when confound app，it save file is error,how confound this lib

[yuxingfafu]

in proguard-rules.pro file ,i write this

-keep class omrecoder.{*;} -dontwarn omrecoder. -keep class cafe.adriel.androidaudiorecorder.{*;} -dontwarn cafe.adriel.androidaudiorecorder. -keep class com.cleveroad.audiovisualization.{*;} -dontwarn com.cleveroad.audiovisualization.

-keep class cafe.adriel.androidaudiorecorder.model.{*;} -dontwarn cafe.adriel.androidaudiorecorder.model.

-keep class com.czt.mp3recorder.{*;} -dontwarn com.czt.mp3recorder. -keep class com.czt.mp3recorder.util.{*;} -dontwarn com.czt.mp3recorder.util. -keep class com.piterwilson.audio.{*;} -dontwarn com.piterwilson.audio. -keep class com.shuyu.waveview.{*;} -dontwarn com.shuyu.waveview.

but it dont work,the record file when saved it is error, could not play