iOS 混合開發 —— WebView 問題技巧

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1、圖片太大

- (void)webViewDidFinishLoad:(UIWebView *)webView {  NSString *js = @"function imgAutoFit() {      var imgs = document.getElementsByTagName(‘img‘);      for (var i = 0; i < imgs.length; ++i) {        var img = imgs[i];           img.style.maxWidth = %f;        }   }";  js = [NSString stringWithFormat:js, [UIScreen mainScreen].bounds.size.width - 20];    [webView stringByEvaluatingJavaScriptFromString:js];  [webView stringByEvaluatingJavaScriptFromString:@"imgAutoFit()"];}

　　

2、內容高度

通過JS來擷取高度：document.body.offsetHeight;

#pragma mark - UIWebViewDelegate- (void)webViewDidFinishLoad:(UIWebView *)webView {  CGFloat height = [[webView stringByEvaluatingJavaScriptFromString:@"document.body.offsetHeight;"] intValue];  if (self.webViewHeight != height && self.count <= 3) {    self.webViewHeight = height;    self.count++;        [self updateUI];  }}- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType {  self.webViewHeight = webView.scrollView.contentSize.height;  return YES;}

　　

 

iOS 混合開發 —— WebView 問題技巧