iOS-UIButton的基本使用
一、UIButton的基本设置
//初始化按钮
UIButton * button = [UIButton buttonWithType:UIButtonTypeCustom];
//UIButton * button = [[UIButton alloc] initWithFrame:CGRectMake(100, 100, 120, 50)];
//按钮类型
typedef NS_ENUM(NSInteger, UIButtonType) {
UIButtonTypeCustom = 0, //无类型，需要自定义
UIButtonTypeSystem NS_ENUM_AVAILABLE_IOS(7_0), //系统类型
//以下3种样式，iOS7以前不一样，扁平化以后都一样
UIButtonTypeDetailDisclosure, //详细描述样式，圆圈中间加个i
UIButtonTypeInfoLight, //浅色的详细描述样式
UIButtonTypeInfoDark, //深色的详细描述样式
UIButtonTypeContactAdd, //圆圈中间有个加号
UIButtonTypePlain API_AVAILABLE(tvos(11.0)) __IOS_PROHIBITED __WATCHOS_PROHIBITED,
UIButtonTypeRoundedRect = UIButtonTypeSystem //iOS7以后圆角按钮被 UIButtonTypeSystem 取代 两者等同
};
//设置位置尺寸
button.frame = CGRectMake(100, 100, 120, 50);
//设置按钮的背景颜色
button.backgroundColor = [UIColor cyanColor];
//设置文字
[button setTitle:@"按钮" forState:UIControlStateNormal];
//设置文字颜色
[button setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
//设置字体大小
button.titleLabel.font = [UIFont systemFontOfSize:25];
//设置文字的阴影颜色
[button setTitleShadowColor:[UIColor yellowColor] forState:UIControlStateNormal];
//设置背景图片
[button setImage:[UIImage imageNamed:@"bottom_normal"] forState:UIControlStateNormal];
//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
typedef NS_OPTIONS(NSUInteger, UIControlState) {
UIControlStateNormal = 0, //常规状态
UIControlStateHighlighted = 1 << 0, //高亮状态
UIControlStateDisabled = 1 << 1, //禁用的状态
UIControlStateSelected = 1 << 2, //选中状态
UIControlStateFocused NS_ENUM_AVAILABLE_IOS(9_0) = 1 << 3, //聚焦状态
}; 二、获取Button相关参数
@property(nonatomic) UIEdgeInsets contentEdgeInsets; //内容内边距
@property(nonatomic) UIEdgeInsets titleEdgeInsets; //标题内边距
@property(nonatomic) UIEdgeInsets imageEdgeInsets; //图片内边距
@property(nonatomic) BOOL reversesTitleShadowWhenHighlighted;//标题的阴影改变时,按钮是否高亮显示.默认为NO
@property(nonatomic) BOOL adjustsImageWhenHighlighted;//按钮高亮的情况下,图像的颜色是否要加深一点.默认是YES
@property(nonatomic) BOOL adjustsImageWhenDisabled; //按钮禁用的情况下,图像的颜色是否要加深一点.默认是YES
@property(nonatomic) BOOL showsTouchWhenHighlighted;//按下按钮是否会发光,默认是NO
//返回button 某个状态下的标题
- (nullable NSString *)titleForState:(UIControlState)state;
//返回button 某个状态下的标题颜色
- (nullable UIColor *)titleColorForState:(UIControlState)state;
//返回button 某个状态下的阴影标题颜色
- (nullable UIColor *)titleShadowColorForState:(UIControlState)state;
//返回button 某个状态下的图片
- (nullable UIImage *)imageForState:(UIControlState)state;
//返回button 某个状态下的背景图片
- (nullable UIImage *)backgroundImageForState:(UIControlState)state;
@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; // 当前富文本标题
@property(nullable, nonatomic,readonly,strong) UILabel *titleLabel; // 当前标题UILabel
@property(nullable, nonatomic,readonly,strong) UIImageView *imageView; // 当前图片UIImageView三、事件监听
[button addTarget:self action:@selector(butClick:) forControlEvents:UIControlEventTouchUpInside];
-(void)butClick:(UIButton *)button
{
}
//事件状态
typedef NS_OPTIONS(NSUInteger, UIControlEvents) {
UIControlEventTouchDown, //单点触摸按下事件：用户点触屏幕，或者又有新手指落下的时候
UIControlEventTouchDownRepeat, //多点触摸按下事件，点触计数大于1：用户按下第二、三、或第四根手指的时候
UIControlEventTouchDragInside, //当一次触摸在控件窗口内拖动时
UIControlEventTouchDragOutside, //当一次触摸在控件窗口之外拖动时
UIControlEventTouchDragEnter, //当一次触摸从控件窗口之外拖动到内部时
UIControlEventTouchDragExit, //当一次触摸从控件窗口内部拖动到外部时
UIControlEventTouchUpInside, //所有在控件之内触摸抬起事件
UIControlEventTouchUpOutside, //所有在控件之外触摸抬起事件
UIControlEventTouchCancel, //所有触摸取消事件
UIControlEventValueChanged, //当控件的值发生改变时，发送通知。用于滑块、分段控件、以及其他取值的控件。
UIControlEventEditingDidBegin, // 当文本控件中开始编辑时发送通知
UIControlEventEditingChanged, // 当文本控件中的文本被改变时发送通知
UIControlEventEditingDidEnd, // 当文本控件中编辑结束时发送通知
UIControlEventEditingDidEndOnExit, // 当文本控件内通过按下回车键（或等价行为）结束编辑时，发送通知
UIControlEventAllTouchEvents, // 通知所有触摸事件
UIControlEventAllEditingEvents, // 通知所有关于文本编辑的事件
UIControlEventApplicationReserved, // range available for application use
UIControlEventSystemReserved, // range reserved for internal framework use
UIControlEventAllEvents, // 通知所有事件
};