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Android Android Lists and Adapters (2015) Updating the Data Model From JSONArray to a Java Array

Ricardo Sierra
Ricardo Sierra
14,920 Points

When creating the getDailyForecast method it shows an error

When creating the getDailyForecast method is shows an error. The error shows in private Day[] getDailyForecast(String jsonData) throws JSONException{}. The error is in "Day[]" it says, "Cannot resolve symbol 'Day'. " Please help!

Can you post the code you have written? It'd make it easier to assist you.

Ricardo Sierra
Ricardo Sierra
14,920 Points

This is just the MainActivity.java , it didnt show an error until that part.

package com.example.pc.stormy.ui;

import android.content.Context; import android.graphics.drawable.Drawable; import android.net.ConnectivityManager; import android.net.NetworkInfo; import android.support.v7.app.ActionBarActivity; import android.os.Bundle; import android.util.Log; import android.view.View; import android.widget.ImageView; import android.widget.ProgressBar; import android.widget.TextView; import android.widget.Toast;

import com.example.pc.stormy.R; import com.example.pc.stormy.Weather.Current; import com.example.pc.stormy.Weather.Forecast; import com.example.pc.stormy.Weather.Hour; import com.squareup.okhttp.Call; import com.squareup.okhttp.Callback; import com.squareup.okhttp.OkHttpClient; import com.squareup.okhttp.Request; import com.squareup.okhttp.Response;

import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject;

import java.io.IOException;

import butterknife.ButterKnife; import butterknife.InjectView;

public class MainActivity extends ActionBarActivity {

public static final String TAG = MainActivity.class.getSimpleName();

private Forecast mForecast;

@InjectView(R.id.timeLabel) TextView mTimeLabel;
@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 = 37.8267;
    final double longitude = -122.423;

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


    getForecast(latitude, longitude);
}

private void getForecast(double latitude, double longitude) {
    String apiKey = "5201ce8beecbac130318669ee78de908";
    String forecastUrl = "https://api.forecast.io/forecast/" + apiKey + "/" + latitude + "," + longitude;

    if (isNetworkAvailable()) {
        toggleRefresh();

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


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

            @Override
            public void onResponse(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() + "");
    mTimeLabel.setText("At " + current.getFormattedTime() + " it will be");
    mHumidityValue.setText(current.getHumidity()+ "");
    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 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.setTime(jsonDay.getLong("time"));
        day.setIcon(jsonDay.getString("icon"));
        day.setTemperatureMax(jsonDay.getDouble("temperatureMax"));
        day.setTimezone(timezone);

        days[i] = day;
    }
    return  days;


}


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()];

    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 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(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");
}

}

1 Answer

Ricardo Sierra
Ricardo Sierra
14,920 Points

I found the error, I named a class incorrectly! Thank You!!!!