SetText Value of Current System Volume

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http://stackoverflow.com – i have this code and i would like to set text in the various TextView that says the current volume level. Example: System Volume: 35%. Obviously, this number has to change when I "move" the SeekBar. This is the code. import android.app.AlertDialog; import android.app.AlertDialog.Builder; import android.content.Context; import android.content.DialogInterface; import android.media.AudioManager; import android.os.Bundle; import android.view.View; import android.widget.SeekBar; import android.widget.SeekBar.OnSeekBarChangeListener; import android.widget.TextView; public class Activity_JellyBean (HowTos)