New answers tagged dropdown
You would need to test each page, from experience users go for speed/ ease of use over consistency. Where the information in the drop down is extensive ( eg a list of towns) predictive lettering is really good)
Even though Apple recommended (and surprisingly still recommends) pickers for dropdowns, not even they use it anymore. Spoilers: In both these cases, the "logic" would dictate to use a dropdown + picker. Apple chose a much better solution for their own apps. Still, a whole screen to pick between "Female" or "Male" (pardon the binary example) seems ...
You might be mixing up use cases. Bootstrap might be responsive, but it's mainly focused on quickly bootstrapping websites. Whereas Material Design was created with a very heavy focus on mobile interactions. I would argue that, while on bootstrap you do have a dropdown + call-to-action button, on Material Design the second part is not a call-to-action. It ...
If the sub-categories are not more than 2 in each category then show it upfront, by placing category as title. This way you will not confuse the user and also you are not hiding the information. But if you have more category with sub-categories then you have to find a work around on IA.
If there's no way to get around submenus, the key is to provide a clear visual difference between levels and making it clear which main menu the submenu corresponds to. There's probably a million different ways you could do that, but the most common tend to involve changes in: Indentation Color Font size, weight, or family Spacing/delimiters Casing In ...
This article outlines the most common mobile navigation patterns and should help you choose the right navigation approach for your scenario: https://www.nngroup.com/articles/mobile-navigation-patterns/
Sending post within the UK and abroad requires lots of decisions and different bits of information depending on previous selections. It's probably a similarly complex process in many other countries too, but the UK Royal Mail Price Finder actually does a pretty good job of this, as it's otherwise a bit of a nightmare. The overall impression is reasonably ...
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