[syncfusion_flutter_signaturepad] Unable to draw the signature in Iphone Pro series.

[chetu-ko]

Unable to draw the signature on IPHONE pro series mobile. it is working fine in the below devices.

1. Working in android application.
2. Working in android mobile web.
3. Working in desktop web.
4. Working in IOS applications, all series.
5. Working in Mac web
6. But not working in IOS mobile web pro series (Chrome, Safari, Edge). Tested in Iphone 14 pro, 15 Pro, 16 pro.

The version we are using

syncfusion_flutter_signaturepad: ^26.1.39
flutter version : 3.22.2

Tha Example Code We have added

SfSignaturePad(
          key: widget.controller._signaturePadKey,
          minimumStrokeWidth: 3,
          maximumStrokeWidth: 3,
          strokeColor: Colors.black,
          backgroundColor: Colors.white,
          onDrawEnd: () {
            widget.controller.extractImage();
          },
          onDraw: (Offset offset, DateTime time) {
            widget.controller._updateSignatureState();
         },
      ),

IMG_6387.MP4

[BPraveenBalu]

Hi Chetan Koppal,

We would like to inform you that the mentioned issue may occur in the older versions of Flutter SDK, as the Flutter framework uses the Impeller rendering engine by default for the iOS platform.

Disabling the Impeller by following the steps in the link below may help in resolving the issue:
Link: https://docs.flutter.dev/perf/impeller#ios

Additionally, several improvements have been made in the latest versions of Flutter SDK regarding the drawing performance in the iOS Impeller rendering engine. Therefore, we recommend using the latest version of both the SfSignaturePad widget (currently 29.1.33) and upgrading the Flutter SDK to the latest version (3.29.2), as several enhancements have been implemented in the iOS Impeller rendering engine.

For the latest Flutter version release notes, please refer to: Flutter Release Notes.

Regards,
Praveen Balu.

[LavanyaGowtham2021]

Please reopen this ticket if you need further assistance on this.