AudioFocusRequestCompat.Builder
class AudioFocusRequestCompat.Builder
Builder class for AudioFocusRequestCompat objects.
See AudioFocusRequestCompat for an example of building an instance with this builder. The default values for the instance to be built are:
| focus listener and handler | none |
AudioAttributesCompat |
attributes with usage set to USAGE_MEDIA |
| pauses on duck | false |
| supports delayed focus grant | false |
In contrast to a AudioFocusRequest, attempting to build an AudioFocusRequestCompat without an AudioManager.OnAudioFocusChangeListener will throw an IllegalArgumentException, because the listener is required for all API levels up to API 26.
Summary
Public constructors |
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Constructs a new |
Builder(requestToCopy: AudioFocusRequestCompat)Constructs a new |
Public functions |
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AudioFocusRequestCompat! |
build()Builds a new |
AudioFocusRequestCompat.Builder |
setAudioAttributes(attributes: AudioAttributesCompat)Sets the |
AudioFocusRequestCompat.Builder |
setFocusGain(focusGain: Int)Sets the type of focus gain that will be requested. |
AudioFocusRequestCompat.Builder |
Sets the listener called when audio focus changes after being requested with |
AudioFocusRequestCompat.Builder |
setOnAudioFocusChangeListener(Sets the listener called when audio focus changes after being requested with |
AudioFocusRequestCompat.Builder |
setWillPauseWhenDucked(pauseOnDuck: Boolean)Declare the intended behavior of the application with regards to audio ducking. |
Public constructors
Builder
Builder(focusGain: Int)
Constructs a new Builder, and specifies how audio focus will be requested. Valid values for focus requests are AUDIOFOCUS_GAIN, AUDIOFOCUS_GAIN_TRANSIENT, and AUDIOFOCUS_GAIN_TRANSIENT_MAY_DUCK, and AUDIOFOCUS_GAIN_TRANSIENT_EXCLUSIVE. AUDIOFOCUS_GAIN_TRANSIENT_EXCLUSIVE is converted to AUDIOFOCUS_GAIN_TRANSIENT on API levels previous to API 19.
By default there is no focus change listener, delayed focus is not supported, ducking is suitable for the application, and the AudioAttributesCompat have a usage of USAGE_MEDIA.
| Parameters | |
|---|---|
focusGain: Int |
the type of audio focus gain that will be requested |
| Throws | |
|---|---|
java.lang.IllegalArgumentException |
thrown when an invalid focus gain type is used |
Builder
Builder(requestToCopy: AudioFocusRequestCompat)
Constructs a new Builder with all the properties of the
AudioFocusRequestCompat passed as parameter. Use this method when you want a new request to differ only by some properties.
| Parameters | |
|---|---|
requestToCopy: AudioFocusRequestCompat |
the non-null |
| Throws | |
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java.lang.IllegalArgumentException |
thrown when a null |
Public functions
build
fun build(): AudioFocusRequestCompat!
Builds a new AudioFocusRequestCompat instance combining all the information gathered by this Builder's configuration methods.
| Returns | |
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AudioFocusRequestCompat! |
the |
| Throws | |
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java.lang.IllegalStateException |
thrown when attempting to build a focus request without a focus change listener set. |
setAudioAttributes
fun setAudioAttributes(attributes: AudioAttributesCompat): AudioFocusRequestCompat.Builder
Sets the AudioAttributesCompat to be associated with the focus request, and which describe the use case for which focus is requested. As the focus requests typically precede audio playback, this information is used on certain platforms to declare the subsequent playback use case. It is therefore good practice to use in this method the same AudioAttributesCompat as used for playback, see for example setAudioAttributes in MediaPlayer or setAudioAttributes in AudioTrack.
| Parameters | |
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attributes: AudioAttributesCompat |
the |
| Returns | |
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AudioFocusRequestCompat.Builder |
this |
| Throws | |
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java.lang.NullPointerException |
thrown when using null for the attributes. |
setFocusGain
fun setFocusGain(focusGain: Int): AudioFocusRequestCompat.Builder
Sets the type of focus gain that will be requested. Use this method to replace the focus gain when building a request by modifying an existing AudioFocusRequestCompat instance.
| Parameters | |
|---|---|
focusGain: Int |
the type of audio focus gain that will be requested. |
| Returns | |
|---|---|
AudioFocusRequestCompat.Builder |
this |
| Throws | |
|---|---|
java.lang.IllegalArgumentException |
thrown when an invalid focus gain type is used |
setOnAudioFocusChangeListener
fun setOnAudioFocusChangeListener(
listener: AudioManager.OnAudioFocusChangeListener
): AudioFocusRequestCompat.Builder
Sets the listener called when audio focus changes after being requested with requestAudioFocus, and until being abandoned with abandonAudioFocusRequest. Note that only focus changes (gains and losses) affecting the focus owner are reported, not gains and losses of other focus requesters in the system. Notifications are delivered on the main thread.
| Parameters | |
|---|---|
listener: AudioManager.OnAudioFocusChangeListener |
the listener receiving the focus change notifications. |
| Returns | |
|---|---|
AudioFocusRequestCompat.Builder |
this |
| Throws | |
|---|---|
java.lang.NullPointerException |
thrown when a null focus listener is used. |
setOnAudioFocusChangeListener
fun setOnAudioFocusChangeListener(
listener: AudioManager.OnAudioFocusChangeListener,
handler: Handler
): AudioFocusRequestCompat.Builder
Sets the listener called when audio focus changes after being requested with requestAudioFocus, and until being abandoned with abandonAudioFocusRequest. Note that only focus changes (gains and losses) affecting the focus owner are reported, not gains and losses of other focus requesters in the system.
| Parameters | |
|---|---|
listener: AudioManager.OnAudioFocusChangeListener |
the listener receiving the focus change notifications. |
handler: Handler |
the |
| Returns | |
|---|---|
AudioFocusRequestCompat.Builder |
this |
| Throws | |
|---|---|
java.lang.NullPointerException |
thrown when a null focus listener or handler is used. |
setWillPauseWhenDucked
fun setWillPauseWhenDucked(pauseOnDuck: Boolean): AudioFocusRequestCompat.Builder
Declare the intended behavior of the application with regards to audio ducking. See more details in the AudioFocusRequest class documentation. Setting pauseOnDuck to true will only have an effect on O and later.
| Parameters | |
|---|---|
pauseOnDuck: Boolean |
use |
| Returns | |
|---|---|
AudioFocusRequestCompat.Builder |
this |