大家好...
我想更改 uipagecontroller 指示器(点)颜色...为此,我正在执行以下步骤。
使用 2 个方法创建名为 PageControl 的新类
1.- (void) setCurrentPage:(NSInteger)page
2.- (void) setNumberOfPages:(NSInteger)pages
- (void) setCurrentPage:(NSInteger)page
{
NSLog(@"setCurrentPage");
[super setCurrentPage:page];
NSString* imgActive = [[NSBundle mainBundle] pathForResource:@"activeimage" ofType:@"png"];
NSString* imgInactive = [[NSBundle mainBundle] pathForResource:@"inactive" ofType:@"png"];
for (NSUInteger subviewIndex = 0; subviewIndex < [self.subviews count]; subviewIndex++)
{
UIImageView* subview= [self.subviews objectAtIndex:subviewIndex];
if (subviewIndex == page)
[subview setImage:[UIImage imageWithContentsOfFile:imgActive]];
else
[subview setImage:[UIImage imageWithContentsOfFile:imgInactive]];
subview.frame = CGRectMake(subview.frame.origin.x, subview.frame.origin.y, 10,10);
}
}
- (void) setNumberOfPages:(NSInteger)pages
{
NSLog(@"setNumberOfPages");
[super setNumberOfPages:pages];
NSString* img = [[NSBundle mainBundle] pathForResource:@"inactive" ofType:@"png"];
for (NSUInteger subviewIndex = 0; subviewIndex < [self.subviews count]; subviewIndex++)
{
UIImageView* subview= [self.subviews objectAtIndex:subviewIndex];
[subview setImage:[UIImage imageWithContentsOfFile:img]];
subview.frame = CGRectMake(subview.frame.origin.x, subview.frame.origin.y, 10,10);
}
}
我已经有了一个带有页面控制和 ScrollView 的 View ...这里我正在做的是从 nib 中选择 uipagecontroller 并选择身份检查器并选择类名 PageControl(带有 2 种方法的新创建的类)它适用于滑动图像时更改颜色,但是,它不适用于单击页面控件以移至下一页...
我不知道我应该包含什么或者我犯了什么错误...请帮助我做到这一点...
谢谢...
最佳答案
如果您想在点击点时启用页面滚动,那么您需要首先将 xib 文件中的“值已更改”属性与您在代码中设置的操作相关联。
我已经在我的一个项目中实现了相同的功能,因此它肯定会起作用。
- (IBAction)changePage:(id)sender {
int page = pageControl.currentPage;
CGFloat pageWidth = scrollView.frame.size.width;
pageWidth = scrollView.frame.size.width;
pageControl.currentPage = page;
CGRect frame = scrollView.frame;
frame.origin.x = frame.size.width * page;
frame.origin.y = 0;
[scrollView scrollRectToVisible:frame animated:YES];
// Set the boolean used when scrolls originate from the UIPageControl. See scrollViewDidScroll: above.
}
干杯
关于iphone - uipagecontrol指示器(点)问题,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/4645031/