for automatic layout and automatic adaptation of annotations, UI matching
Automatic layout auto Layout:auto Layout guide:introduction, if designers understand HTML and CSS will be easy to understand some, I also just understand the fur of HTML, Designers in the design of the interface when the data is best not to write a fixed number of PX, using absolute positioning that's the iP4 before, especially now out of IP6 and plus, if you're using absolute positioning now, designers and engineers will be less efficient, so it's best to use the left side when communicating with engineers. The right number, center, and control in the screen size and position is a few of the notes, auto layout can be based on different equipment size automatically calculate UIView frame, this will be more effective and convenient to fit more sizes.
Xcode6 has begun to support the fdp/svg format vector pictures, and our engineers to communicate that can be directly out of a PDF picture can be, I use PS export PDF to the Xcode test available, by the way, we have no way to bulk export PSD layer to PDF format Chettu, Can only one one cut.
all kinds of fitting layout scheme detailed:
http://blog.csdn.net/phunxm/article/details/42174937