drawInRect: losing Quality of Image resolution

Question

I am trying to erase image using following code

 CGColorRef strokeColor = [UIColor whiteColor].CGColor;

 UIGraphicsBeginImageContext(imgForeground.frame.siz         


        

Answer 1

You should go with UIGraphicsBeginImageContextWithOptions instead of UIGraphicsBeginImageContext, so that a scale factor can be specified.

For example, this will use the scale factor of the device's main screen:

UIGraphicsBeginImageContextWithOptions(imgForeground.frame.size, NO, 0);