There are a lot of talks about customization of UIBarButtonItem with custom view as an UIButton. It's quite clear. What I didn't find so far though, and what surprises me, is that there is no mentioning for custom UIBarButtonItems which handle interface rotations - its a common behavior when you rotate an iPhone, bar buttons get squeezed vertically. However, if you customize UIBarButtonItem in ordinary way (by calling initWithCustomView: method), it will stay non-squeezed after rotating into landscape orientation. Are there any workarounds for that?
Well, I've found solution with handling UIApplicationDidChangeStatusBarOrientationNotification in custom UIBarButtonItem class pretty decent.
If you can add the UIBarButtonItem from IB (you don't have to create it programatically) you can set the springs and struts to get your default behaviour. This solution worked for me.
I think you should rebuild the UIBarButtonItem (Your Custom UIButton) with new orientation image and text, or reset the frame of custom view.
- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation
{
UIButton *rightItemButton = (UIButton *)self.navigationItem.rightBarButtonItem.customView;
//resize the frame
if (isLandscape) {
} else if (isPortrait) {
....
}
}
Related
I want to developer app with a custom navigation bar like in the following images:
I think that i need to subclass UINavigationBar and add button to centre of nav bar, but i don't really know how to make navigation bar look like on image. Can you please give me advice what should i do, links to any kind of documentation would be awesome!
Similar questions about navBar that doesn't helped me:
ios back button in the bar
Use custom Navigation Bar in iOS
Custom Navigation Bar in iOS 5
rogcar
EDIT:
My idea is next: make custom navigation bar height little bigger than default size, and add background image with arrow in it and with some transparency on the edges.
If you want a button (you probably do want) you can achieve it completely by subclassing UINavigationBar. You should remember that height of UINavigationBar is read-only property.
Style but not tappable:
So let's assume we subclass the navigation bar and add button there. You could do this and it will be going look great. For example:
- (void)drawRect:(CGRect)rect
{
self.backgroundColor = [UIColor lightGrayColor];
UIButton *myButton = [[UIButton alloc] initWithFrame:CGRectMake(self.frame.size.width/2-50, 0 , 100, 100)];
[myButton setBackgroundColor:[UIColor lightGrayColor]];
[myButton setTitle:#"Normal" forState:UIControlStateNormal];
[myButton setTitle:#"Highlighted" forState:UIControlStateHighlighted];
[self addSubview:myButton];
[self sendSubviewToBack:myButton];
}
But you will facing a problem that your button is non tapeable below UINvaigationBar. (I post an image on the bottom of the answer)
So there is clearly not a path you want to follow. Don't even try that.
Style but not tappable 2:
You may override this method in your navigation bar subclass
- (CGSize) sizeThatFits:(CGSize)size {
return CGSizeMake(custom_width, custom_height);
}
And then mask it using UIBezierPath for example
The right (tappable) way:
You have to create a view stick to your UINavigationBar. What i will do here (if you want it to every screen) is:
Make a Category of UIViewController which can draw (for example - this is easiest way) UIButton.
Style this 'UIButton' whatever you want (if you want
Pin action to 'UIButton': [btn addTarget:self action:#selector(menuShow:) forControlEvents:UIControlEventTouchUpInside];
menuShow: method should be declare in your category
You can call drawing button every time you want to redraw view controller.
As you can see there there will be two separates View: UINavigationBar and UIButton. This is allow you to set content under this little button and make it tapable.
So why just don't hide navigation bar, and use different view? Because iOS7 ;) When Apple change it in iOS7 for example then you have to rebuild your pseudo NavigationBar, with only additional view, you don't need to do anything.
You do not need to subclass UINavigationBar. Create UIView add to it UIImageView as background with image in the shape you need, add button.
Subclass UINavigationController hide UINavigationBar, add custom navigation bar.
First Hide navigation bar using -
self.navigationController.navigationBarHidden = YES;
Then create UIView with required height,height of navigationBar is 44px.Then create background image view, object of required UIButton and add all objects on created UIView as a subview.It will look like navigationBar.Thank you.
You can add your custom shaped view as titleView on the navigation bar.
Just make sure that clipsToBounds is set to NO, so it doesn't get clipped.
I set a UIButton's exclusiveTouch to YES, and it works fine (other views will not receive touch-events if I touch the button). The exception is that when I touch the UIBarButtonItem on the navigation bar, its action is triggered. It doesn't happen every time, but if you tap a bit higher on the UIBarButtonItemor just tap on the status bar close to the UIBarButtonItem, it happened.
Can anyone explain why this happens?
UIBarButtonItem is not a subclass of UIView. So it doesn't have exclusiveTouch property and won't be affected by other views' exclusiveTouch.
Try this in viewDidLoad
//Set exclusive touch on each navigationItem
for(UIView *navigationItem in self.navigationController.navigationBar.subviews)
{
[navigationItem setExclusiveTouch:YES];
}
Hope this helps.
I have an app where up until now I've been using a UINavigationController with a UINavigationBar that has its property translucent = YES. This means the UINavigationController's content view (i.e. the views from the view controllers you push) to be full-screen (minus status bar).
However, if you set the navigationBar.translucent = NO, this container view becomes 44pt shorter, as I suppose Apple has assumed you don't need any content under an opaque navigationBar.
... except if you're doing what we're doing and are employing a navigationBar that scrolls away (see This Post on how to do that) So I'd like to know if this is possible.
I want to have translucent = NO, but have everything behave as if it were still set to YES. I like the functionality of the translucent = YES, but I don't actually want the bar to be made translucent by UIKit.
What worked for me was to add
extendedLayoutIncludesOpaqueBars = true
in
viewDidLoad
something like this
override func viewDidLoad() {
super.viewDidLoad()
extendedLayoutIncludesOpaqueBars = true
}
Hope it will work for you as well
It's not necessarily a good answer but you could just offset your view that high if you're not translucent.
//This won't take into account orientation and probably other details
if(!self.navigationController.navigationBar.isTranslucent)
{
self.view.frame = CGRectMake(0,0,-44,self.view.bounds.size.height);
}
You could put that in your viewDidLoad or viewWillAppear and if you have a bunch of view controllers you can just subclass them all and put your logic in the subclass.
I found a solution that works, although it is indeed a bit of a hack.
The idea is to give the translucent nav bar an opaque backing. Unfortunately I'm not happy with the solution in that it's dirty and not encapsulated and introduces some potential issues, but i AM happy because it got the job done.
In my Application's base view controller class (i.e. MyViewController : UIViewController), in the viewDidLoad method, I instantiate a new ivar UIView *_navigationBarBG and give it the same frame as self.navigationController.navigationBar. I then set it's backgroundColor property to [UIColor whiteColor] although this is how you achieve some more tint I guess. [EDIT:If you wanted to be a purist (color values remaining exactly as they come from the .psd), you could make the _navigationBarBG a UIImageView and use your custom background there, and the background of the actual UINavigationBar you set to draw clear (or stretch a 1px transparent image if you wanted to use a typical 'change your navigation bar using an image' recipe that's somewhere on the internet)]
if(self.navigationController)
{
_navigationBarBG = [[UIView alloc] initWithFrame: self.navigationController.navigationBar.frame];
_navigationBarBG.backgroundColor = [UIColor whiteColor];
[self.view addSubview:_navigationBarBG];
}
THEN, (and this is the crappy part, but I don't see any other way), I add this view as a subview. BUT, whenever you would normally make a call to [self.view addSubview: anyView], you have to make sure you call [self.view insertSubview: anyView belowSubview: _navigationBarBG];
if (_navigationBarBG)
[self.view insertSubview: anyView belowSubview:_navigationBarBG];
else
[self.view addSubview: anyView];
If you forget that, these added views will slide under your navbar background and look weird. So you need to know that this is a source of error.
WHY AM I DOING THIS? Again you might ask... I want to be able to have a scrolling navigation bar that scrolls out of the way when you scroll down your table view, thereby giving the user more screen space. This is done by using the scrollView delegate (scrollViewDidScroll:) and also viewWillAppear:
// FIRST DEAL WITH SCROLLING NAVIGATION BAR
CALayer *layer = self.navigationController.navigationBar.layer;
CGFloat contentOffsetY = scrollView.contentOffset.y;
CGPoint newPosition;
if (contentOffsetY > _scrollViewContentOffsetYThreshold && self.scrollingNavigationBarEnabled) {
newPosition = CGPointMake(layer.position.x,
22 - MIN((contentOffsetY - _scrollViewContentOffsetYThreshold), 48.0)); // my nav bar BG image is 48.0 tall
layer.position = newPosition;
[_navigationBarBG setCenter: newPosition]; // if it's nil, nothing happens
}
else
{
newPosition = kNavBarDefaultPosition; // i.e. CGPointMake(160, 22) -- portrait only
layer.position = newPosition;
[_navigationBarBG setCenter: newPosition]; // if it's nil, nothing happens
}
I was looking for an answer to this as I wanted my subviews to be at (0,0) and not (0,44)(in reference to the Screen bounds), but I could not find an answer on how to set this in the NavigationController, which I thought would be an included property.
What I ended up doing that was very simple is adding a subview to the navigation controller that was the width and height of the Navigation Bar, but then insert the subview below the Navigation Bar.
Now the setting is Translucent = YES, but it still appears solid and the subviews behave how I want.
EDIT: After re-reading your original post, I suppose if you're going to be rolling the nav bar away, you'll have to take into account hiding and showing the new subview as you do the same with the nav bar
I'm using the new UIAppearance API in iOS 5 to style a UISegmentedControl with custom graphics. I need to be able to set some segments to be disabled at times during execution, but the UIAppearance methods don't seem to allow me to set a divider image for the UIControlStateDisabled state.
I'm calling:
[[UISegmentedControl appearance] setDividerImage:disabledSelectedImage
forLeftSegmentState:UIControlStateDisabled
rightSegmentState:UIControlStateSelected
barMetrics:UIBarMetricsDefault];
where disabledSelectedImage is a resizable image from this resource:
Yet when I set the left segment to be disabled ([UISegmentedControl setEnabled:forSegmentAtIndex:]), the result is this:
You can clearly see that the UISegmentedControl has defaulted to use the UIControlStateNormal-UIControlStateNormal divider image.
It seems perfectly happy for me to set a background image using UIControlStateDisabled
[[UISegmentedControl appearance] setBackgroundImage:disabledImage
forState:UIControlStateDisabled
barMetrics:UIBarMetricsDefault];
(and respects the image I supply while in the disabled state) but not a divider image. Has anyone come across this or found a solution?
I've decided that this must be an iOS bug and have filed a radar with Apple. My solution to the problem for now is to remove segments, rather than disabling them.
A bit of an ugly workaround but i managed to fix it with the following until apple fixes it itself.
First you need to subclass UISegmentedControl and add the following:
#implementation MJSegmentedControl
- (void)layoutSubviews
{
[super layoutSubviews];
NSInteger cachedIndex = self.selectedSegmentIndex;
self.selectedSegmentIndex = 0;
self.selectedSegmentIndex = cachedIndex;
}
#end
I haven't had a need to use the appearance controls of iOS 5 yet but if all else fails you could add the resizable image as a child of the segmented control to cover up the ugliness. It's a hack, but it may work and will be relatively forwards-compatibile. Just be certain to set the autosizing masks appropriately.
I had the same issue and it really seems to be a bug. However I've found a solution (a workaround).
I've used XIB file with a controller. In XIB file segmented control was just placed and all of the customisations were done in -viewDidLoad method.
Then I've created a UIView subclass which represented entire view in the XIB. It made possible moving all view customisation code to the -awakeFromNib method of this UIView subclass. After moving this code the divider images were set properly.
As suggested by Fernando in this thread:
Customizing UISegmentedControl in iOS 5
You can try to dispatch your UISegmentedControl settings on the main queue via:
dispatch_async(dispatch_get_main_queue(),^{
// disable part of the segmented control
[self.eventScopeSegmentedControl setEnabled:NO forSegmentAtIndex:2];
});
I did this in viewDidLoad and it worked fine for a while but when my app is really busy at startup, this doesn't always work. I'm guessing there's a race condition that may still revert any settings you made when the appearance proxy goes to work.
I added another ugly hack to make this call in viewWillAppear (after the call to super:viewWillAppear) with a flag (set from viewWillLoad) to ensure this only runs once.
There is actually a pretty simple way to get this done. The current behavior is obviously a bug so this is not an ideal solution but simply a workaround that works beautifully. Namely, use an additional UIView as a "disabled visual cue".
The general steps:
Add a UIView as a sibling to the UISegmentedControl. Ensure the UIView is in front of the UISegmentedControl
Apply the desired color and a transparency to the UIView to match your app skin
Move the UIView to be exactly on top of the UISegmentedControl
Shape the UIView to have the exact size top of the UISegmentedControl
Apply a rounded corner to the UIView to mirror the exact shape of the UISegmentedControl
When the UISegmentedControl is supposed to be disabled, simply show the UIView and disable the user interaction on the UISegmentedControl.
When the UISegmentedControl is supposed to be enabled, simply hide the UIView and enable the user interaction on the UISegmentedControl.
In both cases do not change the UISegmentedControl.enabled property.
Note that it seems like a lot of steps but all of this can be coded in so to add support for disabling your custom UISegmentedControl becomes pretty much a 1 liner after you add this to a configure segmented control method.
Here is how my custom segmented control looks when applying this solution:
Enabled Segmented Control
"Disabled" Segmented Control
Here are some code snippets of interest:
Shape the UIView to match the UISegementedControl (load time configuration)
UISegmentedControl* segmentedControl = ...
//Segmented Control disabled visual cue view
UIView* view = ...
//Step #2
view.backgroundColor = [[UIColor whiteColor] colorWithAlphaComponent:0.6];
//Step #3 and #4
view.frame = segmentedControl.frame;
//Step #5
view.layer.cornerRadius = 5
view.clipsToBounds = YES;
//Ensure this is disabled by default
view.userInteractionEnabled = NO;
Enable/"Disable" UISegementedControl (runtime state change)
BOOL segmentedControlEnabled = ...
if(segmentedControlEnabled) {
segmentedControl.userInteractionEnabled = YES;
view.hidden = YES;
} else {
segmentedControl.userInteractionEnabled = NO;
view.hidden = NO;
}
That's it.
-
I'm trying to use a UIBarButtonItem to put a title on my UIToolbar. I'm using the plain style and that looks fine, but I can't seem to get it to stop highlighting on touch. The Shows Touch When Highlighted option isn't available for the bar button items. Is there a quick and easy way to do this? I'm trying to do the building in interface builder so I can see what I'm doing. I'd prefer not to build the toolbar in the view did load every time.
The property responsible for this is accessible in the UIButton class:
myButton.showsTouchWhenHighlighted = NO;
You can access this (programmatically) in a UIBarButtonItem by assigning a UIButton to the bar button item's customView property, and configuring the button. You can do this in Interface Builder too: drag a UIButton onto a UIToolbar, and it will automatically embed it in a UIBarButtonItem for you - then look for the "Shows Touch On Highlight" checkbox under the button's settings.
Incidentally, I don't know how you're customising your buttons so feel free to ignore this, but if your button looks and behaves like a standard toolbar item then users will expect the glow effect.
I wanted a solution that could be used without any modification to my XIB structure.
The most obvious and simple one worked: subclass UIBarButtonItem:
UITitleBarButtonItem.h:
//
// UITitleBarButtonItem.m
// Created by Guillaume Cerquant - MacMation on 09/08/12.
//
/*
* A UIBarButtonItem that does not show any highlight on the touch
* Drag and drop a normal UIBarButtonItem in your xib and set its subclass to UITitleBarButtonItem
*/
#interface UITitleBarButtonItem : UIBarButtonItem
#end
UITitleBarButtonItem.m:
#import "UITitleBarButtonItem.h"
#implementation UITitleBarButtonItem
// Only caring about UITitleBarButtonItem set up in Interface Builder. Update this class if you need to instantiate it from code
- (void) awakeFromNib {
UIView *theView = [self valueForKey:#"view"];
if ([theView respondsToSelector:#selector(setUserInteractionEnabled:)]) {
theView.userInteractionEnabled = NO;
}
}
#end
Tested on iOS 5 and the one we aren't allowed to talk yet.
Alternative: Use a UIBarButtonItem in the plain style and additionally cover the toolbar in the appropriate area with a UIView that has a clear background. The view consumes the taps and hides them from the bar button item. Make sure you set the autoresizing mask correctly.
My solution was to set it to disabled, and adjust the titleAttributes for each UIControlState
let attributes: [NSAttributedStringKey: Any] = [
.font: UIFont.boldSystemFont(ofSize: 16),
.foregroundColor: UIColor.white
]
barButton.setTitleTextAttributes(attributes, for: .enabled)
barButton.setTitleTextAttributes(attributes, for: .disabled)
barButton.isEnabled = false