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I want to run a code every ten minutes for ever. I used a NSTimer but when the app is in Background or Terminate the timer stops. I developed a game
Just store time, when app is terminated(or send background). When user open your app in next time, load this time. Check with current time and make changes in points.
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I need to create own screen time app in that I should be able to track which app is being used for how much time in mins/hours is that possible for us?
Thank you in advanced!
It is available only for the operating system. You cannot observe the screen time of the other applications except yours for security reasons.
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my application consuming more battery, it is using more battery in one hour it using around 30%.
how to handle it.
I don't have any idea about it.
Thanks,
You can do things like:
1. Turn location services on only when they are needed.
2. You can reduce the location Accuracy.
Refer this Apple Documentation
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I'm writing a game where the user can have N lives, where each life is replenished after a set period of time, T.
What is the best way to implement this in iOS, given that the user may or may not have the app opened when a life replenishes.
I was thinking that I could fire a UILocalNotification, but is it guaranteed that this will always be fired (e.g. what if the phone was turned off)?
You don't want to use a notification for this as it is presented to the user. Instead, while the app is open you should be running a timer and replenishing when it fires. You should also be storing the replenish date, perhaps in user defaults or the keychain, so that if the app is closed you can compare that date to now when it is opened again and determine how many to replenish.
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I'm using Objective-C for iPhone development and I'm wondering how to create a method that checks something (maybe make a GET request to some API every hour) even when the app closed.
Is there any built-in mechanism that can do that?
"Run always?" What does that mean? If you have a "while (true) block in your program it will lock up and the system will kill it for being frozen.
iOS devices are event driven, and need processor time to respond to user actions and system events.
Probably your best bet is a repeating timer on a fairly short interval. I would advise against making the interval much shorter than 50 times a second though, since timers aren't accurate at intervals shorter than that.
What is the problem you're trying to solve?
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I might have a new app ready in a couple of days so I'm not sure if I should use the slot available right now to update my old app. I want to get the new app in the store asap.
How long does it take usually for small updates like graphic changes or just simply changing the name of your app?
All updates, small or large will go thru the same review process. An update to an app can take anywhere between 3 to 6 days. But I've had an update that took 4 weeks. you just never know.
If you go to the App Store Approval Process page you will see that 99% of all updatw will be revied within 5 days.
Normally a simple update takes 2-3 days..but not sure may take upto 10-15 days.