TextFormField enters value backwards [Flutter] - flutter

Question

As displayed in the GIF below, the TextFormField i am using is entering the values backwards. I have set the TextDirection property to ltr as well but it did not change anything. Other TextFormFields dont seem to be having this issue. The entered text is being sent back to another screen using Navigator.pop and it is sent in the same backwards manned.
Weird TextFormField
Code for the textFormField causing the issue:
TextFormField(
// validator: (String value) {
// return value.isEmpty ? "task must have a name" : null;
// },
textDirection: TextDirection.ltr,
maxLength: 100,
controller: newcontroller, // Just an ordinary TextController
onChanged: (value) {
setState(() {
newcontroller.text = value;
});
},
decoration: InputDecoration(
errorText: _validate // Just a boolean value set to false by default
? 'Value Can\'t Be Empty' : null,
labelText: "name of task"
),
style: TextStyle(height: 1.2, fontSize: 20, color: Colors.black87)
)

Answer 1

You don't have to set text in newcontroller.text when onChanged is called.
text enter in your TextFormField is assigned by default to newcontroller.
You are getting this error because for this piece of code,
So, try to remove below code
setState(() {
newcontroller.text = value;
});

Answer 2

you can send whatever you want in Navigator.pop(context,whtever you want to pass)
TextFormField(
// validator: (String value) {
// return value.isEmpty ? "task must have a name" : null;
// },
textAlign: TextAlign.end,
maxLength: 100,
controller: newcontroller, // Just an ordinary TextController
onChanged: (value) {
print(value);
},
decoration: InputDecoration(
errorText:
_validate // Just a boolean value set to false by default
? 'Value Can\'t Be Empty'
: null,
labelText: "name of task"),
style:
TextStyle(height: 1.2, fontSize: 20, color: Colors.black87),
),
MaterialButton(
onPressed: () {
Navigator.pop(context, newcontroller.text);
},
child: Text("GO BACK!"),
),

Answer 3

replace onChanged with onEditingComplete.
onEditingComplete: (value) {
newController.text = value;
FocusScope.of(context).unfocus(); //use this to dismiss the screen keyboard
}

Answer 4

Just remove the onChanged function. There is no need for it.

Answer 5

onChanged: (val) {
if (val.isNotEmpty) {
setState(() {
// remember to not add your controller value in onchanged
_messageController.text = val;
isShowSendButton = true;
});
} else {
setState(() {
// remember to not add your controller value in onchanged
_messageController.text = val;
isShowSendButton = false;
});
}

Answer 6

Unfortunately, onEditingComplete doesn't always fire (i.e. on a focus change), so if you are editing a text variable you can still use onChanged as the most reliable way to update changes, but you should not use the onChanged value parameter, nor should you use setState (which results in the reversed text).
TextEditingController tec = TextEditingController(text: myText);
return TextField(
controller: tec,
onChanged: (value) {
myText = tec.text;
},
);