首先创建UIWebView,然后定义前进、后退、刷新按钮,并且需要实现UIWebViewDelegate方法
1.后退按钮事件
-(IBAction)WebViewBack:(id)sender
{
if([self.webview canGoBack]){
[self.webview goBack];
}
}
2、前进按钮事件
-(IBAction)WebViewForward:(id)sender
{
if([self.webview canGoForward])
[self.webview goForward];
}
3.刷新事件
-(IBAction)WebViewRefresh:(id)sender
{
[self.webview reload];
}
4.UIWebViewDelegate代理方法webViewDidFinishLoad
-(void)webViewDidFinishLoad:(UIWebView *)webView1
{
NSString *title = [webView1 stringByEvaluatingJavaScriptFromString:@"document.title"];
_webviewTitleLabel.text=title;
if(![webView1 canGoBack])
{
_btnWebviewGoBack.enabled=NO;
}
else
{
_btnWebviewGoBack.enabled=YES;
}
if(![webView1 canGoForward])
{
_btnWebviewGoForward.enabled=NO;
}
else
{
_btnWebviewGoForward.enabled=YES;
}//在webView加载完成后判断当前是否可以前进或后退,以决定后退键和前进键是否可用
[_indicator stopRotateAnimation];//停止旋转刷新的图片
[_loadingView stopAnimating_LoadingView];//停止LoadingView的旋转
}
5.UIWebViewDelegate代理方法webViewDidStartLoad
-(void)webViewDidStartLoad:(UIWebView *)webView
{
[_indicator startAnimating];//开始旋转刷新的图片
[_loadingView startAnimating_LoadingView];//开始LoadingView的旋转
}