IOS自定义RadioGroup

ewen321

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

Objective-C

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

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