（五）RxJava操作符：merge合并操作符

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    前面已经介绍过一个数据合并的操作符Zip，还望大家不要跟Merge操作符混淆，Merge其实只是将多个Obsevables的输出序列变为一个，方便订阅者统一处理，对于订阅者来说就仿佛只订阅了一个观察者一样。

    还是直接看Demo比较清晰：

Observable.merge(
        getDataFromLocation(),
        getDataFromNet()
).compose(this.>bindToLifecycle())
        .subscribeOn(Schedulers.io())
        .observeOn(AndroidSchedulers.mainThread())
        .subscribe(new Action1>() {
        @Override
        public void call(List contacters) {
                initPage(contacters);
        }
        }, new Action1() {
        @Override
        public void call(Throwable throwable) {

            }
        });

private Observable> getDataFromNet() {
return Observable.create(new Observable.OnSubscribe>() {
        @Override
        public void call(Subscribersuper List> subscriber) {
        try {
                Thread.sleep(3000);
        } catch (InterruptedException e) {
                e.printStackTrace();
        }

            ArrayList contacters = new ArrayList<>();
            contacters.add(new Contacter("net:Zeus"));
            contacters.add(new Contacter("net:Athena"));
            contacters.add(new Contacter("net:Prometheus"));
            subscriber.onNext(contacters);
            subscriber.onCompleted();

        }
    });

private Observable> getDataFromLocation() {
    return Observable.create(new Observable.OnSubscribe>() {
        @Override
        public void call(Subscribersuper List> subscriber) {
        try {
                Thread.sleep(1000);
        } catch (InterruptedException e) {
                e.printStackTrace();
        }

            List datas = new ArrayList<>();
            datas.add(new Contacter("location:" + "张三"));
            datas.add(new Contacter("location:" + "李四"));
            datas.add(new Contacter("location:" + "王五"));

            subscriber.onNext(datas);
            subscriber.onCompleted();
        }
    });
}

效果图：

    

源码:  https://github.com/cn-ljb/rxjava_for_android