UIButton小结

青旅半醒 2022-06-07 14:19 229阅读 0赞

1.创建  
\+ buttonWithType: // 创建并返回一个特定风格的按钮  
  
2.设置标题  
 buttonType property  
 titleLabel property // 显示按钮当前标题的视图(只读).虽然它是只读的,但是它的属性是可读写的.它的属性在按钮还没有显示之前就有返回值.系统按钮这些值为nil  
 reversesTitleShadowWhenHighlighted property // 确定按钮高亮时是否改变阴影的Bool值.默认时NO,当为YES时,阴影在雕刻与浮雕感之间变化(差不多就是去正常offset的相反数作为新的offset)  
– setTitle:forState: // 设置不同状态的标题,不同状态默认的标题是UIControlStateNormal时的值.若normal状态的值没有设定,默认是个系统值,所以你只要要设置normal状态  
– setTitleColor:forState: // 设置不同状态时的标题颜色.不同状态默认的标题颜色是UIControlStateNormal时的值.若normal状态的值没有设定,默认是个系统值,所以你只要要设置normal状态  
– setTitleShadowColor:forState: // 设置不同状态时的标题阴影颜色.不同状态默认的标题阴影颜色是UIControlStateNormal时的值.若normal状态的值没有设定,默认是个系统值,所以你只要要设置normal状态  
– titleColorForState: // 返回不同状态时标题颜色.  
– titleForState: // 返回不同状态时的标题  
– titleShadowColorForState: // 返回不同状态时的标题阴影颜色  
 font property Deprecated in iOS 3.0  
 lineBreakMode property Deprecated in iOS 3.0  
 titleShadowOffset property Deprecated in iOS 3.0  
  
3.设置按钮图片  
 adjustsImageWhenHighlighted property // 确定当按钮高亮时图片是否改变的BOOL值,为真时图片随按钮高亮而高亮  
 adjustsImageWhenDisabled property // 确定当按钮高亮时图片是否改变的BOOL值,为真时图片随按钮失效而变暗  
 showsTouchWhenHighlighted property // 控制当按钮按下时是否闪光的BOOL值.默认NO,YES时按下会有白色光点.图片和按钮事件的不会因闪光改变.  
– backgroundImageForState: // 返回某个按钮状态下使用的背景图片.  
– imageForState: // 返回某个状态下的按钮图片.  
– setBackgroundImage:forState: // 设置特定状态的背景图片,默认都是normal   
– setImage:forState: // 设置特定状态的图片,默认都是normal  
  
4.设置边界距离  
 contentEdgeInsets property // 按钮content内外线边缘绘制区域.content包含按钮图片和标题  
Use this property to resize and reposition the effective drawing rectangle for the button content. The content comprises the button image and button title. You can specify a different value for each of the four insets (top, left, bottom, right). A positive value shrinks, or insets, that edge—moving it closer to the center of the button. A negative value expands, or outsets, that edge. Use the UIEdgeInsetsMake function to construct a value for this property. The default value is UIEdgeInsetsZero.  
  
 titleEdgeInsets property // 按钮标题绘制区域控制.  
Use this property to resize and reposition the effective drawing rectangle for the button title. You can specify a different value for each of the four insets (top, left, bottom, right). A positive value shrinks, or insets, that edge—moving it closer to the center of the button. A negative value expands, or outsets, that edge. Use the UIEdgeInsetsMake function to construct a value for this property. The default value is UIEdgeInsetsZero.  
 imageEdgeInsets property // 图片绘制偏移区域控制.  
Use this property to resize and reposition the effective drawing rectangle for the button image. You can specify a different value for each of the four insets (top, left, bottom, right). A positive value shrinks, or insets, that edge—moving it closer to the center of the button. A negative value expands, or outsets, that edge. Use the UIEdgeInsetsMake function to construct a value for this property. The default value is UIEdgeInsetsZero.  
  
5.得到当前状态  
 currentTitle property // 当前按钮上显示的标题(只读),当按钮状态改变时值自动改变.值可以为nil.  
 currentTitleColor property // 当前标题颜色(只读).此值要保证不为nil,默认是白色.  
 currentTitleShadowColor property // 标题的阴影颜色(只读).默认是白色.  
 currentImage property // 当前按钮上的图片(只读).可以是nil.  
 currentBackgroundImage property // 当前按钮背景图片(只读).可以是nil.  
 imageView property // 按钮上的图片视图(只读).虽然它是只读的,但是他的属性是可读写的.imageView的属性在按钮还没有显示前就有值了.系统按钮这些值是nil  
  
6.得到尺寸  
– backgroundRectForBounds: // 返回背景绘制区域.  
– contentRectForBounds: // 返回内容绘制区域.内容区域是显示图片和标题及他们特定对齐缩放等的范围.  
– titleRectForContentRect: // 返回标题的绘制区域.  
– imageRectForContentRect: // 返回图片的绘制区域.  
  
  
  
7.其他  
按钮种类  
typedef enum \{   
 UIButtonTypeCustom = 0, // 没有风格  
 UIButtonTypeRoundedRect, // 圆角风格按钮  
 UIButtonTypeDetailDisclosure, //   
 UIButtonTypeInfoLight, // 明亮背景的信息按钮  
 UIButtonTypeInfoDark, // 黑暗背景的信息按钮  
 UIButtonTypeContactAdd, //  
\} UIButtonType;  
  
按钮状态:  
  
UIControlEventTouchDown // 按下   
UIControlEventTouchDownRepeat // 多次按下   
UIControlEventTouchDragInside // 保持按下然后在按钮及其一定的外围拖动  
UIControlEventTouchDragOutside // 保持按下,在按钮外面拖动  
UIControlEventTouchDragEnter // DragOutside进入DragInside触发  
UIControlEventTouchDragExit // in到out触发  
UIControlEventTouchUpInside // 在按钮及其一定外围内松开  
UIControlEventTouchUpOutside // 按钮外面松开  
UIControlEventTouchCancel // 点击取消

CocoaChina 社区原帖：[http://www.cocoachina.com/bbs/read.php?tid=105736][http_www.cocoachina.com_bbs_read.php_tid_105736]

[http_www.cocoachina.com_bbs_read.php_tid_105736]: http://www.cocoachina.com/bbs/read.php?tid=105736