tdcolvin

<?xml version="1.0" encoding="utf-8"?>
<paths xmlns:android="http://schemas.android.com/apk/res/android">
    <cache-path name="external_files" path="." />
</paths>

tdcolvin

val tmpFile = File.createTempFile("photo", ".jpg", context.cacheDir).apply {
    createNewFile()
    deleteOnExit()
}

tdcolvin

dependencies {
    ...
    implementation(libs.coil)
}

tdcolvin

@Composable
fun TakePhotoScreen(modifier: Modifier = Modifier) {
    // The location on disk where the photo was saved to, or null if no photo
    var imageUri by remember { mutableStateOf<Uri?>(null) }

    Column(modifier = modifier) {
        // We'll define this later...
        TakePhotoButton(
            onPhotoTaken = { imageUri = it }
        )

tdcolvin

viewModelScope.launch {
    // Time passing before we start collecting...
    delay(4000)
    
    // Start collecting the flow
    sharedFlow.collect {
        println(it)
    }
}

tdcolvin

val sharedFlow = MutableSharedFlow<Int>()

viewModelScope.launch {
    var count = 0
    
    // Every 500ms, emit a new number in sequence
    while (true) {
        delay(500)
        sharedFlow.emit(count++)
    }

tdcolvin

@Composable
fun FlashingCountingButton() {
    val scope = rememberCoroutineScope()
    var buttonColor by remember { mutableStateOf(Color.Red) }
    var count by remember { mutableStateOf(1) }

    Column {
        Button(colors = ButtonDefaults.buttonColors(backgroundColor = buttonColor),
            onClick = {
                val job = scope.launch {

tdcolvin

val job = scope.launch {
    while(true) {
        delay(500)
        buttonColor = Color(Random.nextInt(0xFF), Random.nextInt(0xFF), Random.nextInt(0xFF), 0xFF)
    }
}

scope.launch {
    delay(2000)
    job.cancel()

tdcolvin

@Composable
fun RandomColourButton() {
    val scope = rememberCoroutineScope()
    var buttonColor by remember { mutableStateOf(Color.Red) }

    Column {
        Button(colors = ButtonDefaults.buttonColors(backgroundColor = buttonColor),
            onClick = {
                scope.launch {
                    while(true) {

tdcolvin

suspend fun countToAHundredBillion() {
    var count = 0L
    
    while(count < 100_000_000_000) {
        count++
        
        // Every 10,000 we yield to the coroutine
        // dispatcher, allowing this loop to be
        // cancelled if needed.
        if (count % 10_000 == 0) {