java - 致命异常 : OkHttp Dispatcher

Question

我在我的 Android 应用程序中使用 OkHttp 库向天气 API 发出 Web 请求。我已经实现了我的代码，但在执行请求时遇到了致命异常。

我也已经在我的 list 中添加了 INTERNET 权限。

主要 Activity .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'
}

然后，这是我得到的异常:

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)

我现在不知道该怎么办。我已经阅读并找到了一些关于这个主题的帖子。根据我收集到的信息，必须在 runOnUiThread() block 中进行 UI 更改。但是我没有在我的代码中进行任何 UI 更改，我仍然得到异常。

我也已经尝试将我的 JSON 解析代码放入 runOnUiThread() 并得到相同的致命异常结果。有人有什么想法吗？

Answer 1

Response 主体只能使用一次。你成功了两次

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

更多信息请参见 docs