Detailed explanation of Network Status display of UIWebView

UIWebViewOfNetworkStatus display is described in this article.UIWebViewTo displayWebpageIt is very simple. You only needUIWebViewSend an NSURLRequest. But you will find that it is not user-friendly, because you do not know the current situation,WebpageWhether the file is being loaded or not. Mobile safari is very user-friendly, not only has blue progressbar, but also has a network activity indicator in the status bar.

We also need to add this feature to the application. Adding a network activity indicator is actually very simple. The Code is as follows:

 
 

  
  
- (void)showLoading    
  
  
{    
  
  
    [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:YES];    
  
  
    self.theActivityView.hidden = NO;    
  
  
    [self.theActivityView startAnimating];    
  
  
}    
  
  
- (void)hideLoading    
  
  
{   
  
  
    [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:NO];    
  
  
    self.theActivityView.hidden = YES;    
  
  
    [self.theActivityView stopAnimating];    
  
  
}    
  
  
- (void)webViewDidStartLoad:(UIWebView *)webView    
  
  
{    
  
  
    [self showLoading];    
  
  
    NSLog(@"start load");    
  
  
}    
  
  
- (void)webViewDidFinishLoad:(UIWebView *)webView    
  
  
{    
  
  
    [self hideLoading];    
  
  
    NSLog(@"finish load");    
  
  
}    
  
  
- (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error    
  
  
{    
  
  
    [self hideLoading];    
  
  
    NSLog(@"error load");    
  
  
}    
  
  
- (void)showLoading  
  
  
{  
  
  
 [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:YES];  
  
  
 self.theActivityView.hidden = NO;  
  
  
 [self.theActivityView startAnimating];  
  
  
}  
  
  
- (void)hideLoading  
  
  
{  
  
  
 [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:NO];  
  
  
 self.theActivityView.hidden = YES;  
  
  
 [self.theActivityView stopAnimating];  
  
  
}  
  
  
- (void)webViewDidStartLoad:(UIWebView *)webView  
  
  
{  
  
  
 [self showLoading];  
  
  
 NSLog(@"start load");  
  
  
}  
  
  
- (void)webViewDidFinishLoad:(UIWebView *)webView  
  
  
{  
  
  
 [self hideLoading];  
  
  
 NSLog(@"finish load");  
  
  
}  
  
  
- (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error  
  
  
{  
  
  
 [self hideLoading];  
  
  
 NSLog(@"error load");  
  
  
} 
 
 

TheActivityView is an instance of UIActivityIndicatorView. In this way, when the UIWebView is loadedWebpageThere will be an indicator in the status bar and a UIActivityIndicatorView in the UIWebView frame to showWebpageLoading.

After studying how to implement progressbar, no method is found yet. Because there are only a few delegate methods available for UIWebView, it does not help to display the progress bar. You can only find another method.

Summary: DetailsUIWebViewOfNetworkThe content of the Status display is complete. I hope this article will help you.