[英]How to set scroll position on uiwebview
I want to go to specify line on my uiwebview loaded. 我想去加载我的uiwebview上的行。 I tried
我试过了
[webView stringByEvaluatingJavaScriptFromString:@"window.scrollTo(0.0, 100.0)"];
[webView stringByEvaluatingJavaScriptFromString:@“window.scrollTo(0.0,100.0)”];
but it's not working. 但它不起作用。 My webview still start with top of the page.
我的网页浏览仍然从页面顶部开始。 I just wonder its because I load the
UIWebview
inside UIView
. 我只是想知道它,因为我在
UIView
加载了UIWebview
。 Check my code below on my UIView
: 在我的
UIView
上查看下面的代码:
- (void)loadView {
webview = [[WebViewDetail alloc]initWithFrame:[UIScreen mainScreen].applicationFrame]; //initialize a mainView is a UIWebVIew
webview.managedObjectContext = self.managedObjectContext;
webview.kitab = self.kitab;
webview.currentPasal = self.pasal;
self.title = [NSString stringWithFormat:@"%@ %d", self.kitab, webview.currentPasal];
self.view=webview; //make the mainView as the view of this controller
}
and I put the scroll positioning script on my UIWebView
: 我把滚动定位脚本放在我的
UIWebView
:
- (void)webViewDidFinishLoad:(UIWebView *)webView
{
int height = [[webView stringByEvaluatingJavaScriptFromString:@"document.body.offsetHeight;"] intValue];
NSString* javascript = [NSString stringWithFormat:@"window.scrollBy(0, %d);", height];
[self stringByEvaluatingJavaScriptFromString:javascript];
}
in this case I want to put my uiwebview go to the bottom of the page when the view is loaded. 在这种情况下,我想在加载视图时将我的uiwebview放到页面底部。 But it's totally not working, why?
但它完全不起作用,为什么? Am I doing it wrong?
我做错了吗?
尝试
webview.scrollView.contentOffset = CGPointMake(0, 100);
Make sure you set the view controller where you have your web view to be a UIWebViewDelegate
, and declare this in the @interface
of the header file (.h). 确保将视图控制器设置为
UIWebViewDelegate
,并在头文件(.h)的@interface
中声明。
[yourWebView setDelegate:self];
Then, in the webViewDidFinishLoad:
method, insert this code: 然后,在
webViewDidFinishLoad:
方法中,插入以下代码:
[yourWebView.scrollView scrollRectToVisible:CGRectMake(0, yourWebView.bounds.size.height + 100, 1, 1) animated:NO];
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