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修正UIBarButtonItem字體大小、顏色等相關屬性

在IOS中假如想修正UIBarButtonItem外面的內容有很多種辦法,罕見的就是自定義contentView 但是有時分由於懶不想自定義只想在原來的文字上停止修正 假如只是修正UIBarButtonItem的文字顏色挺復雜,一行代碼搞定:

 [self.navigationItem.rightBarButtonItem setTintColor:[UIColor whiteColor]];

但假如想修正文字的尺寸 暗影等其他復雜效果是就找不到直接的修正辦法了 但可以經過上面的辦法做到:

[self.navigationItem.rightBarButtonItem setTitleTextAttributes:[NSDictionary dictionaryWithObjectsAndKeys:[UIFont boldSystemFontOfSize:14],NSFontAttributeName, nil] forState:UIControlStateNormal];

其中需求留意的是鍵值對的設置: [屬性值1,屬性名1,屬性值2,屬性名2,….nil]

[UIFont boldSystemFontOfSize:14],NSFontAttributeName, nil]

以上辦法就可以設置更多的顯示效果了

PS IOS修正文字相關屬性鍵值對中的key名:

// Predefined character attributes for text. If the key is not in the dictionary, then use the default values as described below. UIKIT_EXTERN NSString * const NSFontAttributeName NS_AVAILABLE(10_0, 6_0); // UIFont, default Helvetica(Neue) 12 UIKIT_EXTERN NSString * const NSParagraphStyleAttributeName NS_AVAILABLE(10_0, 6_0); // NSParagraphStyle, default defaultParagraphStyle UIKIT_EXTERN NSString * const NSForegroundColorAttributeName NS_AVAILABLE(10_0, 6_0); // UIColor, default blackColor UIKIT_EXTERN NSString * const NSBackgroundColorAttributeName NS_AVAILABLE(10_0, 6_0); // UIColor, default nil: no background UIKIT_EXTERN NSString * const NSLigatureAttributeName NS_AVAILABLE(10_0, 6_0); // NSNumber containing integer, default 1: default ligatures, 0: no ligatures UIKIT_EXTERN NSString * const NSKernAttributeName NS_AVAILABLE(10_0, 6_0); // NSNumber containing floating point value, in points; amount to modify default kerning. 0 means kerning is disabled. UIKIT_EXTERN NSString * const NSStrikethroughStyleAttributeName NS_AVAILABLE(10_0, 6_0); // NSNumber containing integer, default 0: no strikethrough UIKIT_EXTERN NSString * const NSUnderlineStyleAttributeName NS_AVAILABLE(10_0, 6_0); // NSNumber containing integer, default 0: no underline UIKIT_EXTERN NSString * const NSStrokeColorAttributeName NS_AVAILABLE(10_0, 6_0); // UIColor, default nil: same as foreground color UIKIT_EXTERN NSString * const NSStrokeWidthAttributeName NS_AVAILABLE(10_0, 6_0); // NSNumber containing floating point value, in percent of font point size, default 0: no stroke; positive for stroke alone, negative for stroke and fill (a typical value for outlined text would be 3.0) UIKIT_EXTERN NSString * const NSShadowAttributeName NS_AVAILABLE(10_0, 6_0); // NSShadow, default nil: no shadow UIKIT_EXTERN NSString *const NSTextEffectAttributeName NS_AVAILABLE(10_10, 7_0); // NSString, default nil: no text effect UIKIT_EXTERN NSString * const NSAttachmentAttributeName NS_AVAILABLE(10_0, 7_0); // NSTextAttachment, default nil UIKIT_EXTERN NSString * const NSLinkAttributeName NS_AVAILABLE(10_0, 7_0); // NSURL (preferred) or NSString UIKIT_EXTERN NSString * const NSBaselineOffsetAttributeName NS_AVAILABLE(10_0, 7_0); // NSNumber containing floating point value, in points; offset from baseline, default 0 UIKIT_EXTERN NSString * const NSUnderlineColorAttributeName NS_AVAILABLE(10_0, 7_0); // UIColor, default nil: same as foreground color UIKIT_EXTERN NSString * const NSStrikethroughColorAttributeName NS_AVAILABLE(10_0, 7_0); // UIColor, default nil: same as foreground color UIKIT_EXTERN NSString * const NSObliquenessAttributeName NS_AVAILABLE(10_0, 7_0); // NSNumber containing floating point value; skew to be applied to glyphs, default 0: no skew UIKIT_EXTERN NSString * const NSExpansionAttributeName NS_AVAILABLE(10_0, 7_0); // NSNumber containing floating point value; log of expansion factor to be applied to glyphs, default 0: no expansion UIKIT_EXTERN NSString * const NSWritingDirectionAttributeName NS_AVAILABLE(10_6, 7_0); // NSArray of NSNumbers representing the nested levels of writing direction overrides as defined by Unicode LRE, RLE, LRO, and RLO characters. The control characters can be obtained by masking NSWritingDirection and NSTextWritingDirection values. LRE: NSWritingDirectionLeftToRight|NSWritingDirectionEmbedding, RLE: NSWritingDirectionRightToLeft|NSWritingDirectionEmbedding, LRO: NSWritingDirectionLeftToRight|NSWritingDirectionOverride, RLO: NSWritingDirectionRightToLeft|NSWritingDirectionOverride, UIKIT_EXTERN NSString * const NSVerticalGlyphFormAttributeName NS_AVAILABLE(10_7, 6_0); // An NSNumber containing an integer value. 0 means horizontal text. 1 indicates vertical text. If not specified, it could follow higher-level vertical orientation settings. Currently on IOS, it's always horizontal. The behavior for any other value is undefined.

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