RxJava2.0+Retrofit使用

最新推荐文章于 2023-03-01 13:24:20 发布

原创最新推荐文章于 2023-03-01 13:24:20 发布 · 284 阅读

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本文介绍使用RxJava与Retrofit实现异步数据获取的方法。通过示例代码展示了如何配置Retrofit并结合RxJava进行API调用，同时比较了使用Observable与Flowable的不同之处。

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依赖：

compile "io.reactivex.rxjava2:rxjava:2.1.1"
compile 'io.reactivex.rxjava2:rxandroid:2.0.1'

compile 'com.squareup.retrofit2:retrofit:2.3.0'
compile 'com.squareup.retrofit2:converter-gson:2.3.0'
compile 'com.squareup.retrofit2:adapter-rxjava2:2.3.0'

APi接口

package com.example.rxjava20retrofit;

import io.reactivex.Flowable;
import io.reactivex.Observable;
import retrofit2.http.GET;

/**
 * Created by xsj on 2017/12/6.
 */

public interface ApiNet {

    @GET("nba/?key=71e58b5b2f930eaf1f937407acde08fe&num=10")
    Observable<UserBean<GeryList>> getData();

    @GET("nba/?key=71e58b5b2f930eaf1f937407acde08fe&num=10")
    Flowable<UserBean<GeryList>> getData1();
}

主代码文件

package com.example.rxjava20retrofit;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;


import java.util.List;

import io.reactivex.Flowable;
import io.reactivex.Observable;
import io.reactivex.Observer;
import io.reactivex.android.schedulers.AndroidSchedulers;
import io.reactivex.disposables.Disposable;
import io.reactivex.schedulers.Schedulers;
import io.reactivex.subscribers.DisposableSubscriber;
import retrofit2.Retrofit;
import retrofit2.adapter.rxjava2.RxJava2CallAdapterFactory;
import retrofit2.converter.gson.GsonConverterFactory;

public class MainActivity extends AppCompatActivity implements View.OnClickListener {
    private Disposable d;
    private  DisposableSubscriber<UserBean<GeryList>> disposableSubscriber;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Button but1= (Button) findViewById(R.id.but1);
        Button but2= (Button) findViewById(R.id.but2);

        but1.setOnClickListener(this);
        but2.setOnClickListener(this);
    }

    @Override
    public void onClick(View view) {
        switch (view.getId()){
            case R.id.but1:

                //Observable被观察者请求数据
                Retrofit retrofit = new Retrofit.Builder()
                        .addConverterFactory(GsonConverterFactory.create())
                        .addCallAdapterFactory(RxJava2CallAdapterFactory.create())
                        .baseUrl("http://api.tianapi.com/")
                        .build();
                ApiNet apiNet = retrofit.create(ApiNet.class);
                Observable<UserBean<GeryList>> data = apiNet.getData();

                data.subscribeOn(Schedulers.io())
                        .observeOn(AndroidSchedulers.mainThread())
                        .subscribe(new Observer<UserBean<GeryList>>() {
                            @Override
                            public void onSubscribe(Disposable d) {
                                MainActivity.this.d=d;
                            }

                            @Override
                            public void onNext(UserBean<GeryList> value) {
                                List<GeryList> newslist = value.getNewslist();
                                if(newslist!=null){
                                    Toast.makeText(MainActivity.this,newslist.size()+"",Toast.LENGTH_SHORT).show();
                                    Log.e("TAG","请求到"+newslist.size()+"条数据");
                                }
                            }

                            @Override
                            public void onError(Throwable e) {
                                Log.e("TAG",e.getMessage());
                            }

                            @Override
                            public void onComplete() {

                            }
                        });
                break;

            case R.id.but2:
                //Observable被观察者请求数据
                Retrofit build = new Retrofit.Builder()
                        .addConverterFactory(GsonConverterFactory.create())
                        .addCallAdapterFactory(RxJava2CallAdapterFactory.create())
                        .baseUrl("http://api.tianapi.com/")
                        .build();

                ApiNet apiNet1 = build.create(ApiNet.class);

                //subscribeWith直接代替
                // DisposableSubscriber
                Flowable<UserBean<GeryList>> data1 = apiNet1.getData1();
                disposableSubscriber = data1.subscribeOn(Schedulers.io())
                        .observeOn(AndroidSchedulers.mainThread())
                        .subscribeWith(new DisposableSubscriber<UserBean<GeryList>>() {
                            @Override
                            public void onNext(UserBean<GeryList> geryListUserBean) {
                                List<GeryList> newslist = geryListUserBean.getNewslist();
                                Toast.makeText(MainActivity.this, newslist.size() + "", Toast.LENGTH_SHORT).show();
                                Log.e("TAG", "请求到" + newslist.size() + "条数据");
                            }

                            @Override
                            public void onError(Throwable t) {
                                Log.e("TAG", t.getMessage());
                            }

                            @Override
                            public void onComplete() {

                            }
                        });
                break;
        }
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        //释放资源
        if(d!=null){
            if(d.isDisposed()){
                d.dispose();
            }
        }

        if(disposableSubscriber!=null){
            if(disposableSubscriber.isDisposed()){
                disposableSubscriber.dispose();
            }
        }
    }
}