iOS开篇——UI之UIWebView

webView使用 loadRequest: 方法请求数据的加载

- (void)createWebView{
    //创建全屏大小的webView
    UIWebView * view = [[UIWebView alloc]initWithFrame:self.view.bounds];
    view.tag = 1;
    //创建一个网址对象
    NSURL * url = [NSURL URLWithString:@"http://www.baidu.com"];
    //网络请求
    NSURLRequest * request = [[NSURLRequest alloc]initWithURL:url];
    
    //用网络请求数据加载webView
    [view loadRequest:request];
    
    //添加一个导航栏按钮  作为网页的返回
    self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemBookmarks target:self action:@selector(webBack)];
    
    [self.view addSubview:view];
}


- (void)webBack{
    UIWebView * webView = [self.view viewWithTag:1];
    [webView goBack];
}

UIWebViewDelegate

- (void)webViewDidStartLoad:(UIWebView *)webView{
    NSLog(@"开始请求数据");
}
- (void)webViewDidFinishLoad:(UIWebView *)webView{
    NSLog(@"结束请求数据");
}
- (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error{
    NSLog(@"加载错误");
}

未完