iphone - PhoneGap/iOS，从 .shouldStartLoadWithRequest() 打开 ChildBrowser？

Question

我正在 PhoneGap 中打包一个移动网站(通过网络)，我想拦截指向 PDF 的链接并使用 ChildBrowser 打开它们插入。是否 1:可以从 native 代码触发 ChildBrowser(我已经确定要拦截哪些链接)和 2:是 AppDelegate.m, .shouldStartLoadWithRequest() 做对的地方？在那种情况下:3:如何从 native 代码正确调用 ChildBrowser？

我尝试过这种公认的幼稚方法:

return [self exec:@"ChildBrowserCommand.showWebPage",
      [url absoluteString]];

但它只会导致错误，如 ...'NSInvalidArgumentException', reason: '-[AppDelegate exec:]: unrecognized selector sent to instance。

(PS:我知道这种方法不是理想的做法，但这个项目的价格仅为 2 天的工作)

Answer 1

如果您在插件文件夹中添加(Child Browser)插件类，那么您必须使用 appDelegate.m 文件，#import "ChildBrowserViewController.h"
例如，您的 html 文件具有以下 html/javascript 代码，如下所示
window.location="http://xyz.com/magazines/magazines101.pdf";
要在子浏览器中执行此 url，您需要修改包含 pdf 扩展文件的请求 url 的原生 shouldStartLoadWithRequest: 方法。

/**
 * Start Loading Request
 * This is where most of the magic happens... We take the request(s) and process the response.
 * From here we can re direct links and other protocalls to different internal methods.
 */
- (BOOL)webView:(UIWebView *)theWebView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType
{
    //return [ super webView:theWebView shouldStartLoadWithRequest:request navigationType:navigationType ];
    NSURL *url = [request URL];
    if([request.URL.absoluteString isEqualToString:@"about:blank"])
        return [ super webView:theWebView shouldStartLoadWithRequest:request
                navigationType:navigationType ];
    if ([[url scheme] isEqualToString:@"gap"]) {
        return [ super webView:theWebView shouldStartLoadWithRequest:request
                navigationType:navigationType ];
    } else {
        NSString *urlFormat = [[[url path] componentsSeparatedByString:@"."] lastObject];
        if ([urlFormat compare:@"pdf"] == NSOrderedSame) {
            [theWebView sizeToFit];
            //This code will open pdf extension files (url's) in Child Browser
            ChildBrowserViewController* childBrowser = [ [ ChildBrowserViewController alloc ] initWithScale:FALSE ];
            childBrowser.modalPresentationStyle = UIModalPresentationFormSheet;
            childBrowser.modalTransitionStyle = UIModalTransitionStyleFlipHorizontal;   
            [super.viewController presentModalViewController:childBrowser animated:YES ];   
            NSString* urlString=[NSString stringWithFormat:@"%@",[url absoluteString]]; 
            [childBrowser loadURL:urlString];
            [childBrowser release];
            return NO;      
        } 
        else
            return [ super webView:theWebView shouldStartLoadWithRequest:request
                    navigationType:navigationType ];    
    } 
}

谢谢，
马约尔