I want to detect when any notification of any app comes in.
I was looking for a sort of "window will open" event, to detect when the notification window pops up, but as far as I can see there is no such thing.
Would it be possible to use the "viewWillStartLiveResize" in some way or another for this purpose ?
Or is there any other way to detect a screen change event?
viewWillTransitionToSize:withTransitionCoordinator: or traitCollectionDidChange: should be enough to detect app screen size change (especially on an ipad split mode). But in your case that's not possible - you have an access to your and only your app views hierarchy. Push notification windows pops up over your app on a springboard view hierarchy. So as notification center, etc. They just don't resize your app's window, they overlap it.
Related
I've added local notification with Notification Content Extension.
It shows okay on home screen (with app in background).
The problem lies in displaying notification content on lock screen. When notification arrives on lock screen, it is only displayed with text and swiping left shows "Clear" button.
I need some way to show notification fully from lock screen (as on home screen).
For example I saw "View" button in some of the tutorials/articles, can I even create or control something like it?
So with notifications on iOS 10, Apple changed the way they appear on devices. When the screen is locked, you can see a View and Clear button or just clear button based on whether the device is enabled with 3D touch or not.
Swiping left on a message now offers View and Clear on non-3D Touch devices or just Clear on 3D Touch devices.
On 3D Touch devices, the long press on notification reveals the notification actions menu which can be customized using Category definition in the code.
Hope this answers your query.
I want to develop an iOS app that can have like a panic button when the screen is locked. This button can be enable or disabled within the app, but
I want to know if it is possible to add a very accessible button you can press in case of an emergency even when the screen is locked. When the button is pressed I want to execute some code in the app.
Is there a possible way of accomplishing this in iOS?
Or is there an alternative?, The only think that I required is that the button can be pressed like in maximum three seconds even if the screen is locked and the app closed.
No that is not possible in iOS. You cannot make changes outside of your app.
One suggestion i can give you is to make a extension for today view in notification center. And you can ask the users to touch the button in notification center to invoke your functionality.
Notification center can be accessed in lock screen also.
I develop an iOS Keyboard extension, and I'm using scroll gestures on keyboard. Sometimes when using the keyboard I scroll up the control center and my keyboard stops working fine. Is there any way to detect if control center become visible, or invisible?
You can't do it directly. The most you can know is that your app was deactivated and then activated again. It could be because of the control center, it could be because of the notification center, it could be because a phone call came in, it could be because the user went into the app switcher and came back again...
Here is the possible work around you can try:
It is the UIWindow subclass to enable behavior like adaptive round-corners & detecting when Control Center is opened. This UIWindow subclass does probably the thing you want. You simply subscribe to an NSNotification and can react to the user opening Control Center. Detailed instructions and setup on Github
https://github.com/aaronabentheuer/AAWindow
[AAWindow: The way this is accomplished is by using a combination of NSTimer and overwriting sendEvent in UIWindow to receive all touches without blocking them. So you basically receive all touches check if they are near the lower edge of the screen, if yes set a timer for a half a second and if during this timer is running applicationWillResignActive is called you can be almost certain that ControlCenter is opened. The time has to vary if there's no statusbar, because then the app is in fullscreen and it can take the user up to 3 seconds to launch Control Center.]
Hope it would help you figure out the exact solution to your problem.
I want to have some information drop down from the top of a view, stay on the screen for a second or two, and then go back up out of the view. I have search for displaying notifications and/or banners. All I get is either push notifications (which I don't need to use) or iAds banners.
I'm working on a barcode scanning app and I want to briefly show the value of the barcode shown without requiring the user to tap on anything. How can I accomplish this?
Don't use notifications and banners, because that might not work: the user can turn them off. In any case this is not a notification of anything, so it's a misuse of notifications.
Just do what you described, yourself: animate a view onto the screen, and then (in the animation's completion handler) use delayed performance to animate the view right back off the screen after a short delay.
You should use a view which manages its own state (INCOMING, STAY PUT, OUTGOING). This way you can reduce the memory footprint and many other bugs in the process. I coded something for a similar process. Check it out
During an active VOIP call, my app is put into the background when an incoming cellular call is received and answered. If, while on the cellular call, I bring my app back to the foreground the app view appears but is unresponsive. The "Touch to return to call" banner appears at the top of the view in green but the app view appears as if there is a darker transparent window overlaid on top of it preventing the view from receiving input. If I put my app into the background, bring another app to the foreground and then bring my app back to the foreground everything works as expected so the problem seems to be specific to active cell calls and/or the green banner only? In Settings->Notifications->Phone I tried turning Notification Center OFF and Alert Style NONE in the hopes of removing the banner to see if the problem still exists but these settings do not effect that banner. In addtion to the App window appearing to have a transparent window overlaid on it, if I touch the window I'm able to drag the entire app window (or view) in all directions (up down side to side) and it has a bounce effect (like tableview vertical scroll) when I release it.
If I dont know the problem I cannot fix it (:
Thanks..
Are you sure there's no view being added on top your view which might be intercepting all your events? My second guess would've been that your app received a memory warning and unloaded a bunch of views. However, that's not very likely since you still see all the views.
I don't know what you really mean to "bring your app back to the foreground",but I can tell you for sure that you cannot call in the same thread the UI and the incoming call, so for situations like this when you want to render some view during a call you can try something like this:
public void InvokeGUIThread(Action action)
{
Dispatcher.Invoke(action);
}
For example if you want to set a text in a textblock do something like this:
InvokeGUIThread(() =>
{
textBlockSome.Text = e.Item.ToString();
});