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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