Beobachtbarer Rückgabetyp muss als beobachtbar oder beobachtbar ⇐ Android

[Anonymous]

Ich verwende Retrofit 2.0.0-beta2 und Debug-Build funktioniert ordnungsgemäß, erhalte jedoch den folgenden Fehler beim Release-Build mit Proguard.

Code: Select all

11-17 18:23:22.751 16274-16274/ph.reggis.FEDT D/AndroidRuntime: Shutting down VM
11-17 18:23:22.752 16274-16274/ph.reggis.FEDT E/AndroidRuntime: FATAL EXCEPTION: main
11-17 18:23:22.752 16274-16274/ph.reggis.FEDT E/AndroidRuntime: Process: ph.reggis.FEDT, PID: 16274
11-17 18:23:22.752 16274-16274/ph.reggis.FEDT E/AndroidRuntime: java.lang.RuntimeException: Unable to resume activity {ph.reggis.FEDT/ph.reggis.FEDT.view.activity.NotificationListActivity}: java.lang.IllegalArgumentException: Unable to create call adapter for class b.a
11-17 18:23:22.752 16274-16274/ph.reggis.FEDT E/AndroidRuntime:     for method InsularFMService.getNews
11-17 18:23:22.752 16274-16274/ph.reggis.FEDT E/AndroidRuntime:     at android.app.ActivityThread.performResumeActivity(ActivityThread.java:3103)
11-17 18:23:22.752 16274-16274/ph.reggis.FEDT E/AndroidRuntime:     at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:3134)
11-17 18:23:22.752 16274-16274/ph.reggis.FEDT E/AndroidRuntime:     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2481)
11-17 18:23:22.752 16274-16274/ph.reggis.FEDT E/AndroidRuntime:     at android.app.ActivityThread.-wrap11(ActivityThread.java)
11-17 18:23:22.752 16274-16274/ph.reggis.FEDT E/AndroidRuntime:     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
11-17 18:23:22.752 16274-16274/ph.reggis.FEDT E/AndroidRuntime:     at android.os.Handler.dispatchMessage(Handler.java:102)
11-17 18:23:22.752 16274-16274/ph.reggis.FEDT E/AndroidRuntime:     at android.os.Looper.loop(Looper.java:148)
11-17 18:23:22.752 16274-16274/ph.reggis.FEDT E/AndroidRuntime:     at android.app.ActivityThread.main(ActivityThread.java:5417)
11-17 18:23:22.752 16274-16274/ph.reggis.FEDT E/AndroidRuntime:     at java.lang.reflect.Method.invoke(Native Method)
11-17 18:23:22.752 16274-16274/ph.reggis.FEDT E/AndroidRuntime:     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
11-17 18:23:22.752 16274-16274/ph.reggis.FEDT E/AndroidRuntime:     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
11-17 18:23:22.752 16274-16274/ph.reggis.FEDT E/AndroidRuntime:  Caused by: java.lang.IllegalArgumentException: Unable to create call adapter for class b.a
11-17 18:23:22.752 16274-16274/ph.reggis.FEDT E/AndroidRuntime:     for method InsularFMService.getNews
11-17 18:23:22.752 16274-16274/ph.reggis.FEDT E/AndroidRuntime:     at retrofit.Utils.methodError(Unknown Source)
11-17 18:23:22.752 16274-16274/ph.reggis.FEDT E/AndroidRuntime:     at retrofit.MethodHandler.createCallAdapter(Unknown Source)
11-17 18:23:22.752 16274-16274/ph.reggis.FEDT E/AndroidRuntime:     at retrofit.MethodHandler.create(Unknown Source)
11-17 18:23:22.752 16274-16274/ph.reggis.FEDT E/AndroidRuntime:     at retrofit.Retrofit.loadMethodHandler(Unknown Source)
11-17 18:23:22.752 16274-16274/ph.reggis.FEDT E/AndroidRuntime:     at retrofit.Retrofit$1.invoke(Unknown Source)
11-17 18:23:22.752 16274-16274/ph.reggis.FEDT E/AndroidRuntime:     at java.lang.reflect.Proxy.invoke(Proxy.java:393)
11-17 18:23:22.752 16274-16274/ph.reggis.FEDT E/AndroidRuntime:     at $Proxy0.getNews(Unknown Source)
11-17 18:23:22.752 16274-16274/ph.reggis.FEDT E/AndroidRuntime:     at ph.reggis.FEDT.b.C.d(Unknown Source)
11-17 18:23:22.752 16274-16274/ph.reggis.FEDT E/AndroidRuntime:     at ph.reggis.FEDT.view.fragment.NotificationListFragment.t(Unknown Source)
11-17 18:23:22.752 16274-16274/ph.reggis.FEDT E/AndroidRuntime:     at ph.reggis.FEDT.view.fragment.NotificationListFragment.l(Unknown Source)
11-17 18:23:22.752 16274-16274/ph.reggis.FEDT E/AndroidRuntime:     at android.support.v4.b.B.a(Unknown Source)
11-17 18:23:22.752 16274-16274/ph.reggis.FEDT E/AndroidRuntime:     at android.support.v4.b.B.a(Unknown Source)
11-17 18:23:22.752 16274-16274/ph.reggis.FEDT E/AndroidRuntime:     at android.support.v4.b.B.a(Unknown Source)
11-17 18:23:22.752 16274-16274/ph.reggis.FEDT E/AndroidRuntime:     at android.support.v4.b.B.i(Unknown Source)
11-17 18:23:22.752 16274-16274/ph.reggis.FEDT E/AndroidRuntime:     at android.support.v4.b.y.i(Unknown Source)
11-17 18:23:22.752 16274-16274/ph.reggis.FEDT E/AndroidRuntime:     at android.support.v4.b.t.onPostResume(Unknown Source)
11-17 18:23:22.752 16274-16274/ph.reggis.FEDT E/AndroidRuntime:     at android.support.v7.a.B.onPostResume(Unknown Source)
11-17 18:23:22.752 16274-16274/ph.reggis.FEDT E/AndroidRuntime:     at android.app.Activity.performResume(Activity.java:6336)
11-17 18:23:22.752 16274-16274/ph.reggis.FEDT E/AndroidRuntime:      at android.app.ActivityThread.performResumeActivity(ActivityThread.java:3092)
11-17 18:23:22.752 16274-16274/ph.reggis.FEDT E/AndroidRuntime:  Caused by: java.lang.IllegalStateException: Observable return type must be parameterized as Observable or Observable