Can popupController move to tabbar?😓

[hstdt]

Just like apple music for iPad:

[LeoNatan]

Not possible right now, but an interesting challenge for a period of free time.

[holeg]

I vote for this too. Makes lots of sense for running in iPad.

[LeoNatan]

The problem here is that this is not a standard tab bar. Implementing this in a special case custom tab bar is more than possible.

[holeg]

hmm I think its a tabor but Apple can align the items on the left and we not. I experimented a little bit and I was able to shrink the Tabbar in viewWillLayoutSubviews so there is always a space next to it with 320 px. Then I tried to implement bottomDockingViewForPopupBar and defaultFrameForBottomDockingView in my viewController. The problem is that the PopupBar goes then over the whole screen. It starts at y=0 and not with the value I returned in defaultFrameForBottomDockingView. So If the PopupBar would be shown in the frame I return in defaultFrameForBottomDockingView and if the PopupViewController then shows also with the same y coordinate and width, its mostly done.

[LeoNatan]

defaultFrameForBottomDockingView is the frame of the bottom docking view, it does not influence the bounds of the popup bar, just position.

Recently, I introduced insetsForBottomDockingView for iOS 11 safe area support. This could be extended to include the left and right insets as boundaries for the popup bar. At the time I added this property, this was the plan, but I was short on time, and this is a major change.

Another option you have right now is to use a custom bar controller altogether and implement this on your own.

Apple’s example above is not a tab bar. Notice the background translucency is a UIVisualEffectView, rather than the standard tab bar effect view, the tab bar is higher (the height of the popup bar), etc.

[LeoNatan]

More problems to consider: You only want to display the popup bar in this way when you have a regular size class on an iPad. However if the user opens a second app in multitasking, you’d want the popup presentation to fall back to the standard popup bar on top of bottom bar.

I am not saying this is impossible to accomplish, but it is a major undertaking to make all of this in a generic way.

[holeg]

I agree, its not easy but would be nice :-)

[LeoNatan]

That’s why I left the issue open. PRs are welcome.

[LeoNatan]

I don’t think this will ever going to happen. Even Apple has moved away from embedding the MiniPlayer in the tab bar in recent iPadOS versions. A while ago I looked into some private tab bar API that allows adding an accessory view, which could have been the basis for an implementation, but the rest of the logic required so much special casing, it’s something I just can’t bring myself to implement and support.