I'd like to have a small info-style button in the lower left corner of my
screen, and added this code (no xib):
- (void)setupInfoButton
{
UIButton *infoButton = [UIButton buttonWithType: UIButtonTypeInfoDark];
[infoButton addTarget: self
action: @selector(showInfo:)
forControlEvents: UIControlEventTouchDown];
infoButton.showsTouchWhenHighlighted = YES;
[self.view addSubview:infoButton];
[self.view bringSubviewToFront:infoButton];
infoButton.translatesAutoresizingMaskIntoConstraints = NO;
NSDictionary *viewsDictionary = NSDictionaryOfVariableBindings(infoButton);
[self.view addConstraints: [NSLayoutConstraint constraintsWithVisualFormat:
@"H:|-15-[infoButton]"
options: 0
metrics:
nil
views:
viewsDictionary]];
[self.view addConstraints: [NSLayoutConstraint constraintsWithVisualFormat:
@"V:[infoButton]-15-|"
options: 0
metrics:
nil
views:
viewsDictionary]];
}
Alas, it is not showing up. I played around with the values of the constraints
to move it more to the middle, but still it is not there. By using
bringSubviewToFront: I force it to be the front most view, so it is no masked
by other views.
Any one sees what I am missing?
Thanks,
- Koen.
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