Draw signature and other sketch functions


I am creating an app where the user can sketch with finger Chinese Characters on the phone screen. The most useful function that I have found so far is the “Draw signature” -function. However, when drawing the signature, the drawing area is quite small. Is there a way to adjust the size of the drawing area? Also, is anyone aware of other functionalities that enable drawing on the screen?


did you find something?

Nothing yet. Any ideas?

I thought about change the background color so that at least the user has a base to write from, but I couldn’t find anything about it.