ios UIPageControl 点颜色设置的总结

1、写一个继承UIPageControl类

2、重写UIPageControl的 setCurrentPage方法

3、修改当前点的颜色

code: 

#import

@interface CommonPageControl : UIPageControl

{

UIImage *activeImage;

UIImage *inactiveImage;

}

@end

#import "CommonPageControl.h"

@implementation CommonPageControl

- (id)initWithFrame:(CGRect)frame

{

self = [super initWithFrame:frame];

if (self) {

// Initialization code

}

return self;

}

-(void)updateDots{

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

if([(UIView *)[self.subviews objectAtIndex:i] isKindOfClass:[UIView class]]){//目前pageControl控件小点是一个view

UIView *dot=[self.subviews objectAtIndex:i];

if(i==self.currentPage){

dot.backgroundColor=[UIColor whiteColor];

}

else{

dot.backgroundColor = [UIColor colorWithRed:0/255.0 green:0/255.0 blue:0/255.0 alpha:0.1];

}

}

}

}

//重写基类方法

-(void)setCurrentPage:(NSInteger)currentPage{

[super setCurrentPage:currentPage];

[self updateDots];

}

@end

调用：

CGRect rect;

rect.origin.x = myScrollView.frame.origin.x;

rect.origin.y = self.frame.size.height-20;

rect.size.width = myScrollView.frame.size.width;

rect.size.height = 20;

myPagecontrol = [[CommonPageControl alloc] initWithFrame:rect];

myPagecontrol.userInteractionEnabled=NO;

[self.view addSubview:myPagecontrol];