网页显示UIWebView(一)

发布时间:2017-09-09 10:37:17
网页显示UIWebView(一)

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 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 -(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];




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