I am new with Flutter and I'm trying to get a specific UI behaviour but without success. I have tried using a "SliverAppBar" with a "FlexibleSpaceBar" and I can get the app bar to show an image (except when it's compressed) but I can't get the rest of the elements to behave as intended.
The goal is to achieve the behaviour shown here.
Scroll down:
Body text scrolls under the bar
Title moves from body to bar while changing color and then size
Bar image gets smaller
Some elements disappear behind the bar
Some elements disappear in front of the bar
Scroll up:
Bar extends, image gets bigger until the user releases it
Related
Header image with gray bar on top
I am converting our app to fit correctly on newer iOS devices. We are using xib files for the UI. I added a launch screen storyboard to start off the new formatting. I noticed a gray bar across the top of every screen. It is not part of the view controller and I've tried removing the status bar but that only makes the text and icons disappear. I don't think it's the navigation bar either since we have that hidden as well. I have checked the Safe Area Layouts.
Any ideas on what this is and how I can remove it to extend my view all the way to the top? The blue in the image is the color I currently set the background of my view controller and we have a custom header view below that.
Using the View Hierarchy, as suggested, I was able to see the view behind my main view. I inspected the code for that initial view and found the previous developers had offset the Navigation Controller by 20. That is what created the bar on all the views. I have adjusted to remove the offset and it looks perfect now.
In my App, I have a map view and I want to use a segmented control to change the map types (Standard, Hybrid, Satellite). The way I have the app set up, the status bar is hidden and it animates in, moving the navigation bar down a bit. To make sure it doesn't look awkward, I want to make it so the segmented control is attached to the navigation bar so it animates nicely as the status bar comes in. This is basically a picture of what I want to do:
So I noticed that the segmented control is inside a toolbar, so I contain mine in a toolbar as well. I've then tried adding the toolbar to the navigationBar as a subview. (self.navigationController.navigationBar). That works well accept that it can't be tapped because the navigation bar's frame doesn't enclose the extra space, so it can't receive touches. I tried making the frame of the bar bigger, and that worked, but the title and the buttons went away. Obviously there is some way to do this, and I would appreciate any help. Thanks.
I have a UISearchBar and a UITableView positioned inside the view of a UIViewController. The table itself and the search function are working fine, but there is a problem with how the search results are layered over the top of the search bar. I'm sure there is something I have misconfigured, but being new to iOS development, I cannot figure out exactly what it is.
This is how the UISearchBar and UITableView are currently positioned within the view:
However, when your tap the search bar, the transparent overlay which appears covers it up. I would expect it to only appear below the search bar or perhaps for the search bar to move up?
If you begin to type, the search results appear, but the search bar itself has now been completed covered up:
I have tried the following:
Moving the UISearchBar to the header of the UITableView. The result of this is that, when searching, the search bar is moved to the very top of the view but when the search has finished, it then is positioned way off the the left so only the very right edge of the search bar is visible!
Disabling the Under Top Bars and Under Bottom Bars options under the Extended Edges options for the view controller (options in Xcode Interface Builder). This results in the same problem, except the Tab Bar and Nav Bar are a different colour (see image below, with keyboard hidden):
This view has been built using a Storyboard. Here is the heirarchy for reference (the Scroll View is hidden in all the screenshots as it only appears on the right once a search result has been tapped):
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;
With iOS 7 we get the fancy transparent/blurry status and navigation bars.
I saw many posts here on SO talking about the content being overlapped by the status bar.
I understand why this is happening and it's ok in my case.
Now, I was wondering since I don't have navigation bars in my app:
How shall I handle any content being scrolled behind the transparent status bar.
(Note: By scrolling I mean real scrolling through content)
In my opinion it doesn't look nice if the status bar simply overlaps the content.
Is there an easy way to make it look "nicer"? Or do I have to play with offsets and manual blur to achieve a better look?
If I have understood the question, could you not place the background image to cover the entire screen and offset the scroll view y position by 20px (the height of the status bar).
Therefore you still get the nice effect of the transparent status bar but no content ever going under the bar itself.