RXJava应用系列-场景5

五、获取验证码倒计时

场景描述:

点击获取验证码后60s后可以再次点击获取。

问题分析:

计时和计数问题

伪代码实现:

TextView codeView;
int MAX_COUNT=60;
codeView.setEnabled(false);
        Observable.intervalRange(0, MAX_COUNT, 0, 1, TimeUnit.SECONDS)
                .observeOn(AndroidSchedulers.mainThread())
                .subscribe(new Consumer<Long>() {
                    @Override
                    public void accept(Long aLong) throws Exception {
                        codeView.setText((MAX_COUNT-aLong)+"秒后重试");
                    }
                }, new Consumer<Throwable>() {
                    @Override
                    public void accept(Throwable throwable) throws Exception {
                    }
                }, new Action() {
                    @Override
                    public void run() throws Exception {
                        codeView.setText("获取验证码");
                        codeView.setEnabled(true);
                    }
                });