objective-c Archives - Page 3 of 28

Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. We don’t allow questions seeking recommendations for books, ...

June 1, 2022
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ios, Programming

IT Nursery

Get to UIViewController from UIView?

Is there a built-in way to get from a UIView to its UIViewController? I know you can get from UIViewController to its UIView ...

June 1, 2022
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ios, Programming

IT Nursery

How can I click a button behind a transparent UIView?

Let’s say we have a view controller with one sub view. the subview takes up the center of the screen with 100 px ...

June 1, 2022
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iphone, Programming

IT Nursery

@try – catch block in Objective-C

Why doesn’t @try block work? It crashed the app, but it was supposed to be caught by the @try block. NSString* test = ...

June 1, 2022
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ios, Programming

IT Nursery

How do I URL encode a string

I have a URL string (NSString) with spaces and & characters. How do I url encode the entire string (including the & ampersand ...

June 1, 2022
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objective-c, Programming

IT Nursery

Best way to remove from NSMutableArray while iterating?

In Cocoa, if I want to loop through an NSMutableArray and remove multiple objects that fit a certain criteria, what’s the best way ...

June 1, 2022
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ios, Programming

IT Nursery

Is there any way to check if iOS app is in background?

I want to check if the app is running in the background. In: locationManagerDidUpdateLocation { if(app is runing in background){ do this } ...

June 1, 2022
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C, Programming

IT Nursery

Objective-C : BOOL vs bool

I saw the “new type” BOOL (YES, NO). I read that this type is almost like a char. For testing I did : ...

June 1, 2022
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