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Android

Posted by Evan Cornish
Evan Cornish
4,762 Points

making http get request with OkHttp call.execute() crashes app

I was following along the video, but as soon as I made the get request the app instantly crashes. The logs are not that helpful to me.

the relevant log message is just:

05-11 20:14:53.736 6009-6009/com.example.stormy E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.example.stormy, PID: 6009
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.stormy/com.example.stormy.MainActivity}: android.os.NetworkOnMainThreadException
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2325)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
        at android.app.ActivityThread.access$800(ActivityThread.java:151)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
        at android.os.Handler.dispatchMessage(Handler.java:102)
        at android.os.Looper.loop(Looper.java:135)
        at android.app.ActivityThread.main(ActivityThread.java:5254)
        at java.lang.reflect.Method.invoke(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:372)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
     Caused by: android.os.NetworkOnMainThreadException
        at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1147)
        at java.net.InetAddress.lookupHostByName(InetAddress.java:418)
        at java.net.InetAddress.getAllByNameImpl(InetAddress.java:252)
        at java.net.InetAddress.getAllByName(InetAddress.java:215)
        at okhttp3.Dns$Companion$SYSTEM$1.lookup(Dns.kt:48)
        at okhttp3.internal.connection.RouteSelector.resetNextInetSocketAddress(RouteSelector.kt:157)
        at okhttp3.internal.connection.RouteSelector.nextProxy(RouteSelector.kt:122)
        at okhttp3.internal.connection.RouteSelector.next(RouteSelector.kt:70)
        at okhttp3.internal.connection.ExchangeFinder.findConnection(ExchangeFinder.kt:203)
        at okhttp3.internal.connection.ExchangeFinder.findHealthyConnection(ExchangeFinder.kt:108)
        at okhttp3.internal.connection.ExchangeFinder.find(ExchangeFinder.kt:76)
        at okhttp3.internal.connection.Transmitter.newExchange$okhttp(Transmitter.kt:162)
        at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.kt:36)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:117)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:90)
        at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.kt:84)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:117)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:90)
        at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.kt:84)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:117)
        at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.kt:71)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:117)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:90)
        at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.kt:184)
        at okhttp3.RealCall.execute(RealCall.kt:67)
        at com.example.stormy.MainActivity.onCreate(MainActivity.java:42)
        at android.app.Activity.performCreate(Activity.java:5990)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387) 
        at android.app.ActivityThread.access$800(ActivityThread.java:151) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303) 
        at android.os.Handler.dispatchMessage(Handler.java:102) 
        at android.os.Looper.loop(Looper.java:135) 
        at android.app.ActivityThread.main(ActivityThread.java:5254) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at java.lang.reflect.Method.invoke(Method.java:372) 
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698) 

my code at that section is

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

        String apiKey = "blanked out ******";


        Double latitude = 37.8267;
        Double longtitude = -122.4233;


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

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

        Call call = client.newCall(request);

        try {
            Response response = call.execute();
        } catch (IOException e) {
            Log.e(TAG, "IO Exception caught: ", e);
        }

Does anyone have any idea what's going on?

Thanks in advance

1 Answer

Evan Cornish
Evan Cornish
4,762 Points

hey I figured it out, sorry for the stupid question. Should've just watched until the end of the video.