About modifying the volume of your Android phone

First, you must obtain the system's sound service permissions

<android:name= "Android.permission.MODIFY_AUDIO_SETTINGS"/>

Then it's the variable that declares the control sound.

// Call Volume

You can then use the get and set methods of the Audomanager to get the sound and set the sound.

current =// Get Music volume   current = Maudiomanager.getstreamvolume (   Audiomanager.stream_music);   /* Set volume function public  void setstreamvolume (int streamtype, int index, int flags)         * Parameter description:          * streamtype for ringtone type, For example: Audiomanager.stream_voice_call, Audiomanager.stream_system, etc.,         *          * Index for volume size         *          * FALGS for flag bit, Generally set to 0 on it, feel no impact           */0, 0);

About modifying the volume of your Android phone