No JSON Data landing in the log

Question

Hi,

No JSON data is showing in the log and I cannot work out the reason why. I've checked my code matches what is in the tutorial, and cannot see anything obvious in the logcat.

CODE:

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

    String apiKey = "7ce1dbe5c41a6d917f918337a66373c6";
    double latitude = 37.8267;
    double longitude = -122.4233;
    String forecastURL = "https://api.darksky.net/forecast/"
            + apiKey + "/" + latitude + "," + longitude;

    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(@NotNull Call call, @NotNull IOException e) {
        }

        @Override
        public void onResponse(@NotNull Call call, @NotNull Response response) throws IOException {
            try {
                if (response.isSuccessful()) {
                    Log.v(TAG, response.body().string());
                }
            } catch (IOException e) {
                Log.e(TAG, "IO Exception Caught", e);
            }
        }
    });
}

}

LOGCAT (separated each line for ease):

2019-07-21 10:42:53.273 25258-25258/? I/.example.storm: Not late-enabling -Xcheck:jni (already on)

2019-07-21 10:42:53.315 25258-25258/? E/.example.storm: Unknown bits set in runtime_flags: 0x8000

2019-07-21 10:42:53.316 25258-25258/? W/.example.storm: Unexpected CPU variant for X86 using defaults: x86

2019-07-21 10:42:54.283 25258-25258/com.example.stormy W/.example.storm: JIT profile information will not be recorded: profile file does not exits.

2019-07-21 10:42:54.287 25258-25258/com.example.stormy I/chatty: uid=10137(com.example.stormy) identical 10 lines

2019-07-21 10:42:54.287 25258-25258/com.example.stormy W/.example.storm: JIT profile information will not be recorded: profile file does not exits.

2019-07-21 10:42:54.329 25258-25258/com.example.stormy I/InstantRun: starting instant run server: is main process

2019-07-21 10:42:54.860 25258-25258/com.example.stormy W/.example.storm: Accessing hidden method Landroid/view/View;->computeFitSystemWindows(Landroid/graphics/Rect;Landroid/graphics/Rect;)Z (greylist, reflection, allowed)

2019-07-21 10:42:54.861 25258-25258/com.example.stormy W/.example.storm: Accessing hidden method Landroid/view/ViewGroup;->makeOptionalFitsSystemWindows()V (greylist, reflection, allowed)

2019-07-21 10:42:55.545 25258-25258/com.example.stormy W/.example.storm: Accessing hidden method Lcom/android/org/conscrypt/OpenSSLSocketImpl;->setUseSessionTickets(Z)V (greylist,core-platform-api, reflection, allowed)

2019-07-21 10:42:55.546 25258-25258/com.example.stormy W/.example.storm: Accessing hidden method Lcom/android/org/conscrypt/OpenSSLSocketImpl;->setHostname(Ljava/lang/String;)V (greylist,core-platform-api, reflection, allowed)

2019-07-21 10:42:55.546 25258-25258/com.example.stormy W/.example.storm: Accessing hidden method Lcom/android/org/conscrypt/OpenSSLSocketImpl;->getAlpnSelectedProtocol()[B (greylist,core-platform-api, reflection, allowed)

2019-07-21 10:42:55.546 25258-25258/com.example.stormy W/.example.storm: Accessing hidden method Lcom/android/org/conscrypt/OpenSSLSocketImpl;->setAlpnProtocols([B)V (greylist,core-platform-api, reflection, allowed)

2019-07-21 10:42:55.547 25258-25258/com.example.stormy W/.example.storm: Accessing hidden method Ldalvik/system/CloseGuard;->get()Ldalvik/system/CloseGuard; (greylist,core-platform-api, reflection, allowed)

2019-07-21 10:42:55.548 25258-25258/com.example.stormy W/.example.storm: Accessing hidden method Ldalvik/system/CloseGuard;->open(Ljava/lang/String;)V (greylist,core-platform-api, reflection, allowed)

2019-07-21 10:42:55.548 25258-25258/com.example.stormy W/.example.storm: Accessing hidden method Ldalvik/system/CloseGuard;->warnIfOpen()V (greylist,core-platform-api, reflection, allowed)

2019-07-21 10:42:55.553 25258-25258/com.example.stormy D/NetworkSecurityConfig: No Network Security Config specified, using platform default

2019-07-21 10:42:55.879 25258-26007/com.example.stormy D/OpenGLRenderer: Swap behavior 1

2019-07-21 10:42:55.880 25258-26007/com.example.stormy W/OpenGLRenderer: Failed to choose config with EGL_SWAP_BEHAVIOR_PRESERVED, retrying without...

2019-07-21 10:42:55.880 25258-26007/com.example.stormy D/OpenGLRenderer: Swap behavior 0

2019-07-21 10:42:55.896 25258-26007/com.example.stormy D/eglCodecCommon: setVertexArrayObject: set vao to 0 (0) 0 0

2019-07-21 10:42:55.896 25258-26007/com.example.stormy D/EGL_emulation: eglCreateContext: 0xdee1a1e0: maj 3 min 1 rcv 4

2019-07-21 10:42:55.900 25258-26007/com.example.stormy D/EGL_emulation: eglMakeCurrent: 0xdee1a1e0: ver 3 1 (tinfo 0xdee0f490)

2019-07-21 10:42:55.902 25258-26007/com.example.stormy E/eglCodecCommon: glUtilsParamSize: unknow param 0x000082da

2019-07-21 10:42:55.905 25258-26007/com.example.stormy E/eglCodecCommon: glUtilsParamSize: unknow param 0x000082da

2019-07-21 10:42:55.950 25258-26007/com.example.stormy W/Gralloc3: mapper 3.x is not supported

2019-07-21 10:42:55.969 25258-26007/com.example.stormy D/OpenGLRenderer: Setting buffer count to 3, min_undequeued 1, extraBuffers 0

2019-07-21 10:42:56.022 25258-26007/com.example.stormy D/EGL_emulation: eglMakeCurrent: 0xdee1a1e0: ver 3 1 (tinfo 0xdee0f490)

2019-07-21 10:42:56.026 25258-26007/com.example.stormy D/eglCodecCommon: setVertexArrayObject: set vao to 0 (0) 1 0

2019-07-21 10:42:56.597 25258-26007/com.example.stormy I/OpenGLRenderer: Davey! duration=845ms; Flags=1, IntendedVsync=44220965672004, Vsync=44220999005336, OldestInputEvent=9223372036854775807, NewestInputEvent=0, HandleInputStart=44221005661700, AnimationStart=44221005743800, PerformTraversalsStart=44221005812100, DrawStart=44221235278000, SyncQueued=44221237427800, SyncStart=44221287367000, IssueDrawCommandsStart=44221287471500, SwapBuffers=44221733501900, FrameCompleted=44221860663400, DequeueBufferDuration=5497000, QueueBufferDuration=1881000,

Answer 1 · 2019-07-21T10:00:48Z

July 21, 2019 10:00am

Strange, after doing some digging around online (https://stackoverflow.com/questions/56266801/java-net-socketexception-socket-failed-eperm-operation-not-permitted) I added the user permission for "ACCESS_NETWORK_STATE" and also uninstalled the app from my emulator and reinstalled and now it works.

Unclear which of the two solutions worked, but going to leave it as is!

Answer 2 · 2019-09-12T20:54:36Z

September 12, 2019 8:54pm

Was having the same issue, simply uninstalling and reinstalling the app fixed it for me.

Answer 3 · 2020-04-07T05:37:24Z

April 7, 2020 5:37am

Same here, uninstalling fixed the problem.

Answer 4 · 2021-03-12T06:41:08Z

March 12, 2021 6:41am

I'm not sure what version of Android you were using but there has been a behavior change to all apps that target Android 9 Pie and above. By default Http requests don't work. Because the request is not made to Log v does not appear in the Logcat. In order to make http network requests you have to specify it in the Android Manifest file. In the application tag add android: usesCleartextTraffic="true". See stack overflow:

https://stackoverflow.com/questions/51902629/how-to-allow-all-network-connection-types-http-and-https-in-android-9-pie

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Greg Mosley

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No JSON Data landing in the log

4 Answers

Greg Mosley

Greg Mosley

Wynston Champion

Wynston Champion

Blake Harmon

Blake Harmon

Adolfo Obregon

Adolfo Obregon

janet178

janet178