Open Radar

 
Summary:
When a number of utterances are in an AVSpeechSynthesizer instance’s queue, the stopSpeakingAtBoundary: method is unsuccessful.

There is a workaround, but it shouldn’t be necessary.

Steps to Reproduce:
1. Create an Xcode project.
2. Give the ViewController class an AVSpeechSynthesizer property.
3. Feed the synthesizer a series of AVSpeechUtterance instances.
4. Attempt to stop the queue ***after the first two utterances have been spoken but before the second to last utterance have been spoken*** using -stopSpeakingAtBoundary:.

WORKAROUND:
Just before the -stopSpeakingAtBoundary: call, call -speakUtterance:. This utterance can be as simple as [AVSpeechUtterance speechUtteranceWithString:@""].

Expected Results:
The synthesizer should stop speaking the utterances in its queue.

Actual Results:
The synthesize continues and -stopSpeakingAtBoundary: returns NO.

With the workaround, it works as expected. The workaround should not be necessary.

Version:
iOS 7.0, 7.0.1, 7.0.2, 7.0.3, 7.0.4, 7.1b