iOS imitation android nine Gongge unlock effect [turn]

The principle is very simple, listen to a series of events in the touch of the view, when the position of the finger to determine the vicinity of a button to determine the button selected, and draw the line.

As follows:

 

You can ninegridunlockview.m method   in the file touchesended:withevent:   Add your own code at the end of the line to decide what to do later. (The current project has not been added to the Commission, the following may be added)

Code Address:

Https://github.com/lcwangchao/NineGridUnlocker