'TextFormField update input to 1 if user keys in 0 flutter
I am having a TextFormField as a child in Form like below
Form(
autovalidateMode:
AutovalidateMode
.onUserInteraction,
child: TextFormField(
maxLength:
maxInputLength,
controller:
quantityController,
cursorHeight: 20,
textAlign:
TextAlign.center,
decoration: InputDecoration(
counterText: "",
contentPadding:
const EdgeInsets
.only(
left: 1,
right: 1,
top: 10,
bottom:
10),
border: OutlineInputBorder(
borderRadius:
BorderRadius
.circular(
20)),
isDense: true),
onChanged: (q) {
},
validator: (quantity){
},
keyboardType:
TextInputType
.number,
inputFormatters: <
TextInputFormatter>[
FilteringTextInputFormatter
.digitsOnly
],
))
What i would like to achieve is when i type a value like 0 the TextFormField automatically replaces the 0 with 1. I have tried using a TextEditingController but its showing a square box momentarily before replacing the 0 with 1 which is not smooth for the UI
Sources
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Source: Stack Overflow
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