Question

I need to implement the gauge in iOS:

Can anyone provide me some idea about how to do this?

I’ve referred MeterView for iOS but have no idea about how to customize it.

Answer 1

That looks like they are using 3 views. A background view, the needle view and a foreground semi-transparent gloss view.

The background and gloss views are static regular UIImageViews. The needle is a UIImageView with a affine rotation transformation applied to it.

Assuming your needle UIImage view is called needle:

UIImageView *needle = ...;

float theAngle = ...; //How much to rotate, note that this is in radians not degrees

needle.transform = CGAffineTransformMakeRotation(theAngle); // This rotates your needle UIImageView