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我有两个 UIWebView，一个用于处理普通文件，一个用于处理 PDF（作为覆盖打开，位于另一个 Web 视图之上）。

两个 webview 的设置如下：

//Options for webView
webView.delegate = self;
webView.scalesPageToFit = YES;
for (id subview in webView.subviews)
    if ([[subview class] isSubclassOfClass: [UIScrollView class]])
        ((UIScrollView *)subview).bounces = NO;

//Options for pdfViewer
pdfViewer.delegate = self;
pdfViewer.scalesPageToFit = YES;
for (id subview in pdfViewer.subviews)
    if ([[subview class] isSubclassOfClass: [UIScrollView class]])
        ((UIScrollView *)subview).bounces = NO;

该行pdfViewer.delegate = self;给我的应用程序带来了一些麻烦。我有一个我正在使用的委托方法webViewDidFinishLoad，所以我需要delegate两个视图的self. 如果未设置，即我将其注释掉。PDF 在视图中加载，但webViewDidFinishLoad不会触发，如您所料。但是，如果我重新激活该行，PDF 根本不会加载到视图中。是否发生了某种冲突？我可以分配多个UIWebViews delegate = self吗？

更新：

#import "MyViewController.h"

@implementation MyViewController

@synthesize webView;

//these two just appear to show the page is loading.
@synthesize loadingView;
@synthesize linkLoadView;

//pdfViewer is contained within topView
@synthesize topView;
@synthesize pdfViewer;


- (void)viewDidLoad {
[super viewDidLoad];    

linkLoadView.alpha=0.0;
[topView removeFromSuperview];

//Options for 
webView.delegate = self;
webView.scalesPageToFit = YES;
for (id subview in webView.subviews)
    if ([[subview class] isSubclassOfClass: [UIScrollView class]])
        ((UIScrollView *)subview).bounces = NO;

//Options for 
//pdfViewer.delegate = self;
pdfViewer.scalesPageToFit = YES;
for (id subview in pdfViewer.subviews)
    if ([[subview class] isSubclassOfClass: [UIScrollView class]])
        ((UIScrollView *)subview).bounces = NO;

NSURL *filePath = [NSURL URLWithString:@"*webaddress*/index.html"];
NSURLRequest *requestObj = [NSURLRequest requestWithURL:filePath];
[webView loadRequest:requestObj];
}

- (BOOL) webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType;  {
    /* Add Content Loading Banner */
    if (navigationType == UIWebViewNavigationTypeLinkClicked) {
       [self.view addSubview:linkLoadView];
       linkLoadView.alpha = 1.0;
    }

    /* Handle PDF Opening */
    NSURL *url = [request URL];
    NSString *urlString = [url absoluteString];
    if([urlString rangeOfString:@".pdf"].location == NSNotFound){
        return true;
    } else {
        NSURL *filePath = [NSURL URLWithString:urlString];
        NSURLRequest *requestObj = [NSURLRequest requestWithURL:filePath];
        [pdfViewer loadRequest:requestObj];

        [self.view addSubview:topView];
        [self.view addSubview:linkLoadView];

        return false;
    }

}

- (void) webViewDidFinishLoad:(UIWebView *)theWebView{
    NSLog(@"Fired");    
}

@end
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1 回答 1

1

您是否覆盖 UIWebView 委托中的任何其他方法，例如 shouldLoadRequest 等....？

There is no issue with having a single delegate to multiple webviews so I am guessing that something is stopping the normal request process somewhere.

于 2011-04-06T09:27:58.090 回答