Flutter build Error after upgrading flutter

Question

My Flutter android app was running without any problems but I upgraded Flutter to 3.3.4 and now I am having the following Error while building app bundle (and apk). Please help me.

The argument type 'EdgeInsets' can't be assigned to the parameter type 'Margins?'.

Code:

style: {
                    'body': Style(
                      margin: EdgeInsets.zero,
                      padding: EdgeInsets.zero,
                      fontSize: const FontSize(16.0),
                      lineHeight: const LineHeight(1.4),
                      color: Colors.white,
                      textAlign: TextAlign.center,
                      fontWeight: FontWeight.bold,
                    ),
                    'figure': Style(
                        margin: EdgeInsets.zero, padding: EdgeInsets.zero),
                  },

and another error:

Error: Cannot invoke a non-'const' constructor where a const expression is expected. Try using a constructor or factory that is 'const'.

                    fontSize: const FontSize(12.0),
                                    ^^^^^^^^

It's not because you're upgrading flutter version, please put your code where the error consists — 1988
– 1988, Commented Oct 17, 2022 at 5:24
style: { 'body': Style( margin: EdgeInsets.zero, padding: EdgeInsets.zero, fontSize: const FontSize(16.0), lineHeight: const LineHeight(1.4), color: Colors.white, textAlign: TextAlign.center, fontWeight: FontWeight.bold, ), 'figure': Style( margin: EdgeInsets.zero, padding: EdgeInsets.zero), }, — Punkkk
– Punkkk, Commented Oct 17, 2022 at 8:07

BHARATH T · Accepted Answer · 2022-10-17 05:31:34Z

1

Replace fontSize: const FontSize(12.0) with fontSize: 12

Post the saved_articles_tile.dart snippet for more help.

answered Oct 17, 2022 at 5:31

BHARATH T

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2 Comments

Punkkk Over a year ago

style: { 'body': Style( margin: EdgeInsets.zero, padding: EdgeInsets.zero, fontSize: const FontSize(16.0), lineHeight: const LineHeight(1.4), color: Colors.white, textAlign: TextAlign.center, fontWeight: FontWeight.bold, ), 'figure': Style( margin: EdgeInsets.zero, padding: EdgeInsets.zero), },

BHARATH T Over a year ago

What is the exact widget you are using?

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