textfield

问题 How can I activate/deactivate a button based on the content of a TextFormField? I want to make sure a user can only press Button X if the TextFormField has 10 entered numbers (if it's a mobile number). Thanks! 回答1: A simple way would be to set the autovalidate property of our TextFormField to true . This will automatically detect for changes on our TextFormField widget. We can then try to check if our TextFormField's value has a String length of 10 characters on the validator property . After

问题 I'm a bit confused how to change the hint color of the textfield. Someone can guide me how to do it.Thanks child: TextField( style: TextStyle(fontSize: 20), decoration: InputDecoration( hintText: "Password", border: new OutlineInputBorder( borderSide: new BorderSide( color: Colors.teal, ), ), prefixIcon: const Icon( Icons.security, color: Colors.white, ), ), ), 回答1: You can do with hintStyle : in InputDecoration TextField( style: TextStyle(fontSize: 20), decoration: InputDecoration( hintText:

问题 I'm a bit confused how to change the hint color of the textfield. Someone can guide me how to do it.Thanks child: TextField( style: TextStyle(fontSize: 20), decoration: InputDecoration( hintText: "Password", border: new OutlineInputBorder( borderSide: new BorderSide( color: Colors.teal, ), ), prefixIcon: const Icon( Icons.security, color: Colors.white, ), ), ), 回答1: You can do with hintStyle : in InputDecoration TextField( style: TextStyle(fontSize: 20), decoration: InputDecoration( hintText:

问题 I'm a bit confused how to change the hint color of the textfield. Someone can guide me how to do it.Thanks child: TextField( style: TextStyle(fontSize: 20), decoration: InputDecoration( hintText: "Password", border: new OutlineInputBorder( borderSide: new BorderSide( color: Colors.teal, ), ), prefixIcon: const Icon( Icons.security, color: Colors.white, ), ), ), 回答1: You can do with hintStyle : in InputDecoration TextField( style: TextStyle(fontSize: 20), decoration: InputDecoration( hintText:

来源： https://stackoverflow.com/questions/58621688/swiftui-textfield-inside-listview-goes-blank-after-filtering-list-items

来源： https://stackoverflow.com/questions/61906419/flutter-textfield-labeltext-center

来源： https://stackoverflow.com/questions/61906419/flutter-textfield-labeltext-center

来源： https://stackoverflow.com/questions/61906419/flutter-textfield-labeltext-center

来源： https://stackoverflow.com/questions/64121557/how-to-change-width-of-materialui-autocomplete-based-on-option-selected

来源： https://stackoverflow.com/questions/64064882/change-cursor-position-and-force-singleline-of-textfield-in-jetpack-compose