Android Build a Weather App Hooking Up the Model to the View Plugging in the Data

Jovy Ong
Jovy Ong
Front End Web Development Techdegree Student 13,703 Points
Posted by Jovy Ong
Jovy Ong
Front End Web Development Techdegree Student 13,703 Points

FATAL EXCEPTION: OkHttp Dispatcher

I'm using the OkHttp library in my android app to make web requests to a weather API. I've already implemented my code and I'm getting a FATAL EXCEPTION when doing the request.

I've already added INTERNET permissions in my manifest too.

MainActivity.java:

private CurrentWeather currentWeather;

@Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); final ActivityMainBinding binding = DataBindingUtil.setContentView(MainActivity.this, R.layout.activity_main);

    String apiKey = "xxx";
    double latitude = 37.8267;
    double longitude = -122.4233;
    String forecastURL = String.format("https://api.darksky.net/forecast/%s/%f,%f", apiKey, latitude, longitude);

    if (isNetworkAvailable()) {
        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(Call call, IOException e) {

            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                try {
                    Log.v(TAG, response.body().string());
                    String jsonData = response.body().string();
                    if (response.isSuccessful()) {
                        currentWeather = getCurrentDetails(jsonData);
                    }

                } catch (IOException e) {
                    Log.e(TAG, e.getLocalizedMessage());
                } catch (JSONException e) {
                    Log.e(TAG, e.getLocalizedMessage());
                }
            }
        });
    }
    Log.d(TAG, "Main UI code is running");
}

private CurrentWeather getCurrentDetails(String jsonData) throws JSONException {

    JSONObject forecast = new JSONObject(jsonData);
    String timezone = forecast.getString("timezone");

    JSONObject currently = forecast.getJSONObject("currently");

    String icon = currently.getString("icon");
    String locationLabel = "Alcatraz Island";
    String summary = currently.getString("summary");
    long time = currently.getLong("time");
    double humidity = currently.getDouble("humidity");
    double precipProbability = currently.getDouble("precipProbability");
    double temperature = currently.getDouble("temperature");

    return new CurrentWeather(locationLabel, icon, time, temperature, humidity, precipProbability, summary, timezone);
}

Gradle:

dependencies { implementation fileTree(dir: 'libs', include: ['*.jar']) implementation 'com.android.support:appcompat-v7:28.0.0' implementation 'com.android.support.constraint:constraint-layout:1.1.3' implementation 'com.squareup.okhttp3:okhttp:3.12.0'

testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'

} Then, here's the exception I'm getting:

2018-12-04 20:55:49.969 3314-3330/com.test.starmie E/AndroidRuntime: FATAL EXCEPTION: OkHttp Dispatcher Process: com.test.starmie, PID: 3314 java.lang.IllegalStateException: closed at okio.RealBufferedSource.rangeEquals(RealBufferedSource.java:407) at okio.RealBufferedSource.rangeEquals(RealBufferedSource.java:401) at okhttp3.internal.Util.bomAwareCharset(Util.java:471) at okhttp3.ResponseBody.string(ResponseBody.java:175) at com.test.starmie.MainActivity$1.onResponse(MainActivity.java:66) at okhttp3.RealCall$AsyncCall.execute(RealCall.java:206) at okhttp3.internal.NamedRunnable.run(NamedRunnable.java:32) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607) at java.lang.Thread.run(Thread.java:761)

1 Answer

Lauren Moineau
Lauren Moineau
9,344 Points
Lauren Moineau
Lauren Moineau
9,344 Points

In your try block, you're calling response.body().string() twice, but the body can only be consumed once. Just pass jsonData in your Log.v instead and it should be ok:

try {
      String jsonData = response.body().string();
      Log.v(TAG, jsonData);