I'm diving into iOS development and am building my own alarm clock app to become familiar with the platform and SDK. One of the API's I'm currently learning is the Local Notifications API, which I assume is the same API Apple uses to implement their alarms in their Clock app.
What I don't understand is how they implement their "Snooze" functionality. As I understand it, Local Notifications allow you to present to the user an alert box that has at most two buttons when your app isn't running in the foreground, one button for dismissing the alert and one button for taking the user to your app. In Apple's Clock app, however, it appears the user is presented with an alert box with two buttons, one button to dismiss the alarm and one button to "Snooze" and reschedule the alarm without launching the Clock app. My questions are...
When the user clicks the "Snooze" button, how do you think Apple is rescheduling the Local Notification for the alarm without launching the Clock app? Do you think they're using their own private APIs that circumvent the limitations of the Local Notifications that only allow for two options? Or do you think they're launching the Clock app to reschedule the Local Notification, they just don't show the app launching and quitting?
The documentation says the "alertAction" property of the Local Notification is the text to be displayed on the right button of the alert box and the slider bar of the lock screen. In Apple's Clock app, however, the "Snooze" text is the left button in the alert box, nor is it the Slider bar text. Why is this backwards?
Thanks so much in advance for your thoughts!
The local notification API does not have any mechanism to do what you want. The alarm clock app is almost certainly not using any of the infrastructure for local notifications, it predates them. Even if it is factored onto some of the infrastructure provided by local notifications, it is certainly not using the public APIs.
You should file a bug requesting that this functionality be added.
Related
My application is currently set up to display local and push notifications even when in the foreground. There is one specific local notification I would like to disable when in the foreground, but keep enabled when the app is not active or in the background. Is there a way to accomplish this?
When app in foreground iOS will not show notification banner/alert by default on its own, you must have written code or used a third party frameworks to show some banner on App, just put a break point in that code to not to show the specific notification
https://github.com/nhdang103/HDNotificationView
I'm working on app that will manage quite a lot of local notifications. So since I don't want to waste user's battery, I'm wondering - is there any possibility to don't turn on the screen? So the notification still will be fired and the banner will be on the screen but only if user will unlock the phone. It's kind of "minor notification" that are still should be displayed but they're not so important to wake up the phone.
And if there's such possibility - wouldn't it be what Apple calls "bad user experience". You know, kind of confusion that notification didn't wake up the phone's screen?
And yes, sound still should exist, because it should work as reminder.
Thanks in advance.
I need to create a android equivalent functionality in iOS, which records GPS and other sensor readings even when the app is killed, in iOS that would be, when the app is swiped from the app switcher.
In android, the Service class is able to do this. The notification stays there in the notification panel and you cannot swipe it, unless the app allows you to do so..
Many apps add widgets to the notification panel using this functionality like, clean master. Clean master widget floats in the notification panel and does most of the functionality which the app does it self.
IOS does not has any background service concept. Yes, you can use GPS location when user app in background but it will not work when your app is totally close.
I'm working on a project on iOS 7, 8 that use a lot of notifications (Remote, Local). I have some questions about Local Notification.
I'm using Local Notification to schedule an alarm or a count-down. As I know, the use of NSTimer is not really a good choice since it has only up to 10' in background & if the app process is killed it doesn't work anymore. Local Notification is managed by iOS but I have to accept its alert when the app is not in foreground. There's nothing like silent local notification (local notification without alert, sound or badge and app still knows about it although it's in background). Am I right ?
Let's assume that there're some simple local notifications in Notification Center, scheduled by our app. Normally when I touch on a notification to see it in my app, the others remain present until we interact with them. In some cases that I haven't figured out, all other notifications are removed from the Notification Center. Does anyone encounter this & understand why ?
I find the interactive notification feature in iOS very limited. I want to change the title of a defined UIMutableUserNotificationAction button & add an image for it, like I can do with UIButton. So the question is : Is it possible to customize the UI of an action button ?
Thanks for your help !
Unfortunately there is no correspondence in silent notification using local notifications.
The number of the visible notification in the notification center is a user decision, the user in Settings can decide to set a different number or decide to do not show them in notification center as well. As for the first point no. The third point is not clear, you can set the image you want for a remote just put in the payload the right name, local notifications use the app icon.
There is no silent notification for Local Notification. The user has to click to the notification to open your App.
I suppose that the associated application has deleted those notifications programmatically. Else, those notifications must stay in the notification center.
You cannot add image to action buttons but just the titles.
I tried more than two weeks to do the same. I had to show notification after 2 hrs even if the use doesn't click the notification. But the repetition facility is well handled in objective C. I could have created multiple local notification but it will also violates the total number of 64 notifications. Apple needs to improved the same.
How can I detect Home button long press like 4 second or more event in my app which is already running in background? Is it possible to so because app is already running in background and if user long press home button of the device for 4 second or more can i detect the event in my background running app and if possible than will Apple approve this for app store?
No that is not possible. As you should know, a long press on the home button brings up Siri. Your app would interfere with that. Also, I don't believe Apple allows access to the home button event like that.
Lastly; while your app is in the background, it goes into a suspend state after a short while and no events run. The only thing the app can do is receive push notifications - unless you have been given special access to audio / gps functions from Apple themselves.
Short answer : Not possible. not at least with public method and want your app to be on Appstore.
For the Research purpose, you might want to try use private method and do your R&D with it. it might be possible.