iOS 关于webView的使用方法

关于webView的使用方法还是比较简单的。
直接上代码

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@interface ViewController () <UIWebViewDelegate>//使用代理 {     UIWebView *webView;     UIView *_coverView;     UIActivityIndicatorView *_activityIndicator;//风火轮 }   @end   @implementation ViewController   - (void)viewDidLoad {     [super viewDidLoad];           //获取当前屏幕的宽高     int ScreenHeight = [[UIScreen mainScreen] bounds].size.height;     int ScreenWidth = [[UIScreen mainScreen] bounds].size.width;           //获取状态栏的高度     CGRect statusBarRect = [[UIApplication sharedApplication] statusBarFrame];     int statusBarHeight = statusBarRect.size.height;           //设置状态栏的尺寸，位置     webView = [[UIWebView alloc] initWithFrame:CGRectMake(0, statusBarHeight, ScreenWidth, ScreenHeight - statusBarHeight)];     //设置请求的URL     NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"http://www.baidu.com"]];     [self.view addSubview:webView];     //设置webView的代理     webView.delegate = self;     //加载这个URL     [webView loadRequest:request];           //smallBgView     _coverView = [[UIView alloc] initWithFrame:CGRectMake(0, statusBarHeight, ScreenWidth, ScreenHeight - statusBarHeight)];     _coverView.backgroundColor = [UIColor blackColor];     _coverView.alpha = 0.5;           //Activity Indicator     _activityIndicator = [[UIActivityIndicatorView alloc] initWithFrame:CGRectMake((ScreenWidth - 30)/2 , (ScreenHeight - statusBarHeight - 30)/2, 30, 30)];     _activityIndicator.activityIndicatorViewStyle = UIActivityIndicatorViewStyleGray;     _activityIndicator.hidesWhenStopped = YES;     _activityIndicator.color = [UIColor whiteColor];     _activityIndicator.alpha = 1.0;     [_coverView addSubview:_activityIndicator];       }   //在webView开始加载时会调用该函数，我们在这里显示coverView - (void)webViewDidStartLoad:(UIWebView *)webView {     [self.view addSubview:_coverView];     [_activityIndicator startAnimating]; }   //在webView加载完毕时会调用该函数，我们在这里把coverView移除掉 - (void)webViewDidFinishLoad:(UIWebView *)webView {     [_coverView removeFromSuperview];     [_activityIndicator stopAnimating]; }

看下演示效果

放个demo，供大家联系
WebViewTest

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