UIWebView是开发中很常用的应用内调用网页浏览的控件,这里整理了一些iOS中UIWebView网页加载组件的基础及使用技巧实例 ,需要的朋友可以参考下
基本用法示例
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
UIWebView * webView = [[UIWebView alloc]initWithFrame:CGRectMake(0, 20, ScreenWidth, ScreenHeight-20)];
// 自动队页面进行缩放以适应屏幕
webView.scalesPageToFit = YES;
webView.userInteractionEnabled = YES;
webView.opaque = YES;
[self.view addSubview:webView];
NSURL * url = [NSURL URLWithString:@"http://www.easck.com// NSString * myHT = @"优酷";
// [webView loadHTMLString:myHT baseURL:url];
/*
[webView goBack]; // 返回
[webView goForward]; // 前往
[webView reload];
[webView stopLoading];
*/
webView.delegate = self;
//移除滚动后的外边阴影
UIScrollView *scrollView = webView.scrollView;
for (int i = 0; i < scrollView.subviews.count ; i++) {
UIView *view = [scrollView.subviews objectAtIndex:i];
if ([view isKindOfClass:[UIImageView class]]) {
view.hidden = YES ;
}
}
}
#pragma mark - UIWebViewDelegate
- (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType{
/**
* typedef NS_ENUM(NSInteger, UIWebViewNavigationType) {
* UIWebViewNavigationTypeLinkClicked,
* UIWebViewNavigationTypeFormSubmitted,
* UIWebViewNavigationTypeBackForward,
* UIWebViewNavigationTypeReload,
* UIWebViewNavigationTypeFormResubmitted,
* UIWebViewNavigationTypeOther
};
*/
NSLOG_FUNCTION;
return YES;
}
// 开始加载
- (void)webViewDidStartLoad:(UIWebView *)webView{
NSLOG_FUNCTION;
}
// 完成加载
- (void)webViewDidFinishLoad:(UIWebView *)webView{
NSLOG_FUNCTION;
}
// 加载失败,弹出错误提示
- (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error{
UIAlertView *alterview = [[UIAlertView alloc] initWithTitle:@"" message:[error localizedDescription]
delegate:nil cancelButtonTitle:nil otherButtonTitles:@"OK", nil];
[alterview show];
[alterview release];
NSLOG_FUNCTION;
}
以下是关于它的一些使用技巧：
1.让网页适应手机屏幕宽度
如果用UIWebView显示一些pc站的网页，会发现网页会超出屏幕，显得很不好看，这时可以在webViewDidFinishLoad这个代理里面通过js添加一个meta：
