RxJava2正史Ⅰ：FlatMap操作符 | Jack's blog

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https://adajqd.github.io/2019/01/16/2019-1-16-RxJava2%E6%AD%A3%E5%8F%B2%E2%85%A0%EF%BC%9AFlatMap%E6%93%8D%E4%BD%9C%E7%AC%A6/

先来看一下使用demo 12345678910111213Observable.create(new ObservableOnSubscribe<String>() { @OverRide public void subscribe(ObservableEmitter<String> emitter) throws Exception { emi