How to show the error icon in a TextInputLayout programatically?

Question

I'm using a TextInputLayout widget and I simply want to display the error icon in the end side of the view regradless of the error message.

Answer 1

Kindly use the following kotlin line for this purpose

yourInputLayout.error = "Please enter valid email address"

Answer 2

If you want to change the error icon and display error use like

val errorDrawable = ContextCompat.getDrawable(context!!, R.drawable.ic_error)
input_layout.error = SpannableString("error message").apply {
                setSpan(ImageSpan(errorDrawable, ImageSpan.ALIGN_BASELINE), 0, 1, Spanned.SPAN_INCLUSIVE_EXCLUSIVE)

Answer 3

If you want to show the error icon the only built-in method is to display a message error:

textInputLayout.setError("Error message");

If you want to display the error icon without an error message there is a workaround:

//Update the EndIcon with a custom icon error
textInputLayout.setEndIconMode(TextInputLayout.END_ICON_CUSTOM);
textInputLayout.setEndIconDrawable(R.drawable.error_icon);

//Tint the end icon with the error color defined in your app theme
TypedValue typedValue = new TypedValue();
getTheme().resolveAttribute(R.attr.colorError, typedValue, true);      
textInputLayout.setEndIconTintList(
         ContextCompat.getColorStateList(this,typedValue.resourceId));