rxjava2 + retrofit2 + okhttp3遇到的问题

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上代码：

//手动创建一个OkHttpClient并设置超时时间OkHttpClient.Builder httpClientBuilder = new OkHttpClient.Builder();httpClientBuilder.connectTimeout(3, TimeUnit.SECONDS);httpClientBuilder.readTimeout(2, TimeUnit.SECONDS);httpClientBuilder.writeTimeout(2, TimeUnit.SECONDS);httpClientBuilder.addInterceptor(new HttpLoggingInterceptor().setLevel(HttpLoggingInterceptor.Level.BODY)).build();Retrofit retrofit = new Retrofit.Builder()        .client(httpClientBuilder.build())        .addConverterFactory(GsonConverterFactory.create())        .addCallAdapterFactory(RxJava2CallAdapterFactory.create())        .baseUrl("http://alpha.xxxx.com:8021")        .build();INetService tService = retrofit.create(INetService.class);Observer<AdPicResponse>  observer = new Observer<AdPicResponse>(){    @Override    public void onSubscribe(Disposable d){    }    @Override    public void onNext(AdPicResponse value){            }    @Override    public void onError(Throwable e){            }    @Override    public void onComplete(){            }};tService .loadStartInfo(params)
        .subscribeOn(Schedulers.io())        .unsubscribeOn(Schedulers.io())        .observeOn(AndroidSchedulers.mainThread())        .subscribe(observer);

问题1：

E/CrashHandlerManager: 保存信息 : java.lang.IllegalArgumentException: Unable to create call adapter for
io.reactivex.Observable<com.mxxxe.xxx.launcher.startinfo.bean.xxxResponse>
for method INetService.loadStartInfo
at retrofit2.ServiceMethod$Builder.methodError(ServiceMethod.java:751)
at retrofit2.ServiceMethod$Builder.createCallAdapter(ServiceMethod.java:236)
at retrofit2.ServiceMethod$Builder.build(ServiceMethod.java:161)

解决：

compile 'com.squareup.retrofit2:adapter-rxjava2:2.2.0'

addCallAdapterFactory(RxJava2CallAdapterFactory.create())

问题2：

NoClassDefFoundError: Failed resolution of: Lokhttp3/internal/Platform

解决：

compile 'com.squareup.okhttp3:logging-interceptor:3.4.1'compile 'com.squareup.okhttp3:okhttp:3.4.1'

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