UIPageControl小圆点设置图片

NS_CLASS_AVAILABLE_IOS(2_0) @interface UIPageControl : UIControl {

  @private

    NSMutableArray* _indicators;

    NSInteger       _currentPage;

    NSInteger       _displayedPage;

    struct {

        unsigned int hideForSinglePage:1;

        unsigned int defersCurrentPageDisplay:1;

    } _pageControlFlags;

    UIImage*        _currentPageImage;

    UIImage*        _pageImage;

}

- (UIPageControl *)pageControl{

    if (_pageControl == nil) {

        _pageControl = [[UIPageControl alloc]init];

        _pageControl.backgroundColor = [UIColor whiteColor];

        [_pageControl setValue:[UIImage imageNamed:@"compose_keyboard_dot_normal@2x"] forKey:@"_pageImage"];

        [_pageControl setValue:[UIImage imageNamed:@"compose_keyboard_dot_selected@2x"] forKey:@"_currentPageImage"];

       [self addSubview:_pageControl];

    }

    return _pageControl;

}