I've downloaded an Download Manager from App Store and noticed that the app scrolls an UITabBar,like: When the user press a button the bar walks left and show other option to the user.Is that really possible and does Apple accept these type of customization in UITabBar?If it's possible how can i do that,please provide some sample code or reference.
Yes, possible. but not using usual UITabbar. you have to create custom tabbar that behave the same. there are projects out there that you can use, save a lot of time of your work.
infinitetabbar : A scrolling tab bar with space for infinite items
jsscrollabletabbar : JSScrollableTabBar is a simple, refined tab bar UI control that resembles the TabStrip found in the popular Three20 library but without any of the dependencies.
It is probably a custom-made control (a scroll view with a few child buttons). It's perfectly acceptable at the Store if you don't use any undocumented functions.
Yes, you can implement scrollable tabbar using UITabBar.
Adobe writer maybe thought about using only UITabBar, so he mentioned it can't be implemented, but if you use ScrollView and UITabBar, it can be implemented.
Put tabbar on scrollview, scrollview size is 320,460 (it excludes status bar size).
TabBar size is any size you want, scrollview contentsize must be equal to tabbar size.
Related
We're creating an application with a design concept similar to Snapchat. On the base level, we have three Views that are supposed to be horizontally swipeable, with the camera view being in the middle.
The Views are also supposed to be selectable via a Tab Bar. While the views are being swiped, the transition should also manipulate the color of the Tab Bar aswell as the size of some elements on the Tab Bar, similar to how Snapchat does it:
Our UI Designer made a mockup for our specific application in Adobe XD:
The button has been made independent from the Tab Bar, as it is supposed to do some interaction with the controller beneath, even if the Tab Bar disappears.
I've been trying to figure out how to best implement a navigation like this for about 10 hours now. I've come as far as trying to create my own AnimationController for animating between Tabs coupled with a custom InteractionController, but those have been unsafe and buggy at best, and I still haven't figured out how to animate the button at the same time as the views.
Has anyone tried to implement a design similar to this and succeeded? Could you lead me in the right direction of which methodology to use to achieve a design like this?
Thanks in advance everyone.
I need some help figuring out how to fix the layout of a navigation bar in an iOS app. When adding navigation to 'child' views of a given screen, my approach so far has been to add buttons to the 'leftBarButtonItems' collection of the UINavigation item. As long as the number of buttons doesn't exceed 3 or 4 everything works great.
Unfortunately, I now have a screen that requires additional buttons. Everything seemed to build fine, but when I actually run the application I end up with a jumbled mess like this:
Is there a better way to layout a UI with nav and toolbar buttons like this? If putting the buttons in the nav bar is actually the correct way, what do I need to do to make the layout handle cases where the content can't fit?
I wouldn't bother with adding any extra buttons. Users expect most apps to behave in similar ways, and (while this is technically possible) it's an unusual thing to do.
Apple's HIG states:
Avoid crowding a navigation bar with too many controls. In general, a navigation bar should contain no more than the view’s current title, a back button, and one control that manages the view’s contents.
And, even if you choose to ignore Apple's HIG, this will certainly won't be good for accessibility. Your users can (and will) change the text size with Dynamic Type - so your assertion that it's OK if the "number of buttons doesn't exceed 3 or 4" will be proven false by someone.
You'd be better to add a toolbar instead, or find some other way of providing those features.
The navigation bar often has the title of the previous view on the left side. The right side contains a control, like Edit or a done button, to manage content within the active view.
Navigation bar Example
Apple documentation recommends to avoid crowding a navigation bar with too many controls.
A navigation bar should contain no more than the view's current title, a back button, and one control that manages the view's contents.
For the back button you should use the standard one. As for the text-field it should have enough room. If items in the nav bar are crowded consider separation by inserting fixed space by using UIBarButtonSystemItemFixedSpace constant value in UIBarButtonItem.
For more information visit the following link.
The way to go when you need 3 or more items is by using either nav bar or toolbars. You can combine both nav bar and toolbars. For more information use apple documentation on toolbars.
I'm building an instant messenger app in iOS. In particular I'm implementing the UI for a conversation in the most typical way, that is placing an input bar at the bottom of the view (UICollectionView to be clear) that scrolls above the keyboard.
Now, I'm wondering if I should implement this view as a UIToolbar with UIBarButtonItems instead of a custom UIView with UIButtons. What are the advantages of a UIToolbar?
I don't think there is much difference other than convenience. With a UIToolbar you get the following:
UIBarButton items are arguably simpler to add to a tool bar and the
layout is automatic, whereas it is a bit more complicated adding
buttons to a view.
You can set hidesBottomBarWhenPushed on the view controllers to
hide the bar when a view controller is pushed to the nav stack.
Looks more familiar to other apps, including Apple's own apps.
If you use a UIView with buttons you have more flexibility in the appearance but you have to do a bit more work, but other than that I can't really see much difference.
UIToolbar will provide automatic placing of your buttons, saving you from pain of placing those buttons. It was designed specifically for this reason.
I am developing an application that requires a scrolling UITabBarController. The customary 5 tab items max with the 5th being the More.. tab just won't do. I have found some pretty great third party classes such as https://github.com/Marxon13/M13InfiniteTabBar and they are great and have the functionality I would like but still, things aren't perfect. When I rotate my device to landscape things become glitchy.
Basically, I am fed up and want to create my own custom UITabBarController with scrolling..how would I go about doing this? I understand I would most likely put a UITabBar within UIScrollView but I am lost without a detailed tutorial of sorts..
Any help would be greatly appreciated! Thanks!!
The way I would approach this is to avoid modifying the UITabBar, since it is highly specialized, and create a UIViewController subclass that will provide this functionality for you. This view controller should have a container view (take a look at this Apple documentation for more detailed information) that will have each child view controller's content view.
For the actual tab bar itself, you have a few options depending on what you similar you want it to the standard UITabBar.
You could have a super basic tab bar that consists of a UIScrollView with standard UIButtons that change/load the correct content view controller. Creating the tab bar would be then easy, simply add the buttons to the scroll view inside some type of loop (you could have the x positions be a multiple of the tab index to make positioning easier). UIButtons have support for a selected button state that you can use. You can change the scroll view's background.
You could have a fancy tab bar which is constructed essentially like the above, but by having a custom UIButton subclass instead of a standard UIButton. This will allow you to implement a more intricate design (i.e. with and more customized touch handling.
Tips:
Use [myImage imageWithRenderingMode:UIImageRenderingModeAlwaysTemplate] to have your tab images tinted like the standard tabs when selected.
Design the basics of your custom view controller in your storyboard. It is really easy to add the child container view and the scroll view this way.
Hope this helps!
I'm making an application that requires the use of a dock (think Mac dock) where I can have different items that I can drag out onto a map view.
It would make sense to me to just use and subclass a UITabBar, since you can easily add items to that bar in the interface builder. However, I'm not sure how I would transform a UITabBar into something more dynamic like the Mac dock, where things are only highlighted when the user touches them, copies of that tab can be dragged out, ect.
To that end, just a side question, what's the difference between the UITabBarDelegate and UITabBarControllerDelegate protocols?
I also thought of another way I could implement my task bar/dock using some sort of collection view with UIImageViews. That would be easier in terms of implementing drag and drop, highlight selection, ect but I would lose that nice, native iOS feel that the UITabBar has.
Any suggestions?
do one thing. create a custom class for tabbar add a view over it. and add image views over the view place small images in that view and add gesture recognizer over it. When the finger comes over it replace the smaller image with the larger one. and also change the tab bar selection if the user taps over it. you can do this by using tabbar property. or you call the tabbar delegate manually when the tap is made.