带货直播源码，实现验证码倒计时按钮相关的代码

private var mDisposable: Disposable? = null

/**
     * 验证码按钮倒计时
     */
    private fun countDown(){
        val countDownStr = resources.getString(R.string.get_sms_code_count_down)
        setCodeButtonEnable(false)
        val flowable: Flowable<Long> = Flowable.intervalRange(1,60,0,1,TimeUnit.SECONDS)
                .observeOn(AndroidSchedulers.mainThread())
                .doOnNext {
                    bt_code.text = countDownStr.format(60-it)
                }
                .doOnComplete {
                    setCodeButtonEnable(true)
                }
        mDisposable = flowable.subscribe()

    }


    override fun onDestroy() {
        super.onDestroy()
        mDisposable?.let {
            it.dispose()
        }
    }

    private fun setCodeButtonEnable(enable: Boolean){
        bt_code.isEnabled = enable
        bt_code.setBackgroundColor(if (enable) ContextCompat.getColor(this,R.color.colorBlue) else ContextCompat.getColor(this,R.color.colorGray7E))
        if (enable) bt_code.text = resources.getString(R.string.get_sms_code)
    }

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