Develop Reference

Play sound with my volume settings

I'm developing an app that plays some sound according to specific intervals. And I'm letting the user control those sounds volume levels. Tell now it's OK and the sound volume level is as the user selected before. But the problem here that the device volume levels changed too.
The QUESTION is: How to play my sounds at my volume level without affecting the device sound levels?
defaultSharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
AudioManager mAudioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
int streamMaxVolume = mAudioManager.getStreamMaxVolume(3);
vol = defaultSharedPreferences.getInt("vol_one", streamMaxVolume);
mAudioManager.setStreamVolume(3, vol, 0);
playsound();
Update: according to Biraj solution
to get the max allowed volume for each device use the int streamMaxVolume instead of the MAX_VOLUME variable.
so the full answer is:
AudioManager mAudioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
int streamMaxVolume = mAudioManager.getStreamMaxVolume(3);
vol = defaultSharedPreferences.getInt("vol_one", streamMaxVolume);
setVolume(vol);
*
*
*
public void setVolume(int soundVolume){
final float volume = (float) (1 - (Math.log(streamMaxVolume- soundVolume) / Math.log(streamMaxVolume)));
mediaPlayer.setVolume(volume, volume);
}

Don't use AudioManager to setVolume. Use MediaPlayer.setVoume()
private final static int MAX_VOLUME = 100;
public void setVolume(int soundVolume){
final float volume = (float) (1 - (Math.log(MAX_VOLUME - soundVolume) / Math.log(MAX_VOLUME)));
mediaPlayer.setVolume(volume, volume);
}
EXPLANATION :
setVolume (float leftVolume, float rightVolume)
Sets the volume on this player. This API is recommended for balancing the output of audio streams within an application. Unless you are writing an application to control user settings, this API should be used in preference to setStreamVolume(int, int, int) which sets the volume of ALL streams of a particular type. Note that the passed volume values are raw scalars in range 0.0 to 1.0. UI controls should be scaled logarithmically.
Parameters
leftVolume left volume scalar
rightVolume right volume scalar
For more information visit HERE

How to set Soundmanager play volume at ringtone volume?

I am trying to play SoundManager using the following, but it still seams to be using the media volume instead of the ringtone volume. Why?
float streamVolume = mAudioManager.getStreamVolume(AudioManager.STREAM_RING);
streamVolume = streamVolume / mAudioManager.getStreamMaxVolume(AudioManager.STREAM_RING);
mSoundPool.play((Integer) mSoundPoolMap.get(index), streamVolume,streamVolume, 1, 0, speed);

As per Michael, I have to change this in "initSounds" in my SoundManager also. Thanks Michael.

android sound pool not appear

I want to add a sound effect when a user clicks on a button.
I tried this:
case R.id.b_all_addresses_addAddress:
// Getting the user sound settings
AudioManager audioManager = (AudioManager) getSystemService(AUDIO_SERVICE);
float actualVolume = (float) audioManager
.getStreamVolume(AudioManager.STREAM_MUSIC);
float maxVolume = (float) audioManager
.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
float volume = actualVolume / maxVolume;
if (loaded)
soundPool.play(soundID, volume, volume, 1, 1, 1f);
else
Toast.makeText(this, "could I hate you God more?", Toast.LENGTH_SHORT).show();
in my on create I did this:
this.setVolumeControlStream(AudioManager.STREAM_MUSIC);
soundPool = new SoundPool(10, AudioManager.STREAM_MUSIC, 0);
soundPool.setOnLoadCompleteListener(new OnLoadCompleteListener() {
#Override
public void onLoadComplete(SoundPool soundPool, int sampleId,
int status) {
loaded = true;
}
});
soundID = soundPool.load(this, R.raw.thip, 1);
the sound is just 6 KB.
My Problem
I can't hear the voice

what values are you getting back for volume?
They should be between 0.1 and 0.99. Try using 0.5 as a hard-coded setting and see whether that works. I vaguely remember someone here once reported a "bug" in SoundPool which meant that 0 and 1 meant "mute" and your volume had to be between these two values in order to be heard.
Also: What format is your sound in? not all phones can play all the formats. Some need ogg, some are fine with WAV.
This here works for me on HTC Sensation XE, Android 4.03:
*WAV
*2 Channels
*16 bit PCM
*44.1kHz

Setting the Initial Volume to the phones ring volume

im trying to make it so when the user opens the app it sets the volume of the music to whatever they have their phones ringer volume at. This is my code so far but im not exactly sure what the paramters on setVolume(float, float) are. The android documentation doesn't explain it well. What is my code doing wrong here?
AudioManager audio = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
int currentVolume = audio.getStreamVolume(AudioManager.STREAM_RING);
mPlayer = MediaPlayer.create(this, R.raw.song);
mPlayer.setOnErrorListener(this);
if(mPlayer!= null)
{
mPlayer.setLooping(true);
mPlayer.setVolume(currentVolume,1);
}

Looks like audio.setStreamVolume is what you want, but pass in STREAM_MUSIC instead of STREAM_RING.
Note: the music volume and ringer volume are likely to have different maximum values, so you will need to normalize them. Use getStreamMaxVolume for that.
I have not done this before, and I haven't compiled this, but the code should look something like this
AudioManager audio = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
// Get the current ringer volume as a percentage of the max ringer volume.
int currentVolume = audio.getStreamVolume(AudioManager.STREAM_RING);
int maxRingerVolume = audio.getStreamMaxVolume(AudioManager.STREAM_RING);
double proportion = currentVolume/(double)maxRingerVolume;
// Calculate a desired music volume as that same percentage of the max music volume.
int maxMusicVolume = audio.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
int desiredMusicVolume = (int)(proportion * maxMusicVolume);
// Set the music stream volume.
audio.setStreamVolume(AudioManager.STREAM_MUSIC, desiredMusicVolume, 0 /*flags*/);

Android play music in a random amount of time

Now I can play a music in android. But I want to play this sound in a random amount of time between 2 to 8 seconds.How Can I randomly play it that for example the first time, it plays for 2 seconds, the next time 7 sec and so on? Can anybody help me?

Go through these links:
Random number Generation
Media Player
Timer
you will get an idea.

Sound in android is played like this :
AudioManager audioManager = (AudioManager) getSystemService(AUDIO_SERVICE);
int mSoundID = mSoundPool.load(this, R.raw.sound1, 1);
float lActualVolume = (float) audioManager
.getStreamVolume(AudioManager.STREAM_MUSIC);
float lMaxVolume = (float) audioManager
.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
float lVolume = lActualVolume / lMaxVolume;
// Is the sound loaded already?
if (mSoundIsLoaded) {
mSoundPool.play(mSoundID, lVolume, lVolume, 1, 0, 1f);
I think you have been given plenty of help to figure the random number part out.
You will have to put the sound file in your assets/raw directory.
edit:
I forgot to mention where the mSoundIsLoaded parameter came from.
I set it when my sound has been loaded. I do this in my onCreate method. when the sound is loaded I set the boolean field called mSoundIsLoaded. I do this to prevent NullPointerExceptions when playing the sound
the loading of the sound looks like this:
mSoundPool = new SoundPool(10, AudioManager.STREAM_MUSIC, 0);
mSoundPool.setOnLoadCompleteListener(new OnLoadCompleteListener() {
#Override
public void onLoadComplete(SoundPool soundPool, int sampleId,
int status) {
mSoundIsLoaded = true;
}
});
mSoundID = mSoundPool.load(this, R.raw.sound1, 1);