设计多选一按钮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
使用时候的源码:

//

// 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;

@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

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