Ricevo un'eccezione NetworkOnMainThread su Lollipop + quando si esegue una chiamata a https
tramite Retrofit
e RxAndroid
.NetworkOnMainThread RxJava + Retrofit + Lollipop +
Ho isolato il codice e creato il seguente esempio che non riesce ancora.
Ecco il build.gradle
:
apply plugin: 'com.android.application'
apply plugin: 'me.tatarka.retrolambda'
android {
compileSdkVersion 23
buildToolsVersion "23.0.1"
defaultConfig {
applicationId "com.example.bug"
minSdkVersion 9
targetSdkVersion 23
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt')
}
}
lintOptions {
abortOnError false
}
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:23.0.1'
compile 'com.squareup.okhttp:okhttp:2.5.0'
compile 'com.squareup.okhttp:okhttp-urlconnection:2.5.0'
compile 'com.squareup.retrofit:adapter-rxjava:2.0.0-beta2'
compile 'com.squareup.retrofit:converter-gson:2.0.0-beta2'
compile 'com.squareup.retrofit:retrofit:2.0.0-beta2'
compile 'io.reactivex:rxandroid:1.0.1'
}
Ecco la sola attività:
public class HomeActivity extends Activity {
private static final String URL_BASE = "https://some.https.api.com/";
private static final String ENDPOINT = "some/endpoint";
@Override protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
OkHttpClient okHttpClient = new OkHttpClient();
okHttpClient.setConnectTimeout(15, TimeUnit.SECONDS);
okHttpClient.setReadTimeout(15, TimeUnit.SECONDS);
Retrofit retrofit = new Retrofit.Builder()
.baseUrl(URL_BASE)
.client(okHttpClient)
.addConverterFactory(GsonConverterFactory.create(new Gson()))
.addCallAdapterFactory(RxJavaCallAdapterFactory.create())
.build();
MyApi mService = retrofit.create(MyApi.class);
setContentView(R.layout.home_activity);
Button button = (Button) findViewById(R.id.button);
button.setOnClickListener(v->
mService.whatever(new ParamObject())
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(
response -> Log.d("BUG", response.status),
error -> Log.d("BUG", error.toString()))
);
}
interface MyApi {
@POST(ENDPOINT)
Observable<ResponseObject> whatever(@Body ParamObject requirements);
}
class ResponseObject {
public String status;
}
class ParamObject {
}
}
Ecco lo stacktrace eccezione:
E/AndroidRuntime(28345): FATAL EXCEPTION: main
E/AndroidRuntime(28345): Process: com.example.bug, PID: 28345
E/AndroidRuntime(28345): java.lang.IllegalStateException: Fatal Exception thrown on Scheduler.Worker thread.
E/AndroidRuntime(28345): at rx.internal.schedulers.ScheduledAction.run(ScheduledAction.java:62)
E/AndroidRuntime(28345): at android.os.Handler.handleCallback(Handler.java:739)
E/AndroidRuntime(28345): at android.os.Handler.dispatchMessage(Handler.java:95)
E/AndroidRuntime(28345): at android.os.Looper.loop(Looper.java:135)
E/AndroidRuntime(28345): at android.app.ActivityThread.main(ActivityThread.java:5221)
E/AndroidRuntime(28345): at java.lang.reflect.Method.invoke(Native Method)
E/AndroidRuntime(28345): at java.lang.reflect.Method.invoke(Method.java:372)
E/AndroidRuntime(28345): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
E/AndroidRuntime(28345): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
E/AndroidRuntime(28345): Caused by: android.os.NetworkOnMainThreadException
E/AndroidRuntime(28345): at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1147)
E/AndroidRuntime(28345): at com.android.org.conscrypt.OpenSSLSocketImpl$SSLOutputStream.write(OpenSSLSocketImpl.java:724)
E/AndroidRuntime(28345): at okio.Okio$1.write(Okio.java:80)
E/AndroidRuntime(28345): at okio.AsyncTimeout$1.write(AsyncTimeout.java:155)
E/AndroidRuntime(28345): at okio.RealBufferedSink.flush(RealBufferedSink.java:221)
E/AndroidRuntime(28345): at com.squareup.okhttp.internal.framed.Http2$Writer.rstStream(Http2.java:475)
E/AndroidRuntime(28345): at com.squareup.okhttp.internal.framed.FramedConnection.writeSynReset(FramedConnection.java:356)
E/AndroidRuntime(28345): at com.squareup.okhttp.internal.framed.FramedStream.close(FramedStream.java:222)
E/AndroidRuntime(28345): at com.squareup.okhttp.internal.http.FramedTransport.disconnect(FramedTransport.java:215)
E/AndroidRuntime(28345): at com.squareup.okhttp.internal.http.HttpEngine.disconnect(HttpEngine.java:573)
E/AndroidRuntime(28345): at com.squareup.okhttp.Call.cancel(Call.java:122)
E/AndroidRuntime(28345): at retrofit.OkHttpCall.cancel(OkHttpCall.java:162)
E/AndroidRuntime(28345): at retrofit.RxJavaCallAdapterFactory$CallOnSubscribe$1.call(RxJavaCallAdapterFactory.java:102)
E/AndroidRuntime(28345): at rx.subscriptions.BooleanSubscription.unsubscribe(BooleanSubscription.java:72)
E/AndroidRuntime(28345): at rx.internal.util.SubscriptionList.unsubscribeFromAll(SubscriptionList.java:124)
E/AndroidRuntime(28345): at rx.internal.util.SubscriptionList.unsubscribe(SubscriptionList.java:113)
E/AndroidRuntime(28345): at rx.Subscriber.unsubscribe(Subscriber.java:98)
E/AndroidRuntime(28345): at rx.internal.util.SubscriptionList.unsubscribeFromAll(SubscriptionList.java:124)
E/AndroidRuntime(28345): at rx.internal.util.SubscriptionList.unsubscribe(SubscriptionList.java:113)
E/AndroidRuntime(28345): at rx.Subscriber.unsubscribe(Subscriber.java:98)
E/AndroidRuntime(28345): at rx.internal.util.SubscriptionList.unsubscribeFromAll(SubscriptionList.java:124)
E/AndroidRuntime(28345): at rx.internal.util.SubscriptionList.unsubscribe(SubscriptionList.java:113)
E/AndroidRuntime(28345): at rx.Subscriber.unsubscribe(Subscriber.java:98)
E/AndroidRuntime(28345): at rx.observers.SafeSubscriber.onCompleted(SafeSubscriber.java:90)
E/AndroidRuntime(28345): at rx.internal.operators.OperatorObserveOn$ObserveOnSubscriber.pollQueue(OperatorObserveOn.java:201)
E/AndroidRuntime(28345): at rx.internal.operators.OperatorObserveOn$ObserveOnSubscriber$2.call(OperatorObserveOn.java:170)
E/AndroidRuntime(28345): at rx.internal.schedulers.ScheduledAction.run(ScheduledAction.java:55)
E/AndroidRuntime(28345): ... 8 more
Un paio di cose:
- Questo esempio di codice funziona perfettamente in Android 4.x
- Ho provato questo esempio (con modifiche minori) rispetto all'API GitHub e funziona perfettamente.
- L'API è in esecuzione sul motore dell'app di Google.
- Si noti che l'osservabile è essere iscriversi sul
Schedulers.io()
e osservato suAndroidSchedulers.mainThread()
Tutte le idee?
Modifica
Dopo aver dato un'occhiata più da vicino lo stacktrace mi figura c'era qualcosa HTTP2. Anche se non è lo stesso problema riportato here, la seguente riga per limitare i protocolli disponibili
OkHttp
ha funzionato di nuovo.okHttpClient.setProtocols(Collections.singletonList(Protocol.HTTP_1_1));
solo perché la parte modificata ha risolto il problema anche per me. stava avendo lo stesso problema su Android 5.0 + – Diogo