iOS – Ensure execution on main thread [duplicate]
This will do it: [[NSOperationQueue mainQueue] addOperationWithBlock:^ { //Your code goes in here NSLog(@”Main Thread Code”); }];
multitasking
Is it possible to opt your iPad app out of multitasking on iOS 9
To opt-out (disable) multi-tasking for your application: Select your Target → General Section → Scroll Down and check Requires full screen It gets applied to the plist’s UIRequiresFullScreen key value. Note: Apps are required to support all screen orientations if it supports multitasking. Otherwise, apps will get the following error on publishing: Invalid Bundle. iPad … Read more
Android singleTask or singleInstance launch mode? [closed]
From the Application Fundamentals page of the Android dev guide: By default, all the activities in an application have an affinity for each other — that is, there’s a preference for them all to belong to the same task. A “singleInstance” activity stands alone as the only activity in its task. If it starts another … Read more
Max number of goroutines
If a goroutine is blocked, there is no cost involved other than: memory usage slower garbage-collection The costs (in terms of memory and average time to actually start executing a goroutine) are: Go 1.6.2 (April 2016) 32-bit x86 CPU (A10-7850K 4GHz) | Number of goroutines: 100000 | Per goroutine: | Memory: 4536.84 bytes | Time: … Read more
Proper use of beginBackgroundTaskWithExpirationHandler
If you want your network transaction to continue in the background, then you’ll need to wrap it in a background task. It’s also very important that you call endBackgroundTask when you’re finished – otherwise the app will be killed after its allotted time has expired. Mine tend look something like this: – (void) doUpdate { … Read more
Handling applicationDidBecomeActive – “How can a view controller respond to the app becoming Active?”
Any class in your application can become an “observer” for different notifications in the application. When you create (or load) your view controller, you’ll want to register it as an observer for the UIApplicationDidBecomeActiveNotification and specify which method that you want to call when that notification gets sent to your application. [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(someMethod:) … Read more
Invalid Bundle Error – “requires launch storyboard”
This is because you need to specify how your app is supposed to handle multitasking on iPad. If you don’t want to handle multitasking right now, you can simply disable it by going to the “General” tab of your target: