首页 > 代码库 > IOS自定义RadioGroup

IOS自定义RadioGroup

2024-10-22 22:00:39   211人阅读

实现与android平台上相同的RadioGroup控件
//使用是只需要实现RadioGroup代理即可完成监听事件

[1].[图片] EBF2792E-4CB0-4318-B6B8-7CBA0E1E2DE5.png跳至 [1] [2]

技术分享

[2].[代码] Objective-C 跳至 [1] [2]

?
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
//RadioButton实现
#import <UIKit/UIKit.h>
#import <QuartzCore/QuartzCore.h>
#define RadioButton_WHeight 25
#define RadioButton_Space 5
typedef enum {
    CCRadioButtonAligmentLeft,  //图片在左方
    CCRadioButtonAligmentRight
}CCRadioButtonAligment;
@protocol  CCRadioButtonDelegate;
@interface CCRadioButton : UIControl
{
@private
    CCRadioButtonAligment _aligment;
    CGSize _textSize;
    //使用layer减少内存消耗
    CALayer *_imageLayer;
    CATextLayer *_labelLayer;
}
@property (nonatomic, strong) UIImage *image;   //图片
@property (nonatomic, strong) UIColor *textColor;  //字体颜色
@property (assign, nonatomic) id<CCRadioButtonDelegate> delegate;
@property (nonatomic, getter = isChecked, setter = setCheck:) BOOL check;
@property (nonatomic, strong) NSString *text;
- (id)initWithFrame:(CGRect)frame text:(NSString *)text aligment:(CCRadioButtonAligment)aligment isChecked:(BOOL)check;
- (void)setCheck:(BOOL)check;
@end
@protocol CCRadioButtonDelegate <NSObject>
- (void)onCheckedChanged:(CCRadioButton *)button;
@end
#import "CCRadioButton.h"
#import "CCUITool.h"
@implementation CCRadioButton
- (id)initWithFrame:(CGRect)frame text:(NSString *)text aligment:(CCRadioButtonAligment)aligment isChecked:(BOOL)check
{
    self = [super initWithFrame:frame];
    if (self) {
        self.backgroundColor = [UIColor clearColor];
        _check = check;
        _aligment = aligment;
        _text = text;
        /* 添加target */
        [self addTarget:self action:@selector(valueChanged) forControlEvents:UIControlEventTouchUpInside];
         //更具字的size 计算本控件的frame
        _textSize = [_text sizeWithFont:[CCUITool getDefaultFont:14] constrainedToSize:CGSizeMake(SCREEN_WIDTH, SCREEN_HEIGHT)];
        self.frame = CGRectMake(self.frame.origin.x, self.frame.origin.y, RadioButton_WHeight + _textSize.width + RadioButton_Space, RadioButton_WHeight > _textSize.height ? RadioButton_WHeight : _textSize.height);
    }
    return self;
}
- (void)drawRect:(CGRect)rect
{
    if (!_imageLayer && !_labelLayer) {
        _imageLayer = [CALayer layer];
        //计算_imageLayer 与_labelLayer 的frame
        _imageLayer.frame = _aligment == CCRadioButtonAligmentLeft ? CGRectMake(_textSize.width + 5, _textSize.height > RadioButton_WHeight ? (_textSize.height - RadioButton_WHeight)/2.0 : 0, RadioButton_WHeight, RadioButton_WHeight) : CGRectMake(0, _textSize.height > RadioButton_WHeight ? (_textSize.height - RadioButton_WHeight)/2.0 : 0, RadioButton_WHeight, RadioButton_WHeight);
        [self.layer addSublayer:_imageLayer];
        
        _labelLayer = [CATextLayer layer];
        _labelLayer.string = _text;
        _labelLayer.fontSize = 14;
        _labelLayer.frame = _aligment == CCRadioButtonAligmentLeft ? CGRectMake(0, _textSize.height > RadioButton_WHeight ? 0 : (RadioButton_WHeight - _textSize.height) / 2.0, _textSize.width, _textSize.height > RadioButton_WHeight ? _textSize.height : RadioButton_WHeight) : CGRectMake(RadioButton_WHeight+RadioButton_Space, (self.frame.size.height - _textSize.height)/2.0, _textSize.width, _textSize.height);
        [self.layer addSublayer:_labelLayer];
    }
    
    / *重新切换图片，字体颜色（选中为红色）*/
    _image = [UIImage imageNamed:_check ? @"radiobutton_checked" : @"radiobutton_normal"];
    _textColor = _check ? [UIColor redColor] : [CCUITool getDefaultTextColor];
    _imageLayer.contents = (id)_image.CGImage;
    _labelLayer.foregroundColor = _textColor.CGColor;
}
- (void)valueChanged
{
    if (!_check) {
        _check = !_check;
        if (_delegate && [_delegate respondsToSelector:@selector(onCheckedChanged:)]) {
            [_delegate onCheckedChanged:self];
        }
    }
}
- (void)setCheck:(BOOL)check
{
    _check = check;
    [self setNeedsDisplay];
}
@end
//RadioGroup实现
#import <UIKit/UIKit.h>
#import "CCRadioButton.h"
typedef enum {
    CCRadioGroupOrientationHorizental,  //RadioGroup水平放置
    CCRadioGroupOrientationVertical
}CCRadioGroupOrientation;
@protocol CCRadioGroupDelegate;
@interface CCRadioGroup : UIView<CCRadioButtonDelegate/*实现RadioButton代理 */>
{
@private
    NSMutableArray *_buttonArray;
    CCRadioButton *_currentButton;
}
@property (assign, nonatomic) NSUInteger checkedIndex;
@property (assign, nonatomic) id<CCRadioGroupDelegate> delegate;
- (id)initWithFrame:(CGRect)frame buttonTitle:(NSArray *)array orientation:(CCRadioGroupOrientation)orientation;
- (void)checkIndex:(NSUInteger)index;
- (CCRadioButton *)getCheckedRadioButton:(NSUInteger)checkId;
@end
#import "CCRadioGroup.h"
#import "CCUITool.h"
#import "CCRadioGroupDelegate.h"
@implementation CCRadioGroup
- (id)initWithFrame:(CGRect)frame buttonTitle:(NSArray *)array orientation:(CCRadioGroupOrientation)orientation
{
    self = [super initWithFrame:frame];
    if (self) {
        _buttonArray = [NSMutableArray array];
        CGFloat tempY = 0;
        for (int i = 0; i < array.count; i++) {
            CCRadioButton *radioButton = nil;
            switch (orientation) {
               case CCRadioGroupOrientationVertical:
                   radioButton = [[CCRadioButton alloc] initWithFrame:CGRectMake(0, tempY, 0, 0) text:[array objectAtIndex:i] aligment:CCRadioButtonAligmentRight isChecked:NO];
                   tempY += 10;
                   break;
               case CCRadioGroupOrientationHorizental:
                   radioButton = [[CCRadioButton alloc] initWithFrame:CGRectMake(i * self.frame.size.width/array.count, 0, 0, 0) text:[array objectAtIndex:i] aligment:CCRadioButtonAligmentRight isChecked:NO];
                   break;
            }
            radioButton.tag = i;
            if (i == 0) {
               _currentButton = radioButton;
            }
            radioButton.delegate = self;
            [self addSubview:radioButton];
            [_buttonArray addObject:radioButton];
        }
    }
    return self;
}
- (void)checkIndex:(NSUInteger)index
{
    _currentButton = [_buttonArray objectAtIndex:index];
    _currentButton.check = YES;
    _checkedIndex = index;
}
- (CCRadioButton *)getCheckedRadioButton:(NSUInteger)checkId
{
    return (CCRadioButton *)[_buttonArray objectAtIndex:checkId];
}
#pragma mark - CCRadioButtonDelegate
- (void)onCheckedChanged:(CCRadioButton *)button
{
    [_currentButton setCheck:NO];
    _currentButton = button;
    [_currentButton setCheck:YES];
    _checkedIndex = button.tag;
    if (_delegate && [_delegate respondsToSelector:@selector(onCheckedChanged:index:)]) {
        [_delegate onCheckedChanged:self index:button.tag];
    }
}
@end
//RadioGroup代理
#import <Foundation/Foundation.h>
@class CCRadioGroup;
@protocol CCRadioGroupDelegate <NSObject>
- (void)onCheckedChanged:(CCRadioGroup *)radioGroup index:(NSUInteger)checkId;
@end
//使用实例
NSArray *textArray = @[@"一月", @"半年", @"一年"];
    CCRadioGroup *radioGroup = [[CCRadioGroup alloc] initWithFrame:CGRectMake(5, 2, SCREEN_WIDTH - 10, DEFAULT_HEIGHTLB) buttonTitle:textArray orientation:CCRadioGroupOrientationHorizental];
    radioGroup.delegate = self;
//实现代理
- (void)onCheckedChanged:(CCRadioGroup *)radioGroup index:(NSUInteger)checkId
{
    NSLog(@"点击了 -- %@", [radioGroup getCheckedRadioButton:checkId].text);
}

IOS自定义RadioGroup


联系
我们