How to use varargs….

Hi Ever wondered how we give multiple button names in alert view other buttons section…and in many more scenarios.. Ok so how we define a function with varargs.. -(void)getMultipleString:(NSString*)firstString ,… NS_REQUIRES_NIL_TERMINATION; Now the definition -(void)getMultipleString:(NSString*)firstString ,… NS_REQUIRES_NIL_TERMINATION { va_list  t; va_start(t, firstString); id obj; for (obj = firstString; obj != nil; obj = va_arg(t, id)) … Read more

Xcode upgrade: PBXContainerItemProxy missing containerPortal key

the project icon which we see i.e project-name.xcodeproj, is actually a directory, you do this 1. in terminal do cd your project.xcodeproj project.pbxproj 4. scroll down till /* Begin PBXContainerItemProxy section */ 5.there you will see all sections check for the section which is missing a portal key edit it and save it … Read more

iOS6 attributed string usage code snippets

  Fun starts Now   infoString=@”This is an example of Attributed String”; NSMutableAttributedString *attString=[[NSMutableAttributedString alloc] initWithString:infoString]; NSInteger _stringLength=[infoString length]; UIColor *_black=[UIColor blackColor]; UIFont *font=[UIFont fontWithName:@”Helvetica-Bold” size:30.0f]; [attString addAttribute:NSFontAttributeName value:font range:NSMakeRange(0, _stringLength)]; [attString addAttribute:NSForegroundColorAttributeName value:_black range:NSMakeRange(0, _stringLength)]; //——————————————————————————————– UIColor *_red=[UIColor redColor]; UIFont *font=[UIFont fontWithName:@”Helvetica-Bold” size:72.0f]; [attString addAttribute:NSFontAttributeName value:font range:NSMakeRange(0, _stringLength)]; [attString addAttribute:NSStrokeColorAttributeName value:_red range:NSMakeRange(0, _stringLength)]; [attString … Read more

How to change the Alpha Of an image

+ (UIImage *) setImage:(UIImage *)image withAlpha:(CGFloat)alpha{ // Create a pixel buffer in an easy to use format CGImageRef imageRef = [image CGImage]; NSUInteger width = CGImageGetWidth(imageRef); NSUInteger height = CGImageGetHeight(imageRef); CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB(); UInt8 * m_PixelBuf = malloc(sizeof(UInt8) * height * width * 4); NSUInteger bytesPerPixel = 4; NSUInteger bytesPerRow = bytesPerPixel * width; … Read more

Draw Scalable rectangle in xcode..

Hi all one of my juniors had to make a app in which image cropping was required.The part which required drawing a scalable rectangle on screen was bit tough so here is a simple project…use it where ever u want it ..Happy coding (touch the corner of rectangle and drag it to scale the rectangle) dwnload link:-   … Read more


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