[Jetpack Compose] カメラを開く、撮った写真を表示する

<uses-feature
        android:name="android.hardware.camera"
        android:required="false" />
    <uses-permission android:name="android.permission.CAMERA" />

implementation("io.coil-kt:coil-compose:1.4.0")

@Composable
private fun MyCameraView() {
	var imageUri by remember { mutableStateOf<Uri?>(null) }
	val context = LocalContext.current
	val launcher = rememberLauncherForActivityResult(
		contract = ActivityResultContracts.TakePicturePreview(),
		onResult = { bitmap ->
			if (bitmap != null) {
				// bitmapをUriに変換
				imageUri = Uri.parse(MediaStore.Images.Media.insertImage(context.contentResolver, bitmap, "Title", null))
			}
		}
	)
	val permissionLauncher = rememberLauncherForActivityResult(
		contract = ActivityResultContracts.RequestPermission(),
		onResult = { isGranted ->
			if (isGranted) {
				launcher.launch(null)
			} else {
				Log.d("CAMERA PERMISSION", "Denied")
			}
		}
	)

	Box(
		modifier = Modifier.fillMaxSize(),
		Alignment.Center
	) {
		Column(
			modifier = Modifier
				.padding(12.dp),
			horizontalAlignment = Alignment.CenterHorizontally
		) {
			imageUri.let { uri ->
				Image(
					painter = rememberImagePainter(data = uri),
					contentDescription = "Taken Photo",
					modifier = Modifier
						.width(320.dp)
						.height(320.dp),
					contentScale = ContentScale.Crop
				)
			}
			Spacer(modifier = Modifier.padding(12.dp))
			Button(
				onClick = {
                // カメラ許可ステータスによって処理を分岐
				if (ContextCompat.checkSelfPermission(context, Manifest.permission.CAMERA) == PackageManager.PERMISSION_GRANTED) {
					launcher.launch(null)
				} else {
					permissionLauncher.launch(Manifest.permission.CAMERA)
				}
			},
				modifier = Modifier
					.width(320.dp)
					.height(60.dp)
			) {
				Text(text = "Open Camera")
			}
		}
	}
}