How can I set the colour of the status bar to be clear. No matter what I do, it is white with some alpha.
I do not want it to disappear and I want the text to be black.
In the picture it might look like nag bar and status bar are grey but actually both are white with some blur affect or nag bar has blur affect and status bar is clear.
Here is what I get despite the clear status bar background colour
The status bar has no background since iOS 7. In other words, it's clear by default.
If you see it white, it means the underlying view is white, and you need to change that.
I was having the same problem. It ended up that my view was constrained to the top layout guide when instead it should have been constrained to the superview. Even though the view is constrained to different points it will look the same in interface builder (in my case, I think this is because I was instantiating the viewcontroller to my navigation controller in code and not displaying the navbar). See the image below.
Click on the constraints for the imageview in the view above and the difference in constraints can be seen in the size inspector.
Constraining to the superview will look like this:
This results in the simulator displaying the view like this:
Notice how the status bar is clear and overlaid on top of the imageview.
Constraining to the top layout guide will look like this:
This results in the simulator displaying the view like this:
Notice how the status bar appears white and how the imageview seems constrained to the status bar (the status bar is white text on a white background fyi).
So, in order to fix this problem, you need to change the constraint of the image view to be constrained to the superview.
You change this by selecting the constraint in this list:
Once you have the constraint selected you can change what the constraint is attached to over here:
Related
I have a situation where I need to create something like this:
The problem is that the logo is higher than the navigation bar is, and I want this all to be a part of the navigation bar. I’ve tried “pushing” the logo from the top, but it doesn’t really work. If I increase the height of the logo image, it just cuts it off where the navigation bar ends.
Also, the back button should be aligned to the top of the logo image.
Currently I am using a custom view for this and hiding the navigation bar, which I hate, so if anyone has any advice/suggestions it would be greatly appreciated!
Thanks!
Try setting title view's clip to bounds and masks to bounds to false by setting
self.navigationItem.titleView?.clipsToBounds = false
self.navigationItem.titleView?.layer.masksToBounds = false
I have set an backgroundImage for my navigationbar. This works fine. But I would like to have the navigationbar height to be adjusted to the background image. At the moment the width of the background images is also not set according to the screen size.
I tried setting the height of the navigationbar like described here. This shows a bigger navigationbar for like a second but then it shrinks to its default size again.
Does anyone know how to achieve what I want? Here is an example of what I want to achieve: image
Apple Documentation:
It is permissible to customize the appearance of the navigation bar
using the methods and properties of the UINavigationBar class but you
must never change its frame, bounds, or alpha values or modify its
view hierarchy directly.
To achieve the effect seen in the image you tagged, they are most likely using a collection view to layout their data and that image is part of the collection view's header. They made the navigation bar background color clear, but the image is definitely not part of the navigation bar itself.
Apple recommends to never change the frame of a navigation bar manually because it messes with the layout code of its subviews and animation methods.
You could either subclass the navigation bar and attempt to create something similar, or go the easier route and make the navigation bar clear (UIColor(white: 0, alpha: 1) not .clear otherwise it might show up incorrectly) and have an underlying view display the image (e.x. a collection view whos header extends to the top of the view controller).
This will allow you to adjust the image height and width freely without subclassing the navigation bar, and creating potential bugs.
You can make custom NavigationBar class.
It can be help you
https://developer.apple.com/library/archive/samplecode/NavBar/Introduction/Intro.html#//apple_ref/doc/uid/DTS40007418-Intro-DontLinkElementID_2
I've created 4 subviews of white color & a yellow one as you can see in reference image I've shared below.
And I've programmatically changed the position of Tabbar from bottom to top just below to navigation bar as you can see in below image (When it is running in the simulator).
Now since I've constraints for that yellow view in image as follow
It is appearing just below to navigation bar but I want it to be displayed just below the Tabbar.
Since Tabbar is getting its position programmatically & other views (including yellow view) are getting their positions from the storyboard.
And since storyboard UIelements are get settled before any other UIelement which are coming from the program or at least get their position from programmatically.
What could be the best way to achieve what I want.
Please refer my storyboard as well to get more understanding. (Refer Below image)
I also want to fit all 5 subviews in the space between tabbar & bottom of the screen. I want to calculate 1/5th of that space & assign this height to each subview. I'd later reduce few pixels to separate them.
Why not add the height of the tab bar to the yellow view's top position? That way, you'd set the constraint something like:
Fajar.top = top + 44
If the tab bar is always visible, then that should work. But of course, if the tab bar only appears at times, you'd probably have to change that constraint programmatically depending on the change ...
I'm porting my app from iOS 6 to IOS 7 (there will eventually be a complete GUI redesign for iOS 7 but in the meanwhile just getting the existing GUI to display properly on iOS 7 is the goal.
I had the issue where the status bar was overlapping my GUI and so have shifted the Y origin of the view controller's view down by 20.
However my app contains a pulldown which when retracted is overlapping with the status bar. In the screenshot the red is a button which is present in the pulldown view. The grey bar is the top of the main view behind which a portion of pulldown is hiding when retracted.
I implemented the pull down as a fixed size child subview of the main view and when retracted its Y origin is a negative number thus it is effectively still displayed but off the top of the screen. When the user pulls it down I just animate the increase in the Y origin until eventually the origin is 0.
Is there some way I can make the pull down view appear beneath the status bar or some other quick solution?
Note of course I can't simply toggle the pulldown's alpha to display/hide it as it pullsdown obviously thus its appearance/disappearance is not a discreen action. I could maybe attempt to make the portion of it that is on top of the status bar invisible but as its something that is moving that seems like its going to be complicated. Is there any simple solution?
Thanks
Add another view, with a fixed position, under the status bar (with the same color of your grey bar), 20px tall and same width of the status bar, but with a z-index higher than the retracting view. This view will cover the retracting view (but not the status bar) acting as a "background" for the status bar itself. Obviously you have to adjust the Y position of the retracting view to make it tappable by the user (but under the status bar)
iOS 7 by default lets views take up the fullscreen, including the status bar. This is controlled using the UIRectEdgeAll property.
If you want the old style view, set UIRectEdgeNone for self.edgesForExtendedLayout
in viewDidLoad:
self.edgesForExtendedLayout = UIRectEdgeNone;
I have a UIToolBar at the top of one of my views and the shadowing shows up on the bottom of the tool bar as I'd expect. I know UIToolbarPosition is internally set to UIToolbarPositionTop.
When I rotate my device (iPad), the tool bar grows (using auto sizing in IB) and the UIToolbarPosition changes to UIToolbarPositionBottom which flips the shadow to be at the top of the bar. If I don't have the bar resize, it remains correct, but of course doesn't stretch to match screen width.
So, what gives? What would cause the UIToolbarPosition to flip on me? This is sitting at 0,0 the whole time and only changes width based on rotation.
Extra: I've considered work arounds like using a UINavigationBar. UIAppearance is probably a no go because I do have a toolbar at the bottom too and I do want my "top" different than my "bottom"
I eventually solved this using the UIBarPositioning protocol on UIToolBarand setting the barPosition = UIBarPositionTop