设计多选一按钮ChooseOnlyButton
效果:
源码:
ChooseOnlyButton.h 与 ChooseOnlyButton.m
//
// 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;
}
@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以下是需要注意的地方:
超高的可定制性
