Pebble Data Logging for Android not doing anything

Question

I'm new to using pebble and I downloaded their ocean survey demo program found here: https://github.com/pebble/pebble-sdk-examples/tree/master/data-logging-demo/OceanSurveyDemo-Android

But when I run it and the demo on cloudpebble, all I see is a black screen on my android app. I was wondering if there is anything else I'm missing to get data logging to work properly here? I also attempted a few of their other examples as shown here: http://developer.getpebble.com/guides/mobile-apps/android/android-datalogging/

And I get DATA_LOGGING_SUCCESS returned from the logging session on cloudpebble but again, nothing shows up on my phone when I use their provided receiving code:

package com.getpebble.dataloggingtest;

import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.widget.TextView;

import com.getpebble.android.kit.PebbleKit;
import com.getpebble.android.kit.PebbleKit.PebbleDataLogReceiver;

import java.util.UUID;

/**
 * MainActivity class
 * Implements a PebbleDataLogReceiver to process received log data, 
 * as well as a finished session.
 */
public class MainActivity extends Activity {

  // Configuration
  private static final UUID WATCHAPP_UUID = UUID.fromString("12258306-6cff-4b67-8af3-6f14105e8d8f");
  private static final int DATA_LOG_TAG_COMPASS = 52;

  // App elements
  private PebbleDataLogReceiver dataloggingReceiver;
  private TextView textView;
  private StringBuilder resultBuilder = new StringBuilder();

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    // Setup TextView
    textView = (TextView)findViewById(R.id.text_view);
    textView.setText("Waiting for logging data...");
  }

  @Override
  protected void onResume() {
    super.onResume();

    // Define data reception behavior
    PebbleDataLogReceiver dataloggingReceiver = new PebbleDataLogReceiver(WATCHAPP_UUID) {

      @Override
      public void receiveData(Context context, UUID logUuid, Long timestamp, Long tag, int data) {
        // Check this is the compass headings log
        if(tag.intValue() == DATA_LOG_TAG_COMPASS) {
          // Get the compass value and append to result StringBuilder
          resultBuilder.append("Heading: " + data + " degrees");
          resultBuilder.append("\n");
        }
      }

      @Override
      public void onFinishSession(Context context, UUID logUuid, Long timestamp, Long tag) {
        super.onFinishSession(context, logUuid, timestamp, tag);

        // Display all compass headings received
        textView.setText("Session finished!\n" + "Results were: \n\n" + resultBuilder.toString());
      }

    };

    // Register DataLogging Receiver
    PebbleKit.registerDataLogReceiver(this, dataloggingReceiver);
  }

  @Override
  protected void onPause() {
    super.onPause();

    // Always unregister callbacks
    if(dataloggingReceiver != null) {
      unregisterReceiver(dataloggingReceiver);
    }
  }
}

I must be misunderstanding something, but why is my phone not getting any data? I don't see any errors in Android Studio.

Answer 1

I think you're not getting any data because you need to push buttons on the watch to start the sending of data to the watch.