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IOS本身沒(méi)有系統(tǒng)的CheckBox組件，但是實(shí)際開(kāi)發(fā)中會(huì)經(jīng)常用到，所以專(zhuān)門(mén)寫(xiě)了一個(gè)CheckBox控件，直接上代碼

效果圖：

UICheckBoxButton.h文件如下：

#import

#import "Common.h"

@interface UICheckBoxButton : UIControl

{

UILabel *label;

UIImageView *icon;

BOOL checked;

id delegate;

}

@property (retain, nonatomic) id delegate;

@property (retain, nonatomic) UILabel *label;

@property (retain, nonatomic) UIImageView *icon;

-(BOOL)isChecked;

-(void)setChecked: (BOOL)flag;

@end

UICheckBoxButton.m文件如下：

#import "UICheckBoxButton.h"

@implementation UICheckBoxButton

@synthesize label,icon,delegate;

- (id)initWithFrame:(CGRect)frame {

if ( self = [super initWithFrame: frame])

{

icon =[[UIImageView alloc] initWithFrame: CGRectMake (0, 0, frame.size.height, frame.size.height)];

[self setChecked:NO];

[self addSubview: icon];

label =[[UILabel alloc] initWithFrame: CGRectMake(icon.frame.size.width + 7, 0,

frame.size.width - icon.frame.size.width - 10,

frame.size.height)];

label.backgroundColor =[UIColor clearColor];

label.textAlignment = UITextAlignmentLeft;

[self addSubview:label];

[self addTarget:self action:@selector(clicked) forControlEvents: UIControlEventTouchUpInside];

}

return self;

}

-(BOOL)isChecked {

return checked;

}

-(void)setChecked: (BOOL)flag {

if (flag != checked)

{

checked = flag;

}

if (checked)

{

[icon setImage: [UIImage imageNamed:@"checkBoxSelect.png"]];

}

else

{

[icon setImage: [UIImage imageNamed:@"checkBoxNoSelect.png"]];

}

}

-(void)clicked {

[self setChecked: !checked];

if (delegate != nil)

{

SEL sel = NSSelectorFromString (@"checkButtonClicked");

if ([delegate respondsToSelector: sel])

{

[delegate performSelector: sel];

}

}

}

-(void)dealloc {

delegate = nil;

[label release];

[icon release];

[super dealloc];

}

@end

使用方法：

UICheckBoxButton *checkBoxButton = [[ UICheckBoxButton alloc] initWithFrame: CGRectMake(30, 50, 220, 25)];

checkBoxButton.delegate = self.delegate;

checkBoxButton.label.text = [Common getTextByTag:@"noCostPrompt"];

checkBoxButton.label.textColor = [Common getColorByTag:@"alertLabelcolor"];

[self.view addSubview:checkBoxButton];

[checkBoxButton release];

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