问题
When using Android soundpool/audioTrack, I keep getting the following error:
AudioFlinger could not create track, status: -12
Error creating AudioTrack
Can anyone explain what -12 is? Is it the value of some enum from the source code?
I've seen other questions that deal with error -12 but nowhere conclusively do I see what that constant actually stands for. Does someone know the list of the possible statuses for AudioFlinger? I've also seen error -22 around, but I don't know what that means either.
Answers backed up by source code or documentation would be best, but I'll take any information I can get at this point.
回答1:
-12 is ENOMEM Not enough space
-22 is EINVAL Invalid argument.
These are standard POSIX error codes
回答2:
-12 means that you can not create a track anymore. Android Audio Framework allows only 32 tracks(includes playing/stopped/paused/...) per mixer thread at the same time.
try to remove some apps on background, you can create one.
来源：https://stackoverflow.com/questions/12471979/what-does-status-12-mean-in-android-audiotrack