In my iOS application I have a login page that leads to the main pages. You can navigate between these pages with a tab bar. On each of these pages you can log out and return to the login page using the dismiss function. I wanted to know if by doing this I was leaving some controllers in a vacuum without having unloaded them.
For example, if I log in, go to the second tab and log out, will the first tab be unloaded?
And more broadly how does navigation with a tab bar work if it's not a stack?
On successfull login change root of application to TabBarController.When user kill application and launch again then set root according to the login status of a user. And when user logout from application then again change root to login controller.
Please check attached link
Related
I implemented the login, sign-up with jetpack compose on an app. I redirected the logged-in users to the main screen and keep the new user on to the login screen. But the problem is when I redirect the user from the login screen to the main screen and the user press the back button the login screen appears. Now I know it's a normal behavior of the navigation component but I need to change it. How can I do that?
Used this line for navigating to the main screen from the login screen
navController().navigate("main_screen")
You can remove last item from the back stack before navigating to the main screen using popBackStack:
navController.popBackStack()
navController.navigate("main_screen")
Within the application's webview I open the apple page for login. In the app, the iOS system knows it comes from apple so the action sheet shows up for biometric authentication.
All good and all works fine. I can authenticate myself and I will be successfully logged in. The icon in the action sheet is loaded from the app, but the app name is not present. Instead it shows null.
Currently I tried to
add title to navigation item,
add title to web view controller within the navigation
the webview title however is empty. It is out of my scope to set this up, because the webpage comes from apple.
I added App Name to WKWebView in storyboard (btw, I can't seem to figure out what exactly is App Name in this case as WKWebView doesn't seem to have any reference in the code and no documentation)
As far as I know the icon in the action sheet is loaded from the application, so I would believe the name would also be loaded from the app.
Please see the screen view.
In iOS 13 Safari, when you long press on a link, you see a preview of the linked page, along with some menu items. If you tap the preview, you navigate to that page.
Now, I see how to intervene in the long-press-and-preview process. This used to be peek-and-pop, but in iOS 13 that's deprecated and we're supposed to use func webView(_:contextMenuConfigurationForElement:) and so forth. Fine, but how would I imitate what Safari does?
The problem is that as my preview provider I have to supply a view controller. So I'm going to need a different view controller with a web view showing the linked page. Okay, I can do that. But then when the user taps the preview to dismiss it, I want to respond by loading the same linked page into my real web view.
But that's the problem. That loading takes time. In Safari, by contrast, when you tap the preview, boom, there's the same page already loaded. How do they do that? How would I do the same thing? How can I load the page into a different view controller, cache it, and communicate that cached page back to my real web view?
I am working on an app on xcode Version 6.2, it is quite a simple app. You can register and login for now however whenever i try to login with the correct username and password it loads the "protected" page the automatically sends me back to login page showing me this error code:"2015-10-25 23:22:48.254 Test[46561:6996119] Warning: Attempt to present on whose view is not in the window hierarchy!". When i stop building the app and then build it loads the "protected" page and i am signed in and can logout.
I am quite new to xcode and i followed a tutorial on Youtube then tried to modify it.
I am using Parse to store data if that is to any help..
I can provide the view of the different views and code
It is hard to debug without any further info, but my guess is that you are likely trying to present a view controller whose views you are adding into the UIAlertView that pops out that notifies whether your login is successful. So for example, if you are trying to add some views into the UIAlertView after it has been dismissed, this error will show up.
If that is the case, use presentViewController:animated:completion in your login view controller to present the secret page instead.
If that doesn't help, please post the code regarding your login completion block from Parse.
My view hierachy
When i login(purple page), the initial page(green page) is presented before "protected"(red page) is loaded.
My phonegap app, I want to bring back login when user logs out. But If I use,
$.changePage('#login');
after logout. It makes navigation stack unmanageable specially navigating with Android back Button . Can I reset my Navigation stack after logout.
Try using
$.mobile.navigate('#login');