Android RX需要同步执行两个不同的进程

Observable<String> process1 = Observable.create(new ObservableOnSubscribe<String>() {
    @Override
    public void subscribe(ObservableEmitter<String> emitter) throws Exception {
        // 执行第一个进程的操作
        // ...
        emitter.onNext("Result 1");
        emitter.onComplete();
    }
});

Observable<String> process2 = Observable.create(new ObservableOnSubscribe<String>() {
    @Override
    public void subscribe(ObservableEmitter<String> emitter) throws Exception {
        // 执行第二个进程的操作
        // ...
        emitter.onNext("Result 2");
        emitter.onComplete();
    }
});

Observable.zip(process1, process2, new BiFunction<String, String, String>() {
    @Override
    public String apply(String result1, String result2) throws Exception {
        // 合并两个进程的结果
        return result1 + " " + result2;
    }
})
.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread())
.subscribe(new Observer<String>() {
    @Override
    public void onSubscribe(Disposable d) {
        // 订阅时的操作
    }

    @Override
    public void onNext(String result) {
        // 处理合并后的结果
    }

    @Override
    public void onError(Throwable e) {
        // 处理错误情况
    }

    @Override
    public void onComplete() {
        // 处理完成情况
    }
});