从 Chromecast 接收器获取静音事件的正确回调是什么？

Question

我运行遇到一个问题，当两个设备连接到同一个投射会话并且从设备 1 调用 BaseCastManager.setDeviceMute() 时，设备 2 没有收到 MediaCallback.onRouteVolumeChanged()

正确的做法是什么？是否有不同的回调？

这是最终调用的内容。

/**
 * Mutes or un-mutes the device volume.
 *
 * @throws CastException
 * @throws NoConnectionException
 * @throws TransientNetworkDisconnectionException
 */
public final void setDeviceMute(boolean mute) throws CastException,
        TransientNetworkDisconnectionException, NoConnectionException {
    checkConnectivity();
    try {
        Cast.CastApi.setMute(mApiClient, mute);
    } catch (IOException e) {
        throw new CastException("setDeviceMute", e);
    } catch (IllegalStateException e) {
        throw new NoConnectionException("setDeviceMute()", e);
    }
}

这是我的听众：

private class MediaCallBack extends android.support.v7.media.MediaRouter.Callback {
        @Override
        public void onRouteVolumeChanged(MediaRouter router,
                                         RouteInfo route) {
            super.onRouteVolumeChanged(router, route);
            onVolumeChanged(route.getVolume());
        }


    }

Answer 1

您需要监听回调onVolumeChanged of Cast.Listener:

public void onVolumeChanged ()

Called when the device's volume or mute state has changed.

Answer 2

由于您使用的是 Cast Companion Library，因此您可以通过扩展 VideoCastConsumerImpl 来使用回调 VideoCastConsumer#onVolumeChanged(double value, boolean isMute)，覆盖该方法并将其注册到 VideoCastManager（并在未注册时取消注册不再需要):

VideoCastConsumer myConsumer = new VideoCastConsumerImpl() {
   void onVolumeChanged(double value, boolean isMute) {
       // do as you wish here
   }
}

VideoCastManager.getInstance().addVideoCastConsumer(myConsumer);

从 Chromecast 接收器获取静音事件的正确回调是什么？

What is the correct callback to get mute events from the Chromecast Receiver?

android

google-cast

chromecast