Xcode 6.0.1 / iOS 8 UIAlertController

UIAlertControllerStyleAlert with Buttons

UIAlertController  *alertController = [UIAlertController alertControllerWithTitle:nil message:nil preferredStyle:UIAlertControllerStyleAlert];
   
UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"Cancel"
style:UIAlertActionStyleCancel
handler:^(UIAlertAction *action)
{
NSLog(@"Cancel Action");
        }];
   
UIAlertAction *deleteAction = [UIAlertAction actionWithTitle:@"Delete"
style:UIAlertActionStyleDefault
handler:^(UIAlertAction *action)
{
NSLog(@"Delete Action");
}];

[alertController addAction:cancelAction];
[alertController addAction:deleteAction];

[self presentViewController:alertController animated:YES completion:nil];

iOS set UIImageView to CircleView

- (id)imageViewSetCornerRadius:(UIImageView *)imageView withImage:(UIImage *)image {

    

    imageView.image = image;

    imageView.layer.borderWidth = 3.0f;

    imageView.layer.borderColor = [UIColor whiteColor].CGColor;

    imageView.layer.cornerRadius = imageView.frame.size.width / 2;

    imageView.clipsToBounds = YES;

    

    return imageView;

}

[iOS] Objective-c sharedApplication delegate, global @property

AppDelegate.h

#define appDelegate ((AppDelegate *)[[UIApplication sharedApplication] delegate])

@property (nonatomic, assign)NSInteger globalCount;

How to use?

[iOS] Objective-c save/load image under APP document

Objective-c save/load image under APP document

Save image: 

   [self saveImageInDocumenet:Image withName:@"blue"];

Load image with name: 

   UIImage *image = [self loadImageFromDocumentWithName:@"blue"];

- (void)saveImageInDocumenet:(UIImage *)image withName:(NSString *)name {

    

    if (image != nil) {

        

        NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,

                                                             NSUserDomainMask, YES);

        NSString *documentsDirectory = [paths objectAtIndex:0];

        NSString* path = [documentsDirectory stringByAppendingPathComponent:name];

        NSData* data = UIImagePNGRepresentation(image);

        [data writeToFile:path atomically:YES];

    }

}

[iOS] Objective-c NSString to Hex string

Objective-c NSString to Hex string

NSData *data = [self parseMacAddress:@"AABBCCDDEEFF "];

NSLog(@"After transfer: %@", data); 

= > AABBCCDDEEFF (Hex)