Hi Mark! How are you?

hello, Susheel!

how can I help you today?

I'm fine -- and you?

Good thank you! Please can you give me the use cases for surfaceview? when is it more suitable to use than using a regular view class?

um, AFAIK, it's only necessary when you are handing it over to some external process to populate (MediaPlayer, Camera, etc.) or for OpenGL

but, other than using it for media, I haven't used it much

If I need to display a certain number of images on my android screen and if I want to move them and perform basic operations like scale, etc using touch, is that a good reason to use surfaceview because I've heard that it is more performant...

AFAIK, SurfaceView cannot be more performant for what you describe

in fact, if anything, what little I know about GPU compositing would suggest that it would be less performant

but, again, you're outside my area of expertise

right now I am just re-drawing the views at their new position to do a translate operation for instance...I was wondering why there is a small lag...

that would depend a lot on how you are doing it, in particular how frequently

the chapter on jank in the book describes some tools for trying to identify where the problem lies

jank in the book....hmm

but this is the sort of thing that I tend to rely on other experts to create, where I stick to existing working components

"Finding and Eliminating Jank"

begins on page 3309 in Version 7.3 of the book

just found it...thank you! I will read it...I love your book and the code examples that come with it...were you going to introduce any ndk related stuff in the book?

there is a chapter on the NDK

however, it is somewhat dated

I am waiting for Android Studio's NDK support to stabilize before I try updating it

heaven only knows when that will be

haha...thank you for your help Mark...

Take care

you too!