UIKit之浅析UIButton
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UIButton * button =[[UIButton alloc]init]; button.backgroundColor=[UIColor redColor]; [button setTitle:@"我是button" forState:UIControlStateNormal]; button.frame = CGRectMake(50, 50, 150, 120) ; [self.view addSubview:button];
可能有时候,想让title不在中间或者靠某一边,现在就举个例子怎么把文字在button的底部。
代码:
button.contentEdgeInsets = UIEdgeInsetsMake(100, 0, 0, 0);
然后看一下 视图是这个样子:
这里边用到
button.contentEdgeInsets = UIEdgeInsetsMake(100, 0, 0, 0); //UIEdgeInsetsMake(距离top的距离, 距离left的距离, 距离botton的距离, 距离right的距离)
//设置 button的内容的便宜量
@property(nonatomic) UIEdgeInsets contentEdgeInsets UI_APPEARANCE_SELECTOR; // 这是内容的偏移量@property(nonatomic) UIEdgeInsets titleEdgeInsets; // title的偏移量@property(nonatomic) BOOL reversesTitleShadowWhenHighlighted; // default is NO. if YES, shadow reverses to shift between engrave and emboss appearance@property(nonatomic) UIEdgeInsets imageEdgeInsets; // image的偏移量@property(nonatomic) BOOL adjustsImageWhenHighlighted; // default is YES. if YES, image is drawn darker when highlighted(pressed)当高亮的时候if yes 图片自适应
@property(nonatomic) BOOL adjustsImageWhenDisabled; // default is YES. if YES, image is drawn lighter when disabled
@property(nonatomic) BOOL showsTouchWhenHighlighted; // 当高亮的时候if yes 图片自适应
@property(nonatomic,retain) UIColor *tintColor NS_AVAILABLE_IOS(5_0); //高亮颜色
@property(nonatomic,readonly) UIButtonType buttonType; //button的类型
[button setTitleShadowColor:[UIColor redColor] forState:UIControlStateNormal];
//设置文字的边框颜色
不太明显,效果还是有的。
typedef NS_ENUM(NSInteger, UIButtonType) { UIButtonTypeCustom = 0, // no button type UIButtonTypeSystem NS_ENUM_AVAILABLE_IOS(7_0), // standard system button UIButtonTypeDetailDisclosure, UIButtonTypeInfoLight, UIButtonTypeInfoDark, // UIButtonTypeContactAdd, //按钮上面是哥加号 UIButtonTypeRoundedRect = UIButtonTypeSystem, //系统默认的};
创建button的另一中写法:
button =[UIButton buttonWithType:UIButtonTypeInfoDark];
- (void)setTitle:(NSString *)title forState:(UIControlState)state; // 设置button的title- (void)setTitleColor:(UIColor *)color forState:(UIControlState)state UI_APPEARANCE_SELECTOR; // 设置buttontitle的颜色- (void)setTitleShadowColor:(UIColor *)color forState:(UIControlState)state UI_APPEARANCE_SELECTOR; // default is nil. use 50% black设置title的字体的阴影颜色- (void)setImage:(UIImage *)image forState:(UIControlState)state; // default is nil. should be same size if different for different states 设置button的image 图片 大小是图片的真实大小- (void)setBackgroundImage:(UIImage *)image forState:(UIControlState)state UI_APPEARANCE_SELECTOR; // default is nil 设置图片的背景 image会铺满button- (void)setAttributedTitle:(NSAttributedString *)title forState:(UIControlState)state NS_AVAILABLE_IOS(6_0); // default is nil. title is assumed to be single line 设置 自定义的字符串为button的title
- (NSString *)titleForState:(UIControlState)state; // 获取某个状态的title- (UIColor *)titleColorForState:(UIControlState)state; //获取某个状态的title的字体颜色- (UIColor *)titleShadowColorForState:(UIControlState)state; //获得某个状态的阴影颜色- (UIImage *)imageForState:(UIControlState)state; //获得某个状态的image- (UIImage *)backgroundImageForState:(UIControlState)state; //获得背景图片- (NSAttributedString *)attributedTitleForState:(UIControlState)state NS_AVAILABLE_IOS(6_0); //获得自定义字符串
@property(nonatomic,readonly,retain) NSString *currentTitle; // normal/highlighted/selected/disabled. can return nil 正常获取当前的title@property(nonatomic,readonly,retain) UIColor *currentTitleColor; // normal/highlighted/selected/disabled. always returns non-nil. default is white(1,1) 获取当前title的颜色@property(nonatomic,readonly,retain) UIColor *currentTitleShadowColor; // normal/highlighted/selected/disabled. default is white(0,0.5).获取当前的阴影颜色@property(nonatomic,readonly,retain) UIImage *currentImage; // normal/highlighted/selected/disabled. can return nil 获取当前的imager@property(nonatomic,readonly,retain) UIImage *currentBackgroundImage; // normal/highlighted/selected/disabled. can return nil 获取当前的背景image@property(nonatomic,readonly,retain) NSAttributedString *currentAttributedTitle NS_AVAILABLE_IOS(6_0); // normal/highlighted/selected/disabled. can return nil// return title and image views. will always create them if necessary. always returns nil for system buttons@property(nonatomic,readonly,retain) UILabel *titleLabel NS_AVAILABLE_IOS(3_0); 获取content的view 就是一个lable@property(nonatomic,readonly,retain) UIImageView *imageView NS_AVAILABLE_IOS(3_0); imageView 就是button的image的试图
(CGRect)backgroundRectForBounds:(CGRect)bounds;- (CGRect)contentRectForBounds:(CGRect)bounds;- (CGRect)titleRectForContentRect:(CGRect)contentRect;- (CGRect)imageRectForContentRect:(CGRect)contentRect;@end@interface UIButton(UIButtonDeprecated)@property(nonatomic,retain) UIFont *font NS_DEPRECATED_IOS(2_0, 3_0);//通过这个可以给title设置字体@property(nonatomic) NSLineBreakMode lineBreakMode NS_DEPRECATED_IOS(2_0, 3_0);// 换行模式@property(nonatomic) CGSize titleShadowOffset NS_DEPRECATED_IOS(2_0, 3_0); // title的偏移量@end
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