canvas

Put on a background the image of good quality (city map), it is important to me. But with an increase in the application, it turned out that the quality is spoiled, and the pixels appear blurred. What to do?

--

1) If you used a jpg map image, try using a png image instead.   Png images behave better when magnified or reduced in scale.

2)  If the background map image is large (perhaps 2000 x 2000 pixels) and you place it in a Canvas that may be 320 x 480 pixels, does that make much sense?  AI2 can reduce images in size, however the algorithm may blur when the reduction or magnification are large.

This article might help 

⦁ Using Images with App Inventor

Wonderful you have a quality map image, but you may need to reduce it in size to get the background image on your device to be sharp.

--