Flutter 获取控件尺寸和位置
1. 插件必须渲染好,
final RenderBox box = globalKey.currentContext.findRenderObject(); final size = box.size; final topLeftPosition = box.localToGlobal(Offset.zero); return topLeftPosition.dy;
2. 可以通过context.size获取当前控件的尺寸和位置offset信息
下面是示例,通过contex.size.height可以拿到child控件的高度
class HeightReporter extends StatelessWidget { final Widget child; HeightReporter({this.child}); @override Widget build(BuildContext context) { return new GestureDetector( child: child, onTap: () { print('Height is ${context.size.height}'); }, ); }