flutterlocation

A simple flutter demo shows get widget location bug.

Generally, we can use GlobalKey and RenderBox.localToGlobal API to get location:

RenderBox renderBox = _globalKey.currentContext.findRenderObject();
Offset textOffset = renderBox.localToGlobal(Offset.zero);

Every thing works just fine EXCEPT you're not using flutter MethodChannel!

By adding flutter MethodChannel, the offset calculated by above API is different!

Project Explain

The pureflutter folder is clean flutter demo, show the RIGHT location of a widget.

Clone this project and

cd flutterlocation
flutter pub get
cd pureflutter
flutter pub get

then

flutter run

to run pure flutter demo.

The addtoapp folder is an Android project which using the top package(flutterlocation) and

cd flutter_module
flutter pub get

Then sync project and you can run addtoapp now.