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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