RecognitionService.Callback | API reference

RecognitionService.Callback | API reference | Android Developers

public class RecognitionService.Callback
extends Object

This class receives callbacks from the speech recognition service and forwards them to the user. An instance of this class is passed to the RecognitionService.onStartListening(Intent,Callback) method. Recognizers may call these methods on any thread.

Summary

Public methods
`void`	`beginningOfSpeech()` The service should call this method when the user has started to speak.
`void`	`bufferReceived(byte[] buffer)` The service should call this method when sound has been received.
`void`	`endOfSegmentedSession()` The service should call this method to end a segmented session.
`void`	`endOfSpeech()` The service should call this method after the user stops speaking.
`void`	`error(int error)` The service should call this method when a network or recognition error occurred.
`AttributionSource`	`getCallingAttributionSource()` Gets the permission identity of the calling app.
`int`	`getCallingUid()` Return the Linux uid assigned to the process that sent you the current transaction that is being processed.
`void`	`languageDetection(Bundle results)` The service should call this method when the language detection (and switching) results are available.
`void`	`partialResults(Bundle partialResults)` The service should call this method when partial recognition results are available.
`void`	`readyForSpeech(Bundle params)` The service should call this method when the endpointer is ready for the user to start speaking.
`void`	`results(Bundle results)` The service should call this method when recognition results are ready.
`void`	`rmsChanged(float rmsdB)` The service should call this method when the sound level in the audio stream has changed.
`void`	`segmentResults(Bundle results)` The service should call this method for each ready segment of a long recognition session.

Inherited methods

From class java.lang.Object

`Object`	`clone()` Creates and returns a copy of this object.
`boolean`	`equals(Object obj)` Indicates whether some other object is "equal to" this one.
`void`	`finalize()` Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
`final Class<?>`	`getClass()` Returns the runtime class of this `Object`.
`int`	`hashCode()` Returns a hash code value for the object.
`final void`	`notify()` Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()` Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()` Returns a string representation of the object.
`final void`	`wait(long timeoutMillis, int nanos)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait(long timeoutMillis)` Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait()` Causes the current thread to wait until it is awakened, typically by being notified or interrupted.

Public methods

beginningOfSpeech

public void beginningOfSpeech ()

The service should call this method when the user has started to speak.

Throws
`RemoteException`

bufferReceived

public void bufferReceived (byte[] buffer)

The service should call this method when sound has been received. The purpose of this function is to allow giving feedback to the user regarding the captured audio.

Parameters
`buffer`	`byte`: a buffer containing a sequence of big-endian 16-bit integers representing a single channel audio stream. The sample rate is implementation dependent.

Throws
`RemoteException`

endOfSegmentedSession

public void endOfSegmentedSession ()

The service should call this method to end a segmented session.

Throws
`RemoteException`

endOfSpeech

public void endOfSpeech ()

The service should call this method after the user stops speaking.

Throws
`RemoteException`

getCallingUid

public int getCallingUid ()

Return the Linux uid assigned to the process that sent you the current transaction that is being processed. This is obtained from Binder.getCallingUid().

Returns
`int`

readyForSpeech

public void readyForSpeech (Bundle params)

The service should call this method when the endpointer is ready for the user to start speaking.

Parameters
`params`	`Bundle`: parameters set by the recognition service. Reserved for future use.

Throws
`RemoteException`

rmsChanged

public void rmsChanged (float rmsdB)

The service should call this method when the sound level in the audio stream has changed. There is no guarantee that this method will be called.

Parameters
`rmsdB`	`float`: the new RMS dB value

Throws
`RemoteException`