iOS Code Snippet Apple pencil interaction

This inline code detects doubletaps on the Apple Pencil

B4X:
Dim no As NativeObject = Me
no.RunMethod("addPencilDoubleTapRecognizer:", Array(AnyView))

Private Sub PencilDoubleTapped
    ' This event is raised when a double-tap is detected by the Apple Pencil
End Sub

#if OBJC

#import <UIKit/UIKit.h>

- (void)addPencilDoubleTapRecognizer:(UIView *)targetView {
    if (@available(iOS 12.1, *)) {
        UIPencilInteraction *pencilInteraction = [[UIPencilInteraction alloc] init];
        pencilInteraction.delegate = self;
        [targetView addInteraction:pencilInteraction];
    }
}

- (void)pencilInteractionDidTap:(UIPencilInteraction *)interaction {
    // Call back to B4i event
    [self.bi raiseEvent:nil event:@"pencildoubletapped" params:nil];
}

#End If
 
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