Android RxJava 创建操作符Timer

之前有写过Android实现倒计时之使用CountDownTimer，除了CountDownTimer，开发中我们也会用到handler，例如

 mHandler.sendEmptyMessageDelayed(1, 10*1000);
    private Handler mHandler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            super.handleMessage(msg);
            Log.e("流程", "10秒时间已到");
        }
    };

现在结合RxJava来的Observable.timer操作符，既可以延迟执行一段逻辑，也可以间隔执行一段逻辑
（1）Timer 延迟10秒执行：

private void timer() {
        Observable.timer(10000, TimeUnit.MILLISECONDS)
                .observeOn(AndroidSchedulers.mainThread())
                .subscribe(new Action1() {
                    @Override
                    public void call(Long aLong) {
                        Log.e("流程", "10秒倒计时已结束");
                    }
                });
    }

（2）Timer 间隔1秒执行：

 private Subscription subscribe;
    private void timer() {
        subscribe= Observable.timer(1000,1000,TimeUnit.MILLISECONDS).subscribe(new Subscriber() {
            @Override
            public void onCompleted() {
            }

            @Override
            public void onError(Throwable e) {

            }

            @Override
            public void onNext(Long aLong) {
                Log.e(TAG, "------>along："+aLong+" time:"+ SystemClock.elapsedRealtime());
            }
        });
    }

记得要取消订阅

  private void stop() {
        if (subscribe != null && !subscribe.isUnsubscribed()) {
            subscribe.unsubscribe();
        }
    }