UIView中UIButton的常用方法

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UIButton

UIButton的定义

　　UIButton *button=[[UIButton buttonWithType:(UIButtonType);

　　能够定义的button类型有以下6种，

　　typedef enum {

　　UIButtonTypeCustom = 0, 自定义风格

　　UIButtonTypeRoundedRect, 圆角矩形

　　UIButtonTypeDetailDisclosure, 蓝色小箭头按钮，主要做详细说明用

　　UIButtonTypeInfoLight, 亮色感叹号

　　UIButtonTypeInfoDark, 暗色感叹号

　　UIButtonTypeContactAdd, 十字加号按钮

　　} UIButtonType;

frame

　　button1.frame = CGRectMake(20, 20, 280, 40);

　　[button setFrame:CGRectMake(20,20,50,50)];

button背景色

　　button1.backgroundColor = [UIColor clearColor];

　　[button setBackgroundColor:[UIColor blueColor]];

state状态

　　forState: 这个参数的作用是定义按钮的文字或图片在何种状态下才会显现

　　enum {

　　UIControlStateNormal = 0, 常规状态显现

　　UIControlStateHighlighted = 1 << 0, 高亮状态显现

　　UIControlStateDisabled = 1 << 1, 禁用的状态才会显现

　　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，可以不管

　　};

　　@property(nonatomic,getter=isEnabled)BOOL enabled; // default isYES. if NO, ignores touch events and subclasses may draw differently

　　@property(nonatomic,getter=isSelected)BOOL selected; // default isNO may be used by some subclasses or by application

　　@property(nonatomic,getter=isHighlighted)BOOL highlighted;

设置button填充图片和背景图片

　　[buttonsetImage:[UIImageimageNamed:@"checkmarkControllerIcon"]forState:UIControlStateNormal];

　　[buttonsetBackgroundImage:[UIImageimageNamed:@"checkmarkControllerIcon"]forState:UIControlStateNormal];

设置button标题和标题颜色

　　[button1 setTitle:@"点击"forState:UIControlStateNormal];

　　[buttonsetTitleColor:[UIColorredColor]forState:UIControlStateNormal];

设置按钮按下会发光

　　button.showsTouchWhenHighlighted=NO;

添加或删除事件处理

　　[button1 addTarget:self action:@selector(butClick:)forControlEvents:UIControlEventTouchUpInside];

　　[btn removeTarget:nil action:nilforControlEvents:UIControlEventTouchUpInside];

设置按钮内部图片间距和标题间距

　　UIEdgeInsets insets; // 设置按钮内部图片间距

　　insets.top = insets.bottom = insets.right = insets.left = 10;

　　bt.contentEdgeInsets = insets;

　　bt.titleEdgeInsets = insets; // 标题间距

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