【Kotlin】How to Use SeekBar 4

MainActivity.kt

class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        /* 省略 */

        // SeekBarイベント
        seekbar.setOnSeekBarChangeListener(
            object : SeekBar.OnSeekBarChangeListener {
                override fun onProgressChanged(p0: SeekBar?, p1: Int, p2: Boolean) {
                    textView.text = "$p1"
                }
                override fun onStartTrackingTouch(p0: SeekBar?) {
                }
                override fun onStopTrackingTouch(p0: SeekBar?) {
                }
            }
        )
    }
}