Loại trả về quan sát phải được tham số hóa là Quan sát <Foo> hoặc Có thể quan sát <? mở rộng Foo>

Question

Tôi đang sử dụng trang bị thêm 2.0.0-beta2 và bản dựng gỡ lỗi đang hoạt động đúng cách nhưng tôi gặp lỗi sau khi phát hành bản dựng với Proguard.

Đây là lỗi nhật ký được cập nhật.

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<Foo> or Observable<? extends Foo> 
11-17 18:23:22.752 16274-16274/ph.reggis.FEDT E/AndroidRuntime:  at retrofit.RxJavaCallAdapterFactory.get(Unknown Source) 
11-17 18:23:22.752 16274-16274/ph.reggis.FEDT E/AndroidRuntime:  at retrofit.Retrofit.nextCallAdapter(Unknown Source) 
11-17 18:23:22.752 16274-16274/ph.reggis.FEDT E/AndroidRuntime:  at retrofit.Retrofit.callAdapter(Unknown Source) 
11-17 18:23:22.752 16274-16274/ph.reggis.FEDT E/AndroidRuntime:   ... 28 more 

Interface:

@GET("news") 
Observable<News> getNews(); 

Fragment:

Retrofit retrofit = new Retrofit.Builder() 
     .baseUrl(Constant.WS_URL_BASE) 
     .addConverterFactory(GsonConverterFactory.create()) 
     .addCallAdapterFactory(RxJavaCallAdapterFactory.create()) 
     .build(); 

InsularFMService fmService = retrofit.create(InsularFMService.class); 

//Observable<News> observable = fmService.getNews(); 
//subscription = observable. - ALSO NOT WORKING 

subscription = fmService.getNews(). 
     .observeOn(AndroidSchedulers.mainThread()) 
     .subscribeOn(appController.getDefaultScheduler()) 
     .subscribe(new Subscriber<News>() {... 

Graddle:

compile "com.squareup.retrofit:retrofit:2.0.0-beta2" 
compile "com.squareup.retrofit:converter-gson:2.0.0-beta2" 
compile "com.squareup.retrofit:adapter-rxjava:2.0.0-beta2" 

Proguard:

# Fixed: Caused by: java.lang.NoSuchFieldException: No field producerIndex 
-keepclassmembers class rx.internal.util.unsafe.*ArrayQueue*Field* { 
    long producerIndex; 
    long consumerIndex; 
} 
-keepclassmembers class rx.internal.util.unsafe.BaseLinkedQueueProducerNodeRef { 
    long producerNode; 
    long consumerNode; 
} 

Answer 1

Bây giờ, tính năng này hoạt động bằng cách đặt các thuộc tính này bên trong Proguard.

# Application classes that will be serialized/deserialized over Gson 
-keep class ph.reggis.FEDT.model.api.** { *; } 

Dưới đây là toàn bộ các thiết lập

##---------------Begin: proguard configuration for Gson ---------- 
# Gson uses generic type information stored in a class file when working with fields. Proguard 
# removes such information by default, so configure it to keep all of it. 
-keepattributes Signature 
-keepattributes *Annotation* 

# Gson specific classes 
-keep class sun.misc.Unsafe { *; } 

# Application classes that will be serialized/deserialized over Gson 
-keep class ph.reggis.FEDT.model.api.** { *; } 

##---------------End: proguard configuration for Gson ----------