Issue
Is it possible to have list of InputFilters for example only letting inputs such as
$1,01
or $100,95
that was done with
editText.filters = arrayOf(CurrencyFormatInputFilter(), InputFilter.LengthFilter(8))
class CurrencyFormatInputFilter : InputFilter {
private val pattern = Pattern.compile(CURRENCY_INPUT_REGEX)
override fun filter(
source: CharSequence,
start: Int,
end: Int,
dest: Spanned,
dstart: Int,
dend: Int
): CharSequence? {
val result = (dest.subSequence(0, dstart).toString()
+ source.toString()
+ dest.subSequence(dend, dest.length))
val matcher = pattern.matcher(result)
return if (!matcher.matches()) dest.subSequence(dstart, dend) else null
}
}
Solution
My suggestion would be display an error while the value inserted is invalid. For instance:
fun isValidEmail(emailStr: String?) =
Pattern
.compile(
"^[A-Z0-9._%+-]+@[A-Z0-9.-]+\\.[A-Z]{2,6}$",
Pattern.CASE_INSENSITIVE
).matcher(emailStr).find()
...
var emailText by remember { mutableStateOf("") }
var showError by remember { mutableStateOf(false) }
TextField(
value = emailText,
onValueChange = {
emailText = it
showError = !isValidEmail(it)
},
isErrorValue = showError,
label = { Text(text = "Email") },
modifier = Modifier.fillMaxWidth()
)
if (showError) {
Text("Email is invalid")
}
Answered By - nglauber
0 comments:
Post a Comment
Note: Only a member of this blog may post a comment.