我试图在这里初始化我的自定义字体，但它显示错误。extensionUIFont{@objcconvenienceinit(myCoderaDecoder:NSCoder){ifletfontDescriptor=aDecoder.decodeObject(forKey:"UIFontDescriptor")as?UIFontDescriptor{ifletfontAttribute=fontDescriptor.fontAttributes["NSCTFontUIUsageAttribute"]as?String{//HERESHOWINGTHEERRORvarfontName=""s
以下代码在iOS7中运行良好，但在iOS8中不返回粗体或斜体字体。它适用于HelveticaNeue，但不适用于Arial字体。UIFontDescriptor*descriptor1=[UIFontDescriptorfontDescriptorWithFontAttributes:@{UIFontDescriptorFamilyAttribute:@"Arial"}];UIFontDescriptor*boldFontDescriptor1=[descriptor1fontDescriptorWithSymbolicTraits:UIFontDescriptorTraitBold]
letbodyFontDescriptor=UIFontDescriptor.preferredFontDescriptor(withTextStyle:UIFontTextStyle.body)letbodyMonospacedFontDescriptor=bodyFontDescriptor.addingAttributes([UIFontDescriptorFeatureSettingsAttribute:[[UIFontFeatureTypeIdentifierKey:kTextSpacingType,UIFontFeatureSelectorIdentifierKey:kMo
letbodyFontDescriptor=UIFontDescriptor.preferredFontDescriptor(withTextStyle:UIFontTextStyle.body)letbodyMonospacedFontDescriptor=bodyFontDescriptor.addingAttributes([UIFontDescriptorFeatureSettingsAttribute:[[UIFontFeatureTypeIdentifierKey:kTextSpacingType,UIFontFeatureSelectorIdentifierKey:kMo
我正在学习Objective-C，并且对枚举类型有一些了解。这是我正在关注的教程中使用的一段示例代码:UIFont*bodyFont=[UIFontpreferredFontForTextStyle:UIFontTextStyleBody];UIFontDescriptor*existingDescriptor=[bodyFontfontDescriptor];UIFontDescriptorSymbolicTraitstraits=existingDescriptor.symbolicTraits;traits|=UIFontDescriptorTraitBold;UIFontDes
我在应用程序中使用动态类型，并且在某些情况下我想更改字体的外观，例如将其设为斜体或取消加粗。添加样式非常简单:UIFontDescriptor*descriptor=[[UIFontDescriptorpreferredFontDescriptorWithTextStyle:UIFontTextStyleHeadline]fontDescriptorWithSymbolicTraits:UIFontDescriptorTraitItalic];UIFont*font=[UIFontfontWithDescriptor:descriptorsize:descriptor.pointSiz
刚刚将我的iPodtouch升级到iOS7.0.3，“HelveticaNeue-Italic”似乎消失了。当我在手机上查询时:[UIFontfontNamesForFamilyName:@"HelveticaNeue"]我得到以下字体名称(13):HelveticaNeue-BoldItalic,HelveticaNeue-Light,HelveticaNeue-UltraLightItalic,HelveticaNeue-CondensedBold,HelveticaNeue-MediumItalic,HelveticaNeue-Thin,HelveticaNeue-Medium,
刚刚将我的iPodtouch升级到iOS7.0.3，“HelveticaNeue-Italic”似乎消失了。当我在手机上查询时:[UIFontfontNamesForFamilyName:@"HelveticaNeue"]我得到以下字体名称(13):HelveticaNeue-BoldItalic,HelveticaNeue-Light,HelveticaNeue-UltraLightItalic,HelveticaNeue-CondensedBold,HelveticaNeue-MediumItalic,HelveticaNeue-Thin,HelveticaNeue-Medium,
