Android APPs Developer

@Composable fun ColorMathInput() {     var text by remember { mutableStateOf("") }     TextField(         value = text,         onValueChange = { text = it },         textStyle = TextStyle(fontSize = 20.sp),         visualTransformation = { input ->             TransformedText(                 buildAnnotatedString {                     input.text.forEach { ch ->                         when (ch) {                             '+', '-', '*', '/' -> {                                 withStyle(                                     SpanStyle(color = Color.Red)                                 ) {                                     append(ch)                                 }                             }                             else -> {                                 withStyle(                                     SpanStyle(color = Color.White)                                 ) {                                     append(ch)                                 }                             }                         }                     }                 },                 OffsetMapping.Identity             )         },         colors = TextFieldDefaults.textFieldColors(             containerColor = Color.Black,             cursorColor = Color.White         ),         modifier = Modifier             .fillMaxWidth()             .padding(16.dp)     ) }