Get Data Channels

Upon the previous section, we get a list of device. But, the response is DeviceSummaryEntity, which contains limited information only for you to display in listview. We need to make another request to get detailed information of single device.

Get Device Info

Replace {deviceId} of RequestApi.DEVICE with certain deviceId to get the device info.

/**
 * GET device info.
 */
private void requestDeviceInfo(String deviceId) {
    McsJsonRequest request = new McsJsonRequest(
        RequestApi.DEVICE
            .replace("{deviceId}", deviceId),
        new McsResponse.SuccessListener<JSONObject>() {
            @Override public void onSuccess(JSONObject response) {
                mDeviceInfo = UIUtils.getFormattedGson()
                    .fromJson(response.toString(), DeviceInfoEnitity.class)
                    .getResults()[0];

                // ...
            }
        }
    );

    RequestManager.sendInBackground(request);
}

UIUtils.getFormattedGson() returns a gson with standard time format.

McsDataChannel

Now you have DeviceInfoEntity, use

List<DataChannel> dataChannels = mDeviceInfo.getDataChannels();

to get all the data channels of this device. Every single data channel is in format of DataChannelEntity.

Next, create an McsDataChannel:

/**
 * Optional.
 * Default message of socket update shows in log.
 */
McsSocketListener socketListener = new McsSocketListener(
    new McsSocketListener.OnUpdateListener() {
      @Override public void onUpdate(JSONObject response) {
        // Socket message received
      }
    }
);
DataChannelEntity channelEntity = deviceInfo.getDataChannels().get(0);

mDataChannel = new McsDataChannel(mDeviceInfo, channelEntity, socketListener);

Check Data Channels - MCS Android SDK API Reference to know how to use McsDataChannel.

Note that McsDataChannel contains DataChannelEntity. DataChannelEntity is only an entity / data model that describes the format of response. McsDataChannel is a wrapper of DataChannelEntity with extra funcitons:

• Web Socket
• Event Emit