ios 学习札记 细节（三）

本节纪录学习WebView的心得

1.包含web的controller遵从UIWebViewDelegate协议。

2.定义 UIWebView 与 URL

@property (nonatomic, strong) UIWebView *mainWebView;

@property (nonatomic, strong) NSURL *URL;

3.发送Web页面请求

- (void)loadView

{

    mainWebView = [[UIWebViewalloc] initWithFrame:[UIScreenmainScreen].bounds];

    mainWebView.delegate = self;

    mainWebView.scalesPageToFit = YES;

    [mainWebViewloadRequest:[NSURLRequestrequestWithURL:self.URL]];

    self.view = mainWebView;

}

4.实现代理部分

#pragma mark -

#pragma mark UIWebViewDelegate

- (void)webViewDidStartLoad:(UIWebView *)webView

{

    //打开菊花

    [[UIApplicationsharedApplication] setNetworkActivityIndicatorVisible:YES];

}

- (void)webViewDidFinishLoad:(UIWebView *)webView

{

    //关闭菊花

   [[UIApplicationsharedApplication] setNetworkActivityIndicatorVisible:NO];    

    self.navigationItem.title = [webView stringByEvaluatingJavaScriptFromString:@"document.title"];

}

- (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error

{

    [[UIApplicationsharedApplication] setNetworkActivityIndicatorVisible:NO];

}

5.加载本地html页面

假设工程目录下有1.html ,222.js,test1.css,iWebView是一成员变量：

UIWebView *iWebView;

//加载本地使用说明文件文件

-(void)loadDocument:(NSString *)docName 

{

    NSString *mainBundleDirectory=[[NSBundle mainBundle] bundlePath];

    NSString *path=[mainBundleDirectory stringByAppendingPathComponent:docName];

    

    NSURL *url=[NSURL fileURLWithPath:path];

    NSURLRequest *request=[NSURLRequestrequestWithURL:url];

    iWebView.scalesPageToFit=YES;

    [iWebViewloadRequest:request];

}

 使用的时候，直接调用：

[self loadDocument];

 

7.联网时候的菊花加载还可以参照以下：

http://www.cnblogs.com/zhuqil/archive/2011/07/28/2119923.html