| 标题 | ios 代码控制出现控件的阴影 |
| 内容 | 只需要把对应的空间，进行重写。我开发的主要针对UIButton这个控件 .h文件，如下： #import #import @interface ShadowButton : UIButton { UIColor *shadowColor; } @property(nonatomic , strong)UIColor *shadowColor; @end .m文件，如下 #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 |
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