ios自定义checkbox

//Author：smilelance

//From：http://blog.csdn.net/smilelance

#import <UIKit/UIKit.h>

@interface PDECheckBox : UIButton

{

    BOOL isChecked;

}

- (id)initWithCenter:(CGPoint)center;

- (BOOL)isChecked;

- (void)setCheckState:(BOOL)checked;

- (void)switchCheckState;

@end

#import "PDECheckBox.h"

#define IMAGE_CHECKED @"checkbox_gray_sel.png"

#define IMAGE_UNCHECKED @"checkbox_gray.png"

@implementation PDECheckBox

- (id)initWithFrame:(CGRect)frame

{

    self = [super initWithFrame:frame];

    if (self) {

        // Initialization code

    }

    return self;

}

- (id)initWithCenter:(CGPoint)center

{

//    UIImage *imgChecked = [UIImage imageNamed:IMAGE_CHECKED];

    UIImage *imgUnChecked = [UIImageimageNamed:IMAGE_UNCHECKED];

    CGSize size = imgUnChecked.size;

    CGRect frame = CGRectMake(center.x-size.width/2, center.y-size.height/2, 

                              size.width, size.height);

    self = [super initWithFrame:frame];

    if (self) {

        // Initialization code

        [selfsetImage:imgUnChecked forState:UIControlStateNormal];

        isChecked = NO;

        [selfaddTarget:selfaction:@selector(switchCheckState)forControlEvents:UIControlEventTouchUpInside];

    }

    return self;

}

- (BOOL)isChecked

{

    returnisChecked;

}

- (void)switchCheckState

{

    [selfsetCheckState:!isChecked];

}

- (void)setCheckState:(BOOL)checked

{

    if (checked != isChecked) {

        isChecked = checked;

        if (isChecked) {

            [selfsetImage:[UIImageimageNamed:IMAGE_CHECKED]forState:UIControlStateNormal];

        }else {

            [selfsetImage:[UIImageimageNamed:IMAGE_UNCHECKED]forState:UIControlStateNormal];

        }

    }

}

@end