IOS自定义RadioGroup
浏览数：16 /
时间：2015年06月11日
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
[2].[代码] Objective-C 跳至 [1] [2]
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//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);
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