私は多くの患者を受け入れ、要件に従って長方形をグロー効果で作成しました。
CALayer *bevelLayer = [CALayer layer];
[bevelLayer setBounds:CGRectMake(0.0f, 0.0f, 300.0f, 300.0f)];
[bevelLayer setPosition:CGPointMake(300.0f, 550.0f)];
[bevelLayer setBackgroundColor:[[UIColor whiteColor] CGColor]];
[bevelLayer setShadowOpacity:1.0];
[bevelLayer setShadowRadius:7.0f];
[bevelLayer setShadowColor:[[UIColor colorWithRed:0.0f/255.0 green:126.0f/255.0f blue:255.0f/255.0f alpha:1.0f] CGColor]];
[bevelLayer setShadowPath:[[UIBezierPath bezierPathWithRoundedRect:CGRectMake(-10.0f, -10.0f, 310.0f, 310.0f) cornerRadius:5.0f] CGPath]];
[[[self view] layer] addSublayer:bevelLayer];