seekbar demo for @張順閔

seekbar.kt

class Presenter  {
        fun onSeekBarSelect(data: Any) {
            //brabra
        }
    }
    val list = listOf<Any>()
    val presenter = Presenter()
    val seekBar = SeekBar(null).apply {
        setOnSeekBarChangeListener(object : SeekBar.OnSeekBarChangeListener {
            override fun onStartTrackingTouch(seekBar: SeekBar?) {}

            override fun onStopTrackingTouch(seekBar: SeekBar?) {}

            override fun onProgressChanged(seekBar: SeekBar?, progress: Int, fromUser: Boolean) {
                presenter.onSeekBarSelect(list[progress])
            }
        })
        max = list.size
    }