Cocoa：获取WebView的标题

Question

I make a simple webview to user share with twitter and would like to know:

How can a get the title from a webview and put in on a string...

Answer 1

Set your web view's frameLoadDelegate and implement the webView:didReceiveTitle:forFrame: method:

- (void)webView:(WebView *)sender didReceiveTitle:(NSString *)title forFrame:(WebFrame *)frame
{
    if (frame == [myWebView mainFrame]) {
        NSLog(@"Title: %@", title);
        //...
    }
}

Answer 2

NSString *title = [webView stringByEvaluatingJavaScriptFromString:@"document.title"];

Answer 3

Use -(NSString *)mainFrameTitle method. this method Return The HTML title of the loaded page. Returns @"" if the loaded document is not HTML.

Answer 4

Set your WebView's resourceLoadDelegate. It will be called every time there is a request:

webView:resource:didReceiveResponse:fromDataSource:

the datasource has a pageTitle property. Use this.

This is preferable to polling for mainFrameTitle.