1.scalesPageToFit设置为YES,这样web页面会根据屏幕大小进行自动缩放。
2.UIWebView的状态监视
//内容读入开始前被调用。将UIWebView,返回no后UIWebView不进行读入处理。如果想在单击链接时进行独自处理则处理
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType;
//内容读入开始后被调用
- (void)webViewDidStartLoad:(UIWebView *)webView;
//内容读入结束后被调用
- (void)webViewDidFinishLoad:(UIWebView *)webView;
//内容读入过程中错误发生后被调用。可多次调用
- (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error;
webViewController.h中的代码。
@interface webViewController : UIViewController<UIWebViewDelegate> { UIActivityIndicatorView *activityIndicatorView; } @property(nonatomic,strong) UIWebView * webView; @end
webViewController.m中的代码。
- (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view. self.title = @"明确显示通信状态"; //UIWebView的设置 _webView =[[UIWebView alloc]init]; _webView.delegate = self; _webView.frame = self.view.bounds; _webView.autoresizingMask = UIViewAutoresizingFlexibleHeight|UIViewAutoresizingFlexibleWidth; _webView.scalesPageToFit = YES; [self.view addSubview:_webView]; //工具条中添加活动指示器 activityIndicatorView = [[UIActivityIndicatorView alloc]init]; activityIndicatorView.frame = CGRectMake(0, 0, 20, 20); UIBarButtonItem *indicator = [[UIBarButtonItem alloc]initWithCustomView:activityIndicatorView]; UIBarButtonItem *adjustment = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil]; NSArray *buttons = [NSArray arrayWithObjects:adjustment,indicator,adjustment, nil]; [self setToolbarItems:buttons animated:YES]; } -(void)viewDidAppear:(BOOL)animated { [super viewDidAppear:animated]; //显示web页面 NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"http://www.baidu.com"]]; [_webView loadRequest:request]; } -(void)webViewDidStartLoad:(UIWebView *)webView { [activityIndicatorView startAnimating]; } -(void)webViewDidFinishLoad:(UIWebView *)webView { [activityIndicatorView stopAnimating]; } -(void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error { [activityIndicatorView stopAnimating]; UIAlertView * alerView = [[UIAlertView alloc]initWithTitle:@"网络问题" message:@"请检查网络" delegate:self cancelButtonTitle:@"删除" otherButtonTitles:@"确定", nil]; [self.view addSubview:alerView]; [alerView show]; }
网页显示UIWebView(一)
时间: 2024-10-10 13:56:15