Unable to create call adapter for class io.reactivex.Observable ; Unable to create call adapter for class io.reactivex.Observable ; Observable return type must be parameterized as Observable<Foo> or Observable<? extends Foo>

[zy623]

一旦开启混淆，就会无法调用接口，observable返回值没有泛型，但是泛型相关实体都已经配置不混淆。不太确定是不是gradle升级到8.6导致的问题，在8.6之前打的release版本都没有问题。

[zy623]

io.reactivex.exceptions.OnErrorNotImplementedException: The exception was not handled due to missing onError handler in the subscribe() method call. Further reading: https://github.com/ReactiveX/RxJava/wiki/Error-Handling | java.lang.IllegalArgumentException: Unable to create call adapter for class io.reactivex.Observable
for method ApiService.getYzm
at io.reactivex.internal.functions.Functions$OnErrorMissingConsumer.accept(Functions.java:704)
at io.reactivex.internal.functions.Functions$OnErrorMissingConsumer.accept(Functions.java:701)
at io.reactivex.internal.observers.LambdaObserver.onError(LambdaObserver.java:77)
at io.reactivex.internal.observers.LambdaObserver.onNext(LambdaObserver.java:67)
at io.reactivex.observers.SerializedObserver.onNext(SerializedObserver.java:111)
at io.reactivex.internal.operators.observable.ObservableThrottleFirstTimed$DebounceTimedObserver.onNext(ObservableThrottleFirstTimed.java:82)
at com.jakewharton.rxbinding2.view.ViewClickObservable$Listener.onClick(ViewClickObservable.java:39)
at android.view.View.performClick(View.java:7322)
at android.view.View.performClickInternal(View.java:7296)
at android.view.View.access$3600(View.java:839)
at android.view.View$PerformClick.run(View.java:28319)
at android.os.Handler.handleCallback(Handler.java:908)
at android.os.Handler.dispatchMessage(Handler.java:103)
at android.os.Looper.loop(Looper.java:219)
at android.app.ActivityThread.main(ActivityThread.java:8679)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:513)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1109)
Caused by: java.lang.IllegalArgumentException: Unable to create call adapter for class io.reactivex.Observable
for method ApiService.getYzm
at retrofit2.Utils.methodError(Utils.java:54)
at retrofit2.HttpServiceMethod.createCallAdapter(HttpServiceMethod.java:116)
at retrofit2.HttpServiceMethod.parseAnnotations(HttpServiceMethod.java:67)
at retrofit2.ServiceMethod.parseAnnotations(ServiceMethod.java:39)
at retrofit2.Retrofit.loadServiceMethod(Retrofit.java:202)
at retrofit2.Retrofit$1.invoke(Retrofit.java:160)
at java.lang.reflect.Proxy.invoke(Proxy.java:1006)
at $Proxy3.getYzm(Unknown Source)
at com.tjjt.jtjy.data.source.http.HttpDataSourceImpl.getYzm(HttpDataSourceImpl.java:104)
at com.tjjt.jtjy.data.HttpRepository.getYzm(HttpRepository.java:95)
at com.tjjt.jtjy.ui.login.LoginViewModel.getYzm(LoginViewModel.java:142)
at com.tjjt.jtjy.ui.login.LoginViewModel.access$300(LoginViewModel.java:41)
at com.tjjt.jtjy.ui.login.LoginViewModel$6.call(LoginViewModel.java:122)
at me.goldze.mvvmhabit.binding.command.BindingCommand.execute(BindingCommand.java:47)
at me.goldze.mvvmhabit.binding.viewadapter.view.ViewAdapter$2.accept(ViewAdapter.java:46)
at io.reactivex.internal.observers.LambdaObserver.onNext(LambdaObserver.java:63)
... 14 more
Caused by: java.lang.IllegalStateException: Observable return type must be parameterized as Observable or Observable<? extends Foo>
at retrofit2.adapter.rxjava2.RxJava2CallAdapterFactory.get(RxJava2CallAdapterFactory.java:118)
at retrofit2.Retrofit.nextCallAdapter(Retrofit.java:253)
at retrofit2.Retrofit.callAdapter(Retrofit.java:237)
at retrofit2.HttpServiceMethod.createCallAdapter(HttpServiceMethod.java:114)
... 28 more