Retrofit+RxJava的联合使用

依赖库

//rxjava和retrofit
compile '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