iOS ui--Doodle Artboard instance

The first is to build the framework

Other skipped, direct display effect:

Then upload and build two controller framework of the source Baidu cloud download Link: http://pan.baidu.com/s/1skjpDox password: ARDX, the project and I spent a good long time to get the icon material OH.

Then in the canvasview of the custom inheritance UIView:

Then the effect is:

Because of the logic above, each redraw will erase the previous trace. The solution, then, is to store each created path through a strongly referenced mutable array index, and then draw the array to iterate over it, drawing all the paths.

Effect:

Now you need to work with the settings brush property of Patteleviewcontroller, so you need to pass data on two controllers:

iOS ui--Doodle Artboard instance