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Check for retina display

View retinacheck.m
1 2 3 4 5 6 7 8 9 10
+ (BOOL) isRetinaDisplay
{
int scale = 1.0;
UIScreen *screen = [UIScreen mainScreen];
if([screen respondsToSelector:@selector(scale)])
scale = screen.scale;
if(scale == 2.0f) return YES;
else return NO;
}
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