performance - Drawing lags in Android drawing application with canvas -


i building drawing application in android using canvas. i'm directly painting on canvas without using offline bitmap/canvas. works fine on 512m memory device on slower devices, application lags after few strokes. application allows user put cliparts, background , flood fill, too.

for different objects using arraylist bean class store each paint object, style , bitmap.

in ondraw(), each time iterating on arraylist , draw stored in arraylist. providing undo , redo cannot use drawingcache.

in short, need improve overall performance of application. how can achieve that? application structure proper or should change? can post code if needed.

thanks in advance.


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