Question 79504 in Flutter Question posted in
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How to fix FlatButton and RaiseButton Error in flutter

Please i don’t explicitly use RaiseButton or FlatButton in my code. But i get this error

../../snap/flutter/common/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_platform_widgets-1.20.0/lib/src/platform_button.dart:269:14: Error: The method 'FlatButton' isn't defined for the class 'PlatformButton'.
 - 'PlatformButton' is from 'package:flutter_platform_widgets/src/platform_button.dart' ('../../snap/flutter/common/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_platform_widgets-1.20.0/lib/src/platform_button.dart').
Try correcting the name to the name of an existing method, or defining a method named 'FlatButton'.
      return FlatButton(
             ^^^^^^^^^^
../../snap/flutter/common/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_platform_widgets-1.20.0/lib/src/platform_button.dart:302:12: Error: The method 'RaisedButton' isn't defined for the class 'PlatformButton'.
 - 'PlatformButton' is from 'package:flutter_platform_widgets/src/platform_button.dart' ('../../snap/flutter/common/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_platform_widgets-1.20.0/lib/src/platform_button.dart').
Try correcting the name to the name of an existing method, or defining a method named 'RaisedButton'.
    return RaisedButton(
           ^^^^^^^^^^^^

Thank for help

I tried this solution who did not work for me.

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4

Answers


  1. 0

    flutter_platform_widgets used those deprecated widgets. If you update it to 2.0.0 problem will be fixed

    flutter_platform_widgets/changelog

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  2. 0

    With Flutter > 2.0, RaisedButton widget is deprecated and replaced by ElevatedButton widget. One example usage of ElevatedButton is mentioned here

    For more info, check the official docs: https://api.flutter.dev/flutter/material/RaisedButton-class.html

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  3. 0

    You are using older version of flutter_platform_widgets and in that version, package use RaisedButton and FlatButton which are deprecated, so try updated your package to newer version like: flutter_platform_widgets: ^2.0.0 .

    If you not used flutter_platform_widgets directly, you need to search in all your packages and check which package use flutter_platform_widgets and try to updated that.

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  4. 0

    You can no longer use RaisedButton or FlatButton in the latest versions they are deprecated. Use ElevatedButton instead.

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