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Input instructions on Flutter

When a label might not describe the requested input sufficiently, you should add additional instructions. For example, if passwords are required to be at least 8 characters, indicate this to users.

In Flutter, you can use an InputDecoration to show instructions for a TextField. You need to provide a string for the helperText property.

  decoration: InputDecoration(
    helperText: 'Your password should be at least 8 characters.',


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