Create a function that runs every interval and stop that function from running with Kotlin in Android Studio

Question

I want to create a function that runs every 50ms (the equivalent of setInterval in JS). So far, this is what I have:

val mainHandler = Handler(Looper.getMainLooper())
mainHandler.post(object: Runnable {
    override fun run() {
        progressBar.progress += 1
        mainHandler.postDelayed(this, 50)
    }
})

It works, but how do I stop the run() function from running any further when the progress has reached 100? Also, is there a way to cancel the run and reset progress to 0 when I click a button (like clearInterval in JS)? For reference, I want this:

buttonView.setOnClickListener {
    stopRunFromRunning()
    resetProgressTo0()
}

progress.onReach100 {
    stopRunFromRunning()
}

Answer 1

assign the runnable into a variable and you can remove from handler's callback

val progressBar = findViewById(R.id.progress_bar)
val btn = findViewById(R.id.btn)

val handler = Handler(Looper.getMainLooper())
val runnable = Runnable {
    override public fun run() {
     progressBar.progress+=1
       if(progressBar.progress<100)
          handler.postDelayed(this, 50) 
    }
}

handler.post(runnable, milliseconds)

btn.setOnClickListener {
    handler.removeCallbacks(runnable)
    progressBar.progress=0
}