ParticleDevice.java 文件源码

@WorkerThread
T getVariable(String variableName)
        throws ParticleCloudException, IOException, VariableDoesNotExistException {

    if (!device.deviceState.variables.containsKey(variableName)) {
        throw new VariableDoesNotExistException(variableName);
    }

    R reply;
    try {
        reply = callApi(variableName);
    } catch (RetrofitError e) {
        throw new ParticleCloudException(e);
    }

    if (!reply.coreInfo.connected) {
        // FIXME: we should be doing this "connected" check on _any_ reply that comes back
        // with a "coreInfo" block.
        device.cloud.onDeviceNotConnected(device.deviceState);
        throw new IOException("Device is not connected.");
    } else {
        return reply.result;
    }
}