Retrofit+RxJava的联合使用

依赖库

//rxjava和retrofitcompile 'io.reactivex:rxjava:1.1.0'compile 'io.reactivex:rxandroid:1.1.0'compile'com.squareup.retrofit2:retrofit:2.0.0-beta4'compile 'com.squareup.retrofit2:converter-gson:2.0.0-beta4'compile 'com.squareup.retrofit2:adapter-rxjava:2.0.0-beta4'compile 'com.google.code.gson:gson:2.6.2'compile 'com.jakewharton:butterknife:7.0.1'

在清单文件中配置权限

<uses-permission android:name="android.permission.INTERNET" />

• 创建接口,配置参数

以此接口为例 https://api.douban.com/v2/movie/top250?start=0&count=10

public interface RxjavaService {    @GET("top250")    Observable<RetrofitEntity> getRxjavaData(@Query("start") int start, @Query("count") int count);}

如果只是retrofit,而没有用到rxjava时接口可以写成:

public interface RetrofitService {    @GET("top250")    Call<RetrofitEntity> getRetrofitData(@Query("start")int start,@Query("count")int count);}

创建javabean类 RetrofitEntity
因为是get请求,可以在网页上获取数据,然后生成javabea类’

在mainActivity中的使用

private void gedatas() {        //添加rxjava后的请求        String baseUrl = "https://api.douban.com/v2/movie/";        final Retrofit retrofit = new Retrofit.Builder()                .baseUrl(baseUrl)                .addConverterFactory(GsonConverterFactory.create())                .addCallAdapterFactory(RxJavaCallAdapterFactory.create())                .build();        RxjavaService server = retrofit.create(RxjavaService.class);        server.getRxjavaData(0,10)                .subscribeOn(Schedulers.io())                .observeOn((AndroidSchedulers.mainThread()))                .subscribe(new Subscriber<RetrofitEntity>() {                    @Override                    public void onCompleted() {                    }                    @Override                    public void onError(Throwable e) {                    }                    @Override                    public void onNext(RetrofitEntity retrofitEntity) {                    mTextview.setText(retrofitEntity.getSubjects().get(0).getTitle());                    }                });    }

正常情况下,到此处就结束了,撒有哪啦

封装

• 将retrofit和rxjavaserver放在同一个方法中

public class HttpMethods {    public static final String BASE_URL="https://api.douban.com/v2/movie/";    private static final int DEFAULT_TIMEOUT=5;    private Retrofit mRetrofit;    private RxjavaService mRxjavaService;    private HttpMethods(){        OkHttpClient.Builder httpClientBuilder = new OkHttpClient().newBuilder();        httpClientBuilder.connectTimeout(DEFAULT_TIMEOUT, TimeUnit.SECONDS);        mRetrofit = new Retrofit.Builder()                .client(httpClientBuilder.build())                .addConverterFactory(GsonConverterFactory.create())                .addCallAdapterFactory(RxJavaCallAdapterFactory.create())                .baseUrl(BASE_URL)                .build();        mRxjavaService=mRetrofit.create(RxjavaService.class);    }    private static class singletonHolder{        private static final HttpMethods INSTANCE = new HttpMethods();    }    public static HttpMethods getInstance(){        return singletonHolder.INSTANCE;    }    public void getRxjavaData(Subscriber<RetrofitEntity> subscriber,int start,int count){        mRxjavaService.getRxjavaData(start,count)                .subscribeOn(Schedulers.io())                .unsubscribeOn(Schedulers.io())                .observeOn(AndroidSchedulers.mainThread())                .subscribe(subscriber);    }} 

• 封装后再mainactivity中的使用

public void getdata2() {        //利用封装后的retrofit来请求        mSubscriber = new Subscriber<RetrofitEntity>() {            @Override            public void onCompleted() {            }            @Override            public void onError(Throwable e) {            }            @Override            public void onNext(RetrofitEntity retrofitEntity) {                mTextview.setText(retrofitEntity.getSubjects().get(1).getTitle());            }        };        HttpMethods.getInstance().getRxjavaData(mSubscriber,0,10);    }

这次真的结束了,当然,这只是一次简单的解析,想了解更多可以访问:
http://gank.io/post/56e80c2c677659311bed9841