无法为 io.reactivex.Single 创建呼叫适配器



我想通过改造连接到服务器,当我使用调用并且一切都很好时 rxjava.it 工作,但是当尝试使用rxjava时,它会遇到麻烦。错误文本:

找不到 io.reactivex.Single 的呼叫适配器

在build.gradle中,我实现了改造适配器,但我不知道问题是什么。这是我的毕业生:

implementation 'com.squareup.picasso:picasso:2.71828'
implementation 'io.reactivex.rxjava2:rxandroid:2.1.1'
implementation 'io.reactivex.rxjava2:rxjava:2.2.8'
implementation 'com.squareup.retrofit2:retrofit:2.5.0'
implementation 'com.google.code.gson:gson:2.8.5'
implementation 'com.squareup.retrofit2:adapter-rxjava:2.5.0'
implementation 'com.squareup.retrofit2:converter-gson:2.5.0'
implementation "android.arch.persistence.room:runtime:1.1.1"
annotationProcessor "android.arch.persistence.room:compiler:1.1.1"

API 客户端代码:

public class ApiClient {
public static final String BASE_URL="http://192.168.1.100/digikala/";
private static Retrofit retrofit=null;
public static Retrofit getClient(){
    if(retrofit==null){
        retrofit=new Retrofit.Builder()
                .addConverterFactory(GsonConverterFactory.create())
                .addCallAdapterFactory(RxJavaCallAdapterFactory.create())
                .baseUrl(BASE_URL)
                .build();
    }
    return  retrofit;
}

API 服务代码:

public interface ApiService {
   @GET("readamazing.php")
   Single<List<Product>> getSingleProducts();
 }

主要活动代码:

ApiService apiService=ApiClient.getClient().create(ApiService.class);
apiService.getSingleProducts().subscribeOn(Schedulers.newThread())
    .observeOn(AndroidSchedulers.mainThread())
    .subscribe(new SingleObserver<List<Product>>() {
        @Override
        public void onSubscribe(Disposable d) {
        }
        @Override
        public void onSuccess(List<Product> products) {
            Log.i("LOG", "onSuccess: "+products.toString());
        }
        @Override
        public void onError(Throwable e) {
            Log.i("LOG", "onSuccess: "+e.toString());
        }
    });

使用 RxJava2CallAdapterFactory 而不是 RxJavaCallAdapterFactory,因为使用了RxJava2

.addCallAdapterFactory(RxJava2CallAdapterFactory.create())

Retrofit.Builder().

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