UI中的网页加载

- (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view. self.title = @"图片新闻"; //新建网页视图 webView = [[UIWebView alloc]initWithFrame:self.view.bounds]; //网页视图自适应屏幕尺寸 webView.scalesPageToFit = YES; //设置代理 webView.delegate = self; [self.view addSubview:webView]; //加载百度// //创建request对象// NSMutableURLRequest *mResquest = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"http://www.baidu.com"]];// //网页控件加载一个// [webView loadRequest:mResquest]; //初始化风火轮 UIActivityIndicatorView *ac = [[UIActivityIndicatorView alloc]initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhite]; UIBarButtonItem *rightItem = [[UIBarButtonItem alloc]initWithCustomView:ac]; self.navigationItem.rightBarButtonItem = rightItem; [self _loadData];}- (void)_loadData{ NSString *filePath = [[NSBundle mainBundle]pathForResource:@"news" ofType:@"html"]; NSError *error = nil; NSString *str = [NSString stringWithContentsOfFile:filePath encoding:NSUTF8StringEncoding error:&error]; NSDictionary *jsonData = [ReturnJson showJson:news_detail]; NSString *title = [jsonData objectForKey:@"title"]; NSString *source = [jsonData objectForKey:@"source"]; NSString *time = [jsonData objectForKey:@"time"]; NSString *author = [jsonData objectForKey:@"author"]; NSString *content = [jsonData objectForKey:@"content"]; NSString *htmlStr = [NSString stringWithFormat:str,title,source,time,content,author]; [webView loadHTMLString:htmlStr baseURL:nil];}#pragma mark-UIWebViewDelegate//开始加载- (void)webViewDidStartLoad:(UIWebView *)webView{ UIActivityIndicatorView *ac = (UIActivityIndicatorView *)self.navigationItem.rightBarButtonItem; [ac startAnimating];}//结束加载- (void)webViewDidFinishLoad:(UIWebView *)webView{ UIActivityIndicatorView *ac = (UIActivityIndicatorView *)self.navigationItem.rightBarButtonItem; [ac stopAnimating];}//加载出错- (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error{ }- (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated.}