Max number of push notification that is shown in lock screen iOS9 - ios

On the iOS9, I noted that all of the notifications are not being seen on the lock-screen. It seems like after a large amount of notifications the lock screen preview will only show some of them. Does anyone know that is there a limit on the max number of notifications shown in lock screen per app, since I am not seeing all of them in the lock screen?

You can see maximum 10 recent notification on the lock screen. You can change the setting for a particular application. By going to iOS Settings-> Notification-> Select any application-> Show in notification center.

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How to achieve apple achievement badge screen in iOS

I need to develop a feature in my application which shows one badge icon like the one apple watch application shows where we can rotate the badge. Can anyone suggest me how to achieve this?

iOS - Show View when phone is locked

I'm building an ios app with an alarm feature. I would like to show a view when phone is locked. I want to look exactly like on iOS alarm. If you're an iPhone user try to alarm and locked your phone you will get what i'm talking about. Is it possible? If possible how?
Thanks in advance.
iOS doesn't provide apps that kind of access to the lock screen (or any screen not in your app), so it's impossible to make it exactly like the iOS native alarm. The closest you can get is sending notifications to simulate an alarm, which are visible on the lock screen

iOS push notification brings back old notifications to the lock screen

I use Parse to send push notifications to iOS devices. This works fine. But SOMETIMES (Here is the question mark) there is a weird behavior:
Send push notification to a device... I swipe/tap it on the device and everything is ok. It is no longer visible on the lock screen, but on the notification center (Pull down menu). Alright!
Send another push notification to this device while iPhone screen is off... Notification appears, but also the old notification appears again (Even when it is one day old) and both sounds are being played almost simultaneously.
An Parse employee answered this question:
It's rare, but can happen when an app sends a lot of similar
notifications to the same device. It's a known problem on our side,
it's on our plate to get fixed.
See here: https://groups.google.com/forum/?utm_medium=email&utm_source=footer#!topic/parse-developers/Zo3xBRLWttc

How to put an icon on the iPhone lock screen?

I am not certain what OS made this capability available but I noticed that on my iPhone 5 (which is running the beta iOS8), when the phone is locked a "W" icon was appearing at the bottom-left. It shows "Slide to Unlock", the camera icon on the right, the "bar" that lets me access the control center in the middle - and a "W" on the left. Sliding this "W" up launches the Walgreen's iPhone app. I do not think this is a normal UINotification, nothing in Passbook, and when I go into the Notification Center settings, turning all notifications off for the Walgreen app, the icon still shows.
Is this a notification? Is this a plist parameter? Bug?
Thanks.
This is a new ios 8 feature that displays an app (purchased or not) that is relevant to your location. You must have been near a Walgreens at the time. As far as I know, there is no way to choose that app or submit an app for that. Apple decides what displays there.
You can turn this off by going to settings > General > Handoff and Suggested Apps. Then turn off Installed Apps. According to the description, these Apps are suggested based on usage and location.

iOS 7 notification bright up the screen but randomly show up

I send push notification on iOS devices, but when the screen is locked, it just get brighter, but doesn't show always the push notification
I cannot figure out the pattern
Push notification is OK, and shows sometimes on one device, but not on the others (the other devices bright up the screen)
Setting are OK, different 4 iOS iPad devices
Notifications are correctly delivered to Apple
UPDATE
Note: this random behaviour only seems to happen when the Badge number is 0 and send as 0 (doesn't happen when badge number is not part of the push, or > 0)
Is this expected behaviour?

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