UIButton

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UIButton 属性

UIButton属性buttonWithType定义button类型UIButtonTypeCustom = 0 自定义风格
UIButtonTypeRoundedRect 圆角矩形
UIButtonTypeDetailDisclosure 蓝色小箭头，主要做详细说明用
UIButtonTypeInfoLight 亮色感叹号
UIButtonTypeInfoDark 暗色感叹号
UIButtonTypeContactAdd 十字加号frame定义位置
backgroundColor背景色

按钮状态UIControlStateNormal = 0 常规状态
UIControlStateHighlighted = 1 <<0 高亮
UIControlStateDisabled = 1 << 1 禁用状态
UIControlStateSelected = 1 << 2 选中状态
UIControlStateApplication = 0x00FF0000 当应用程序标志时
UIControlStateReserved = 0xFF000000 为内部框架预留adjustsImageWhenHighlighted

showsTouchWhenHighlighted按下会发光

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