'Flutter Error: WidgetsBinding.instance!.addPostFrameCallback((_) {
After upgrading to 3.0.0. i keep getting this error about WidgetsBinding.instance!.addPostFrameCallback((_) {
here is the image of the error.
Solution 1:[1]
change
WidgetsBinding.instance!.addPostFrameCallback((_) {});
to
WidgetsBinding.instance.addPostFrameCallback((_) {});
You can also run dart fix --apply from the command line which will make the above change for you automatically.
The return type of WidgetsBinding.instance was changed from static WidgetsBinding? get instance => ... to static WidgetsBinding get instance => ... so adding ! or ? is no longer required.
Also, note that this is just a warning, and you may get the warning from dependencies if they also have an unnecessary ? or !.
See also Flutter 3.0.0 release notes - If you see warnings about bindings.
Sources
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Source: Stack Overflow
| Solution | Source |
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| Solution 1 |