Flutter 3 issue

[fennelhans]

In Flutter 3, WidgetsBinding.instance no longer requires a null safety check.

: Warning: Operand of null-aware operation '?.' has type 'WidgetsBinding' which excludes null.
../…/pie_chart/pie_chart.dart:42
- 'WidgetsBinding' is from 'package:flutter/src/widgets/binding.dart' ('../../../../bin/flutter/packages/flutter/lib/src/widgets/binding.dart').
package:flutter/…/widgets/binding.dart:1
    WidgetsBinding.instance?.addPostFrameCallback((_) {

[fennelhans]

This is how other teams are solving it:
(WidgetsBinding.instance as WidgetsBinding).addObserver(this);

[apgapg]

Thanks for help @fennelhans . Shall fix soon

[apgapg]

I tried running example app on flutter 3.0.1 but couldn't find any issue.

[mahoraz]

I tried running example app on flutter 3.0.1 but couldn't find any issue.

they changed WidgetBinding.instance null-aware checking operator issue into a warning (it was classified as an exception during build with flutter 3.0.0 and would prevent compilation before 3.0.1). It still shows up as a warning during debug

: Warning: Operand of null-aware operation '?.' has type 'WidgetsBinding' which excludes null.
../…/pie_chart/pie_chart.dart:42
- 'WidgetsBinding' is from 'package:flutter/src/widgets/binding.dart' ('../../../../Documents/flutter/packages/flutter/lib/src/widgets/binding.dart').
package:flutter/…/widgets/binding.dart:1
    WidgetsBinding.instance?.addPostFrameCallback((_) {
                   ^

[apgapg]

Pie chart doesnt use WidgetsBinding.
I dont see any warning when running project locally on latest flutter