How could I create this custom tabbar and what does it consist of?
On cocoacontrols.com you can find several TabBar implementations similar to this.
iOS 5 now allows to change the background image of the tabbar but this kind of custom control is much more complex.
You would basically need to write your own view and controller that would change between views, move the arrow accordingly and activate/deactivate the buttons.
As of the elements it consists of, i would say
One background image used for every element
The different icons in normal and selected state
A UILabel for every element
The blue divider
The arrow, separate from the divider to simplify the animations...
To see how a tabbar with an indicator could be coded check out this project on GitHub for a Twitter-like tabbar.
Related
I have designed a custom tabbar and the developer says the design I created can't be done.
The screen is made up of a usual background with a tabbar. I'd like my tabbar to look a little different to the usual iPhone style. I would like at the bottom of the tabbar a grass illustration (transparent) and on top would sit all the separate buttons and on top of those would be the icons. All of these images (as seen in link below) are separate .png files.
When the user scrolls the content, it will scroll under the transparent grass. The buttons of course will be clickable and have a different view for an active state.
Please see the link below to see a mock-up of the image:
http://www.stuartkidd.com/dummy.jpg
I'd appreciate if the community could explain to me if this could be done and if so, how. I thought it would have something to do with 'creating a custom tabbar'.
And a further question, if it can be done, can also the tab buttons be horizontally
scrollable with a swipe action?
Thanks,
It all can be done but you are going against the Iphone UI guidelines. You won't be able to leverage the UITabbarView to do what you want so you'll basically have to write the whole thing from scratch. Your tab bar would be a scroll view with a row of buttons representing each tab. When a button is clicked you load in the appropriate view. The UITabBar controller gives you a lot of functionality for free and I suspect once you start working towards this you'll see exactly how much extra work this will end up costing you. Going against the way Apple does things can be a slippery slope.
Another idea might be to keep a hidden UITabBar to manage the tabs and call it from your custom tab bar. This would free you from a lot of the hassle of swapping views/controllers in and out.
You can create a row of custom buttons and have 2 subviews. One for the bottom navigation bar and one for the content view where you will be swapping your content based on what is pressed.
You can have a state which maintains what was clicked. Based on that you can set the button enabled state for every button in your bottom bar.
button.selected = YES
It will be easy to handle the touch up inside events and properly load appropriate views in and out of the bigger subview as they will be part of the same view controller.
I have implemented a similar functionality and it works well but still in process of submitting it to the app-store.
I am doing a lot of researching lately about how to get a different looking with nice effects UITabBar on my iPhone app, but unfortunately I am only finding things on how to replace background color etc.
Well, I've checked out this app called Momento which is pretty cool and presents a very slick tabBar:
So there are a couple of elements here I would like to ask you guys if you could help me by giving me the right directions on how to get a similar effect :)
Arrow above items: as you can see this app has this animated arrow that runs above the selected item with a very smooth animation.
Selected Stated of the item's image is not that blue-ish default one neither the default state which displays in a different shade of brown and gray version.
nice Items separators with beveled vertical lines.
different background image for the tabBar
different height for the tabBar
At this point after some research I am able to set the height and background image by subclassing UITabBarController but I'm still not sure on how to accomplish the other items specially the first one related to the nice arrow effect.
How do I do this? Please clarify what can or can't be done by subclassing the UITabBarController and specially if can be done in Interface Builder.
There's a project on github called BCTabBarController that aims to mimic the tab bar used in Twitter for iPhone. It's got some of the things you're looking for, and should give a great starting point.
Both of these are good answers, but both libraries have problems: BCTabBarController doesn't know how to create the "blue" highlighted version of a tab bar icon; and iDevRecipies doesn't send events to child viewcontrollers nor resize the navigation bar on rotate.
Be warned: custom nav bars are a lot of trial-and-error debugging (as I have found).
Simply use a UIView with TabBar width and height.Add custom background image and custom buttons on the view.Set the fileowner of the view as AppDelegate.Now you can simply connect the IBActions with the buttons.The Custom view can be placed over the tabbar by addSubView to the TabBar controller's view.You can switch between viewcontrollers by using the setSelectedIndex method of tableviewcontroller in the button action.
Just curious if the tab bar UI element in screenshots is some built in class or customized.
If it is customized, then please give me a hint on what classes I might check to have something like that.
The first screenshot is initial tab bar. When I tap on the last icon the tab bar smoothly(animated) resize itself as on second screenshot. If I press the edit button the icons are shaking(as on iPhone home) and I'm able to arrange them.
first
tab bar http://img686.imageshack.us/img686/3899/photo2aw.jpg
second
more buttons http://img38.imageshack.us/img38/5673/photo3kq.jpg
The tabbar in the top image could just be a standard tabbar with a non-standard color scheme.
The bottom image is a custom element most likely implemented in an UIActionSheet.
Gotta say, this is a butt ugly UI using non-standard (and therefore confusing) elements. I wouldn't suggest trying to emulate it.
Looks like it's custom. You might just want to look at subclassing UIView and putting a bunch of buttons it stored in a NSArray. That way, when you re-arange them, you just have to move the objects to a new position in the array.
You should be able to achieve the shaking by using simple UIView animations.
I am creating a custom tab bar for my iPhone app and I need to change the images. I have changed the actual tab bar background, but I need to know how to add custom images for the icons and their respective "selected" icons. I also need to remove the square highlight that is default. Pretty much, it just needs to be my icons. Also wondering if the images can be coloured or not. I've looked a lot of this, but no one seems to have the solution.
Someone please help.
hide the inbuilt tabBar view
create your own custom UIView (or UIScrollView in case if you need more number of tabs) with the frame of inbuilt tabBar view and fill up, especially with array of UIButtons & then add your custom view as a subview of the TabBarController.
Play with the UIButton's background image (which is your tab icon image) and its addTarget:action:forControlEvents: in order to set the appropriate selectedIndex value of the TabBarController, i.e. set the selectedIndex according to the button's position in the custom view.
This is how I've implemented :)
No. You cannot customise the tab bar icons in the UITabBar.
They are designed to be used with an alpha masked image.
Someone discovered a way to hack the colours though here: Custom colors in UITabBar
I want to add some custom buttons and realize the same effect like the iPhone's home screen. What I can think of is to calculate the position of each button and add them to the view. Are there any other ways to do this? e.g. add buttons to the tableview
Check TTLauncherView from Three20,
I realized the same view of the thumbnails in the photo app (which in principle differs only because of the background color and the rounded effect of the buttons) using a custom cell (with 4 UIButtons inside) in a normal tableview.
In my case, this is because I need to scroll up and down, in your specific case there should be a way to "lock" the table from scrolling. By the way, for this reason, it could be simpler to design the custom view in the interface builder, it is very quick to design such a view, and then create a custom controller to provide simple methods to assign icons and actions to the UIButtons dynamically.
You could also look at the Three20 libraries as already suggested, it is already implemented, but you app will easily be rejected by Apple if you do so.