Look in this guide In short, use this function, it makes cropped image from uncropped image and cropping mask. CGImageRef CGImageCreateWithMask ( CGImageRef image, CGImageRef mask ); 2 solved Scissor Function in iphone App [closed]
From the NSMutableArray Class Reference on index: The index in the array at which to insert anObject. This value must not be greater than the count of elements in the array. Important: Raises an NSRangeException if index is greater than the number of elements in the array. So, in your first example, you’ll get a … Read more
You better reconstruct it like: if ([startLocationAddress rangeOfString:@”Australia”].location == NSNotFound) { //codes.. } else { NSLog(@”startLocationAddress contain Australia”); } if ([endLocationAddress rangeOfString:@”Australia”].location == NSNotFound) { //codes.. } else { NSLog(@”endLocationAddress contain Australia”); } and review how if–else if–else statement works.. See: @ Hanky 웃 Panky answer for that, since confusion is very prone to us.. … Read more
In the comments, you shared a link to a video: http://youtube.com/watch?v=PBpRZWmPyKo. That app is not doing anything particularly sophisticated with the camera, but rather appears to be calculate distances using basic trigonometry, and it accomplishes this by constraining the business problem in several critical ways: First, the app requires the user to specify the height … Read more
I don’t know I understand exactly what you want to do but from your example you mast want to remove last come. If there is always closing bracket ‘]’ at the end you can use; str = [str stringByReplacingOccurrencesOfString:@” ,]” withString:@”]”]; Hope this is what you are after. solved Remove a character once
The method can look like this: – (IBAction)button_increase_click:(id)sender { int number = [self.label_content.text intValue]; number++; self.label_content.text = [NSString stringWithFormat:@”%04d”, number]; } Update For increasing readability use camel case for ivar method and other names. It’s standard for iOS. – (IBAction)increaseValue:(id)sender { int number = [self.contentLabel.text intValue]; number++; self.contentLabel.text = [NSString stringWithFormat:@”%04d”, number]; } 0 solved … Read more
For this you need to import Quartz framework. You can also set Bordercolor, shadow color, corner width, etc to that view. #import <QuartzCore/QuartzCore.h> And try this code. [self.YourView.layer setCornerRadius:1.0]; [self.YourView.layer setBorderColor:[[[UIColor grayColor] colorWithAlphaComponent:0.5] CGColor]]; [self.YourView.layer setBorderWidth:1.0]; [self.YourView.layer setShadowColor:[UIColor lightGrayColor].CGColor]; 2 solved How to make Custom UIview which have rounded cornes, in iphone? [closed]
Instead of objectAtIndex, you can just addObject: According to the developer notes: addObject: Inserts a given object at the end of the array. – (void)addObject:(id)anObject solved Adding an element to the end of an NSMutableArray [closed]
Despite my comment above, I wondered about the “time and space complexity”. It turned out to be trivial; this only takes 3 long integer variables and a single loop over each input digit (which can be incremented by this algorithm to use 1 more digit; and this will not cause an integer overflow). Starting from … Read more
The following returns a CGRect holding the size of your device’s screen in points. [[UIScreen mainScreen] bounds]; Note that the following would return the size of your screen without the status bar. Try to think of this as the frame rectangle for your application’s window. [[UIScreen mainScreen] applicationFrame]; 2 solved How can I detect a … Read more
According to the output dict is not a dictionary ({}), it’s an array (()) containing one empty dictionary. To check if there is a dictionary in the array which is not empty you could use (I renamed dict to array) if (array.count > 0 && array[0].count > 0) { // will be evaluated to true … Read more
One of the many solutions, given the fuzziness of the question, is to use Core Animation. The official Apple documentation is here. Let’s outline three steps: Conceptual step Define what layers (conceptually) or masks you will use, and create the images that will be imported in them Definition step Define your CABasicAnimation and program the … Read more
Declare your method in your Interface @interface AVView : UIView – (UIView *) buildBestView; @end Use that in the other class AVView *avView = [[AVView alloc] initWithFrame:CGRectMake:(0,0, 100, 100)]; [avView buildBestView]; 3 solved Creating a subclass of UIView [closed]
An example to pass data in your case is this : – (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender { if ([segue.identifier isEqualToString:@”segueName”]) { SecondClassName *destTableViewController = [[segue.destinationViewController viewControllers] objectAtIndex: 0]; destTableViewController.yourDataInSecondClass=yourDataInFirstClass; }} Care: You must give a name to the segue that connects the First VC with the Navigation Controller and change the segueName in the code above … Read more
.. NSArray *allScores = [[NSArray alloc] initWithObjects:[NSNumber numberWithInt:12], [NSNumber numberWithInt:43], [NSNumber numberWithInt:5],nil]; int myScore = 44; int myPosition = [self myPositionForScore:myScore inAllScores:allScores]; NSLog(@”myPosition: %i”, myPosition); .. – (int)myPositionForScore:(int)myScore inAllScores:(NSArray *)allScores { NSArray *sortedScores = [allScores sortedArrayUsingSelector:@selector(compare:)]; for (int position = 0; position < [sortedScores count]; position++) { if (myScore <= [[sortedScores objectAtIndex:position] intValue]) { return … Read more