Sets media volume. - Android Media

Android examples for Media:Media Volume

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Description

Sets media volume.

Demo Code


//package com.java2s;
import android.content.Context;
import android.media.AudioManager;

public class Main {
    /**//from ww  w .  ja  va 2s  .  c  o  m
     * Sets media volume.<br>
     * When setting the value of parameter 'volume' greater than the maximum value of the media volume will not either cause error or throw exception but maximize the media volume.<br>
     * Setting the value of volume lower than 0 will minimize the media volume.
     * 
     * @param context Context
     * @param volume volume to be changed
     */
    public static void setVolume(Context context, int volume) {
        adjustMediaVolume(context, volume, 0);
    }

    private static void adjustMediaVolume(Context context, int volume,
            int flag) {
        final int MAX_VOLUME = getMaximumVolume(context);
        final int MIN_VOLUME = 0;

        if (volume < MIN_VOLUME) {
            volume = MIN_VOLUME;
        } else if (volume > MAX_VOLUME) {
            volume = MAX_VOLUME;
        }

        AudioManager audioManager = (AudioManager) context
                .getSystemService(Context.AUDIO_SERVICE);
        if (audioManager != null) {
            audioManager.setStreamVolume(AudioManager.STREAM_MUSIC, volume,
                    flag);
        }
    }

    /** Returns maximum volume the media volume can have
     * 
     * @param context Context
     * @return Maximum volume
     */
    public static int getMaximumVolume(Context context) {
        return ((AudioManager) context
                .getSystemService(Context.AUDIO_SERVICE))
                .getStreamMaxVolume(AudioManager.STREAM_MUSIC);
    }
}

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