UIWebView加载Loading...两种方法
第一种方法:使用UIView and UIActivityIndicatorView
- //创建UIWebView
- WebView = [[UIWebView alloc] initWithFrame:CGRectMake(0, 44, 320, 400)];
- [WebView setUserInteractionEnabled:NO];
- [WebView setBackgroundColor:[UIColor clearColor]];
- [WebView setDelegate:self];
- [WebView setOpaque:NO];//使网页透明
- NSString *path = @"http://www.baidu.com";
- NSURL *url = [NSURL URLWithString:path];
- [WebView loadRequest:[NSURLRequest requestWithURL:url]];
- //创建UIActivityIndicatorView背底半透明View
- UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0, 0, 320, 480)];
- [view setTag:103];
- [view setBackgroundColor:[UIColor blackColor]];
- [view setAlpha:0.8];
- [self.view addSubview:view];
- activityIndicator = [[UIActivityIndicatorView alloc] initWithFrame:CGRectMake(0.0f, 0.0f, 32.0f, 32.0f)];
- [activityIndicator setCenter:view.center];
- [activityIndicator setActivityIndicatorViewStyle:UIActivityIndicatorViewStyleWhite];
- [view addSubview:activityIndicator];
- [self.view addSubview:WebView];
- [view release];
- [WebView release];
- //开始加载数据
- - (void)webViewDidStartLoad:(UIWebView *)webView {
- [activityIndicator startAnimating];
- }
- //数据加载完
- - (void)webViewDidFinishLoad:(UIWebView *)webView {
- [activityIndicator stopAnimating];
- UIView *view = (UIView *)[self.view viewWithTag:103];
- [view removeFromSuperview];
- }
第二种方法:使用UIAlertView and UIActivityIndicatorView
- //加载网页动画
- - (void)webViewDidStartLoad:(UIWebView *)webView{
- if (myAlert==nil){
- myAlert = [[UIAlertView alloc] initWithTitle:nil
- message: @"数据加载中..."
- delegate: self
- cancelButtonTitle: nil
- otherButtonTitles: nil];
- UIActivityIndicatorView *activityView = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhite];
- activityView.frame = CGRectMake(120.f, 48.0f, 37.0f, 37.0f);
- [myAlert addSubview:activityView];
- [activityView startAnimating];
- [myAlert show];
- }
- }
- - (void)webViewDidFinishLoad:(UIWebView *)webView{
- [myAlert dismissWithClickedButtonIndex:0 animated:YES];
- }
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