synchronized(mDownloadSet){
ByteArrayOutputStream.java( ...\email\emailcommon\src\org\apache\commons\io\output): synchronized(this){
ByteArrayOutputStream.java( ...\email\emailcommon\src\org\apache\commons\io\output): publicsynchronized voidwrite(intb) {
ByteArrayOutputStream.java( ...\email\emailcommon\src\org\apache\commons\io\output): publicsynchronized intwrite(InputStreamin) throws IOException{
ByteArrayOutputStream.java( ...\email\emailcommon\src\org\apache\commons\io\output): publicsynchronized intsize(){
ByteArrayOutputStream.java( ...\email\emailcommon\src\org\apache\commons\io\output): publicsynchronized voidreset(){
ByteArrayOutputStream.java( ...\email\emailcommon\src\org\apache\commons\io\output): publicsynchronized voidwriteTo(OutputStreamout) throws IOException{
ByteArrayOutputStream.java( ...\email\emailcommon\src\org\apache\commons\io\output): publicsynchronized byte[]toByteArray(){
CloseShieldInputStream.java( ...\email\emailcommon\src\org\apache\james\mime4j): publicsynchronized voidreset()throws IOException{
CloseShieldInputStream.java( ...\email\emailcommon\src\org\apache\james\mime4j): publicsynchronized voidmark(intreadlimit) {
ContentCache.java( ...\email\src\com\android\email\provider):* Synchronizationnote: All of the publicmethods in ContentCache are synchronized(i.e.on the
ContentCache.java( ...\email\src\com\android\email\provider): * Asynchronized reference counterfor arbitraryobjects
ContentCache.java( ...\email\src\com\android\email\provider): /*package*/synchronized intsubtract(Tobject) {
ContentCache.java( ...\email\src\com\android\email\provider): /*package*/synchronized voidadd(Tobject) {
ContentCache.java( ...\email\src\com\android\email\provider): /*package*/synchronized booleancontains(Tobject) {
ContentCache.java( ...\email\src\com\android\email\provider): /*package*/synchronized intgetCount(Tobject) {
ContentCache.java( ...\email\src\com\android\email\provider): synchronizedint size(){
ContentCache.java( ...\email\src\com\android\email\provider): synchronizedSet<HashMap.Entry<T,Integer>> entrySet(){
ContentCache.java( ...\email\src\com\android\email\provider): synchronized(mCache){
ContentCache.java( ...\email\src\com\android\email\provider): publicsynchronized CacheToken getCacheToken(Stringid) {
ContentCache.java( ...\email\src\com\android\email\provider): publicsynchronized Cursor putCursorImpl(Cursorc, Stringid, String[]projection,
ContentCache.java( ...\email\src\com\android\email\provider): publicsynchronized Cursor getCachedCursor(Stringid, String[]projection){
ContentCache.java( ...\email\src\com\android\email\provider): publicsynchronized voidlock(Stringid) {
ContentCache.java( ...\email\src\com\android\email\provider): publicsynchronized voidunlock(Stringid) {
ContentCache.java( ...\email\src\com\android\email\provider): publicsynchronized voidunlock(Stringid, ContentValues values){
ContentCache.java( ...\email\src\com\android\email\provider): publicsynchronized voidinvalidate(){
ContentCache.java( ...\email\src\com\android\email\provider): publicsynchronized voidinvalidate(Stringoperation, Uri uri,String selection){
ContentCache.java( ...\email\src\com\android\email\provider): publicstatic synchronizedvoid notCacheable(Uriuri, String selection){
Controller.java( ...\email\src\com\android\email): publicsynchronized staticController getInstance(Context_context) {
Controller.java( ...\email\src\com\android\email): publicsynchronized staticvoid injectMockControllerForTest(ControllermockController){
Controller.java( ...\email\src\com\android\email): synchronized(mListeners){
Controller.java( ...\email\src\com\android\email): synchronized(mListeners){
Controller.java( ...\email\src\com\android\email): // synchronized (mListeners) {
Controller.java( ...\email\src\com\android\email): * Synchronizedso multiple threadscan call it(and not risk creatingduplicate boxes).
Controller.java( ...\email\src\com\android\email): publicsynchronized longfindOrCreateMailboxOfType(longaccountId, int mailboxType){
Controller.java( ...\email\src\com\android\email): synchronized(mListeners){
Controller.java( ...\email\src\com\android\email): synchronized(mListeners){
Controller.java( ...\email\src\com\android\email): synchronized(mListeners){
Controller.java( ...\email\src\com\android\email): synchronized(mListeners){
Controller.java( ...\email\src\com\android\email): synchronized(mListeners){
Controller.java( ...\email\src\com\android\email): synchronized(mListeners){
Controller.java( ...\email\src\com\android\email): synchronized(mListeners){
Controller.java( ...\email\src\com\android\email): synchronized(mListeners){
Controller.java( ...\email\src\com\android\email): synchronized(mListeners){
Controller.java( ...\email\src\com\android\email): synchronized(mListeners){
Controller.java( ...\email\src\com\android\email): synchronized(mListeners){
Controller.java( ...\email\src\com\android\email): synchronized(mListeners){
Controller.java( ...\email\src\com\android\email): synchronized(mListeners){
Controller.java( ...\email\src\com\android\email): synchronized(mListeners){
Controller.java( ...\email\src\com\android\email): synchronized(mListeners){
Controller.java( ...\email\src\com\android\email): synchronized(mListeners){
Controller.java( ...\email\src\com\android\email): synchronized(mListeners){
Controller.java( ...\email\src\com\android\email): synchronizedpublic voidsendPendingMessagesStarted(longaccountId, long messageId){
Controller.java( ...\email\src\com\android\email): synchronized(mListeners){
Controller.java( ...\email\src\com\android\email): synchronizedpublic voidsendPendingMessagesCompleted(longaccountId) {
Controller.java( ...\email\src\com\android\email): synchronized(mListeners){
Controller.java( ...\email\src\com\android\email): synchronizedpublic voidsendPendingMessagesFailed(longaccountId, long messageId,
Controller.java( ...\email\src\com\android\email): synchronized(mListeners){
Controller.java( ...\email\src\com\android\email): synchronized(mListeners){
Controller.java( ...\email\src\com\android\email): synchronized(mListeners){
Controller.java( ...\email\src\com\android\email): synchronized(mListeners){
Controller.java( ...\email\src\com\android\email): synchronized(mListeners){
Controller.java( ...\email\src\com\android\email): synchronized(mListeners){
Controller.java( ...\email\src\com\android\email): privatesynchronized voidbroadcastCallback(ServiceCallbackWrapperwrapper) {
CountingInputStream.java( ...\email\emailcommon\src\org\apache\commons\io\input): publicsynchronized intgetCount(){
CountingInputStream.java( ...\email\emailcommon\src\org\apache\commons\io\input): publicsynchronized intresetCount(){
CountingInputStream.java( ...\email\emailcommon\src\org\apache\commons\io\input): publicsynchronized longgetByteCount(){
CountingInputStream.java( ...\email\emailcommon\src\org\apache\commons\io\input): publicsynchronized longresetByteCount(){
CountingOutputStream.java( ...\email\emailcommon\src\org\apache\commons\io\output): publicsynchronized intgetCount(){
CountingOutputStream.java( ...\email\emailcommon\src\org\apache\commons\io\output): publicsynchronized intresetCount(){
CountingOutputStream.java( ...\email\emailcommon\src\org\apache\commons\io\output): publicsynchronized longgetByteCount(){
CountingOutputStream.java( ...\email\emailcommon\src\org\apache\commons\io\output): publicsynchronized longresetByteCount(){
Device.java( ...\email\emailcommon\src\com\android\emailcommon): staticpublic synchronizedString getDeviceId(Contextcontext) throws IOException{
Email.java( ...\email\src\com\android\email): publicstatic synchronizedvoid setNotifyUiAccountsChanged(booleansetFlag) {
Email.java( ...\email\src\com\android\email): publicstatic synchronizedboolean getNotifyUiAccountsChanged(){
EmailAsyncTask.java( ...\email\emailcommon\src\com\android\emailcommon\utility): synchronized(mTasks){
EmailAsyncTask.java( ...\email\emailcommon\src\com\android\emailcommon\utility): synchronized(mTasks){
EmailAsyncTask.java( ...\email\emailcommon\src\com\android\emailcommon\utility): synchronized(mTasks){
EmailAsyncTask.java( ...\email\emailcommon\src\com\android\emailcommon\utility): synchronized(mTasks){
EmailClientConnectionManager.java( ...\email\emailcommon\src\com\android\emailcommon\utility): publicsynchronized voidregisterClientCert(
EmailClientConnectionManager.java( ...\email\emailcommon\src\com\android\emailcommon\utility): publicsynchronized voidunregisterClientCert(
EmailClientConnectionManager.java( ...\email\emailcommon\src\com\android\emailcommon\utility): publicsynchronized booleanhasDetectedUnsatisfiedCertReq(longsince) {
EmailConnectivityManager.java( ...\email\src\com\android\email): synchronized(mLock){
EmailConnectivityManager.java( ...\email\src\com\android\email): synchronized(mLock){
EmailExternalUtils.java( ...\email\emailcommon\src\com\android\emailcommon\service): synchronized(sUpdateCountMap){
EmailExternalUtils.java( ...\email\emailcommon\src\com\android\emailcommon\service): synchronized(sUpdateCountMap){
EmailProvider.java( ...\email\src\com\android\email\provider): synchronizedSQLiteDatabase getDatabase(Contextcontext) {
EmailProvider.java( ...\email\src\com\android\email\provider): synchronized(mMailboxTypeMap){
EmailProvider.java( ...\email\src\com\android\email\provider): synchronized(mMailboxTypeMap){
EmailProvider.java( ...\email\src\com\android\email\provider): synchronized(mMailboxTypeMap){
EmailProvider.java( ...\email\src\com\android\email\provider): synchronized(mMailboxTypeMap){
EmailProvider.java( ...\email\src\com\android\email\provider): synchronized(mMailboxTypeMap){
EmailWidget.java( ...\email\src\com\android\email\widget): synchronized(this){
EmailWidget.java( ...\email\src\com\android\email\widget): synchronized(this){
EmailWidget.java( ...\email\src\com\android\email\widget): publicsynchronized RemoteViews getViewAt(intposition) {
FileCleaner.java( ...\email\emailcommon\src\org\apache\commons\io): publicstatic synchronizedvoid exitWhenFinished(){
FileCleaningTracker.java( ...\email\emailcommon\src\org\apache\commons\io): finalCollection<Tracker>/* Tracker */ trackers= newVector<Tracker>(); // synchronized
FileCleaningTracker.java( ...\email\emailcommon\src\org\apache\commons\io): privatesynchronized voidaddTracker(Stringpath, Object marker,FileDeleteStrategy deleteStrategy){
FileCleaningTracker.java( ...\email\emailcommon\src\org\apache\commons\io): // synchronized block protects reaper
FileCleaningTracker.java( ...\email\emailcommon\src\org\apache\commons\io): publicsynchronized voidexitWhenFinished(){
FileCleaningTracker.java( ...\email\emailcommon\src\org\apache\commons\io): // synchronized block protects reaper
FileCleaningTracker.java( ...\email\emailcommon\src\org\apache\commons\io): synchronized(reaper){
FolderProperties.java( ...\email\src\com\android\email): publicstatic synchronizedFolderProperties getInstance(Contextcontext) {
FolderProperties.java( ...\email\src\com\android\email): publicstatic synchronizedvoid removeInstance(){
GroupMessagingListener.java( ...\email\src\com\android\email): Nevertheless,let's keep the "synchronized"for awhile inthe case
GroupMessagingListener.java( ...\email\src\com\android\email): synchronizedpublic voidaddListener(MessagingListenerlistener) {
GroupMessagingListener.java( ...\email\src\com\android\email): synchronizedpublic voidremoveListener(MessagingListenerlistener) {
GroupMessagingListener.java( ...\email\src\com\android\email): synchronizedpublic booleanisActiveListener(MessagingListenerlistener) {
GroupMessagingListener.java( ...\email\src\com\android\email): synchronizedpublic voidlistFoldersStarted(longaccountId) {
GroupMessagingListener.java( ...\email\src\com\android\email): synchronizedpublic voidlistFoldersFailed(longaccountId, String message){
GroupMessagingListener.java( ...\email\src\com\android\email): synchronizedpublic voidlistFoldersFinished(longaccountId) {
GroupMessagingListener.java( ...\email\src\com\android\email): synchronizedpublic voidsynchronizeMailboxStarted(longaccountId, long mailboxId){
GroupMessagingListener.java( ...\email\src\com\android\email): synchronizedpublic voidsynchronizeEnvelopeFinished(longaccountId, long mailboxId){
GroupMessagingListener.java( ...\email\src\com\android\email): synchronizedpublic voidsynchronizeMailboxFinished(longaccountId, long mailboxId,
GroupMessagingListener.java( ...\email\src\com\android\email): synchronizedpublic voidsynchronizeMailboxFailed(longaccountId, long mailboxId,Exception e){
GroupMessagingListener.java( ...\email\src\com\android\email): synchronizedpublic voidloadMessageForViewStarted(longmessageId) {
GroupMessagingListener.java( ...\email\src\com\android\email): synchronizedpublic voidloadMessageForViewFinished(longmessageId) {
GroupMessagingListener.java( ...\email\src\com\android\email): synchronizedpublic voidloadMessageForViewFailed(longmessageId, String message){
GroupMessagingListener.java( ...\email\src\com\android\email): synchronizedpublic voidcheckMailStarted(Contextcontext, long accountId,long tag){
GroupMessagingListener.java( ...\email\src\com\android\email): synchronizedpublic voidcheckMailFinished(Contextcontext, long accountId,long folderId,
GroupMessagingListener.java( ...\email\src\com\android\email): synchronizedpublic voidsendPendingMessagesStarted(longaccountId, long messageId){
GroupMessagingListener.java( ...\email\src\com\android\email): synchronizedpublic voidsendPendingMessagesCompleted(longaccountId) {
GroupMessagingListener.java( ...\email\src\com\android\email): synchronizedpublic voidsendPendingMessagesFailed(longaccountId, long messageId,
GroupMessagingListener.java( ...\email\src\com\android\email): synchronizedpublic voidmessageUidChanged(longaccountId, long mailboxId,
GroupMessagingListener.java( ...\email\src\com\android\email): synchronizedpublic voidloadAttachmentStarted(
GroupMessagingListener.java( ...\email\src\com\android\email): synchronizedpublic voidloadAttachmentFinished(
GroupMessagingListener.java( ...\email\src\com\android\email): synchronizedpublic voidloadAttachmentFailed(
GroupMessagingListener.java( ...\email\src\com\android\email): synchronizedpublic voidcontrollerCommandCompleted(booleanmoreCommandsToRun){
ImapFolder.java( ...\email\src\com\android\email\mail\store): synchronized(this){
ImapFolder.java( ...\email\src\com\android\email\mail\store): synchronized(this){
ImapFolder.java( ...\email\src\com\android\email\mail\store): synchronized(this){
ImapFolder.java( ...\email\src\com\android\email\mail\store): synchronized(this){
ImapResponseParser.java( ...\email\src\com\android\email\mail\store\imap): synchronized(MailService.sSynchronizeLock){
ImapStore.java( ...\email\src\com\android\email\mail\store): synchronized(ImapStore.class){
LegacyConversions.java( ...\email\src\com\android\email): publicstatic synchronizedint inferMailboxTypeFromName(Contextcontext, String mailboxName){
LockableFileWriter.java( ...\email\emailcommon\src\org\apache\commons\io\output): synchronized(LockableFileWriter.class){
MailService.java( ...\email\src\com\android\email\service): * Access must be synchronized,because there areaccesses from theController callback
MailService.java( ...\email\src\com\android\email\service): synchronized(sSynchronizeLock){
MailService.java( ...\email\src\com\android\email\service): synchronized(sSynchronizeLock){
MailService.java( ...\email\src\com\android\email\service): synchronized(mSyncReports){
MailService.java( ...\email\src\com\android\email\service): synchronized(mSyncReports){
MailService.java( ...\email\src\com\android\email\service): synchronized(mSyncReports){
MailService.java( ...\email\src\com\android\email\service): synchronized(mSyncReports){
MailService.java( ...\email\src\com\android\email\service): * Handle the work of setupSyncReports. Mustbe synchronized onmSyncReports.
MailService.java( ...\email\src\com\android\email\service): synchronized(mSyncReports){
MailService.java( ...\email\src\com\android\email\service): synchronized(mSyncReports){
MailTransport.java( ...\email\src\com\android\email\mail\transport): synchronized(MailService.sSynchronizeLock){
MailTransport.java( ...\email\src\com\android\email\mail\transport): synchronized(MailService.sSynchronizeLock){
MessageCompose.java( ...\email\src\com\android\email\activity): synchronized(mDraft){
MessageCompose.java( ...\email\src\com\android\email\activity): synchronized(sActiveSaveTasks){
MessageListFragment.java( ...\email\src\com\android\email\activity): synchronized(MessagesAdapter.mDeletedSet){
MessagesAdapter.java( ...\email\src\com\android\email\activity): publicsynchronized voidsetDeletedSet(Set<Long>set) {
MessagesAdapter.java( ...\email\src\com\android\email\activity): publicsynchronized voidclearDeletion(Set<Long>set) {
MessagesAdapter.java( ...\email\src\com\android\email\activity): synchronized(mDeletedSet){
MessagesAdapter.java( ...\email\src\com\android\email\activity): synchronized(mDeletedSet){
MessageViewFragmentBase.java( ...\email\src\com\android\email\activity): synchronized(mDownloadAttachmentList){
MessageViewFragmentBase.java( ...\email\src\com\android\email\activity): synchronized(mDownloadAttachmentList){
MessageViewFragmentBase.java( ...\email\src\com\android\email\activity): privatesynchronized voiddoLinkParse(Stringtext) {
MessagingController.java( ...\email\src\com\android\email): * All access to mListeners *must*be synchronized
MessagingController.java( ...\email\src\com\android\email): publicsynchronized staticMessagingController getInstance(Context_context,
MessagingController.java( ...\email\src\com\android\email): // they equal we can mark this SYNCHRONIZED instead of PARTIALLY_SYNCHRONIZED
MessagingController.java( ...\email\src\com\android\email): synchronized(this){
MessagingController.java( ...\email\src\com\android\email): synchronized(this){
MessagingController.java( ...\email\src\com\android\email): // We do not synchronized this, because we expect the method poll()
MessagingController.java( ...\email\src\com\android\email):// synchronized (this) {
MessagingController.java( ...\email\src\com\android\email): synchronized(mCancelledAttachments){
MessagingController.java( ...\email\src\com\android\email): synchronized(mCancelledAttachments){
MessagingController.java( ...\email\src\com\android\email): synchronized(mCancelledAttachments){
MessagingListener.java( ...\email\src\com\android\email): * @paramaccountId The accountthat was synchronized
MessagingListener.java( ...\email\src\com\android\email): * @parammailboxId The mailboxthat was synchronized
NotificationController.java( ...\email\src\com\android\email): publicstatic synchronizedNotificationController getInstance(Contextcontext) {
NotificationController.java( ...\email\src\com\android\email): privatestatic synchronizedvoid ensureHandlerExists(){
NotificationController.java( ...\email\src\com\android\email): synchronized(mLock){
NotificationController.java( ...\email\src\com\android\email): synchronized(mLock){
NullInputStream.java( ...\email\emailcommon\src\org\apache\commons\io\input): publicsynchronized voidmark(intreadlimit) {
NullInputStream.java( ...\email\emailcommon\src\org\apache\commons\io\input): publicsynchronized voidreset()throws IOException{
NullReader.java( ...\email\emailcommon\src\org\apache\commons\io\input): publicsynchronized voidmark(intreadlimit) {
NullReader.java( ...\email\emailcommon\src\org\apache\commons\io\input): publicsynchronized voidreset()throws IOException{
Pop3Store.java( ...\email\src\com\android\email\mail\store): publicsynchronized voidopen(OpenModemode) throws MessagingException{
PopImapSyncAdapterService.java( ...\email\src\com\android\email\service): synchronized(sSyncAdapterLock){
Preferences.java( ...\email\src\com\android\email): publicstatic synchronizedPreferences getPreferences(Contextcontext) {
Preferences.java( ...\email\src\com\android\email): publicsynchronized StringgetDeviceUID(){
ProxyInputStream.java( ...\email\emailcommon\src\org\apache\commons\io\input): publicsynchronized voidmark(intidx) {
ProxyInputStream.java( ...\email\emailcommon\src\org\apache\commons\io\input): publicsynchronized voidreset()throws IOException{
ProxyReader.java( ...\email\emailcommon\src\org\apache\commons\io\input): publicsynchronized voidmark(intidx) throws IOException{
ProxyReader.java( ...\email\emailcommon\src\org\apache\commons\io\input): publicsynchronized voidreset()throws IOException{
RecentMailboxManager.java( ...\email\src\com\android\email\activity): publicstatic synchronizedRecentMailboxManager getInstance(Contextcontext) {
RecentMailboxManager.java( ...\email\src\com\android\email\activity): privatesynchronized voidensureDefaultsInitialized(longaccountId, long time){
RefreshManager.java( ...\email\src\com\android\email): publicstatic synchronizedRefreshManager getInstance(Contextcontext) {
ResourceHelper.java( ...\email\src\com\android\email): publicstatic synchronizedResourceHelper getInstance(Contextcontext) {
Rfc822Output.java( ...\email\emailcommon\src\com\android\emailcommon\internet): synchronized(Rfc822Output.class){
SecurityPolicy.java( ...\email\src\com\android\email): publicsynchronized staticSecurityPolicy getInstance(Contextcontext) {
SecurityPolicy.java( ...\email\src\com\android\email): publicsynchronized Policy getAggregatePolicy(){
SecurityPolicy.java( ...\email\src\com\android\email): /* package */ synchronized DevicePolicyManagergetDPM(){
SecurityPolicy.java( ...\email\src\com\android\email): publicsynchronized voidpoliciesUpdated(longaccountId) {
Sender.java( ...\email\src\com\android\email\mail): publicsynchronized staticSender getInstance(Contextcontext, Account account)
ServiceProxy.java( ...\email\emailcommon\src\com\android\emailcommon\service): synchronized(mConnection){
ServiceProxy.java( ...\email\emailcommon\src\com\android\emailcommon\service): synchronized(mConnection){
SetupData.java( ...\email\src\com\android\email\activity\setup): publicstatic synchronizedSetupData getInstance(){
SetupData.java( ...\email\src\com\android\email\activity\setup): staticpublic synchronizedSetupData restore(Bundlebundle) {
SimpleTempStorage.java( ...\email\emailcommon\src\org\apache\james\mime4j\util): synchronized(this){
SSLUtils.java( ...\email\emailcommon\src\com\android\emailcommon\utility): publicsynchronized staticSSLCertificateSocketFactory getSSLSocketFactory(
Store.java( ...\email\src\com\android\email\mail): publicsynchronized staticStore getInstance(Accountaccount, Context context)
Store.java( ...\email\src\com\android\email\mail): publicsynchronized staticStore removeInstance(Accountaccount, Context context)
TeeOutputStream.java( ...\email\emailcommon\src\org\apache\commons\io\output): publicsynchronized voidwrite(byte[]b) throwsIOException {
TeeOutputStream.java( ...\email\emailcommon\src\org\apache\commons\io\output): publicsynchronized voidwrite(byte[]b, intoff, int len)throws IOException{
TeeOutputStream.java( ...\email\emailcommon\src\org\apache\commons\io\output): publicsynchronized voidwrite(intb) throwsIOException {
UnboundedFifoByteBuffer.java( ...\email\emailcommon\src\org\apache\james\mime4j\decoder):* Note that this implementationis notsynchronized. Thefollowing can be
UnboundedFifoByteBuffer.java( ...\email\emailcommon\src\org\apache\james\mime4j\decoder):* used to provide synchronized access toyour <code>UnboundedFifoByteBuffer</code>:
WidgetManager.java( ...\email\src\com\android\email\widget): publicsynchronized voidcreateWidgets(Contextcontext, int[]widgetIds) {
WidgetManager.java( ...\email\src\com\android\email\widget): publicsynchronized voiddeleteWidgets(Contextcontext, int[]widgetIds) {
WidgetManager.java( ...\email\src\com\android\email\widget): publicsynchronized voidupdateWidgets(Contextcontext, int[]widgetIds) {
WidgetManager.java( ...\email\src\com\android\email\widget): publicsynchronized voidupdateAllEmailWidgets(Contextcontext) {
WidgetManager.java( ...\email\src\com\android\email\widget): publicsynchronized EmailWidget getOrCreateWidget(Contextcontext, int widgetId){
接下来看看数据库的db文件，从里面挑选了几个比较常用的Table，account存储账户信息，mailbox对应邮件文件夹，message对应的是邮件正文。
Transact-SQL
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BEGINTRANSACTION;
insertinto <account>("_id","displayName","emailAddress","syncKey", "syncLookback", "syncInterval", "hostAuthKeyRecv","hostAuthKeySend","flags", "isDefault", "compatibilityUuid","senderName","ringtoneUri","protocolVersion","newMessageCount","securityFlags","securitySyncKey","signature","policyKey","notifiedMessageId","notifiedMessageCount")
values('3','archcodevxxx@163.com','archcodevxxx@163.com',NULL, '-1', '15','5', '6', '2057','0', 'cd4354ba-03c2-4089-8f42-61abec9c1744','archcodev','content://settings/system/notification_sound',NULL, '0', NULL,NULL, NULL, '0','0', '0');
insertinto <mailbox>("_id","displayName","serverId","parentServerId","parentKey","accountKey","type", "delimiter", "syncKey", "syncLookback", "syncInterval", "syncTime", "unreadCount", "flagVisible", "flags", "visibleLimit","syncStatus","messageCount","lastSeenMessageKey","lastTouchedTime")
values('17','已发送', '已发送', NULL,'-1', '3', '5','47', NULL, '0','0', '0', '0','1', '24', '25',NULL, '0', '0','1368427825017');
insertinto <message>("_id","syncServerId","syncServerTimeStamp","displayName","timeStamp","subject", "flagRead", "flagLoaded", "flagFavorite", "flagAttachment", "flags", "clientId","messageId","mailboxKey","accountKey","fromList","toList", "ccList", "bccList","replyToList","meetingInfo","snippet", "protocolSearchInfo","size")
values('78','1319384458','1357011679000','Postmaster@163.com','1357011678000','系统退信', '1', '2','0', '0', '0',NULL, '<50E25ADE.7D4E04.17696@163smtp12>','25', '3', 'Postmaster@163.com','archcodevxxx@163.com','', '', '',NULL, '抱歉，您的邮件被退回来了…… 原邮件信息： 时 间： 2012-12-31 11:27:34 主 题： 回复: 验证金山快盘邮箱，免费获取1G空间 收件人： kuaipan@wps.cn 抄 送： xxx 密 送： yyy 退信原因： 您可能写了外星人的邮件地址；或者是网络不给力，我们无法与收信方联络上。 英文说明:Can not connect to wps.cn:114.112.66.62:2',NULL, '13427');
COMMIT;
Android 3.0为了适配平板加入了Fragement的概念，下面以MessageListFragement为例子，看下消息是如何从view传到database的？本人比较关注结构方面，有点小建筑控
，先看下这个类的结构，其中implements4个package外的接口，然后内部定义了2个接口
关注一个接口回掉的方法，下面是类图，简单解释下，当点击onclick（）的时候调用回掉接口中定义的内容，其中getTargetFragment（）的用法比较有趣，和setTargetFragment（）搭配使用。关于callback的使用最早解除是在C中了解到了，他定义了一个接口模板，然后通过内嵌的方式突破权限的限制，使得Class A可以调用Class B的方法，同时能拆开Class AB的耦合，一举两得，不能在google工作也就只能拜读他们的代码咯。
疑问
在有网络时，是否也每次都是从数据库中取数据，换句话说就是先得从网络把数据存储到sqlite，然后再从db中取出显示？
参考
http://www.cnblogs.com/CrazyWill/archive/2006/07/03/441795.html
http://blog.sina.com.cn/s/blog_5d6ee3360100r1my.html
To be Continue…
原创文章，转载请注明： 转载自:-X archcodev
本文链接地址: Android App之Email浅析 && M0.0.6
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