cocoa-touch - w3toppers.com

Can I embed a custom font in an iPhone application?

How do I sort an NSMutableArray with custom objects in it?

Compare method Either you implement a compare-method for your object: – (NSComparisonResult)compare:(Person *)otherObject { return [self.birthDate compare:otherObject.birthDate]; } NSArray *sortedArray = [drinkDetails sortedArrayUsingSelector:@selector(compare:)]; NSSortDescriptor (better) or usually even better: NSSortDescriptor *sortDescriptor; sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@”birthDate” ascending:YES]; NSArray *sortedArray = [drinkDetails sortedArrayUsingDescriptors:@[sortDescriptor]]; You can easily sort by multiple keys by adding more than one to … Read more

How can I check for an active Internet connection on iOS or macOS?

Xcode – How to fix ‘NSUnknownKeyException’, reason: … this class is not key value coding-compliant for the key X” error?

Setting a button’s target/action and passing a particular string to the action [closed]

You can’t pass arguments when you use @selector. @selector(buttonClicked:WithString:title) // This here is invalid^^ That operator can only be used on a method name; the selector you get from it is later used to call the method, at which point arguments can be passed.

How to get boolean value from switch state?

You can simply call switch.isOn to get the state of the UISwitch, but you should rather create an IBAction for your UISwitch, which will be called every time the state of the Switch changes. You can store the switch state in a computed property if you don’t need to be notified every time the state … Read more

How to convert an NSString to id or UIView objective-c iphone [closed]

Assuming you have myUIView defined as a property, e.g. @property (nonatomic, strong) IBOutlet UIView *myUIView; then you can access it from a string with the -valueForKey: method, as in [self valueForKey:@”myUIView”]

How to "undo" when we draw in iPhone SDK? [closed]

-(void)undoButtonClicked { if([pathArray count]>0){ UIBezierPath *_path=[pathArray lastObject]; [pathArray removeLastObject]; [bufferArray addObject:_path]; [self setNeedsDisplay]; } }