获取UIWebView内容的高度 [英] Get UIWebView content's Height
问题描述
我有一个uiwebview，它使用loadHtmlString函数加载数据.事情是我从sqlite数据库加载数据，每次我加载长度不同的不同字符串时，Web视图自然会获得不同的高度.现在，我需要每次都知道uiwebview的确切高度，以便在webView下方加载imageView. 我尝试过
I have a uiwebview that loads data using the loadHtmlString function.The thing is i am loading the data from an sqlite database, each time i load a different string with different length and naturally the web view obtains different height.
Now i need to know each time the exact height of the uiwebview in order to load an imageView right under the webView.
I have tried
- (void)webViewDidFinishLoad:(UIWebView *)aWebView {
CGRect frame = aWebView.frame;
frame.size.height = 1;
aWebView.frame = frame;
CGSize fittingSize = [aWebView sizeThatFits:CGSizeZero];
frame.size = fittingSize;
aWebView.frame = frame;
NSLog(@"Size: %f, %f", fittingSize.width, fittingSize.height);
}
但是我总是得到相同的结果.我需要知道每次加载时如何动态获取Web视图的高度.谢谢
but i always get the same result. I need to know how can i get dynamically the height of web view each time it is loaded. Thx
推荐答案
这不是处理这种情况的正确方法；而不是将图像加载到图像视图中，而必须始终牢记高度和宽度以及所有这些东西……最简单，最可靠的解决方案就是将图像加载到html字符串中，仅此而已！只需确保baseURL如此，无论您采用哪种方向，一切都可以:
This wasn't the right approach to handle this situation; instead of loading the image in an image view and having to keep always in mind the height and width and all that stuff...The easiest and most reliable solution was just to load the image inside the html string and that's it ! Just be sure of the baseURL as so and everything will be ok no matter what orientation you take :
NSString* extension = @"gif";
NSString* strRR = [NSString stringWithFormat:@"%@.%@", authorNAme2,extension];
NSString *path = [[NSBundle mainBundle] bundlePath];
//NSLog(@"This is the path %@", path);
NSURL *baseURL = [NSURL fileURLWithPath:path];
// NSLog(@"this is the base URL %@",baseURL);
NSString *cachePath = [NSString stringWithFormat:@"%@/%@", path,strRR];
NSString * htmlString = [NSString stringWithFormat:@"\
<html>\
<table width='100%%'>\<tr>\<td>\
<body>\
<p style = 'font-size:30px;'> %@ <\p>\
</td></tr><tr><td><br></td></tr><tr><td align ='center'><br><img src='%@' width='60%%' \></td></tr></body>\
</table>\
</html>",authorNAme , cachePath];
// NSString *selection = [WebV2 stringByEvaluatingJavaScriptFromString:@"window.getSelection().toString()"];
// NSLog(@"*/*/*/*/**/*/*/*/*/*/*//*/ This is your selection mate %@" , selection);
WebV.opaque = NO;
WebV.backgroundColor = [UIColor clearColor];
[self.WebV setScalesPageToFit:YES];
[self.WebV loadHTMLString:htmlString baseURL:baseURL];
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