ios怎麽 wkwebview自適應寬高

方法1：獲取webview中scrovllview的contentsize進行設置

-(void)webViewDidFinishLoad:(UIWebView

*)webView{

CGFloat

webViewHeight=[webView.scrollView

contentSize].height;

CGRect

newFrame

=

webView.frame;

newFrame.size.height

=

webViewHeight;

webView.frame

=

newFrame;

}

方法2：執行js語句 直接獲取html文檔的dom高度

-(void)webViewDidFinishLoad:(UIWebView

*)webView{

CGFloat

webViewHeight=

[[webView

stringByEvaluatingJavaScriptFromString:

@"document.body.offsetHeight"]floatValue];

// CGFloat webViewHeight= [[webView

stringByEvaluatingJavaScriptFromString:

@"document.body.scrollHeight"]floatValue];

CGRect

newFrame

=

webView.frame;

newFrame.size.height

=

webViewHeight;

webView.frame

=

newFrame;

}

方法3.先將UIWebView的高度設為最小，然後再使用sizeThatFits就會返回剛好合適的大小

-(void)webViewDidFinishLoad:(UIWebView

*)webView{

CGSize

actualSize

=

[webView

sizeThatFits:CGSizeZero];

CGRect

newFrame

=

webView.frame;

newFrame.size.height

=

actualSize.height;

webView.frame

=

newFrame;

}

方法4.遍歷webview子視圖 獲取UIWebDocumentView高度即實際高度

Objective-C

-(void)webViewDidFinishLoad:(UIWebView

*)webView{

CGFloat

webViewHeight

=

0.0f;

if

([webView.subviews

count]

>

0)

{

UIView

*scrollerView

=

webView.subviews[0];

if

([scrollerView.subviews

count]

>

0)

{

UIView

*webDocView

=

scrollerView.subviews.lastObject;

if

([webDocView

isKindOfClass:[NSClassFromString(@"UIWebDocumentView")

class]])

{

webViewHeight

=

webDocView.frame.size.height;//獲取文檔的高度

webView.frame=

webDocView.frame;

//更新UIWebView 的高度

}

}

}

}

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