Thursday, May 21, 2015

Making a round lable

//width and height are twice of  layer.cornerRadius

label.frame = CGRectMake(0, 0, 100, 100); = CGPointMake(160, 240);
label.alpha = 0.0;
  label.layer.cornerRadius = 50;
  label.clipsToBounds = YES;

Tuesday, April 7, 2015

Composite pattern

A design pattern that solves this kind of structural problem is
called the Composite patternWith the Composite pattern,  we can compose our strokes and dots into a tree structure
so that we can treat each of the nodes uniformly.

Friday, April 3, 2015

Observation Pattern in Objective-C

There are three steps to using key-value observation:

Send the addObserver:forKeyPath:options:context: message
to each object that is being observed.

Override the method observeValueForKeyPath:ofObject:chan
ge:content: in the class definition of the object that is doing the

Override the dealloc method and remove the observer reference

in the class definition of the object that is observing.

Thursday, February 12, 2015

The following are some high-level, conceptual questions to develop of Axure

• How is information organized and accessed on each screen in the case of Information Architecture?
• Where and how are key task flows initiated and ended?
• What are the main navigation systems?
• What common elements are shared across screens?
• How are common elements affected by a device size?