项目场景：
安卓版本：Android 13；
Gradle版本： gradle-6.7.1
问题描述
在初始化Visualizer时报错如下：
java.lang.RuntimeException: Cannot initialize Visualizer engine, error: -3
at android.media.audiofx.Visualizer.(Visualizer.java:238)
at com.xx.mediarender.player.MusicPlayEngineImpl.reInitVisualizer(MusicPlayEngineImpl.java:48)
at ncom.xx.mediarender.player.MusicPlayEngineImpl.prepareComplete(MusicPlayEngineImpl.java:137)
at com.xx.mediarender.player.AbstractMediaPlayEngine.onPrepared(AbstractMediaPlayEngine.java:122)
at android.media.MediaPlayer E v e n t H a n d l e r . h a n d l e M e s s a g e ( M e d i a P l a y e r . j a v a : 3984 ) a t a n d r o i d . o s . H a n d l e r . d i s p a t c h M e s s a g e ( H a n d l e r . j a v a : 106 ) a t a n d r o i d . o s . L o o p e r . l o o p O n c e ( L o o p e r . j a v a : 226 ) a t a n d r o i d . o s . L o o p e r . l o o p ( L o o p e r . j a v a : 313 ) a t a n d r o i d . a p p . A c t i v i t y T h r e a d . m a i n ( A c t i v i t y T h r e a d . j a v a : 8582 ) a t j a v a . l a n g . r e f l e c t . M e t h o d . i n v o k e ( N a t i v e M e t h o d ) a t c o m . a n d r o i d . i n t e r n a l . o s . R u n t i m e I n i t EventHandler.handleMessage(MediaPlayer.java:3984) at android.os.Handler.dispatchMessage(Handler.java:106) at android.os.Looper.loopOnce(Looper.java:226) at android.os.Looper.loop(Looper.java:313) at android.app.ActivityThread.main(ActivityThread.java:8582) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit EventHandler.handleMessage(MediaPlayer.java:3984)atandroid.os.Handler.dispatchMessage(Handler.java:106)atandroid.os.Looper.loopOnce(Looper.java:226)atandroid.os.Looper.loop(Looper.java:313)atandroid.app.ActivityThread.main(ActivityThread.java:8582)atjava.lang.reflect.Method.invoke(NativeMethod)atcom.android.internal.os.RuntimeInitMethodAndArgsCaller.run(RuntimeInit.java:563)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1133)
解决方案：
Android 6.0以后的版本，使用Visualizer需要开启App的麦克风权限。