Package com.google.android.exoplayer2.ext.media2

## Class SessionCallbackBuilder.DefaultAllowedCommandProvider

- java.lang.Object
- - com.google.android.exoplayer2.ext.media2.SessionCallbackBuilder.DefaultAllowedCommandProvider

- All Implemented Interfaces:
    `SessionCallbackBuilder.AllowedCommandProvider`
  Enclosing class:
    SessionCallbackBuilder

      public static final class SessionCallbackBuilder.DefaultAllowedCommandProvider
      extends Object
      implements SessionCallbackBuilder.AllowedCommandProvider

  Default implementation of `SessionCallbackBuilder.AllowedCommandProvider` that behaves as follows:
  - Accepts connection requests from controller if any of the following conditions are met:
    - Controller is in the same package as the session.
    - Controller is allowed via `setTrustedPackageNames(List)`.
    - Controller has package name `MediaSessionManager.RemoteUserInfo.LEGACY_CONTROLLER`. See `package name limitation` for details.
    - Controller is trusted (i.e. has MEDIA_CONTENT_CONTROL permission or has enabled notification manager).
  - Allows all commands that the current player can handle.
  - Accepts all command requests for allowed commands.

  Note: this implementation matches the behavior of the ExoPlayer MediaSession extension and `MediaSessionCompat`.

- - ### Constructor Summary

    Constructors
    Constructor | Description
    --- | ---
    `DefaultAllowedCommandProvider​(Context context)` |

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method | Description
    --- | --- | ---
    `boolean` | `acceptConnection​(androidx.media2.session.MediaSession session, androidx.media2.session.MediaSession.ControllerInfo controllerInfo)` | Called to query whether to allow connection from the controller.
    `androidx.media2.session.SessionCommandGroup` | `getAllowedCommands​(androidx.media2.session.MediaSession session, androidx.media2.session.MediaSession.ControllerInfo controllerInfo, androidx.media2.session.SessionCommandGroup baseAllowedSessionCommands)` | Called to query allowed commands in following cases: A `MediaController` requests to connect, and allowed commands is required to tell initial allowed commands.
    `int` | `onCommandRequest​(androidx.media2.session.MediaSession session, androidx.media2.session.MediaSession.ControllerInfo controllerInfo, androidx.media2.session.SessionCommand command)` | Called when a `MediaController` has called an API that controls `SessionPlayer` set to the `MediaSession`.
    `void` | `setTrustedPackageNames​(List<String> packageNames)` | Sets the package names from which the session will accept incoming connections.

    - ### Methods inherited from class java.lang.Object

      `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Constructor Detail

    - #### DefaultAllowedCommandProvider

          public DefaultAllowedCommandProvider​(Context context)

  - ### Method Detail

    - #### acceptConnection

          public boolean acceptConnection​(androidx.media2.session.MediaSession session,
                                          androidx.media2.session.MediaSession.ControllerInfo controllerInfo)

      Description copied from interface: `SessionCallbackBuilder.AllowedCommandProvider`
      Called to query whether to allow connection from the controller.

      If it returns `true` to accept connection, then `SessionCallbackBuilder.AllowedCommandProvider.getAllowedCommands(androidx.media2.session.MediaSession, androidx.media2.session.MediaSession.ControllerInfo, androidx.media2.session.SessionCommandGroup)` will be immediately followed to return initial allowed command.

      Prefer use `SessionCallbackBuilder.PostConnectCallback` for any extra initialization about controller, where controller is connected and session can send commands to the controller.

      Specified by:
        `acceptConnection` in interface `SessionCallbackBuilder.AllowedCommandProvider`
      Parameters:
        `session` - The media session.
        `controllerInfo` - The `MediaSession.ControllerInfo` for the controller that is requesting connect.
      Returns:
        `true` to accept connection. `false` otherwise.

    - #### getAllowedCommands

          public androidx.media2.session.SessionCommandGroup getAllowedCommands​(androidx.media2.session.MediaSession session,
                                                                                androidx.media2.session.MediaSession.ControllerInfo controllerInfo,
                                                                                androidx.media2.session.SessionCommandGroup baseAllowedSessionCommands)

      Description copied from interface: `SessionCallbackBuilder.AllowedCommandProvider`
      Called to query allowed commands in following cases:
      - A `MediaController` requests to connect, and allowed commands is required to tell initial allowed commands.
      - Underlying `SessionPlayer` state changes, and allowed commands may be updated via `MediaSession.setAllowedCommands(androidx.media2.session.MediaSession.ControllerInfo, androidx.media2.session.SessionCommandGroup)`.

      The provided `baseAllowedSessionCommand` is built automatically based on the state of the `SessionPlayer`, `SessionCallbackBuilder.RatingCallback`, `SessionCallbackBuilder.MediaItemProvider`, `SessionCallbackBuilder.CustomCommandProvider`, and `SessionCallbackBuilder.SkipCallback` so may be a useful starting point for any required customizations.

      Specified by:
        `getAllowedCommands` in interface `SessionCallbackBuilder.AllowedCommandProvider`
      Parameters:
        `session` - The media session.
        `controllerInfo` - The `MediaSession.ControllerInfo` for the controller for which allowed commands are being queried.
        `baseAllowedSessionCommands` - Base allowed session commands for customization.
      Returns:
        The allowed commands for the controller.
      See Also:
        `MediaSession.SessionCallback.onConnect(MediaSession, ControllerInfo)`

    - #### onCommandRequest

          public int onCommandRequest​(androidx.media2.session.MediaSession session,
                                      androidx.media2.session.MediaSession.ControllerInfo controllerInfo,
                                      androidx.media2.session.SessionCommand command)

      Description copied from interface: `SessionCallbackBuilder.AllowedCommandProvider`
      Called when a `MediaController` has called an API that controls `SessionPlayer` set to the `MediaSession`.
      Specified by:
        `onCommandRequest` in interface `SessionCallbackBuilder.AllowedCommandProvider`
      Parameters:
        `session` - The media session.
        `controllerInfo` - A `MediaSession.ControllerInfo` that needs allowed command update.
        `command` - A `SessionCommand` from the controller.
      Returns:
        A session result code defined in `SessionResult`.
      See Also:
        `MediaSession.SessionCallback.onCommandRequest(androidx.media2.session.MediaSession, androidx.media2.session.MediaSession.ControllerInfo, androidx.media2.session.SessionCommand)`

    - #### setTrustedPackageNames

          public void setTrustedPackageNames​(@Nullable
                                             List<String> packageNames)

      Sets the package names from which the session will accept incoming connections.

      Apps that have `android.Manifest.permission.MEDIA_CONTENT_CONTROL`, packages listed in enabled_notification_listeners and the current package are always trusted, even if they are not specified here.

      Parameters:
        `packageNames` - Package names from which the session will accept incoming connections.
      See Also:
        `MediaSession.SessionCallback.onConnect(MediaSession, MediaSession.ControllerInfo)`, `MediaSessionManager.isTrustedForMediaControl(RemoteUserInfo)`