转：自定义UIPageControl的indicator的image

转：自定义UIPageControl的indicator的image

创建：2012.03.01

转：来自F。

＝＝＝CustomPageControl.h＝＝＝

#import <Foundation/Foundation.h>

#import <UIKit/UIKit.h>

@interface CustomPageControl : UIPageControl {

    UIImage* imageNormal;

    UIImage* imageCurrent;

}

@property (nonatomic, retain) UIImage* imageNormal;

@property (nonatomic, retain) UIImage* imageCurrent;

@end

＝＝＝CustomPageControl.m＝＝＝

#import "CustomPageControl.h"

@interface CustomPageControl(Private)

- (void) updateDots;

@end

@implementation CustomPageControl

@synthesize imageNormal,imageCurrent;

/** override to update dots */

- (void) setCurrentPage:(NSInteger)currentPage

{

    [super setCurrentPage:currentPage];

    

    // update dot views

    [self updateDots];

}

/** override to update dots */

- (void) updateCurrentPageDisplay

{

    [super updateCurrentPageDisplay];

    

    // update dot views

    [self updateDots];

}

/** Override setImageNormal */

- (void) setImageNormal:(UIImage*)image

{

    [imageNormal release];

    imageNormal = [image retain];

    

    // update dot views

    [self updateDots];

}

/** Override setImageCurrent */

- (void) setImageCurrent:(UIImage*)image

{

    [imageCurrent release];

    imageCurrent = [image retain];

    

    // update dot views

    [self updateDots];

}

- (void) endTrackingWithTouch:(UITouch*)touch withEvent:(UIEvent*)event 

{

    [super endTrackingWithTouch:touch withEvent:event];

    

    [self updateDots];

}

#pragma mark -

#pragma mark updateDots

- (void) updateDots

{

    if(imageNormal || imageCurrent)

    {

        // Get subviews

        NSArray* dotViews = self.subviews;

        for(int i = 0; i < dotViews.count; ++i)

        {

            UIImageView* dot = [dotViews objectAtIndex:i];

            // Set image

            dot.image = (i == self.currentPage) ? imageCurrent : imageNormal;

        }

    }

}

#pragma mark-

#pragma mark dealloc

- (void) dealloc

{

    [imageNormal release];

    imageNormal = nil;

    [imageCurrent release];

    imageCurrent = nil;

    

[super dealloc];

}

@end

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