Question

我在尝试创建Subscriber并订阅时收到如下错误消息。

can not resolve method 'subscribe(anonymous rx.Subscriber<GooglePlacesResponse>)'

的build.gradle

// JSON Parsing
compile 'com.google.code.gson:gson:2.6.1'
compile 'com.squareup.retrofit2:retrofit:2.1.0'
compile 'com.squareup.retrofit2:converter-gson:2.1.0'
compile 'com.squareup.retrofit2:adapter-rxjava:2.1.0'
compile 'io.reactivex.rxjava2:rxjava:2.0.2'
compile 'io.reactivex.rxjava2:rxandroid:2.0.1

GooglePlaceService.java

public interface GooglePlaceService {

    public static final String GOOGLE_API_KEY = "google_api_key";

    @GET("maps/api/place/nearbysearch/json?radius=2000&key="+GOOGLE_API_KEY)
    Observable<GooglePlacesResponse> getNearbyPlaces(@Query("location") String location);
}

ApiUtils.java

public class ApiUtils {    

    public static final String GOOGLE_PLACE_BASE_URL = "https://maps.googleapis.com/";

    public static GooglePlaceService getGooglePlaceService() {
        return getClient(GOOGLE_PLACE_BASE_URL).create(GooglePlaceService.class);
    }

    public static Retrofit getClient(String baseUrl) {

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

        return retrofit;
    }
}

可观察的Observable<GooglePlacesResponse>如下所示。

Observable<GooglePlacesResponse> mGooglePlacesResponseObervable = ApiUtils.getGooglePlaceService().getNearbyPlaces(latitude + "," + longitude);

mGooglePlacesResponseObervable
   .subscribeOn(Schedulers.io())
   .observeOn(AndroidSchedulers.mainThread())
   .subscribe(new Subscriber<GooglePlacesResponse>() { <-- Error here : can not resolve method `subscribe(anonymous rx.Subscriber<GooglePlacesResponse>)`

            @Override
            public void onNext(GooglePlacesResponse googlePlacesResponse) {

                }

            @Override
            public void onCompleted() {

            }

            @Override
            public void onError(Throwable e) {

            }
     });

Answer 1

适配器具有版本<html lang="en"> <head> <meta charset="UTF-8" /> </head> <body> <div class="myDiv"> <img src="http://www.slidesjs.com/img/example-slide-350-2.jpg" data-tablet="http://www.w3schools.com/w3css/img_mountains_wide.jpg" data-mobil="http://wowslider.com/sliders/demo-23/data1/images/landscape1344620.jpg"> <img src="http://www.w3schools.com/w3css/img_fjords_wide.jpg" data-tablet="http://semtasoft.com/wp-content/gallery/semtasoft/Slide-img-4.jpg" data-mobil="http://2.bp.blogspot.com/-0xYI1ZJjncM/U0eM2WjhLBI/AAAAAAAAIRk/ytNDG8Nf1x4/s1600/slide-img-1.jpg"> <img src="http://hdimagesnew.com/wp-content/uploads/2015/11/New-Wallpapers-HD.jpg" data-mobil="http://2.bp.blogspot.com/-0xYI1ZJjncM/U0eM2WjhLBI/AAAAAAAAIRk/ytNDG8Nf1x4/s1600/slide-img-1.jpg"> <img src="http://csgowallpapers.com/assets/images/original/mossawi_697490225546_20161227125412_701766109559.png" data-tablet="http://2.bp.blogspot.com/-0xYI1ZJjncM/U0eM2WjhLBI/AAAAAAAAIRk/ytNDG8Nf1x4/s1600/slide-img-1.jpg"> <img src="http://csgowallpapers.com/assets/images/original/mossawi_521575293969_20170108191041_920035389717.png"> </div> <script src="https://code.jquery.com/jquery-3.1.1.min.js"></script> </body> </html>的事实并不意味着它适用于RxJava 2

您应该将官方适配器用于第二个版本的RxJava：

2.*.*

然后你可以添加工厂：

compile 'com.squareup.retrofit2:adapter-rxjava2:2.3.0 // works with RxJava 2

这是full answer。

Answer 2

RxJavaCallAdapter返回RxJava 1 Observable。您应该将RxJava2CallAdapter用于RxJava2。看起来还没有正式的改版版本，但是在2.1.1快照中。您可以自己编译适配器，也可以从sonatype snapshot repo中删除依赖项。

将以下内容添加到repositories -

中的build.gradle部分

repositories {
    // Other repos...
    maven {
        url = "https://oss.sonatype.org/content/repositories/snapshots/"
    }
}

将您的改装依赖项更新为2.1.1-SNAPSHOT版本。请注意，我们还将adapter-rxjava更改为adapter-rxjava2 -

compile 'com.squareup.retrofit2:retrofit:2.1.1-SNAPSHOT'
compile 'com.squareup.retrofit2:converter-gson:2.1.1-SNAPSHOT'
compile 'com.squareup.retrofit2:adapter-rxjava2:2.1.1-SNAPSHOT'

并更新您的改装构建器以使用RxJava2CallAdapterFactory -

Retrofit retrofit = new Retrofit.Builder()
            .addCallAdapterFactory(RxJava2CallAdapterFactory.create())
            .addConverterFactory(GsonConverterFactory.create())
            .baseUrl(baseUrl)
            .build();

发布2.1.1后，您可以返回常规依赖项。

Answer 3

这是我的build.gradle设置，也许这会有助于其他人

depencies{
compile 'com.squareup.retrofit2:retrofit:2.3.0'
compile 'com.squareup.retrofit2:converter-gson:2.1.0'
compile 'com.squareup.retrofit2:adapter-rxjava2:2.3.0'
compile 'io.reactivex.rxjava2:rxandroid:2.0.1'
compile 'com.squareup.okhttp3:okhttp:3.8.0'
compile 'com.squareup.okhttp3:logging-interceptor:3.8.0'}

Answer 4

如果您不想更新改装版本。 Here是一个非常好的库，可以转换为RxJava1.x到RxJava2.x个对象。首先，添加这个 compile "com.github.akarnokd:rxjava2-interop:0.10.2"
到build.gradle和使用方法
RxJavaInterop.toV2Observable(observableRx1)
转换为Rx2 Observables。

Retrofit2 + RxJava2 + RxAndroid错误

4 个答案: