android5.1 modify volume keys to bind multimedia sounds

Modify this file in the Frameworks/base/media/java/android/media/audioservice.java function

private int Getactivestreamtype (int suggestedstreamtype) {  
   
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 　　  Else if(Suggestedstreamtype = =Audiomanager.use_default_stream_type) {                /*Carroll Modify Volume key default adjust multimedia volume start*/                /*if (isafmusicactiverecently (streamoverride.sdelayms)) {if (Debug_vol) log.v (TAG, "getactivestre Amtype:forcing stream_music ");*/                    returnAudiosystem.stream_music; /*} else {if (Debug_vol) log.v (TAG, "getactivestreamtype:using stream_n                    Otification as Default ");                return audiosystem.stream_notification; }*/                /*Carroll Modify Volume key default adjust multimedia volume end*/            }             Break; }        if(Debug_vol) LOG.V (TAG,"getactivestreamtype:returning suggested type"+Suggestedstreamtype); returnSuggestedstreamtype; }

After recompiling, press the volume key bar to the multimedia volume

android5.1 modify volume keys to bind multimedia sounds