| 标题 | ios 代码控制出现控件的阴影 |
| 范文 | 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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