Temperature is not showing on the main Activity and after clicking the 7 Day Button - nothing showing on the next page

private Forecast mForecast;

@InjectView(R.id.timeLabel)TextView mTimeLabel; //Butterknife annotation
@InjectView(R.id.temperatureLabel)TextView mTemperatureLabel;
@InjectView(R.id.humidityValue) TextView mHumidityValue;
@InjectView(R.id.precipValue) TextView mPrecipValue;
@InjectView(R.id.summaryLabel) TextView mSummaryLabel;
@InjectView(R.id.iconImageView) ImageView mIconImageView;
@InjectView(R.id.refreshImageView)ImageView mRefreshImageView;
@InjectView(R.id.progressBar) ProgressBar mProgressBar;

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

    mProgressBar.setVisibility(View.INVISIBLE);

    final double latitude = 13.03302;
    final double longitude = 80.18376;

    mRefreshImageView.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            getForecast(latitude, longitude);
        }
    });

    getForecast(latitude,longitude);
    Log.d(TAG, "Main UI code is running!");

}

private void getForecast(double latitude, double longitude) {
    String apiKey = "30ef7135491662a649a4dc77c3ad7db3";

    String forecastUrl = "https://api.darksky.net/forecast/" + apiKey + "/" + latitude + "," + longitude;


    if(isNetworkAvailable()) {
        toggleRefresh();

        OkHttpClient client = new OkHttpClient();
        Request request = new Request.Builder().url(forecastUrl).build();

        Call call = client.newCall(request);  //Anonymous Class
        call.enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        toggleRefresh();
                    }
                });
                alertUserAboutError();
            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        toggleRefresh();
                    }
                });
                try {
                    String jsonData = response.body().string();
                    Log.v(TAG, jsonData);
                    if (response.isSuccessful()) {
                        mForecast = parseForecastDetails(jsonData);
                        runOnUiThread(new Runnable() {
                            @Override
                            public void run() {
                                updateDisplay();
                            }
                        });
                    } else {
                        alertUserAboutError();
                    }
                } catch (IOException e) {
                    Log.e(TAG, "Exception caught : ", e);
                } catch (JSONException e){
                    Log.e(TAG, "Exception caught : ", e);
                }
            }
        });
    }else{
        Toast.makeText(this, getString(R.string.network_unavailable_message),
                Toast.LENGTH_LONG).show();
    }
}

private void toggleRefresh() {
    if (mProgressBar.getVisibility() == View.INVISIBLE) {
        mProgressBar.setVisibility(View.VISIBLE);
        mRefreshImageView.setVisibility(View.INVISIBLE);
    } else {
        mProgressBar.setVisibility(View.INVISIBLE);
        mRefreshImageView.setVisibility(View.VISIBLE);
    }
}

private void updateDisplay() {
    Current current = mForecast.getCurrent();
    mTemperatureLabel.setText(current.getTemperature() + ""); //""is used to remove error & make it string
    mTimeLabel.setText("At " + current.getFormattedTime() + "it will be");
    mHumidityValue.setText(current.getHumidity() + "");  //""is used to remove error & make it it string
    mPrecipValue.setText(current.getPrecipChance() + "%");
    mSummaryLabel.setText(current.getSummary());

    Drawable drawable = getResources().getDrawable(current.getIconId());
    mIconImageView.setImageDrawable(drawable);
}

private Forecast parseForecastDetails(String jsonData) throws JSONException{
    Forecast forecast = new Forecast();

    forecast.setCurrent(getCurrentDetails(jsonData));
    forecast.setHourlyForecast(getHourlyForecast(jsonData));
    forecast.setDailyForecast(getDailyForecast(jsonData));
    return forecast;
}



private Hour[] getHourlyForecast(String jsonData) throws JSONException {
    JSONObject forecast = new JSONObject(jsonData);
    String timezone = forecast.getString("timezone");

    JSONObject hourly = forecast.getJSONObject("hourly");
    JSONArray data = hourly.getJSONArray("data");
    Hour[] hours = new Hour[data.length()];  // to get an Array out of an Object

    for(int i = 0; i <= data.length(); i++){
        JSONObject jsonHour = data.getJSONObject(i);
        Hour hour = new Hour();
        hour.setSummary(jsonHour.getString("summary"));
        hour.setTemperature(jsonHour.getDouble("temperature"));
        hour.setIcon(jsonHour.getString("icon"));
        hour.setTime(jsonHour.getLong("time"));
        hour.setTimeZone(timezone);

        hours[i] = hour;
    }
    return hours;
}
private Day[] getDailyForecast(String jsonData) throws JSONException {
    JSONObject forecast = new JSONObject(jsonData);
    String timezone = forecast.getString("timezone");

    JSONObject daily = forecast.getJSONObject("daily");
    JSONArray data = daily.getJSONArray("data");
    Day[] days = new Day[data.length()];

    for(int i = 0; i<= data.length(); i++) {
        JSONObject jsonDay = data.getJSONObject(i);
        Day day = new Day();
        day.setSummary(jsonDay.getString("summary"));
        day.setTemperatureMax(jsonDay.getDouble("temperatureMax"));
        day.setIcon(jsonDay.getString("icon"));
        day.setTime(jsonDay.getLong("time"));
        day.setTimeZone(timezone);

        days[i] = day;
    }

    return days;
}




private Current getCurrentDetails(String jsonData) throws JSONException {
    JSONObject forecast = new JSONObject(jsonData);
    String timezone = forecast.getString("timezone");
    Log.i(TAG,"From JSON: " + timezone);

    JSONObject currently = forecast.getJSONObject("currently");
    Current current = new Current();
    current.setHumidity(currently.getDouble("humidity"));
    current.setTime(currently.getLong("time"));
    current.setIcon(currently.getString("icon"));
    current.setPrecipChance(currently.getDouble("precipProbability"));
    current.setSummary(currently.getString("summary"));
    current.setTemperature((int) currently.getDouble("temperature"));
    current.setTimeZone(timezone);

    Log.d(TAG, current.getFormattedTime());

    return current;
}

private boolean isNetworkAvailable() {
    ConnectivityManager manager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo networkInfo = manager.getActiveNetworkInfo();
    boolean isAvailable = false;
    if(networkInfo != null && networkInfo.isConnected()){
        isAvailable = true;
    }
    return isAvailable;
}

private void alertUserAboutError() {
    AlertDialogFragment dialog = new AlertDialogFragment();
    dialog.show(getFragmentManager(), "error_dialog");
}


@OnClick(R.id.dailyButton)
public void startDailyActivity(View view){
    Intent intent = new Intent(this, DailyForecastActivity.class);
    startActivity(intent);
}