我正在尝试开发一种杂志类型的iPad应用程序,并遇到内存问题。 UIScrollView上有多个UIWebView-s。每个UIWebView都显示html文件源中的每个html页面。不幸的是,我找不到解决方案来处理Web视图,以便在应用程序加载后在后台平滑地加载它们,而不是加载并使用所有JavaScript和图像触发每个HTML页面,因为我希望它们一次都可见我在他们身上滑过,我在30个面板上收到“收到内存警告”消息,应用程序中断。UIScrollView上的多个UIWebView-
我用它来显示网页视图的代码是这样的:
NSInteger numberOfViews = 47;
for (int i = 0; i < numberOfViews; i++) {
CGFloat yOrigin = i * 768;
DetailViewController *detailViewController2 = [[DetailViewController alloc] initWithNibName:@"Detail" bundle:nil];
[detailViewController2.view setFrame:CGRectMake(yOrigin, 0, 768, 1024)];
detailViewController2.view.clipsToBounds = YES;
[scroll.view insertSubview:detailViewController2.view atIndex:0];
}
scroll.scrollView.contentSize = CGSizeMake(768 * numberOfViews,1004);
scroll.pageControl.numberOfPages = numberOfViews;
self.view.clipsToBounds = YES;
self.view.clearsContextBeforeDrawing = YES;
CGRect frame;
frame.origin.x = scroll.scrollView.frame.size.width * scroll.pageControl.currentPage;
frame.origin.y = 0;
frame.size = scroll.scrollView.frame.size;
[scroll.scrollView scrollRectToVisible:frame animated:NO];
self.scrollViewController = scroll;
[self.view insertSubview:scroll.view atIndex:0];
- (void)dealloc {
[scrollViewController release];
[tableOfContentsViewController release];
[portrait release];
[tableOfContents1 release];
[start release];
[super dealloc];
}
显示HTML内容的代码是DetaildViewController内:
NSString *htmlPath = [[NSBundle mainBundle] pathForResource:htmlfilename
ofType:@"html"
inDirectory:@"/htdocs" ];
NSString *html = [NSString stringWithContentsOfFile:htmlPath
encoding:NSUTF8StringEncoding
error:nil];
web.delegate = self;
[web setMultipleTouchEnabled:YES];
[web loadHTMLString:html
baseURL:[NSURL fileURLWithPath:
[NSString stringWithFormat:@"%@/htdocs/",
[[NSBundle mainBundle] bundlePath]]]];
- (void)dealloc {
//---release the memory used by the property---
[page release];
[web setDelegate:nil];
[web stopLoading];
[web release];
[orientation release];
[page release];
[super dealloc];
}
的问题是我怎么能加载它们顺利地在UIScrollView的背景中,并且只有在面板反弹到视口中时才会触发javascripts,我计划使用其html页面显示60多个网页浏览量?
你有链接到苹果视频回收网站的意见? – 2014-01-17 17:35:07