UIPageControl自定义点的颜色，图片

系统自带的UIPageControl，点的颜色单调，所以自定义一下。

#import <UIKit/UIKit.h>

@interface SJGreenControl : UIPageControl

{

UIImage*_activeImage;

UIImage*_inactiveImage;

}

@end

#import "SJGreenControl.h"

@implementation SJGreenControl

- (id)initWithFrame:(CGRect)frame

{

self = [superinitWithFrame:frame];

if (self) {

_activeImage= [UIImageimageNamed:@"btn_round_selected"];

_inactiveImage= [UIImageimageNamed:@"btn_round_unselected"];

   }

returnself;

}

- (void)updateDots

{

for(int i = 0; i< [self.subviewscount]; i++) {

UIImageView* dot = [self.subviewsobjectAtIndex:i];

if(i == self.currentPage){

           dot.image= _activeImage;

       }

else

           dot.image= _inactiveImage;

   }

}

- (void)setCurrentPage:(NSInteger)currentPage

{

   [supersetCurrentPage:currentPage];

   [selfupdateDots];

}

/*

// Only override drawRect: if you perform custom drawing.

// An empty implementation adversely affects performance during animation.

- (void)drawRect:(CGRect)rect

{

   // Drawing code

}

*/

@end