ios – IB_DESIGNABLE,在预览中显示视图?
发布时间:2020-12-14 19:25:33 所属栏目:百科 来源:网络整理
导读:我在界面构建器中显示了我的IB_DESIGNABLE属性集的视图,但是当我使用预览功能查看我的视图在各种设备上的外观时,我只获得超级视图名称,例如UIView的. 不要在预览中显示IB_DESIGNABLE视图吗? 编辑按要求的代码屏幕截图: H=#import UIKit/UIKit.hIB_DESIGNAB
我在界面构建器中显示了我的IB_DESIGNABLE属性集的视图,但是当我使用预览功能查看我的视图在各种设备上的外观时,我只获得超级视图名称,例如UIView的.
不要在预览中显示IB_DESIGNABLE视图吗? 编辑按要求的代码屏幕截图: H = #import <UIKit/UIKit.h> IB_DESIGNABLE @interface TitleBannerView : UILabel @property (nonatomic) IBInspectable CGFloat borderWidth; @property (nonatomic) IBInspectable CGFloat cornerRadius; @property (nonatomic) IBInspectable CGFloat shadowHeight; @end M = @implementation TitleBannerView @synthesize borderWidth; @synthesize cornerRadius; @synthesize shadowHeight; - (void)drawRect:(CGRect)rect { if (self.borderWidth == 0) self.borderWidth = 8.5; if (self.cornerRadius == 0) self.cornerRadius = 33; if (self.shadowHeight == 0) self.shadowHeight = 15.1; CGContextRef context = UIGraphicsGetCurrentContext(); //// Color Declarations UIColor* bG = [UIColor colorWithRed: 0.18 green: 0.8 blue: 0.443 alpha: 1]; UIColor* borderColor = [UIColor colorWithRed: 0.557 green: 0.267 blue: 0.678 alpha: 1]; UIColor* shadowColor2 = [UIColor colorWithRed: 0.976 green: 0.859 blue: 0.718 alpha: 1]; //// Shadow Declarations UIColor* shadow = shadowColor2; CGSize shadowOffset = CGSizeMake(-4.1,self.shadowHeight); CGFloat shadowBlurRadius = 1.5; // //// Frames CGRect frame = self.bounds; //// Subframes CGRect group = CGRectMake(CGRectGetMinX(frame) + 15,CGRectGetMinY(frame) + 15,CGRectGetWidth(frame) - 28,CGRectGetHeight(frame) - 40); //// Abstracted Attributes CGFloat roundedRectangleStrokeWidth = self.borderWidth ; CGFloat roundedRectangleCornerRadius = self.cornerRadius; //// Group { //// Rounded Rectangle Drawing UIBezierPath* roundedRectanglePath = [UIBezierPath bezierPathWithRoundedRect: CGRectMake(CGRectGetMinX(group) + floor(CGRectGetWidth(group) * 0.00060) + 0.5,CGRectGetMinY(group) + floor(CGRectGetHeight(group) * 0.00568) + 0.5,floor(CGRectGetWidth(group) * 0.99940) - floor(CGRectGetWidth(group) * 0.00060),floor(CGRectGetHeight(group) * 0.99432) - floor(CGRectGetHeight(group) * 0.00568)) cornerRadius: roundedRectangleCornerRadius]; CGContextSaveGState(context); CGContextSetShadowWithColor(context,shadowOffset,shadowBlurRadius,shadow.CGColor); [bG setFill]; [roundedRectanglePath fill]; CGContextRestoreGState(context); [borderColor setStroke]; roundedRectanglePath.lineWidth = roundedRectangleStrokeWidth; [roundedRectanglePath stroke]; } } @end TitleBannerView是绿色的视图,带有紫色边框. 解决方法
首先,IBDesignable可以在预览中看到.
您是否在框架中声明了IBDesignable类? IBInspectable ONLY仅支持在框架中声明时的预览. 另外,请记住(不是你的情况): >你的抽奖代码应该足够快,你只有100毫秒的抽奖时间.>经常需要prepareForInterfaceBuilder()方法. (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |