Raspberry Pi 3に、Rainbow HATを装着して、AndroidThingsのアプリを書いてみた ref: http://qiita.com/KazuyukiEguchi/items/748f9a9a340ddfbc2f22

build.grade

compile 'com.google.android.things.contrib:driver-rainbowhat:0.1'

MainActivity.java

    @Override protected void onCreate(Bundle savedInstanceState) {
        Log.d(TAG,"onCreate()");
        super.onCreate(savedInstanceState);

        sensorManager = (SensorManager) getSystemService(Context.SENSOR_SERVICE);

        try {
            mSensorDriver = new Bmx280SensorDriver(RainbowHat.BUS_SENSOR);
            mSensorDriver.registerTemperatureSensor();
            mSensorDriver.registerPressureSensor();
        } catch (IOException e) {
            Log.d(TAG,e.toString());
        }
    }

    @Override
    protected void onResume() {
        Log.d(TAG,"onResume()");
        super.onResume();

        List<Sensor> lists = sensorManager.getDynamicSensorList(Sensor.TYPE_ALL);

        for(int i = 0 ; i< lists.size() ; i++)
        {
            Log.d(TAG,"" + lists.get(i).toString());
            sensorManager.registerListener(onEvent2, lists.get(i), SensorManager.SENSOR_DELAY_NORMAL);
        }
    }

    @Override
    protected void onPause() {
        Log.d(TAG,"onPause()");
        super.onPause();

        try {
            if(mSensorDriver != null) {
                mSensorDriver.unregisterTemperatureSensor();
                mSensorDriver.unregisterPressureSensor();
                mSensorDriver.close();
            }
            sensorManager.unregisterListener(onEvent2);
        } catch (IOException e) {
            Log.d(TAG,e.toString());
        }
    }

    SensorEventListener onEvent2 = new SensorEventListener() {
        @Override
        public void onSensorChanged(SensorEvent sensorEvent) {
            if(sensorEvent.sensor.getType() == Sensor.TYPE_AMBIENT_TEMPERATURE) {
                Log.d(TAG, "TEMPERATURE=" + sensorEvent.values[0]);
            }
            else if(sensorEvent.sensor.getType() == Sensor.TYPE_PRESSURE)
            {
                Log.d(TAG,"PRESSURE="+ sensorEvent.values[0]);
            }
        }

        @Override
        public void onAccuracyChanged(Sensor sensor, int i) {

        }
    };