KHFlatButton

KHFlatButton

https://github.com/kylehorn/KHFlatButton

效果:

对于自己做demo来说,每次设置button就不用这么折腾了,几句话就行了,非常爽:)

其实可以改进的地方非常多的.

源码:

KHFlatButton.h + KHFlatButton.m

//

//  KHFlatButton.h

//

//  Created by Kyle Horn on 10/7/13.

//  Copyright (c) 2013 Kyle Horn. All rights reserved.

//

#import <UIKit/UIKit.h>

@interface KHFlatButton : UIButton

+ (KHFlatButton *)buttonWithFrame:(CGRect)frame

                        withTitle:(NSString *)title

                  backgroundColor:(UIColor *)backgroundColor

                     cornerRadius:(CGFloat)radius;

// Factory method that returns a button with default corner radius of 3.0

+ (KHFlatButton *)buttonWithFrame:(CGRect)frame

                        withTitle:(NSString *)title

                  backgroundColor:(UIColor *)backgroundColor;

+ (UIBarButtonItem *)barButtonWithTitle:(NSString *)title

                        backgroundColor:(UIColor *)backgroundColor;

@property (nonatomic) CGFloat cornerRadius;

@end

//

//  KHFlatButton.m

//

//  Created by Kyle Horn on 10/7/13.

//  Copyright (c) 2013 Kyle Horn. All rights reserved.

//

#import "KHFlatButton.h"

#import <QuartzCore/QuartzCore.h>

static CGFloat const kDefaultCornerRadius = 3.0;

static CGFloat const kMinimumFontSize = 14.0;

static CGFloat const kHighlightDelta = 0.2;

@interface KHFlatButton()

@property (strong, nonatomic) UIColor *originalBackgroundColor;

@end

@implementation KHFlatButton

@dynamic cornerRadius;

- (void)awakeFromNib

{

    [super awakeFromNib];

    self.cornerRadius = kDefaultCornerRadius;

    [self addTarget:self

             action:@selector(wasPressed)

   forControlEvents:(UIControlEventTouchDown       |

                     UIControlEventTouchDownRepeat |

                     UIControlEventTouchDragInside |

                     UIControlEventTouchDragEnter)];

    [self addTarget:self

             action:@selector(endedPress)

   forControlEvents:(UIControlEventTouchCancel      |

                     UIControlEventTouchDragOutside |

                     UIControlEventTouchDragExit    |

                     UIControlEventTouchUpInside    |

                     UIControlEventTouchUpOutside)];

}

- (id)initWithFrame:(CGRect)frame withBackgroundColor:(UIColor*)backgroundColor

{

    return [self initWithFrame:frame

                     withTitle:nil

               backgroundColor:backgroundColor

                  cornerRadius:kDefaultCornerRadius];

}

- (id)initWithFrame:(CGRect)frame withTitle:(NSString *)title backgroundColor:(UIColor*)backgroundColor cornerRadius:(CGFloat)radius;

{

    self = [super initWithFrame:frame];

    if (self)

    {

        self.backgroundColor = backgroundColor;

        self.cornerRadius    = radius;

        [self setTitle:title

              forState:UIControlStateNormal];

        CGFloat fontSize = floorf(CGRectGetHeight(self.bounds) / 2.5);

        self.titleLabel.font = [UIFont boldSystemFontOfSize:MAX(kMinimumFontSize, fontSize)];

        // 根据触摸的状态分离出两个方法,一个方法用于改变自身,一个方法用于还原自身

        [self addTarget:self

                 action:@selector(wasPressed)

       forControlEvents:(UIControlEventTouchDown       |

                         UIControlEventTouchDownRepeat |

                         UIControlEventTouchDragInside |

                         UIControlEventTouchDragEnter)];

        [self addTarget:self

                 action:@selector(endedPress)

       forControlEvents:(UIControlEventTouchCancel      |

                         UIControlEventTouchDragOutside |

                         UIControlEventTouchDragExit    |

                         UIControlEventTouchUpInside    |

                         UIControlEventTouchUpOutside)];

    }

    return self;

}

+ (KHFlatButton *)buttonWithFrame:(CGRect)frame withTitle:(NSString *)title backgroundColor:(UIColor *)backgroundColor cornerRadius:(CGFloat)radius

{

    KHFlatButton *btn = [[KHFlatButton alloc] initWithFrame:frame

                                                  withTitle:title

                                            backgroundColor:backgroundColor

                                               cornerRadius:radius];

    return btn;

}

+ (KHFlatButton *)buttonWithFrame:(CGRect)frame withTitle:(NSString *)title backgroundColor:(UIColor *)backgroundColor

{

    KHFlatButton *btn = [[KHFlatButton alloc] initWithFrame:frame

                                                  withTitle:title

                                            backgroundColor:backgroundColor

                                               cornerRadius:kDefaultCornerRadius];

    return btn;

}

+ (UIBarButtonItem *)barButtonWithTitle:(NSString *)title backgroundColor:(UIColor *)backgroundColor

{

    KHFlatButton *btn = [[KHFlatButton alloc]initWithFrame:CGRectZero withTitle:title backgroundColor:backgroundColor cornerRadius:kDefaultCornerRadius];

    // Add padding to button label

    btn.titleLabel.textAlignment = NSTextAlignmentCenter;

    [btn sizeToFit];

    CGRect frame = btn.frame;

    frame.size.width += ;

    btn.frame = frame;

    btn.titleLabel.font = [UIFont boldSystemFontOfSize:13.0];

    UIBarButtonItem *barBtn = [[UIBarButtonItem alloc] initWithCustomView:btn];

    return barBtn;

}

- (void)setBackgroundColor:(UIColor *)backgroundColor

{

    super.backgroundColor = backgroundColor;

    self.originalBackgroundColor = backgroundColor;

}

- (void)wasPressed

{

    CGFloat red, grn, blu, white, alpha = 0.0;

    [self.originalBackgroundColor getRed:&red

                                   green:&grn

                                    blue:&blu

                                   alpha:&alpha];

    [self.originalBackgroundColor getWhite:&white

                                     alpha:&alpha];

    super.backgroundColor = [UIColor colorWithRed:red - kHighlightDelta

                                            green:grn - kHighlightDelta

                                             blue:blu - kHighlightDelta

                                            alpha:alpha];

}

- (void)endedPress

{

    super.backgroundColor = self.originalBackgroundColor;

}

- (void)setCornerRadius:(CGFloat)cornerRadius

{

    self.layer.cornerRadius = cornerRadius;

}

- (CGFloat)cornerRadius

{

    return self.layer.cornerRadius;

}

@end

//

//  RootViewController.m

//

//  Copyright (c) 2014年 Y.X. All rights reserved.

//

#import "RootViewController.h"

#import "KHFlatButton.h"

@interface RootViewController ()

@end

@implementation RootViewController

- (void)viewDidLoad

{

    [super viewDidLoad];

    self.view.backgroundColor = [UIColor blackColor];

    // 初始化按钮

    KHFlatButton *button = \

        [KHFlatButton buttonWithFrame:(CGRect){CGPointZero, CGSizeMake(, )}

                            withTitle:@"YouXianMing"

                      backgroundColor:[UIColor magentaColor]];

    button.center = self.view.center;

    [self.view addSubview:button];

    // 添加事件

    [button addTarget:self

               action:@selector(buttonsEvent:)

     forControlEvents:UIControlEventTouchUpInside];

}

- (void)buttonsEvent:(KHFlatButton *)button

{

    NSLog(@"%@", button);

}

@end

这个地方才是我们需要学习的地方: