Zoom app inventor

MIT App Inventor Help
1

I am making a whiteboard app, how can I make a zoom button in the space of
to drew.
help please

image
image1366×768 51.4 KB

2

The AI2 Canvas does not have a zoom facility.

To zoom, you would have to keep track of what was drawn so you can redraw it.
Alternatively, you could try SVG graphics in a Web Viewer.
(The stock Ai2 emulator’s Web Viewer is too old to handle SVG, unfortunately.)

Here is an SVG sample to try on a more modern emulator or device …
circle pad viewbox webviewer_SVG.aia (3.7 KB)

when button1 click
when button1 click987×636 55.4 KB

(The handy direct url feed technique I got from @TimAI2)