How to make Shadow effect for View or Button.. etc on 4 sides iOS objective c...

How to make Shadow effect for View or Button.. etc on 4 sides iOS objective c...

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Take UIView or Button... etc and make a Shadow effect as shown use the following code:

Set masks bounds to NO to display shadow visible 

  _viewBg.layer.masksToBounds = NO;

Set shadow Color

_viewBg.layer.shadowColor = [[UIColor colorWithRed:0 green:0 blue:0 alpha:0.25f] CGColor];

Set Shadow radius

_viewBg.layer.shadowRadius = 5.0f; // values depends on View Size

1) Use following to add Shadow top, left of View

_viewBg.layer.shadowOffset = CGSizeMake(-2.0f, -2.0f); // values depends on View Size

2) Use following to add Shadow bottom, right of View

_viewBg.layer.shadowOffset = CGSizeMake(2.0f, 2.0f); // values depends on View Size

3) Use following to add Shadow top, left, bottom, right of View

_viewBg.layer.shadowOffset = CGSizeZero;

4) Set Shadow opacity to full

_viewBg.layer.shadowOpacity = 1.0f;