1.Button的定义
UIButton *btn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
Button有六种类型
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;
2.设置尺寸
btn.frame = CGRectMake(0, 0, 100, 100);
[btn setFrame:CGRectMake(0,0,100,100)];
3.设置背景
button1.backgroundColor = [UIColor clearColor];
[button setBackgroundColor:[UIColor blueColor]];
4.state状态
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
};
[btn setTitle:@"cancel" forState:UIControlStateNormal];
5.设置button填充图片和背景图片
[btn setImage:[UIImageimageNamed:@"aaa"]forState:UIControlStateNormal];
[btn setBackgroundImage:[UIImageimageNamed:@"aaa"]forState:UIControlStateNormal];
6.添加或删除事件处理
[btn addTarget:self action:@selector(btnClick:) forControlEvents:UIControlEventTouchUpInside];
[btn removeTarget:nil action:nil forControlEvents:UIControlEventTouchUpInside];
7.按钮是否可以响应
btn.enabled = NO;