How to get UIMenuController work for a custom view?

Question

I\'m trying to get the following code work:

UIMenuController * menu = [UIMenuController sharedMenuController];
[menu setTargetRect: CGRectMake(100, 100, 100,         


        

Answer 1

I did it in the following way below. Just call the method that shows the menu after very short delay in init. I didn't want to call it from View Controller and also didn't find an event that indicates that my custom view appeared and i'm ready to show menu. So this way OK from my perspective. Delay can be less, but its up to you.

@implementation DTSignatureImageView

- (id)initWithImage:(UIImage *)image
{
    self = [super initWithImage:image];
    if(self){
        self.contentMode = UIViewContentModeScaleAspectFit;
        self.frame = CGRectMake(0, 0, image.size.width / 2.5, image.size.height / 2.5);
        self.userInteractionEnabled = YES;

        UIPanGestureRecognizer *pan = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(signatureDidPan:)];
        [self addGestureRecognizer:pan];

        [self becomeFirstResponder];

        [self performSelector:@selector(showMenu) withObject:nil afterDelay:0.5];
    }

    return self;
}

- (BOOL)canBecomeFirstResponder
{
    return YES;
}

- (void)showMenu
{
    UIMenuController *menu = [UIMenuController sharedMenuController];
    menu.menuItems = @[
       [[UIMenuItem alloc] initWithTitle:@"Apply" action:@selector(applySignature)],
       [[UIMenuItem alloc] initWithTitle:@"Update" action:@selector(updateSignature)],
       [[UIMenuItem alloc] initWithTitle:@"Clear" action:@selector(delegateSignature)]];
    [menu setTargetRect:self.bounds inView:self];
    [menu setMenuVisible:YES animated:YES];
}

- (NSArray *)menuActions
{
    static NSArray *actions = nil;
    if (actions == nil){
        actions = @[
                    NSStringFromSelector(@selector(applySignature)),
                    NSStringFromSelector(@selector(updateSignature)),
                    NSStringFromSelector(@selector(delegateSignature))];
    }

    return actions;
}

- (void) signatureDidPan: (UIPanGestureRecognizer *)gesture
{
    switch (gesture.state) {
        case UIGestureRecognizerStateBegan: {
            [[UIMenuController sharedMenuController] setMenuVisible:NO animated:YES];
            break;
        }

        case UIGestureRecognizerStateEnded: {
            [self becomeFirstResponder];
            [self showMenu];
        }

        default:
            break;
    }

    CGPoint point = [gesture locationInView:gesture.view.superview];
    gesture.view.center = point;
}