我有使用SpeechRecognizer实现SpeechRecognization的服务类。有一个广播接收器类，它将在事件发生时启动该服务。然后SpeechRecognizer将开始收听服务。
我在执行此过程时遇到了运行时异常。
01-28 09:15:09.601: E/JavaBinder(23476): *** Uncaught remote exception! (Exceptions are not yet supported across processes.)
01-28 09:15:09.601: E/JavaBinder(23476): java.lang.RuntimeException: SpeechRecognizer should be used only from the application's main thread
01-28 09:15:09.601: E/JavaBinder(23476): at android.speech.SpeechRecognizer.checkIsCalledFromMainThread(SpeechRecognizer.java:319)
01-28 09:15:09.601: E/JavaBinder(23476): at android.speech.SpeechRecognizer.startListening(SpeechRecognizer.java:260)
01-28 09:15:09.601: E/JavaBinder(23476): at com.reader.MainSpeakerService.startRecognization(MainSpeakerService.java:181)
01-28 09:15:09.601: E/JavaBinder(23476): at com.reader.MainSpeakerService.onUtteranceCompleted(MainSpeakerService.java:255)
01-28 09:15:09.601: E/JavaBinder(23476): at android.speech.tts.UtteranceProgressListener$1.onDone(UtteranceProgressListener.java:57)
01-28 09:15:09.601: E/JavaBinder(23476): at android.speech.tts.TextToSpeech$Connection$1.onDone(TextToSpeech.java:1443)
01-28 09:15:09.601: E/JavaBinder(23476): at android.speech.tts.ITextToSpeechCallback$Stub.onTransact(ITextToSpeechCallback.java:63)
01-28 09:15:09.601: E/JavaBinder(23476): at android.os.Binder.execTransact(Binder.java:388)
01-28 09:15:09.601: E/JavaBinder(23476): at dalvik.system.NativeStart.run(Native Method)
根据android doc，the service uses your application's main thread。该服务在主线程上运行。我很困惑为什么在服务中发生这种异常。