小编Mar*_*ith的帖子

我正在尝试在iOS 8及更高版本下运行时用WKWebView实例替换动态分配的UIWebView实例,我找不到确定WKWebView内容大小的方法.

我的Web视图嵌入在更大的UIScrollView容器中,因此我需要确定Web视图的理想大小.这将允许我修改其框架以显示其所有HTML内容,而无需在Web视图中滚动,并且我将能够为滚动视图容器设置正确的高度(通过设置scrollview.contentSize).

我尝试过sizeToFit和sizeThatFits但没有成功.这是我的代码,它创建一个WKWebView实例并将其添加到容器scrollview:

// self.view is a UIScrollView sized to something like 320.0 x 400.0.
CGRect wvFrame = CGRectMake(0, 0, self.view.frame.size.width, 100.0);
self.mWebView = [[[WKWebView alloc] initWithFrame:wvFrame] autorelease];
self.mWebView.navigationDelegate = self;
self.mWebView.scrollView.bounces = NO;
self.mWebView.scrollView.scrollEnabled = NO;

NSString *s = ... // Load s from a Core Data field.
[self.mWebView loadHTMLString:s baseURL:nil];

[self.view addSubview:self.mWebView];

这是一个实验性的didFinishNavigation方法:

- (void)webView:(WKWebView *)aWebView
                             didFinishNavigation:(WKNavigation *)aNavigation
{
    CGRect wvFrame = aWebView.frame;
    NSLog(@"original wvFrame: %@\n", NSStringFromCGRect(wvFrame));
    [aWebView sizeToFit];
    NSLog(@"wvFrame after sizeToFit: %@\n", NSStringFromCGRect(wvFrame));
    wvFrame.size.height = 1.0; …