Question

我正在使用Chromecast Companion Library，第一次创建活动时会显示我的chromecast图标。但是当我离开活动然后回到它时，投射图标将不会显示。以下是我如何添加chromecast图标并更新其显示的相关代码：

在我的布局XML中：

<android.support.v7.app.MediaRouteButton
    android:id="@+id/media_route_button"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:mediaRouteTypes="user"
    android:layout_centerVertical="true"
    android:visibility="gone"
    />

在我的活动中：

public void onCreate(Bundle savedInstanceState) {
...
mCastManager = RadioPup.getCastManager(this);
    mMediaRouteButton = (MediaRouteButton) findViewById(R.id.media_route_button);
    mCastManager.addMediaRouterButton(mMediaRouteButton);
    setupCastListener();
}

private void setupCastListener() {
    Log.i(LOG_TAG, "SETUP CAST LISTENER");
    mCastConsumer = new VideoCastConsumerImpl() {
        @Override
        public void onCastAvailabilityChanged(boolean castPresent) {
            Log.i(LOG_TAG, "CAST AVAILABILITY CHANGED");
             mMediaRouteButton.setVisibility(castPresent ? View.VISIBLE : 
            View.INVISIBLE);
            }

        @Override
        public void onApplicationConnected(ApplicationMetadata appMetadata,
                String sessionId, boolean wasLaunched) {
            Log.i(LOG_TAG, "CAST APPLICATION CONNECTED");
        }

        @Override
        public void onApplicationDisconnected(int errorCode) {
        }

        @Override
        public void onDisconnected() {
        }

        @Override
        public void onRemoteMediaPlayerMetadataUpdated() {
            try {
            } catch (Exception e) {
                // silent
            }
        }

        @Override
        public void onFailed(int resourceId, int statusCode) {

        }

        @Override
        public void onConnectionSuspended(int cause) {
        }

        @Override
        public void onConnectivityRecovered() {
        }

    };
}

protected void onDestroy() {
...
if (null != mCastManager) {
        Log.i(LOG_TAG, "onDestroy()");
        mCastManager.clearContext(this);
        mCastConsumer = null;
    }
}

protected void onPause() {
...
mCastManager.decrementUiCounter();
    mCastManager.removeVideoCastConsumer(mCastConsumer);
}

protected void onResume() {
...
mCastManager = RadioPup.getCastManager(this);
    mCastManager.incrementUiCounter();
    mCastManager.addVideoCastConsumer(mCastConsumer);
}

非常感谢任何帮助。

Answer 1

您可能希望将incrementUiCounter()和decrementUiCounter()添加到您的活动中，请查看CastVideos-android项目中的示例。

Answer 2

通过使用此回调方法修复它：

        @Override
        public void onCastDeviceDetected(RouteInfo info) {
            Log.i(LOG_TAG, "CAST DEVICE DETECTED");
            mMediaRouteButton.setVisibility(View.VISIBLE);
        }

Cast图标仅显示第一次加载活动

2 个答案: