第一、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;
第二、设置frame
button1.frame = CGRectMake(20, 20, 280, 40);
[button setFrame:CGRectMake(20,20,50,50)];
第三、button背景色
button1.backgroundColor = [UIColor clearColor];
[button setBackgroundColor:[UIColor blueColor]];
第四、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 is YES. if NO, ignores touch events and subclasses may draw differently
@property(nonatomic,getter=isSelected)BOOL selected; // default is NO may be used by some subclasses or by application
@property(nonatomic,getter=isHighlighted)BOOL highlighted;
第五 、设置button填充图片和背景图片
[buttonsetImage:[UIImageimageNamed:@"checkmarkControllerIcon"]forState:UIControlStateNormal];
[buttonsetBackgroundImage:[UIImageimageNamed:@"checkmarkControllerIcon"]forState:UIControlStateNormal];
第六、设置button标题和标题颜色
[button1 setTitle:@"点击" forState:UIControlStateNormal];
[buttonsetTitleColor:[UIColorredColor]forState:UIControlStateNormal];
第七、设置按钮按下会发光
button.showsTouchWhenHighlighted=NO;
第八、添加或删除事件处理
[button1 addTarget:self action:@selector(butClick:) forControlEvents:UIControlEventTouchUpInside];
[btn removeTarget:nil action:nil forControlEvents:UIControlEventTouchUpInside];
第九、 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
设置圆角按钮
UIButton *signBtn = [UIButton buttonWithType:UIButtonTypeCustom];
signBtn.frame = CGRectMake(100, 100, 80, 40);
[signBtn.layer setMasksToBounds:YES];
[signBtn.layer setCornerRadius:10.0];
//设置矩形四个圆角半径
[signBtn.layer setBorderWidth:1.0];
//边框宽度
CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
CGColorRef colorref = CGColorCreate(colorSpace,(CGFloat[]){ 1, 0, 0, 1 });
[signBtn.layer setBorderColor:colorref];
//边框颜色.
[self.view addSubview:signBtn];
//获取按钮上的文字
NSString *str=btn.currenttitle;
//吧按钮上的文字转换成数字类型
int score=str.intvalue;
//延迟0.5S后所执行的事件
[signBtn performSelector:@selector(clickbtn) withObject:nil afterDelay:0.5];