IPhone users are usually very picky and tied to the Apple UI Guides. Although you can pass an Apple test, you probably wonβt be able to pass on to users (which means bad reviews and ratings). Therefore, I recommend that you review the structure of your tabs and use "...". Instead of shifting it ... You can always redefine the material in the code, but then they will not work with the InterfaceBuilder interface, and in the end you will have more than you expected.
If you have similar tabs, merge them and use perhaps a segmented control or something to visually distinguish them. Or use the central navigation screen in which you can put 9, possibly more icons in the grid ...
The first solution to your problem may not always be the best way. Well, this is very rare in fact ...
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