rxjava2 与 retrofit 网络请求
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compile 'io.reactivex.rxjava2:rxandroid:2.0.1'compile 'io.reactivex.rxjava2:rxjava:2.1.7'compile 'com.squareup.retrofit2:retrofit:2.3.0'compile 'com.google.code.gson:gson:2.8.2'compile 'com.squareup.retrofit2:converter-gson:2.3.0'compile 'com.squareup.retrofit2:adapter-rxjava2:2.3.0'<Button android:id="@+id/btn" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="Hello World!" app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintLeft_toLeftOf="parent" app:layout_constraintRight_toRightOf="parent" app:layout_constraintTop_toTopOf="parent" />
MainActivityimport android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.Toast;import com.google.gson.Gson;import java.io.IOException;import java.util.ArrayList;import java.util.concurrent.TimeUnit;import io.reactivex.BackpressureStrategy;import io.reactivex.Flowable;import io.reactivex.FlowableEmitter;import io.reactivex.FlowableOnSubscribe;import io.reactivex.Observable;import io.reactivex.ObservableEmitter;import io.reactivex.ObservableOnSubscribe;import io.reactivex.ObservableSource;import io.reactivex.Observer;import io.reactivex.android.schedulers.AndroidSchedulers;import io.reactivex.disposables.Disposable;import io.reactivex.functions.Action;import io.reactivex.functions.BiFunction;import io.reactivex.functions.Consumer;import io.reactivex.functions.Function;import io.reactivex.schedulers.Schedulers;import okhttp3.ResponseBody;import retrofit2.Call;import retrofit2.Callback;import retrofit2.Response;import retrofit2.Retrofit;import retrofit2.adapter.rxjava2.RxJava2CallAdapterFactory;import retrofit2.converter.gson.GsonConverterFactory;public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); Button button = findViewById(R.id.btn); button.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) {// zip1();//rxjava 与 retrofit网络请求结合// onObserverable();//观察者 被观察者// test1();//休眠// test2();//一共只存储128个 从下标0到下标126 加上 最后一个下标// test3();// test4();// test5();// zip(); concatMap(); } }); } private void zip1() { Retrofit retrofit = new Retrofit.Builder() .baseUrl("http://m.yunifang.com") .addConverterFactory(GsonConverterFactory.create()) // call 转化成 Observerable .addCallAdapterFactory(RxJava2CallAdapterFactory.create()) .build(); IInterface iInterface = retrofit.create(IInterface.class); iInterface.get1() // 指定 被观察者 所在一个IO线程 .subscribeOn(Schedulers.io()) //指定观察者所在 主线程 .observeOn(AndroidSchedulers.mainThread()) .subscribe(new Consumer<Bean>() { @Override public void accept(Bean bean) throws Exception { Toast.makeText(MainActivity.this, "" + bean.getData().getSubjects().get(0).getDetail(), Toast.LENGTH_SHORT).show(); System.out.println("bean = " + bean.toString()); } }); } Disposable disposable = null; private void onObserverable() { //创建了一个被观察者 Observable<String> observable = Observable.create(new ObservableOnSubscribe<String>() { @Override public void subscribe(ObservableEmitter<String> e) throws Exception {// e 发射器 //发送onnext事件 for (int i = 0; i < 100; i++) {// if(i == 50){// disposable.dispose();//断开 被观察者和观察者之间的关系// } e.onNext("" + i); if (i == 50) {// e.onComplete();//事件完成// e.onError(new Exception("1"));//发生异常 } //只要执行了 onComplete onError ， 后续在发送的onNext 事件， 再也无法接受 }// e.onError(new Exception(""));// e.onComplete(); } }); //创建观察者 Observer observer = new Observer<String>() { @Override public void onSubscribe(Disposable d) { disposable = d;// 断开 被观察者和观察者之间的关系// disposable.dispose(); // 判断 被观察者和观察者 之间是否还订阅关系// disposable.isDisposed() } @Override public void onNext(String s) { //用于接受 被观察者所方法的事件 System.out.println("Observer s = " + s); } @Override public void onError(Throwable e) { //发生异常 System.out.println("onError s = " + e.getMessage()); } @Override public void onComplete() {// 事件完成 System.out.println("onComplete s = "); } }; //订阅 observable.subscribe(observer); } private void test1() { Observable.create(new ObservableOnSubscribe<String>() { @Override public void subscribe(ObservableEmitter<String> e) throws Exception { System.out.println("Observable 0" + Thread.currentThread().getName()); for (int i = 0; i < 10; i++) { e.onNext(i + "");//要传到下面的内容 } System.out.println("Observable over 1"); }// subscribeOn 指定 被观察者所在的线程 }).subscribeOn(Schedulers.io())// 指定 观察者所在的线程 .observeOn(AndroidSchedulers.mainThread()) .subscribe(new Observer<String>() { @Override public void onSubscribe(Disposable d) { } @Override public void onNext(String s) { System.out.println("Observer 2" + Thread.currentThread().getName()); try { Thread.sleep(2000); } catch (InterruptedException e) { e.printStackTrace(); } System.out.println(" " + s);// s 是上面传下来的内容 } @Override public void onError(Throwable e) { } @Override public void onComplete() { } }); } private void test2() {//一共只存储128个 从下标0到下标126 加上 最后一个下标 Flowable.create(new FlowableOnSubscribe<String>() { @Override public void subscribe(FlowableEmitter<String> e) throws Exception { for (int i = 0; i < 500; i++) { e.onNext("" + i); } } }, BackpressureStrategy.LATEST) .subscribeOn(Schedulers.io()) .observeOn(AndroidSchedulers.mainThread()) .subscribe(new Consumer<String>() { @Override public void accept(String s) throws Exception { Thread.sleep(100); System.out.println("Consumer " + s); } }); } private void test3() { Flowable.create(new FlowableOnSubscribe<String>() { @Override public void subscribe(FlowableEmitter<String> e) throws Exception { e.onNext("onnext");// e.onError(new Exception("1"));// e.onComplete(); } }, BackpressureStrategy.BUFFER)// .subscribeOn(Schedulers.io())// .observeOn(AndroidSchedulers.mainThread()) .subscribe(new Consumer<String>() { @Override public void accept(String s) throws Exception {// onnext System.out.println("Consumer onnext" + s); } }, new Consumer<Throwable>() { @Override public void accept(Throwable throwable) throws Exception {// onerror System.out.println("Consumer onerror" + throwable.getMessage()); } }, new Action() { @Override public void run() throws Exception {// onComplet System.out.println("Consumer Action"); } }); } private void test4() { Flowable.create(new FlowableOnSubscribe<Integer>() { @Override public void subscribe(FlowableEmitter<Integer> e) throws Exception { e.onNext(1);// e.onError(new Exception("")); } }, BackpressureStrategy.BUFFER).subscribe(new Consumer<Integer>() { @Override public void accept(Integer integer) throws Exception { System.out.println(" onNext"); } }, new Consumer<Throwable>() { @Override public void accept(Throwable throwable) throws Exception { System.out.println(" onError"); } }); } private void test5() { Flowable.create(new FlowableOnSubscribe<String>() { @Override public void subscribe(final FlowableEmitter<String> e) throws Exception { Retrofit retrofit = new Retrofit.Builder() .baseUrl("http://m.yunifang.com") .build(); IInterface iInterface = retrofit.create(IInterface.class); iInterface.get().enqueue(new Callback<ResponseBody>() { @Override public void onResponse(Call<ResponseBody> call, Response<ResponseBody> response) { try { String result = response.body().string(); e.onNext(result); } catch (IOException e1) { e1.printStackTrace(); } } @Override public void onFailure(Call<ResponseBody> call, Throwable t) { } }); } }, BackpressureStrategy.BUFFER) .map(new Function<String, Bean>() { @Override public Bean apply(String s) throws Exception { Gson gson = new Gson(); return gson.fromJson(s, Bean.class); } }) .subscribeOn(Schedulers.io()) .observeOn(AndroidSchedulers.mainThread()) .subscribe(new Consumer<Bean>() { @Override public void accept(Bean bean) throws Exception { } }); } private void zip() { Observable<String> observable = Observable.create(new ObservableOnSubscribe<String>() { @Override public void subscribe(ObservableEmitter<String> e) throws Exception { e.onNext("1"); e.onNext("2"); e.onNext("3"); } }); Observable<String> observable1 = Observable.create(new ObservableOnSubscribe<String>() { @Override public void subscribe(ObservableEmitter<String> e) throws Exception { e.onNext("A"); e.onNext("B"); e.onNext("C"); } }); Observable.zip(observable, observable1, new BiFunction<String, String, String>() { @Override public String apply(String s, String s2) throws Exception { return s + s2; } }).subscribe(new Consumer<String>() { @Override public void accept(String s) throws Exception { System.out.println("s = " + s); } }); } private void concatMap() { Observable.create(new ObservableOnSubscribe<String>() { @Override public void subscribe(ObservableEmitter<String> e) throws Exception { e.onNext("1"); e.onNext("2"); e.onNext("3"); } }).concatMap(new Function<String, ObservableSource<ArrayList>>() { @Override public ObservableSource<ArrayList> apply(String s) throws Exception { ArrayList list = new ArrayList<>(); for (int i = 0; i < 3; i++) { list.add(s + " " + i); } return Observable.fromArray(list).delay(1, TimeUnit.SECONDS);// return null; } }).subscribe(new Consumer<ArrayList>() { @Override public void accept(ArrayList arrayList) throws Exception { for (int i = 0; i < arrayList.size(); i++) { System.out.println("arrayList = " + arrayList.get(i)); } } }); }}
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