UIWebView webViewDidFinishLoad没有被调用iOS [英] UIWebView webViewDidFinishLoad not getting called iOS
问题描述
我使用UIWebView从文档目录加载一些文件。我设置了UIWebView的委托,我回应两个委托的方法是
webViewDidStartLoad
和 webViewDidFinishLoad
我收到 webViewDidStartLoad
但我没有收到 webViewDidFinishLoad
方法。
I am loading some file from document directory using UIWebView. I have set the delegate of UIWebView and I am responding to 2 methods of delegate that is
webViewDidStartLoad
and webViewDidFinishLoad
I am receiving the webViewDidStartLoad
But I am not receiving webViewDidFinishLoad
method.
下面是代码:
@interface MyView: UIViewController <UIWebViewDelegate> {
UIWebView *webView;
}
@property (nonatomic, retain) UIWebView *webView;
========================= Class ===========================
-(void)viewDidLoad {
CGRect webFrame = [[UIScreen mainScreen] applicationFrame];
mWebView = [[UIWebView alloc] initWithFrame:webFrame];
mWebView.delegate = self;
mWebView.scalesPageToFit = YES;
[self.view addSubview:mWebView];
NSString *path = [documentsDirectory stringByAppendingPathComponent:[NSString stringWithFormat:@"%@", pathString]];
[mWebView loadRequest:[NSURLRequest requestWithURL:[NSURL fileURLWithPath:path]] ];
}
// Delegate methods
-(void)webViewDidStartLoad:(UIWebView *)webView {
NSLog(@"start");
}
-(void)webViewDidFinishLoad:(UIWebView *)webView {
NSLog(@"finish");
}
-(void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error {
NSLog(@"Error for WEBVIEW: %@", [error description]);
}
请让我知道发生了什么。我没有在didFailLoadWithError委托方法中得到任何错误。
Please let me know what is going wrong. I am not getting any error in didFailLoadWithError delegate method.
注意: - 我加载的文件是巨大的说3 MB。
Note:- the file that I am loading are huge say 3 MB.
感谢
============= EDITED == ================
=============EDITED==================
当我载入非常庞大的档案时,
As I was loading very huge File the delegate was coming after very long duration that I was not able to notice but for small files everything is working fine
推荐答案
可能你应该这样做,
-(void)viewDidLoad {
//webView alloc and add to view
CGRect webFrame = [[UIScreen mainScreen] applicationFrame];
mWebView = [[UIWebView alloc] initWithFrame:webFrame];
mWebView.delegate = self;
mWebView.scalesPageToFit = YES;
[self.view addSubview:mWebView];
//path of local html file present in documentsDirectory
NSString *path = [documentsDirectory stringByAppendingPathComponent:[NSString stringWithFormat:@"%@", pathString]];
//load file into webView
[mWebView loadRequest:[NSURLRequest requestWithURL:[NSURL fileURLWithPath:path]] ];
//show activity indicator
[self showActivityIndicator]
}
在以下UIWebViewDelegate方法中调用removeLoadingView方法
Call removeLoadingView method in the following UIWebViewDelegate methods
-(void)webViewDidFinishLoad:(UIWebView *)webView {
[self removeLoadingView];
NSLog(@"finish");
}
-(void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error {
[self removeLoadingView];
NSLog(@"Error for WEBVIEW: %@", [error description]);
}
showActivityIndicator方法
The showActivityIndicator method
-(void) showActivityIndicator
{
//Add a UIView in your .h and give it the same property as you have given to your webView.
//Also ensure that you synthesize these properties on top of your implementation file
loadingView = [UIView alloc] initWithFrame:[[UIScreen mainScreen] applicationFrame]]
loadingView.alpha = 0.5;
//Create and add a spinner to loadingView in the center and animate it. Then add this loadingView to self.View using
[self.view addSubView:loadingView];
}
removeLoadingView方法
The removeLoadingView method
-(void) removeLoadingView
{
[loadingView removeFromSuperView];
}
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