iOS Audioqueuestart returns-50 recording failure issue

iOS Audioqueuestart returns-50 recording failure issue

When using iOS recording, this problem may occur if there is a voice operation elsewhere in the app;

Cause the Recorder to open failed! Cannot record, and

Audioqueuestart () returned the error code-50

How to Solve

Call the following code before calling the Audioqueuestart () method

    Avaudiosession * session = [avaudiosession sharedinstance];    if (!session) printf ("ERROR INITIALIZING AUDIO session! \ n ");    else{                nserror *nserror = nil;        [Session Setcategory:avaudiosessioncategoryplayandrecord error:&nserror];                if (nserror) printf ("couldn ' t set audio category!");        [Session Setactive:yes error:&nserror];        if (nserror) printf ("Audiosession setActive = YES failed");    }

　　

Reference: HTTP://STACKOVERFLOW.COM/QUESTIONS/12650263/AUDIO-QUEUE-AUDIOQUEUESTART-RETURNS-50

iOS Audioqueuestart returns-50 recording failure issue