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UIView 是视图基类,以下这这类结构图可以看出view 常用UI空间都是这个类的子类
1 view 位置几何 UIViewGeometry
常用的有
frame
bounds
center
transform(默认是CGAffineTransformIdentity。可以做成动画)
multipleTouchEnabled(当前视图是否接受多点触控事件,缺省值为NO)
exclusiveTouch (当前视图是否接受单点触控,默认值是no)
autoresizesSubviews(这个属性是决定当视图大小边界发生改变时,其子视图是否也跟着自动调整大小)
autoresizingMask(简单的调整。默认是UIViewAutoresizingNone)
2: UIView层次结构
superview(父视图)
subviews(子视图)返回时数组
window(窗口)
- (void)removeFromSuperview;(从父视图上移除)
- (void)insertSubview:(UIView *)view atIndex:(NSInteger)index;(插入一个视图在index处)
- (void)exchangeSubviewAtIndex:(NSInteger)index1 withSubviewAtIndex:(NSInteger)index2;(切换两个视图位置)
- (void)addSubview:(UIView *)view;(添加视图)
- (void)insertSubview:(UIView *)view belowSubview:(UIView *)siblingSubview;(添加到哪个视图之上)
- (void)insertSubview:(UIView *)view aboveSubview:(UIView *)siblingSubview;(添加到哪个个视图之下)
- (void)bringSubviewToFront:(UIView *)view;(将子视图至前)
- (void)sendSubviewToBack:(UIView *)view;(将子视图放到后面)
- (void)didAddSubview:(UIView *)subview;()
- (void)willRemoveSubview:(UIView *)subview;(将要移除子视图)
- (nullable __kindof UIView *)viewWithTag:(NSInteger)tag;(根据tag值获取视图)
- (void)setNeedsLayout;(强制布局)
- (void)layoutIfNeeded;
3: UIViewRendering(UIView呈现)
clipsToBounds(是的,内容和子视图省略视图的范围。默认是否定的。)
alpha (透明度,默认值是一)
hidden(是否隐藏视图,默认是不隐藏)
tintColor (色调颜色,开始用于IOS7)
4:UIViewAnimation(视图动画)
+ (void)beginAnimations:(nullable NSString *)animationID context:(nullable void *)context;(UIViewRenderingadditional上下文信息传递给会启动/停止选择器。开始/提交可以嵌套)
+ (void)commitAnimations;开始动画
+ (void)setAnimationDelegate:(nullable id)delegate;(设置代理)
+ (void)setAnimationWillStartSelector:(nullable SEL)selector; // default = NULL. -animationWillStart:(NSString *)animationID context:(void *)context
+ (void)setAnimationDidStopSelector:(nullable SEL)selector; // default = NULL. -animationDidStop:(NSString *)animationID finished:(NSNumber *)finished context:(void *)context
+ (void)setAnimationDuration:(NSTimeInterval)duration; // default = 0.2
+ (void)setAnimationDelay:(NSTimeInterval)delay; // default = 0.0
+ (void)setAnimationStartDate:(NSDate *)startDate;
5:UIViewAnimationWithBlocks(动画块)
常用的方法
1 + (void)animateWithDuration:(NSTimeInterval)duration delay:(NSTimeInterval)delay options:(UIViewAnimationOptions)options animations:(void (^)(void))animations completion:(void (^ __nullable)(BOOL finished))completion NS_AVAILABLE_IOS(4_0);
2 + (void)animateWithDuration:(NSTimeInterval)duration animations:(void (^)(void))animations completion:(void (^ __nullable)(BOOL finished))completion NS_AVAILABLE_IOS(4_0); // delay = 0.0, options = 0
*/
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