UIWebView获得内容的高－作出自适应高的UIWebView + WebView中点击链接返回 

1 - (void)webViewDidFinishLoad:(UIWebView *)webView
2 {    
3 NSString *height_str= [webView stringByEvaluatingJavaScriptFromString: @"document.body.offsetHeight"];
4     int height = [height_str intValue];
5     webView.frame = CGRectMake(0,0,320,height);
6     NSLog(@"height: %@", [webView stringByEvaluatingJavaScriptFromString: @"document.body.offsetHeight"]);
7 }

 点击返回

 1 //你是想点击链接实现页面的返回
 2 
 3 [self.navigationController popViewControllerAnimated:YES];
 4 
 5 //还是想点击上面的返回键，回到网页的上一页
 6 
 7 
 8 -(id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil {
 9 if (self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]) {
10 // 下一个界面的返回按钮
11     UIBarButtonItem *temporaryBarButtonItem = [[UIBarButtonItem alloc] init];
12     temporaryBarButtonItem.title = @"back";
13     temporaryBarButtonItem.target = self;
14     temporaryBarButtonItem.action = @selector(back:);
15     self.navigationItem.backBarButtonItem = temporaryBarButtonItem;
16 
17 }
18 
19 return self;
20 
21 }
22 
23 
24 -(void) back
25 {
26     if ([webView canGoBack]) {
27         [webView goBack];    
28     }
29    else
30     {
31         [self.navigationController popViewControllerAnimated:YES];
32 
33     }
34 } 
35 
36 //补充上面的，你要想点击链接返回
37 - (void)webViewDidFinishLoad:(UIWebView *)webView {
38 
39         if ([webView.request.URL isEqual: @"你的链接地址"]) {
40            [self.navigationController popViewControllerAnimated:YES];
41         }
42          
43 }

 

 
 
posted @ 2014-10-24 15:46  lxl奋小斗  阅读(169)  评论(0)  编辑  收藏  举报