How do I add 1 day to an NSDate?
Basically, as the title says. I’m wondering how I could add 1 day to an NSDate. So if it were: 21st February 2011 … Read more
objective-c
Get the current first responder without using a private API
I submitted my app a little over a week ago and got the dreaded rejection email today. It tells me that my app … Read more
Best way to define private methods for a class in Objective-C
I just started programming Objective-C and, having a background in Java, wonder how people writing Objective-C programs deal with private methods. I understand … Read more
How can I reverse a NSArray in Objective-C?
I need to reverse my NSArray. As an example: [1,2,3,4,5] must become: [5,4,3,2,1] What is the best way to achieve this? 18 Answers … Read more
“sending ‘const NSString *’ to parameter of type ‘NSString *’ discards qualifiers” warning
I have Constants NSString, that I want to call like: [newString isEqualToString:CONSTANT_STRING]; Any wrong code here? I got this warning: sending ‘const NSString … Read more
How to write iOS app purely in C
I read here Learn C Before Objective-C? Usually I then replace some Obj-C code with pure C code (after all you can mix … Read more
How to sort a NSArray alphabetically?
How can I sort an array filled with [UIFont familyNames] into alphabetical order? 7 Answers 7
Easy way to dismiss keyboard?
I have quite a few controls scattered throughout many table cells in my table, and I was wondering if there’s an easier way … Read more
How do I convert NSMutableArray to NSArray?
How do I convert NSMutableArray to NSArray in objective-c? 9 Answers 9
Assign a variable inside a Block to a variable outside a Block
I’m getting an error Variable is not assignable (missing __block type specifier) on the line aPerson = participant;. How can I make sure … Read more