Ios code controls the shadow of controls

You only need to overwrite the corresponding space. I developed the UIButton control.

. H file, as follows:

# Import

# Import

@ Interface ShadowButton: UIButton

{

UIColor * shadowColor;

}

@ Property (nonatomic, strong) UIColor * shadowColor;

@ End

. M file, as shown below

# Import "ShadowButton. h"

@ Implementation ShadowButton

@ Synthesize shadowColor;

-(Void) setProperty

{

Self. imageEdgeInsets = UIEdgeInsetsMake (0,-1, 3, 2 );

Self. shadowColor = [UIColor grayColor];

}

-(Id) initWithFrame :( CGRect) frame

{

Self = [super initWithFrame: frame];

If (self ){

// Initialization code

}

Return self;

}

-(Id) initWithCoder :( NSCoder *) aDecoder

{

Self = [super initWithCoder: aDecoder];

If (self ){

[Self setProperty];

}

Return self;

}

// Only override drawRect: if you perform custom drawing.

// An empty implementation adversely affects performance during animation.

-(Void) drawRect :( CGRect) rect

{

// Drawing code

CGContextRef context = UIGraphicsGetCurrentContext ();

CGRect frame = rect;

UIEdgeInsets insets = self. imageEdgeInsets;

Frame. origin. x + = insets. left;

Frame. origin. y + = insets. top;

Frame. size. width-= (insets. left + insets. right );

Frame. size. height-= (insets. top + insets. bottom );

If (shadowColor ){

CGContextSetShadowWithColor (context, CGSizeMake (insets. right, insets. bottom), 10, [shadowColor CGColor]);

}

UIImage * image = self. imageView. image;

[Image drawInRect: frame];

}

@ End