UIView 属性

@interface UIView : UIResponder
    
      // YES:能够跟用户进行交互 @property(nonatomic,getter=isUserInteractionEnabled) BOOL userInteractionEnabled; // default is YES // 控件的一个标记(父控件可以通过tag找到对应的子控件) @property(nonatomic) NSInteger tag; // default is 0 // 图层(可以用来设置圆角效果\阴影效果) @property(nonatomic,readonly,retain) CALayer *layer; @end @interface UIView(UIViewGeometry) // 位置和尺寸(以父控件的左上角为坐标原点(0, 0)) @property(nonatomic) CGRect frame; // 位置和尺寸(以自己的左上角为坐标原点(0, 0)) @property(nonatomic) CGRect bounds; // 中点(以父控件的左上角为坐标原点(0, 0)) @property(nonatomic) CGPoint center; // 形变属性(平移\缩放\旋转) @property(nonatomic) CGAffineTransform transform; // default is CGAffineTransformIdentity // YES:支持多点触摸 @property(nonatomic,getter=isMultipleTouchEnabled) BOOL multipleTouchEnabled; // default is NO @end @interface UIView(UIViewHierarchy) // 父控件 @property(nonatomic,readonly) UIView *superview; // 子控件(新添加的控件默认都在subviews数组的后面, 新添加的控件默认都显示在最上面\最顶部) @property(nonatomic,readonly,copy) NSArray *subviews; // 获得当前控件所在的window @property(nonatomic,readonly) UIWindow *window; @interface UIView(UIViewRendering)//底灰 // YES : 超出控件边框范围的内容都剪掉 @property(nonatomic) BOOL clipsToBounds; // 背景色 @property(nonatomic,copy) UIColor *backgroundColor; // default is nil // 透明度(0.0~1.0) @property(nonatomic) CGFloat alpha; // default is 1.0 // YES:不透明 NO:透明 @property(nonatomic,getter=isOpaque) BOOL opaque; // default is YES // YES : 隐藏 NO : 显示 @property(nonatomic,getter=isHidden) BOOL hidden; // 内容模式 @property(nonatomic) UIViewContentMode contentMode; // default is UIViewContentModeScaleToFill @end
    

 

UIView 常用方法

/** *  通过一个frame来初始化一个UI控件 */- (id)initWithFrame:(CGRect)frame;- // 从父控件中移除一个控件- (void)removeFromSuperview;// 添加一个子控件(可以将子控件插入到subviews数组中index这个位置)- (void)insertSubview:(UIView *)view atIndex:(NSInteger)index; // 交换subviews数组中所存放子控件的位置 - (void)exchangeSubviewAtIndex:(NSInteger)index1 withSubviewAtIndex:(NSInteger)index2; // 添加一个子控件(新添加的控件默认都在subviews数组的后面, 新添加的控件默认都显示在最上面\最顶部) - (void)addSubview:(UIView *)view; // 添加一个子控件view(被挡在siblingSubview的下面) - (void)insertSubview:(UIView *)view belowSubview:(UIView *)siblingSubview; // 添加一个子控件view(盖在siblingSubview的上面) - (void)insertSubview:(UIView *)view aboveSubview:(UIView *)siblingSubview; // 将某个子控件拉到最上面(最顶部)来显示 - (void)bringSubviewToFront:(UIView *)view; // 将某个子控件拉到最下面(最底部)来显示 - (void)sendSubviewToBack:(UIView *)view; /**系统自动调用(留给子类去实现)**/ - (void)didAddSubview:(UIView *)subview; - (void)willRemoveSubview:(UIView *)subview; - (void)willMoveToSuperview:(UIView *)newSuperview; - (void)didMoveToSuperview; - (void)willMoveToWindow:(UIWindow *)newWindow; - (void)didMoveToWindow; /**系统自动调用**/ // 是不是view的子控件或者子控件的子控件(是否为view的后代) - (BOOL)isDescendantOfView:(UIView *)view; // returns YES for self. // 通过tag获得对应的子控件(也可以或者子控件的子控件) - (UIView *)viewWithTag:(NSInteger)tag; // recursive search. includes self /**系统自动调用(留给子类去实现)**/ // 控件的frame发生改变的时候就会调用,一般在这里重写布局子控件的位置和尺寸 // 重写了这个写方法后,一定调用[super layoutSubviews]; - (void)layoutSubviews;

UIView 动画block

@interface UIView(UIViewAnimationWithBlocks)+ (void)animateWithDuration:(NSTimeInterval)duration delay:(NSTimeInterval)delay options:(UIViewAnimationOptions)options animations:(void (^)(void))animations completion:(void (^)(BOOL finished))completion; + (void)animateWithDuration:(NSTimeInterval)duration animations:(void (^)(void))animations completion:(void (^)(BOOL finished))completion; + (void)animateWithDuration:(NSTimeInterval)duration animations:(void (^)(void))animations; + (void)animateWithDuration:(NSTimeInterval)duration delay:(NSTimeInterval)delay usingSpringWithDamping:(CGFloat)dampingRatio initialSpringVelocity:(CGFloat)velocity options:(UIViewAnimationOptions)options animations:(void (^)(void))animations completion:(void (^)(BOOL finished))completion; @end