Want to handle long text in InputDecoration->labelText in Flutter? Apologies for adding to an old question, but just learning flutter myself and stumbled into a similar issue.
My workaround was to use hintText instead of labelText, and explicitly adding \n line breaks to it.
String questionString = 'This sample is very \n very very very long'
new TextFormField (
decoration: new InputDecoration(
hintStyle: new TextStyle(
color: new Color(0xFF18776A),
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