Slide focus to TextField in Flutter

Question

Asked by Rishabh K on March 31, 2018 (source).

I have been learning flutter for last few days and I encountered a problem while developing my app. So I have a basic form containing all the basic input fields and after a user clicks the submit button the app checks for the validity of the text field. If there is some wrong entry the app moves focus back to the text field.

How can I move focus back to the Text Field?

Answer

Question answered by Günter Z (source).

var focusNode = FocusNode();
var textField = TextField(focusNode: focusNode);

FocusScope.of(context).requestFocus(focusNode);
// or 
focusNode.requestFocus();

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