iOS开发webView的使用二

            <span>#import</span>
            <span>"</span>
            <span>ViewController.h</span>
            <span>"</span>
            <span>@interface</span> ViewController ()<UIWebViewDelegate><span>
@property (weak, nonatomic) IBOutlet UIWebView </span>*<span>webView;
@property (weak, nonatomic) IBOutlet UIBarButtonItem </span>*<span>goBack;
@property (weak, nonatomic) IBOutlet UIBarButtonItem </span>*<span>goForward;

</span><span>@end</span><span>@implementation</span><span> ViewController

</span><span>#pragma</span> mark ----------------------
<span>#pragma</span> mark Life Cycle
- (<span>void</span><span>)viewDidLoad
{
    [super viewDidLoad];
    
    NSURL </span>*url = [NSURL URLWithString:<span>@"</span><span>http://www.baidu.com</span><span>"</span><span>];
    NSURLRequest </span>*request =<span> [NSURLRequest requestWithURL:url];
    
    </span><span>//</span><span>加载网页</span><span>    [self.webView loadRequest:request];
    
    </span><span>//</span><span>设置代理</span>
    self.webView.<span>delegate</span> =<span> self;
}

</span><span>#pragma</span> mark ----------------------
<span>#pragma</span> mark Events
- (IBAction)goBackBtnClick:(<span>id</span><span>)sender
{
    
    [self.webView goBack];
}
</span>- (IBAction)goForwardBtnClick:(<span>id</span><span>)sender
{
    [self.webView goForward];
    
}
</span>- (IBAction)reloadBtnClick:(<span>id</span><span>)sender
{
    [self.webView reload];
}

</span><span>#pragma</span> mark ----------------------
<span>#pragma</span> mark UIWebViewDelegate

<span>//</span><span>即将加载某个请求的时候调用</span>
-(BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *<span>)request navigationType:(UIWebViewNavigationType)navigationType
{
    NSLog(</span><span>@"</span><span>%@</span><span>"</span><span>,request.URL.absoluteString);
    </span><span>//</span><span>简单的请求拦截处理</span>
    NSString *strM =<span> request.URL.absoluteString;
    </span><span>if</span> ([strM containsString:<span>@"</span><span>360</span><span>"</span><span>]) {
        </span><span>return</span><span> NO;
    }
    </span><span>return</span><span> YES;
}

</span><span>//</span><span>1.开始加载网页的时候调用</span>
-(<span>void</span>)webViewDidStartLoad:(UIWebView *<span>)webView
{
    NSLog(</span><span>@"</span><span>webViewDidStartLoad</span><span>"</span><span>);
}

</span><span>//</span><span>2.加载完成的时候调用</span>
-(<span>void</span>)webViewDidFinishLoad:(UIWebView *<span>)webView
{
    NSLog(</span><span>@"</span><span>webViewDidFinishLoad</span><span>"</span><span>);
    
    self.goBack.enabled </span>=<span> self.webView.canGoBack;
    self.goForward.enabled </span>=<span> self.webView.canGoForward;
}

</span><span>//</span><span>3.加载失败的时候调用</span>
-(<span>void</span>)webView:(UIWebView *)webView didFailLoadWithError:(NSError *<span>)error
{
    NSLog(</span><span>@"</span><span>didFailLoadWithError</span><span>"</span><span>);
}

</span><span>@end</span>