iOS开发UIWebView展示网页实例代码

iOS开发UIWebView展示网页实例代码

更多阅读请访问http://www.hopean.com

UIWebView是ios内置的浏览器控件，我们可以用它来浏览网页、打开文档等等。

代码如下

viewController.h

@interface ViewController : UIViewController<UIWebViewDelegate>
{
    UIWebView *webView;
    UIActivityIndicatorView *activityIndicatorView;
}
@end

viewController.m

- (void)viewDidLoad
{
    [super viewDidLoad];
	// Do any additional setup after loading the view, typically from a nib.
    webView = [[UIWebView alloc] initWithFrame:CGRectMake(0, 0, 320, 480)];
    webView.delegate = self;
    webView.scalesPageToFit = YES;
    [self.view addSubview:webView];
    activityIndicatorView = [[UIActivityIndicatorView alloc]
                             initWithFrame : CGRectMake(0.0f, 0.0f, 32.0f, 32.0f)] ;
    [activityIndicatorView setCenter: self.view.center] ;
    [activityIndicatorView setActivityIndicatorViewStyle: UIActivityIndicatorViewStyleGray] ;
    [self.view addSubview : activityIndicatorView] ;
    
    NSURL *url =[NSURL URLWithString:@"http://www.hopean.com"];
    NSURLRequest *request =[NSURLRequest requestWithURL:url];
    [webView loadRequest:request];
}
- (void)webViewDidStartLoad:(UIWebView *)webView
{
    [activityIndicatorView startAnimating] ;
}
- (void)webViewDidFinishLoad:(UIWebView *)webView
{
    [activityIndicatorView stopAnimating];
}

- (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error
{
    UIAlertView *alterview = [[UIAlertView alloc] initWithTitle:@"" message:[error localizedDescription]  delegate:nil cancelButtonTitle:nil otherButtonTitles:@"OK", nil];
    [alterview show];
    [alterview release];
}