package com.zht.baseproject.http;
import android.util.Log;
import rx.Observable;
import rx.Subscriber;
import rx.android.schedulers.AndroidSchedulers;
import rx.functions.Func1;
import rx.schedulers.Schedulers;
/**
* Created by ZHT on 2017/4/19.
* 对错误进行统一处理，并对返回的数据HttpResult中获取Results
*/
public class HttpTransformer<R extends HttpResult<T>, T> implements Observable.Transformer<R, T> {
private static final String TAG = "HttpTransformer";
@Override
public Observable<T> call(Observable<R> rObservable) {
return rObservable.flatMap(new Func1<R, Observable<T>>() {
@Override
public Observable<T> call(R r) {
Log.d(TAG, r.isError() ? "HttpResult is error" : "HttpResult is right");
if (r.isError()) {
return Observable.error(new ApiException("网络出错"));
} else {
return createData(r.getResults());
}
}
}).subscribeOn(Schedulers.io()).unsubscribeOn(Schedulers.io()).subscribeOn(AndroidSchedulers.mainThread()).observeOn(AndroidSchedulers.mainThread());
}
private Observable<T> createData(final T data) {
return Observable.create(new Observable.OnSubscribe<T>() {
@Override
public void call(Subscriber<? super T> subscriber) {
try {
subscriber.onNext(data);
} catch (Exception e) {
subscriber.onError(e);
} finally {
subscriber.onCompleted();
}
}
});
}
}
