加载网页——iOS学习连载28

- (instancetype)initWithNibName:(NSString
*)nibNameOrNil bundle:(NSBundle
*)nibBundleOrNil

{

self = [super
initWithNibName:nibNameOrNil
bundle:nibBundleOrNil];

if(self)

{

self.hidesBottomBarWhenPushed
=
YES;

}

return
self;

}

- (void)viewDidLoad {

[super
viewDidLoad];

//新建网页视图

webView = [[UIWebView
alloc]
initWithFrame:self.view.bounds];

//网页视图自适应屏幕尺寸

webView.scalesPageToFit
=
YES;

//设置代理

webView.delegate
=
self;

// //加载百度网页

// //创建request对象

// NSMutableURLRequest *mRequest = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"http://www.baidu.com"]];

//

// //网页控件加载一个网络请求

// [webView loadRequest:mRequest];

[self.view
addSubview:webView];

//初始化风火轮

UIActivityIndicatorView *activity = [[UIActivityIndicatorView
alloc]
initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhite];

UIBarButtonItem *rightBtn = [[UIBarButtonItem
alloc]
initWithCustomView:activity];

self.navigationItem.rightBarButtonItem
= rightBtn;

[self
_loadData];

}

//加载本地html网页

- (void)_loadData

{

NSString *filePath = [[NSBundle
mainBundle]
pathForResource:@"news"
ofType:@"html"];

NSError *error =
nil;

NSString *str = [NSString
stringWithContentsOfFile:filePath
encoding:NSUTF8StringEncoding
error:&error];

NSDictionary *dic = [DataServiece
requestData:news_detail];

NSString *title = [dic
objectForKey:@"title"];

NSString *source = [dic
objectForKey:@"source"];

NSString *time = [dic
objectForKey:@"time"];

NSString *content = [dic
objectForKey:@"content"];

NSString *author = [dic
objectForKey:@"author"];

NSString *htmlStr = [NSString
stringWithFormat:str,title,source,time,content,author];

[webView
loadHTMLString:htmlStr
baseURL:nil];

}

#pragma mark -UIWebViewDelegate

//将要加载某个请求

- (BOOL)webView:(UIWebView
*)webView shouldStartLoadWithRequest:(NSURLRequest
*)request navigationType:(UIWebViewNavigationType)navigationType

{

return
YES;

}

//已经开始加载

- (void)webViewDidStartLoad:(UIWebView
*)webView

{

UIActivityIndicatorView *activity = (UIActivityIndicatorView
*)self.navigationItem.rightBarButtonItem.customView;

[activity
startAnimating];

}

//结束加载

- (void)webViewDidFinishLoad:(UIWebView
*)webView

{

UIActivityIndicatorView *activity = (UIActivityIndicatorView
*)self.navigationItem.rightBarButtonItem.customView;

[activity
stopAnimating];

}

//加载出错

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

{

}