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Audio control on Android

Users should be able to control audio whenever it plays automatically. This includes being able to reduce the volume to zero. It's difficult to hear speech output of the screen reader users when other audio is playing at the same time.

In Android apps, you should always be able to control audio. When using MediaPlayer, you should implement buttons to call the startpause and stop methods.

It is a best practice to play audio through the correct channel. Android has introduced AudioAttributes as a replacement of the STREAM types defined in AudioManager.

AudioAttributes defines the following content types:

AudioAttributes defines the following usages:

AudioManager defines the following legacy channels:

// Set audio attributes
val player = MediaPlayer()

// Provide media controls
button.setOnClickListener {
    if (player.isPlaying()) {
    } else {


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