创建
UIButton * btn = [[UIButton alloc] init];
UIButton *btn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
typedef NS_ENUM(NSInteger, UIButtonType) {
UIButtonTypeCustom = 0, // 自定义按钮
UIButtonTypeSystem NS_ENUM_AVAILABLE_IOS(7_0), // 系统按钮 iOS7以后圆角按钮被 UIButtonTypeSystem 取代 两者等同
UIButtonTypeDetailDisclosure, // 蓝色箭头按钮（用作详
UIButtonTypeInfoLight, // 亮色感叹号按钮
UIButtonTypeInfoDark, // 深色感叹号按钮
UIButtonTypeContactAdd, // 加号按钮
UIButtonTypeRoundedRect = UIButtonTypeSystem, // Deprecated, use UIButtonTypeSystem instead
};
状态
typedef NS_OPTIONS(NSUInteger, UIControlState) {
UIControlStateNormal = 0, // 正常状态
UIControlStateHighlighted = 1 << 0, // 高亮状态
UIControlStateDisabled = 1 << 1, // 失效状态
UIControlStateSelected = 1 << 2, // 选中状态
UIControlStateFocused NS_ENUM_AVAILABLE_IOS(9_0) = 1 << 3, // 聚焦状态 （iOS新加入 应该和3D Touch有关）
UIControlStateApplication = 0x00FF0000, // 当用做应用标志时
UIControlStateReserved = 0xFF000000 // 框架预留 无意义
};
属性
// frame
btn.frame = CGRectMake(20, 20, 70, 30);
// 背景色
btn.backgroundColor = [UIColor redColor];
// 标题
[btn setTitle:@"按钮" forState:UIControlStateNormal]; // 标题
[btn setTitleColor:[UIColor redColor] forState:UIControlStateNormal]; // 标题颜色
[btn setTitleShadowColor:[UIColor redColor] forState:UIControlStateNormal]; // 标题阴影颜色
// 图片
[btn setImage:[UIImage imageNamed:@"btnIcon"] forState:UIControlStateNormal]; // 不会被拉伸，原比例显示
[btn setBackgroundImage:[UIImage imageNamed:@"btnBgImg"] forState:UIControlStateNormal]; // 会被拉伸，充满整个btn
// 间距
btn.contentEdgeInsets = UIEdgeInsetsMake(5, 5, 5, 5); // btn整体内容四周的间距
btn.titleEdgeInsets = UIEdgeInsetsMake(5, 5, 5, 5); // 标题四周间距
btn.imageEdgeInsets = UIEdgeInsetsMake(5, 5, 5, 5); // 图片四周间距
// 设置高亮状态 加深图片颜色
btn.adjustsImageWhenHighlighted = NO; // 默认为YES 设置为NO取消效果
// 设置失效状态 加深图片颜色
btn.adjustsImageWhenDisabled = NO; // 默认为YES 设置NO取消效果
// 设置高亮状态 按钮发光
btn.showsTouchWhenHighlighted = YES; // 默认为NO
// 设置高亮状态 是否改变阴影
btn. reversesTitleShadowWhenHighlighted = YES; // 默认为NO
事件
// 添加事件
[btn addTarget:self action:@selector(clickBtn:) forControlEvents:UIControlEventTouchUpInside];
// 事件状态
typedef NS_OPTIONS(NSUInteger, UIControlEvents) {
UIControlEventTouchDown = 1 << 0, // 按下
UIControlEventTouchDownRepeat = 1 << 1, // 多次按下
UIControlEventTouchDragInside = 1 << 2, // 保持按下,在按钮及其一定的外围拖动
UIControlEventTouchDragOutside = 1 << 3, // 保持按下,在按钮外面拖动
UIControlEventTouchDragEnter = 1 << 4, // DragOutside进入DragInside触发
UIControlEventTouchDragExit = 1 << 5, // DragInside到DragOutside触发
UIControlEventTouchUpInside = 1 << 6, // 按钮及其一定外围内松开
UIControlEventTouchUpOutside = 1 << 7, // 按钮外面松开
UIControlEventTouchCancel = 1 << 8, // 点击取消
... ...
}
获取
@property(nullable, nonatomic,readonly,strong) NSString *currentTitle; // 当前标题
@property(nonatomic,readonly,strong) UIColor *currentTitleColor; // 当前标题颜色
@property(nullable, nonatomic,readonly,strong) UIColor *currentTitleShadowColor; // 当前标题阴影颜色
@property(nullable, nonatomic,readonly,strong) UIImage *currentImage; // 当前图片
@property(nullable, nonatomic,readonly,strong) UIImage *currentBackgroundImage; // 当前背景图片
@property(nullable, nonatomic,readonly,strong) NSAttributedString *currentAttributedTitle NS_AVAILABLE_IOS(6_0); // 当前富文本标题
@property(nullable, nonatomic,readonly,strong) UILabel *titleLabel NS_AVAILABLE_IOS(3_0); // 当前标题UILabel
@property(nullable, nonatomic,readonly,strong) UIImageView *imageView NS_AVAILABLE_IOS(3_0); // 当前图片UIImageView
- (CGRect)backgroundRectForBounds:(CGRect)bounds; // 返回背景绘制区域
- (CGRect)contentRectForBounds:(CGRect)bounds; // 返回内容绘制区域
- (CGRect)titleRectForContentRect:(CGRect)contentRect; // 返回标题绘制区域
- (CGRect)imageRectForContentRect:(CGRect)contentRect; // 返回图片绘制区域
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