"PopFrom" a view programmatically

Targets iOS
1

Hi

I want to put in a ‘Home’ button which will pop any pushed views, so the user doesn’t have to keep pressing ‘back’. Is it possible to “PopFrom” a view programmatically? And to see how many are on the stack?

Thanks

Chris

2

Hi. I’m still looking for an answer to this, if it’s possible. Can I do it through declares?

Thanks

3

It sounds like what you’re really wanting to do is close views on the stack, in reverse order. I guess you could do that by building your own stack - an array of iOSView - and closing each one or just closing the first one that you Pushed which should close all the child views?

4

Thanks very much Jason. I’ll try that.

5

You could do that but I think you’ll see the animation of each view being closed in turn. That may or may not be a problem for you. I don’t believe there’s a cleaner way to do this currently.

6

you can go to the top of the stack:

[code]Sub goHome(animated as boolean=true)
Declare Function NSClassFromString lib “Foundation”(cls as CFStringRef) as Ptr
Declare function sharedApplication_ lib “UIKit” selector “sharedApplication”(cls_ptr as Ptr) as Ptr
dim shAppPtr as Ptr=sharedApplication_(NSClassFromString(“UIApplication”))
Declare function keyWindow_ lib “UIkit” selector “keyWindow”(app_ptr as Ptr) as Ptr
dim keyWinPtr as Ptr=keyWindow_(shAppPtr)
Declare Function rootWiewController_ lib “UIKit” selector “rootViewController”(winPtr as Ptr) as Ptr
dim rootWiewControllerPtr as Ptr=rootWiewController_(keyWinPtr)

Declare Sub popToRoot lib “UIKIT” selector “popToRootViewControllerAnimated:”(oPtr as Ptr,animated as Boolean)

popToRoot(rootWiewControllerPtr, animated)
End Sub
[/code]

7

Nice work Antonio!!

8

Antonio, that’s cool, I didn’t realise you could do that, even from an ObjC/Swift app.

9

Very cool - and very helpful, too! Thanks for sharing this, Antonio.

Note that you can suppress the animation and return directly to the initial view, like this:

popToRoot(rootWiewControllerPtr, False)
10

Now you’re making it too easy for me Antonio :slight_smile:

Thanks very much - a great help