如何在触摸视图时暂停和恢复kotlin协程？

import android.os.Bundle
import android.view.MotionEvent
import androidx.appcompat.app.AppCompatActivity
import androidx.lifecycle.lifecycleScope
import kotlinx.coroutines.Dispatchers
import kotlinx.coroutines.delay
import kotlinx.coroutines.launch

class MainActivity : AppCompatActivity() {

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

        val touchableView = findViewById<View>(R.id.touchableView)
        touchableView.setOnTouchListener { _, event ->
            when (event.action) {
                MotionEvent.ACTION_DOWN -> pauseCoroutine()
                MotionEvent.ACTION_UP -> resumeCoroutine()
            }
            true
        }

        startCoroutine()
    }

    private fun startCoroutine() {
        lifecycleScope.launch(Dispatchers.Main) {
            while (true) {
                delay(1000) // 模拟耗时操作
                // 执行你的协程逻辑
            }
        }
    }

    private fun pauseCoroutine() {
        // 取消协程的Job
        lifecycleScope.coroutineContext.cancelChildren()
    }

    private fun resumeCoroutine() {
        // 重新启动协程
        startCoroutine()
    }
}

implementation 'androidx.lifecycle:lifecycle-runtime-ktx:2.4.0'