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How do you make a mediaplayer play a sound louder?

In my application a sound is triggered by a button click, but the sound is relatively quiet and requires me to manually increase the volume on my phone to hear. Is there a way to increase the volume so that it get's louder quicker? Our plays louder by default?

Edit: the set volume function didn't have an effect on the overall loudness without physically changing the volume on my phone. Am I doing something wrong or have the wrong values

you can use setVolume method

mediaPlayer.setVolume(0.09f , 0.09f);//0,09f = 90% of volume

public void setVolume (float leftVolume, float rightVolume)

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