《Android进阶之光》--RxJava结合Retrofit访问网络
1)配置
dependencies{
...
compile 'io.reactivex:rxjava:1.2.0'
compile 'io.reactivex:rxandroid:1.2.1'
compile 'com.squareup.retrofit2:retorfit:2.1.0'
compile 'com.squareup.retrofit2:converter-gson:2.1.0'
compile 'com.squareup.retrofit2:adapter-rxjava:2.1.0'
}
2)修改请求网络接口
Retrofit请求接口返回Call。若结合RxJava,则需要把Call改为Observable
public interface IpServiceForPost{ @FormUrlEncoded @POST("getIpInfo.php") Observable<IpModel> getIpMsg(@Field("ip") String first); }
3)修改请求网络方法
private void postIpInformation(String ip){ String url = "http://ip.taobao.com/service/"; Retrofit retrofit = new Retrofit.Builder().baseUrl(url).addConverterFactory(GsonConverterFactory.create()) .addCallAdapterFactory(RxJavaCallAdapterFactory.create()).build(); IpServiceForPost ipService = retrofit.create(IpServcieForPost.class); subscription=ipService.getIpMsg(ip).subscribeOn(Schedulers.io()).observeOn(AndroidSchedulers.mainThread()) .subscribe(new Subscriber<IpModel>(){ @Override public void onCompleted(){ Log.d(TAG,"onCompleted"); } @Override public void onError(Throwable e){ Log.d(TAG,"onError"); } @Override public void onNext(IpModel ipModel){ String country=ipModel.getData().getCountry(); Toast.makeText(getApplicationContext(),country,Toast.LENGTH_SHORT).show(); } }); }
4)请求返回数据格式封装
public class IpModel{ private int code; private IpData data; public void setCode(int code){ this.code = code; } public int getCode(){ return this.code; } ... }
public class HttpResult<T>{ private int code; private T data; public int getCode(){ return code; } public void setCode(int code){ this.code = code; } public T getData(){ return data; } public void setData(T data){ this.data = data; } }
public interface IpServiceForPost{ @FormUrlEncoded @POST("getIpInfo.php") Observable<HttpResult<IpData>> getIpMsg(@Field("ip") String first); }
private void postIpInformation(String ip){ ... subscription=ipService.getIpMsg(ip).subscribeOn(Schedulers.io()) .observeOn(AndroidSchedulers.mainThread()).subscribe(new Subscriber<HttpResult<IpData>>(){ @Override public void onCompleted(){ } @Override public void onError(Throwable e){ } @Override public void onNext(HttpResult<IpData> ipDataHttpResult){ IpData data=ipDataHttpResult.getData(); Toast.matkText(getApplicationContext(),data.getCountry(),Toast.LENGTH_SHORT).show(); } }); }
5)取消请求
@Override public void onStop(){ super.onStop(); if(subscription!=null && subscription.isUnsubscribed()){ subscription.unsubscribe(); } }
private CompositeSubscription compositeSubscription = new CompositeSubscription(); ... //发送请求的地方,将返回的subscription添加到compositeSubscription中 compositeSubscription.add(subscription); ... //取消所有请求 @Override public void onStop(){ super.onStop(); compositeSubscription.unsubscribe(); }