【学习笔记】UIButton

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// UIButton.h

#import <Foundation/Foundation.h>

#import <UIKit/UIControl.h>

#import <UIKit/UIGeometry.h>

#import <UIKit/UIStringDrawing.h>

#import <UIKit/UIKitDefines.h>

@class UIImage, UIFont,UIColor,UIImageView,UILabel;

//button样式选择，默认是无

typedef NS_ENUM(NSInteger, UIButtonType) {

UIButtonTypeCustom = 0, 自定义风格(无边框的那种)

UIButtonTypeSystem NS_ENUM_AVAILABLE_IOS(7_0), 圆角矩形(系统的那种)

UIButtonTypeDetailDisclosure, （ios7上变成一个亮的蓝色感叹号）

UIButtonTypeInfoLight, 亮色感叹号

UIButtonTypeInfoDark, 暗色感叹号

UIButtonTypeContactAdd, 十字加号按钮

};

NS_CLASS_AVAILABLE_IOS(2_0)@interfaceUIButton : UIControl <NSCoding>

+ (id)buttonWithType:(UIButtonType)buttonType;

//创建button，选择样式

UIButton *button1 = [UIButton buttonWithType:UIButtonTypeRoundedRect];

//位置

button1.frame = CGRectMake(100,100,50,50);

[self.view add :buttob ];

内容到边缘距离（上左下右）

@property(nonatomic) UIEdgeInsets contentEdgeInsetsUI_APPEARANCE_SELECTOR;

btn.contentEdgeInsets = UIEdgeInsetsMake(0,10, 0,0);

标题到边缘距离，同上

@property(nonatomic) UIEdgeInsets titleEdgeInsets;

图片到边缘距离，同上

@property(nonatomic) UIEdgeInsets imageEdgeInsets;

确定按钮高亮时是否改变阴影的Bool值.默认时NO

@property(nonatomic) BOOL reversesTitleShadowWhenHighlighted;

图片随按钮高亮而高亮，默认YES

@property(nonatomic) BOOL adjustsImageWhenHighlighted;

btton.adjustsImageWhenHighlighted = NO;

图片随按钮失效而变暗,默认YES

@property(nonatomic) BOOL adjustsImageWhenDisabled;

按下会有白色光点,默认NO

@property(nonatomic) BOOL showsTouchWhenHighlighted;

@property(nonatomic,retain) UIColor *tintColor NS_AVAILABLE_IOS(5_0);

// The tintColor is inherited through the superview hierarchy.See UIView for more information.

//标题文字

- (void)setTitle:(NSString*)title forState:(UIControlState)state;

[button1 setTitle:@"BTN1" forState:UIControlStateNormal];

// 标题颜色，默认正常黑

- (void)setTitleColor:(UIColor*)color forState:(UIControlState)stateUI_APPEARANCE_SELECTOR;

[button1 setTitleColor:[UIColor redColor] forState:UIControlStateNormal];

// 阴影颜色，默认50%

- (void)setTitleShadowColor:(UIColor*)color forState:(UIControlState)stateUI_APPEARANCE_SELECTOR;

[button1 setTitleShadowColor:[UIColor grayColor] forState:UIControlStateNormal];

// 设置图片,原来大小，默认无

- (void)setImage:(UIImage*)image forState:(UIControlState)state;

//[button1 setImage:[UIImage imageNamed:@"image"] forState:UIControlStateNormal];

// 设置背景图片，拉伸或压缩，默认无

- (void)setBackgroundImage:(UIImage*)image forState:(UIControlState)stateUI_APPEARANCE_SELECTOR;

[button1 setBackgroundImage:[UIImage imageNamed:@"P"] forState:UIControlStateHighlighted];

//上述5个对应选择状态

- (void)setAttributedTitle:(NSAttributedString*)title forState:(UIControlState)stateNS_AVAILABLE_IOS(6_0);

- (NSString *)titleForState:(UIControlState)state;

- (UIColor *)titleColorForState:(UIControlState)state;

- (UIColor *)titleShadowColorForState:(UIControlState)state;

- (UIImage *)imageForState:(UIControlState)state;

- (UIImage *)backgroundImageForState:(UIControlState)state;

返回在某个状态下，按钮标题的富文本

- (NSAttributedString *)attributedTitleForState:(UIControlState)stateNS_AVAILABLE_IOS(6_0);

NSAttributedString *attributedString = [button attributedTitleForState:UIControlStateNormal];

得到当前状态（只读）

@property(nonatomic,readonly)UIButtonType buttonType;

//当前按钮上显示的标题(只读),当按钮状态改变时值自动改变.值可以为nil.

@property(nonatomic,readonly,retain)NSString*currentTitle;

当前标题颜色(只读).此值要保证不为nil,默认是白色

@property(nonatomic,readonly,retain)UIColor *currentTitleColor;

// 标题的阴影颜色(只读).默认是白色

@property(nonatomic,readonly,retain)UIColor *currentTitleShadowColor;

当前按钮上的图片(只读).可以是nil.

@property(nonatomic,readonly,retain)UIImage *currentImage;

// 当前按钮背景图片(只读).可以是nil.

@property(nonatomic,readonly,retain)UIImage *currentBackgroundImage;

@property(nonatomic,readonly,retain)UILabel *titleLabel NS_AVAILABLE_IOS(3_0);

@property(nonatomic,readonly,retain)UIImageView*imageView NS_AVAILABLE_IOS(3_0);

@property(nonatomic,readonly,retain)NSAttributedString*currentAttributedTitle NS_AVAILABLE_IOS(6_0);

得到尺寸

返回背景绘制区域

- (CGRect)backgroundRectForBounds:(CGRect)bounds;

返回内容绘制区域.内容区域是显示图片和标题及他们特定对齐缩放等的范围

- (CGRect)contentRectForBounds:(CGRect)bounds;

返回标题的绘制区域.

- (CGRect)titleRectForContentRect:(CGRect)contentRect;

返回图片的绘制区域.

- (CGRect)imageRectForContentRect:(CGRect)contentRect;

@end

@interfaceUIButton(UIButtonDeprecated)

@property(nonatomic,retain)UIFont *font NS_DEPRECATED_IOS(2_0,3_0);

@property(nonatomic) NSLineBreakMode lineBreakMode NS_DEPRECATED_IOS(2_0,3_0);

@property(nonatomic) CGSize titleShadowOffsetNS_DEPRECATED_IOS(2_0,3_0);

@end

UIControlState 状态

1 UIControlStateNormal = 0,

2 UIControlStateHighlighted = 1 << 0, // 高亮

3 UIControlStateDisabled = 1 << 1,

4 UIControlStateSelected = 1 << 2, // 选中

5 UIControlStateApplication = 0x00FF0000, // 当应用程序标志使用时

6 UIControlStateReserved = 0xFF000000 // 为内部框架预留

UIControlEvents 事件方法

UIControlEventTouchDown = 1 << 0,
UIControlEventTouchDownRepeat = 1 << 1,
UIControlEventTouchDragInside = 1 << 2,
UIControlEventTouchDragOutside = 1 << 3,
UIControlEventTouchDragEnter = 1 << 4,
UIControlEventTouchDragExit = 1 << 5,
UIControlEventTouchUpInside = 1 << 6, 基本就用这个
UIControlEventTouchUpOutside = 1 << 7,
UIControlEventTouchCancel = 1 << 8,
UIControlEventValueChanged = 1 << 12,
UIControlEventEditingDidBegin = 1 << 16,
UIControlEventEditingChanged = 1 << 17,
UIControlEventEditingDidEnd = 1 << 18,
UIControlEventEditingDidEndOnExit = 1 << 19,
UIControlEventAllTouchEvents = 0x00000FFF,
UIControlEventAllEditingEvents = 0x000F0000,
UIControlEventApplicationReserved = 0x0F000000,
UIControlEventSystemReserved = 0xF0000000,
UIControlEventAllEvents = 0xFFFFFFFF

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