////  ChooseOnlyButton.h//  ChooseOnlyButton////  Created by YouXianMing on 14/11/4.//  Copyright (c) 2014年 YouXianMing. All rights reserved.//#import <UIKit/UIKit.h>@class ChooseOnlyButton;@protocol ChooseOnlyButtonDelegate <NSObject>@optional- (void)chooseButtonTitle:(NSString *)title;@end@interface ChooseOnlyButton : UIView/** *  代理 */@property (nonatomic, assign) id<ChooseOnlyButtonDelegate>  delegate;/** *  选取的按钮的标题(只读) */@property (nonatomic, strong, readonly)  NSString *selectedTitle;/** *  标题的数组 */@property (nonatomic, strong) NSArray  *titles;/** *  按钮离左侧的距离 */@property (nonatomic, assign) CGFloat   gapFromLeft;/** *  两个按钮之间的水平距离 */@property (nonatomic, assign) CGFloat   gapFromHorizontalButton;/** *  两个按钮之间的垂直间距 */@property (nonatomic, assign) CGFloat   gapFromVerticalButton;/** *  按钮高度 */@property (nonatomic, assign) CGFloat   buttonHeight;/** *  按钮标题字体 */@property (nonatomic, strong) UIFont   *buttonTitleFont;/** *  没有选中状态下的按钮的背景颜色以及按钮字体的颜色 */@property (nonatomic, strong) UIColor  *normalButtonBackgroundColor;@property (nonatomic, strong) UIColor  *normalButtonTitleColor;/** *  选中状态下的按钮的背景颜色以及按钮字体的颜色 */@property (nonatomic, strong) UIColor  *selectedButtonBackgroundColor;@property (nonatomic, strong) UIColor  *selectedButtonTitleColor;/** *  重设view的尺寸并且创建出新的按钮 */- (void)resetSizeAndCreateButtons;/** *  重新计算frame * *  @return frame值 */- (CGRect)calculateFrame;@end

////  ChooseOnlyButton.m//  ChooseOnlyButton////  Created by YouXianMing on 14/11/4.//  Copyright (c) 2014年 YouXianMing. All rights reserved.//#import "ChooseOnlyButton.h"@implementation ChooseOnlyButton- (instancetype)initWithFrame:(CGRect)frame{    self = [super initWithFrame:frame];    if (self) {            }    return self;}- (void)resetSizeAndCreateButtons {        // 没有元素则退出    if (_titles.count == 0) {        return;    }    // 没有设置左边距则默认值为5.f    if (_gapFromLeft == 0) {        _gapFromLeft = 5.f;    }        // 没有设置水平按钮间距则默认值为5.f    if (_gapFromHorizontalButton == 0) {        _gapFromHorizontalButton = 5.f;    }        // 没有设置垂直按钮间距则默认值为5.f    if (_gapFromVerticalButton == 0) {        _gapFromVerticalButton = 5.f;    }        // 没有设置按钮高度则按钮默认高度为20.f    if (_buttonHeight == 0) {        _buttonHeight = 20.f;    }        // 获取frame宽度    CGFloat frameWidth  = self.bounds.size.width;        // 计算出按钮宽度    CGFloat buttonWidth = (frameWidth - _gapFromLeft*2 - _gapFromHorizontalButton)/2.f;        // 动态创建出按钮    for (int i = 0; i < _titles.count; i++) {        UIButton *button = [[UIButton alloc] initWithFrame:                            CGRectMake(_gapFromLeft + (buttonWidth + _gapFromHorizontalButton)*(i%2),                                       (i/2)*(_buttonHeight + _gapFromVerticalButton),                                       buttonWidth,                                       _buttonHeight)];                // 设置按钮圆角        button.layer.cornerRadius = _buttonHeight/2.f;        [button addTarget:self                   action:@selector(buttonsEvent:)         forControlEvents:UIControlEventTouchUpInside];                // 设置按钮标题 + 默认的标题颜色        [button setTitle:_titles[i] forState:UIControlStateNormal];        [self normalButtonStyle:button];        // 设置字体        if (_buttonTitleFont) {            button.titleLabel.font = _buttonTitleFont;        }                [self addSubview:button];    }        // 重设自身view高度    CGFloat selfViewHeight = _buttonHeight*((_titles.count - 1)/2 + 1) + _gapFromVerticalButton*((_titles.count - 1)/2);    CGRect rect            = self.frame;    rect.size.height       = selfViewHeight;    self.frame             = rect;}- (CGRect)calculateFrame {        // 没有元素则退出    if (_titles.count == 0) {        return CGRectZero;    }        // 没有设置左边距则默认值为5.f    if (_gapFromLeft == 0) {        _gapFromLeft = 5.f;    }        // 没有设置水平按钮间距则默认值为5.f    if (_gapFromHorizontalButton == 0) {        _gapFromHorizontalButton = 5.f;    }        // 没有设置垂直按钮间距则默认值为5.f    if (_gapFromVerticalButton == 0) {        _gapFromVerticalButton = 5.f;    }        // 没有设置按钮高度则按钮默认高度为20.f    if (_buttonHeight == 0) {        _buttonHeight = 20.f;    }        // 根据控件的一些参数计算出高度    CGFloat selfViewHeight = _buttonHeight*((_titles.count - 1)/2 + 1) + _gapFromVerticalButton*((_titles.count - 1)/2);    CGRect rect            = self.frame;    rect.size.height       = selfViewHeight;        // 返回控件    return rect;}- (void)buttonsEvent:(UIButton *)button {    [[self subviews] enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {        if ([obj isKindOfClass:[UIButton class]]) {            if ([button isEqual:obj]) {                // 选中按钮的样式                [self selectButtonStyle:obj];                                UIButton *button = (UIButton *)obj;                                // 获取到选取的按钮标题                _selectedTitle = button.titleLabel.text;                                // 代理                if (_delegate && [_delegate respondsToSelector:@selector(chooseButtonTitle:)]) {                                        [_delegate chooseButtonTitle:button.titleLabel.text];                }            } else {                [self normalButtonStyle:obj];            }        }    }];}#pragma mark - 私有方法/** *  普通按钮的样式 * *  @param button 要改变样式的按钮 */- (void)normalButtonStyle:(UIButton *)button {        if (_normalButtonTitleColor) {        [button setTitleColor:_normalButtonTitleColor                     forState:UIControlStateNormal];    } else {        [button setTitleColor:[UIColor colorWithRed:0.000 green:0.361 blue:0.671 alpha:1]                     forState:UIControlStateNormal];    }    if (_normalButtonBackgroundColor) {        button.backgroundColor = _normalButtonBackgroundColor;    } else {        button.backgroundColor = [UIColor clearColor];    }        button.layer.borderColor = [UIColor colorWithRed:0.843 green:0.843 blue:0.843 alpha:1].CGColor;    button.layer.borderWidth = 1.f;}/** *  选中按钮时的样式 * *  @param button 要改变样式的按钮 */- (void)selectButtonStyle:(UIButton *)button {        if (_selectedButtonTitleColor) {        [button setTitleColor:_selectedButtonTitleColor                     forState:UIControlStateNormal];    } else {        [button setTitleColor:[UIColor colorWithRed:0.973 green:0.984 blue:0.988 alpha:1]                     forState:UIControlStateNormal];    }    if (_selectedButtonBackgroundColor) {        button.backgroundColor = _selectedButtonBackgroundColor;    } else {        button.backgroundColor = [UIColor colorWithRed:0.055 green:0.365 blue:0.663 alpha:1];    }        button.layer.borderColor = [UIColor colorWithRed:0.055 green:0.365 blue:0.663 alpha:1].CGColor;    button.layer.borderWidth = 1.f;}@end

////  ViewController.m//  ChooseOnlyButton////  Created by YouXianMing on 14/11/4.//  Copyright (c) 2014年 YouXianMing. All rights reserved.//#import "ViewController.h"#import "ChooseOnlyButton.h"@interface ViewController ()<ChooseOnlyButtonDelegate>{    ChooseOnlyButton *button;}@end@implementation ViewController- (void)viewDidLoad {    [super viewDidLoad];    UILabel *label      = [[UILabel alloc] initWithFrame:CGRectMake(0, 50, 320, 30)];    label.textAlignment = NSTextAlignmentCenter;    label.text          = @"学挖掘机哪家强?";    label.textColor     = [UIColor grayColor];    [self.view addSubview:label];        button                         = [[ChooseOnlyButton alloc] initWithFrame:CGRectMake(0, 100, 320, 400)];    button.buttonHeight            = 25.f;    button.gapFromLeft             = 10.f;    button.gapFromVerticalButton   = 20.f;    button.gapFromHorizontalButton = 10.f;    button.buttonTitleFont         = [UIFont systemFontOfSize:16.f];    button.titles                  = @[@"A. 蓝翔",                                       @"B. blueShit",                                       @"C. YouXianMing",                                       @"D. 不知道"];    button.delegate                = self;        [self.view addSubview:button];        // 设置完所有参数后创建出控件    [button resetSizeAndCreateButtons];}#pragma mark - 代理- (void)chooseButtonTitle:(NSString *)title {    NSLog(@"%@", title);    NSLog(@"%@", button.selectedTitle);}@end