Objective-C在UIWebView中进行Ajax调用后获取HTML值

Question

I want to get div value that gets created after an HTML button click in UIWebView .

But the issue is that the webpage gets loaded once and after the HTML button ajax call , it doesn't get loaded again in the UIWebView , so how do I access the div value that gets generated after the ajax call?

Following is the html code:

<a class="btn_class" params="{ &quot;container&quot;: &quot;betInfoTabReceipts&quot;, &quot;onComplete&quot;: &quot;ajaxOnCompleteTabs&quot;, &quot;onLoading&quot;: &quot;ajaxOnLoadTabs&quot;}" action="/some.something" onclick="$P('place_bet', {&quot;action&quot;: this.getAttribute('action'), &quot;params&quot;: this.getAttribute('params'), &quot;confirm&quot;: &quot;true&quot;}); return false;" id="btn_id" href="#"></a>

Following is the objective-c code:

    - (void)webViewDidFinishLoad:(UIWebView *)webView
{
    if([webView.request.URL.absoluteString isEqualToString:@"http://myurl.com/"])
    {
//some code that executes only once
}
}

How do I solve this?

Answer 1

You can execute this javascript code when webview didFinishLoading delegate method called. Like this [webView stringByEvaluatingJavaScriptFromString:@""] Then you will get ajax based request callbacks

var s_ajaxListener = new Object();
s_ajaxListener.tempOpen = XMLHttpRequest.prototype.open;
s_ajaxListener.tempSend = XMLHttpRequest.prototype.send;
s_ajaxListener.callback = function () {
    window.location='mpajaxhandler://' + this.url;
};

XMLHttpRequest.prototype.open = function(a,b) {
    if (!a) var a='';
    if (!b) var b='';
    s_ajaxListener.tempOpen.apply(this, arguments);
    s_ajaxListener.method = a;
    s_ajaxListener.url = b;
    if (a.toLowerCase() == 'get') {
        s_ajaxListener.data = b.split('?');
        s_ajaxListener.data = s_ajaxListener.data[1];
    }
}

XMLHttpRequest.prototype.send = function(a,b) {
    if (!a) var a='';
    if (!b) var b='';
    s_ajaxListener.tempSend.apply(this, arguments);
    if(s_ajaxListener.method.toLowerCase() == 'post')s_ajaxListener.data = a;
    s_ajaxListener.callback();
}