iOS - Resize UISwitch in UINavigationBar - ios

Question

I am trying to use a UISwitch in my UINavigationBar. I want a smaller switch than the default, so I am scaling the size down with anonymousSwitch.transform = CGAffineTransformMakeScale(0.55, 0.55); When I do this, the switch shrinks, but I cannot figure out how to align it vertically with the other elements in my UINavigationBar.
Here is what it looks like currently:
Ideally, the UISwitch would be spaced away from the 175 UILabel as much as the X UIButton is spaced from the 175 UILabel, and the UISwitch would be in a straight line with the rest of the elements in the UINavigationBar. I tried doing switch.center = CGPointMake(switch.center.x, shareButton.center.y), but this did not affect the placement of the UISwitch at all.
Is there any way for me to position the switch like I want?

Answer 1

I had the same problem.
I tried to solve it and came up with this solution.
I don't think it's a perfect solution and might not work on every iOS-Version.
First you need to subclass UISwitch like this:
#interface UICustomSwitch : UISwitch
#property (assign, nonatomic) CGFloat scale;
#end
#implementation UICustomSwitch
- (void)setFrame:(CGRect)frame {
CGFloat superview_height = self.superview.frame.size.height;
frame.origin.y = (superview_height - frame.size.height * _scale) / 2;
[super setFrame:frame];
}
#end
The second thing to do is to create and setup your UICustomSwitch like that:
UICustomSwitch* switch = [UICustomSwitch new];
switch.transform = CGAffineTransformMakeScale(0.75, 0.75);
switch.scale = 0.75;
UIBarButtonItem* button = [[UIBarButtonItem alloc] initWithCustomView:switch];
To create a bigger space between the 175 and the switch you could just add another UIBarButtonItem between the 175 and the switch. E.g. a fixed spacer with a specific width.
Like i said, i don't think it's a flawless solution.
In my tests it worked.
Another solution by 0yeoj (but a little bit adjusted -> always centered for every navigationBar height, for toolbars it's the same, just use self.navigationController.toolbar.frame.size.height ):
UIView* switch_container = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 44, self.navigationController.navigationBar.frame.size.height)];
UISwitch* switch = [[UISwitch alloc] initWithFrame:switch_container.bounds];
switch.transform = CGAffineTransformMakeScale(0.75, 0.75);
switch.center = CGPointMake(switch_container.bounds.size.width/2, switch_container.bounds.size.height/2);
[switch addTarget:self action:#selector(action:) forControlEvents:UIControlEventValueChanged];
[switch_container addSubview:switch];
UIBarButtonItem* button = [[UIBarButtonItem alloc] initWithCustomView:switch_container];
self.navigationItem.rightBarButtonItem = button;

Answer 2

Have you tried moving switch with another transform method like,
CGAffineTransformMakeTranslation(xValue, yValue);
also you can merge two transform together and give that transform to switch like,
CGAffineTransform scale= CGAffineTransformMakeScale(0.55, 0.55);
CGAffineTransform translate = CGAffineTransformMakeTranslation(0, 10);
anonymousSwitch.transform = CGAffineTransformConcat(scale, translate);

Answer 3

This is the code i tested..
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
UIButton *xbutton = [UIButton buttonWithType:UIButtonTypeCustom];
xbutton.frame = CGRectMake(0, 6, 35, 35);
xbutton.backgroundColor = [UIColor redColor];
UIView *containerView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 44, 44)];
UISwitch *switchButton = [[UISwitch alloc] init];
switchButton.frame = CGRectMake(0, 0, 35, 35);
switchButton.transform = CGAffineTransformMakeScale(0.55, 0.55);
switchButton.center = CGPointMake(containerView.frame.size.width/2, containerView.frame.size.height/2);
[containerView addSubview:switchButton];
UIBarButtonItem *additionalButton = [[UIBarButtonItem alloc] initWithCustomView:containerView];
UIBarButtonItem *xBarButton = [[UIBarButtonItem alloc] initWithCustomView:xbutton];
//rearrange it if necessary
NSArray *arrayButton = [NSArray arrayWithObjects: xBarButton, additionalButton, nil];
self.navigationItem.leftBarButtonItems = arrayButton;
}.
hmm... i haven't DOWNGRADED yet to yosemite so i dont have ios8.3 here this code works perfectly for me though..