flutter- How to know the device is DeviceOrientation is up or down?

Question

When I am rotating screen its rotates camera along with the screen, so I am getting Inverted camera screen.

return new AspectRatio(
    aspectRatio: controller.value.aspectRatio,
    child: new CameraPreview(controller),
  );

Answer 1

You can build responsive apps using OrientationBuilder

OrientationBuilder(
  builder: (context, orientation) {
    return GridView.count(
      // Create a grid with 2 columns in portrait mode, or 3 columns in landscape mode.
      crossAxisCount: orientation == Orientation.portrait ? 2 : 3,
    );
  },
);

or

Orientation currentOrientation = MediaQuery.of(context).orientation;
if(currentOrientation == Orientation.portrait){
    /* ... */
}

To enforce a particular orientation see this https://stackoverflow.com/a/50322184/9664127

other useful links:

https://flutter.io/cookbook/design/orientation/

https://docs.flutter.io/flutter/services/DeviceOrientation-class.html

https://medium.com/@kr1uz/how-to-restrict-device-orientation-in-flutter-65431cd35113

Updated

Flutter does not currently support 'orientation sides', but this plugin may help in that area https://pub.dartlang.org/packages/native_device_orientation

Answer 2

You can use this plugin: https://pub.dartlang.org/packages/native_device_orientation

(I'm having some issues with iOS - reporting opposite orientation, but this can be worked around)