I have a TextField in Flutter of which I want to automatically select the text and show the keyboard.
I can select the text through a TextEditingController, but even with a FocusNodes requestFocus the keyboard isn't shown, when the Widget opens.
How to automatically open the keyboard for a TextField?
You can use the autofocus:true property of the TextField:
Whether this text field should focus itself if nothing else is already focused.
So whenever the widget appears on screen, if theres nothing else with the keyboard focus, the focus will automatically be directed to it, thus opening the keyboard.
TextField(TextEditingController: controller,
focusNode: focusNode,
autofocus:true)
You can set the autofocus property on TextField to true:
TextField(
autofocus: true,
);
Hope it helps!
class yourWidget extends StatelessWidget {
FocusNode inputNode = FocusNode();
// to open keyboard call this function;
void openKeyboard(){
FocusScope.of(context).requestFocus(inputNode)
}
#override
Widget build(BuildContext context) {
TextFormField(
//assign the node like this
focusNode: inputNode,
autofocus:true,)
}
I have done this just using:
autofocus: true,
But if you want more control over your TextField / TextFormFeild keyboard you can use:
1. First declare a focus node object:
FocusNode focusNode = FocusNode(); // declear a focusNode object
2. On TextFeild / TextFormFeild, just do like below:
focusNode: focusNode, // assign focusNode object on focusNode value
autofocus: true, // make autofocus true for first auto open keyboard
3. Just call this function when you want to open your keyboard:
void openKeyboard () {
FocusScope.of(context).requestFocus(inputNode);
}
This is an example of how you can use it. Using that format you can open the keyboard automatically / you have complete control over whether or not you need to open the keyboard.
I hope this will fix your issue.
Related
I have used focusNode to focus cursor on text form field. But I defined global textformfield widget. but used focus node in single screen only. Now the problem is automatically all the field cursor gets activated. because of that common focusnode in widget. How we can set that only in slogin screen focus node will work or else that condition will avoid.
FocusNode textFocusOnFirstField = FocusNode();
TextFormField(
// here use the variable in all the TextFormField
// enabled: isEnable, // here use the variable in all the TextFormField
focusNode: textFocusOnFirstField ,
readOnly: readOnly,
FocusScope.of(context).unfocus();
Use this in initState() so that it unfocuses all the textfield as soon as screen loads.
I have a page that contains multiple elements and it has a TextField widget and I want to know if I moved to another element to do something. Is there an event that is triggered when moving from one element to another? I tried onSubmitted but it didn't fulfill my request.
You need to use FocusNode
Declare your FocusNode : final FocusNode focusNode;
Pass it to TextField : TextField( ..., focusNode: focusNode, ... )
Add listener to FocusNode :
focusNode.addListener(() {
print("${focusNode.hasFocus}");
});
FocusNode has hasFocus , true means TextField has focus
I don't want the keyboard to automatically appear when I'm pressing on the widget. However, I want to show the cursor to indicate that there's a textfield in this area. How can I achieve this?
I can only think of one workaround for this. You can add FocusNode to your field and listen to changes. When the field get focus, hide the keyboard.
final FocusNode fn = FocusNode();
fn.addListener(() {
// You can control here whether or not you want to hide automatically shown keyboard
if (fn.hasFocus) {
// Hiding the keyboard
SystemChannels.textInput.invokeMethod('TextInput.hide');
}
});
...
// Pass the focus node to text field:
TextField(
focusNode: fn
);
I haven't tested it, though.
I have a TextField which has a default text in it from the beginning. I want the cursor to be placed at the end of the existing text when the TextField receives focus (possibly with the condition that the text should not have already been modified from the default text).
I've tried setting the controller.selection which didn't work. I also tried using a FocusNode:
focusNode: FocusNode()..addListener((){
if( !record.isCommentModified )
record.textEditingController.selection = TextSelection.collapsed(offset: record.comment.length);
})
It does work, but one side effect is that multiple textfields look like they have focus at the same time. How can I prevent this? Or even better, is there a better way of achieving what I want?
If there's a value set on a TextField, by default the cursor is positioned at the end of the text/value when focused. Let me know if the behavior you've encountered was different.
TextFields need to have individual FocusNode. Since you're using a single FocusNode for multiple, once one TexField is focused it appears that there are multiple TextFields in focus.
As for tracking which TextField contains text, individual TextEditingController is needed as well. What I can suggest is to create a List of FocusNode and TextEditingController for the TextFields.
late List<FocusNode> focusNodeList;
late List<TextEditingController> textController;
#override
void initState() {
super.initState();
// Initialize both List
textController = List<TextEditingController>.generate(
length, (index) => TextEditingController());
focusNodeList = List<FocusNode>.generate(length, (index) {
var focusNode = FocusNode();
focusNode.addListener(() {
// Do something
});
return focusNode;
});
}
and set them on your TextField
TextField(
controller: textController[0],
focusNode: focusNodeList[0],
),
TextField(
controller: textController[1],
focusNode: focusNodeList[1],
),
...
I have a form with multiple text fields and would like users to be able to jump to the next input field when tapping "enter" on the on-screen keyboard.
I have been able to make it work by requesting focus for the next field's FocusNode in my field's onFieldSubmitted handler:
new TextFormField(
...
onFieldSubmitted: (newValue) {
...
FocusScope.of(context).requestFocus(
widget.nextNode ?? new FocusNode()
);
}
This works, but you do briefly see the on-screen keyboard close and re-open. Is there a way in Flutter to keep the keyboard on the screen until widget.nextNode becomes null?
Try adding below parameter to TextFormField.
textInputAction: TextInputAction.next,