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  • 学习IOS开发UI篇--UI知识点总结(二) UILabel/UIImageView

      UILabel:常用属性

    @property(nonatomic,copy)   NSString           *text;            // default is nil

    @property(nonatomic,retain) UIFont             *font;            // default is nil (system font 17 plain)

    @property(nonatomic,retain) UIColor            *textColor;

    @property(nonatomic)        NSTextAlignment    textAlignment;   // default is NSTextAlignmentLeft

    @property(nonatomic,getter=isUserInteractionEnabled) BOOL userInteractionEnabled;  // default is NO

    @property(nonatomic,getter=isEnabled)                BOOL enabled;                 // default is YES. changes how the label is drawn

    @property(nonatomic) NSInteger numberOfLines; (设置为0不限制行数)

      设置宽高,自动换行,NSString类的对象方法,配合使用

    - (CGRect)boundingRectWithSize:(CGSize)size options:(NSStringDrawingOptions)options attributes:(NSDictionary *)attributes context:(NSStringDrawingContext *)context NS_AVAILABLE_IOS(7_0);

    options 设置为NSStringDrawingUsesLineFragmentOrigin

    attributes 设置为 @{NSFontAttributeName :[UIFont systemFontOfSize:15]}

    context 设置为nil;

      UIImageView:常用属性,注意动画效果

    @property(nonatomic,copy) NSArray *animationImages;            // The array must contain UIImages. Setting hides the single image. default is nil

    @property(nonatomic,copy) NSArray *highlightedAnimationImages NS_AVAILABLE_IOS(3_0);            // The array must contain UIImages. Setting hides the single image. default is nil

    @property(nonatomic) NSTimeInterval animationDuration;         // for one cycle of images. default is number of images * 1/30th of a second (i.e. 30 fps)

    @property(nonatomic) NSInteger      animationRepeatCount;      // 0 means infinite (default is 0)

      动画完成后清空数组

    - (void)performSelector:(SEL)aSelector withObject:(id)anArgument afterDelay:(NSTimeInterval)delay;

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  • 原文地址:https://www.cnblogs.com/zhaoyan/p/3763283.html
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