RxJava timeout 方法使用

observable.timeout(time)

--- onError(msg:The source did not signal an event for time milliseconds and has been terminated.);

observable.timeout(time).onErrorResumeNext(return (Observable)null)

--- onErrorResumeNext(msg:The source did not signal an event for time milliseconds and has been terminated.)

--- onError(msg:Observable is null)

observable.timeout(time).onErrorResumeNext(return observable)

--- onErrorResumeNext(msg:The source did not signal an event for time milliseconds and has been terminated.)

--- onNext()

--- onCompleted()

如果接口本身有错误或者说是非.timeout()超时对应的三种情况，这里以404错误为例

总结：只写timeout的话，一旦触发，就会直接触发onError并结束此次接口访问；想要继续访问接口必须要在timeout方法后.onErrorResumeNext并返回此次访问所使用的的observable对象；意思就是：我超时了但是我把此次访问丢了出来，你可以继续执行未完成的访问

注意点：onErrorResumeNext必须return observable对象，return null 的话依旧会走到onError中，意思就是我知道我超时了，但你没告诉我下一步该怎么办。

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