public
final
class
RemoteController
extends Object
| java.lang.Object | |
| ↳ | android.media.RemoteController |
This class was deprecated
in API level 21.
Use MediaController instead.
The RemoteController class is used to control media playback, display and update media metadata
and playback status, published by applications using the RemoteControlClient class.
A RemoteController shall be registered through
registerRemoteController(RemoteController) in order for the system to send
media event updates to the RemoteController.OnClientUpdateListener listener set in the class constructor.
Implement the methods of the interface to receive the information published by the active
RemoteControlClient instances.
By default an RemoteController.OnClientUpdateListener implementation will not receive bitmaps for
album art. Use setArtworkConfiguration(int, int) to receive images as well.
Registration requires the RemoteController.OnClientUpdateListener listener to be one of the enabled
notification listeners (see NotificationListenerService).
Nested classes | |
|---|---|
class |
RemoteController.MetadataEditor
A class to read the metadata published by a |
interface |
RemoteController.OnClientUpdateListener
Interface definition for the callbacks to be invoked whenever media events, metadata and playback status are available. |
Constants | |
|---|---|
int |
POSITION_SYNCHRONIZATION_CHECK
The playback position synchronization mode where the RemoteControlClient instances which expose their playback position to the framework, will be regularly polled to check whether any drift has been noticed between their estimated position and the one they report. |
int |
POSITION_SYNCHRONIZATION_NONE
Default playback position synchronization mode where the RemoteControlClient is not asked regularly for its playback position to see if it has drifted from the estimated position. |
Public constructors | |
|---|---|
RemoteController(Context context, RemoteController.OnClientUpdateListener updateListener)
Class constructor. |
|
RemoteController(Context context, RemoteController.OnClientUpdateListener updateListener, Looper looper)
Class constructor. |
|
Public methods | |
|---|---|
boolean
|
clearArtworkConfiguration()
Prevents this RemoteController from receiving artwork images. |
RemoteController.MetadataEditor
|
editMetadata()
Creates a |
long
|
getEstimatedMediaPosition()
Return the estimated playback position of the current media track or a negative value if not available. |
boolean
|
seekTo(long timeMs)
Sets the new playback position. |
boolean
|
sendMediaKeyEvent(KeyEvent keyEvent)
Send a simulated key event for a media button to be received by the current client. |
boolean
|
setArtworkConfiguration(int width, int height)
Set the maximum artwork image dimensions to be received in the metadata. |
boolean
|
setSynchronizationMode(int sync)
Set the playback position synchronization mode. |
Inherited methods | |
|---|---|
 From
class
java.lang.Object
| |
int POSITION_SYNCHRONIZATION_CHECK
The playback position synchronization mode where the RemoteControlClient instances which expose their playback position to the framework, will be regularly polled to check whether any drift has been noticed between their estimated position and the one they report. Note that this mode should only ever be used when needing to display very accurate playback position, as regularly polling a RemoteControlClient for its position may have an impact on battery life (if applicable) when this query will trigger network transactions in the case of remote playback.
Constant Value: 1 (0x00000001)
int POSITION_SYNCHRONIZATION_NONE
Default playback position synchronization mode where the RemoteControlClient is not asked regularly for its playback position to see if it has drifted from the estimated position.
Constant Value: 0 (0x00000000)
RemoteController (Context context, RemoteController.OnClientUpdateListener updateListener)
Class constructor.
| Parameters | |
|---|---|
context |
Context:
the Context, must be non-null. |
updateListener |
RemoteController.OnClientUpdateListener:
the listener to be called whenever new client information is available,
must be non-null. |
| Throws | |
|---|---|
IllegalArgumentException |
|
RemoteController (Context context, RemoteController.OnClientUpdateListener updateListener, Looper looper)
Class constructor.
| Parameters | |
|---|---|
context |
Context:
the Context, must be non-null. |
updateListener |
RemoteController.OnClientUpdateListener:
the listener to be called whenever new client information is available,
must be non-null. |
looper |
Looper:
the Looper on which to run the event loop,
or null to use the current thread's looper. |
| Throws | |
|---|---|
IllegalArgumentException |
|
boolean clearArtworkConfiguration ()
Prevents this RemoteController from receiving artwork images.
| Returns | |
|---|---|
boolean |
true if receiving artwork images was successfully disabled. |
RemoteController.MetadataEditor editMetadata ()
Creates a RemoteController.MetadataEditor for updating metadata values of the editable keys of
the current RemoteControlClient.
This method can only be called on a registered RemoteController.
| Returns | |
|---|---|
RemoteController.MetadataEditor |
a new MetadataEditor instance. |
long getEstimatedMediaPosition ()
Return the estimated playback position of the current media track or a negative value if not available.
The value returned is estimated by the current process and may not be perfect.
The time returned by this method is calculated from the last state change time based
on the current play position at that time and the last known playback speed.
An application may call setSynchronizationMode(int) to apply
a synchronization policy that will periodically re-sync the estimated position
with the RemoteControlClient.
| Returns | |
|---|---|
long |
the current estimated playback position in milliseconds or a negative value if not available |
boolean seekTo (long timeMs)
Sets the new playback position. This method can only be called on a registered RemoteController.
| Parameters | |
|---|---|
timeMs |
long:
a 0 or positive value for the new playback position, expressed in ms. |
| Returns | |
|---|---|
boolean |
true if the command to set the playback position was successfully sent. |
| Throws | |
|---|---|
IllegalArgumentException |
|
boolean sendMediaKeyEvent (KeyEvent keyEvent)
Send a simulated key event for a media button to be received by the current client.
To simulate a key press, you must first send a KeyEvent built with
a ACTION_DOWN action, then another event with the ACTION_UP
action.
The key event will be sent to the registered receiver
(see registerMediaButtonEventReceiver(PendingIntent)) whose associated
RemoteControlClient's metadata and playback state is published (there may be
none under some circumstances).
| Parameters | |
|---|---|
keyEvent |
KeyEvent:
a KeyEvent instance whose key code is one of
KEYCODE_MUTE,
KEYCODE_HEADSETHOOK,
KEYCODE_MEDIA_PLAY,
KEYCODE_MEDIA_PAUSE,
KEYCODE_MEDIA_PLAY_PAUSE,
KEYCODE_MEDIA_STOP,
KEYCODE_MEDIA_NEXT,
KEYCODE_MEDIA_PREVIOUS,
KEYCODE_MEDIA_REWIND,
KEYCODE_MEDIA_RECORD,
KEYCODE_MEDIA_FAST_FORWARD,
KEYCODE_MEDIA_CLOSE,
KEYCODE_MEDIA_EJECT,
or KEYCODE_MEDIA_AUDIO_TRACK. |
| Returns | |
|---|---|
boolean |
true if the event was successfully sent, false otherwise. |
| Throws | |
|---|---|
IllegalArgumentException |
|
Developers
boolean setArtworkConfiguration (int width,
int height)
Set the maximum artwork image dimensions to be received in the metadata. No bitmaps will be received unless this has been specified.
| Parameters | |
|---|---|
width |
int:
the maximum width in pixels |
height |
int:
the maximum height in pixels |
| Returns | |
|---|---|
boolean |
true if the artwork dimension was successfully set. |
| Throws | |
|---|---|
IllegalArgumentException |
|
boolean setSynchronizationMode (int sync)
Set the playback position synchronization mode. Must be called on a registered RemoteController.
| Parameters | |
|---|---|
sync |
int:
POSITION_SYNCHRONIZATION_NONE or POSITION_SYNCHRONIZATION_CHECK |
| Returns | |
|---|---|
boolean |
true if the synchronization mode was successfully set. |
| Throws | |
|---|---|
IllegalArgumentException |
|