Archives for May2011

ContentBundle demo updated

I’ve updated the demo app for the ContentBundle application. The application now presents a UIWebView showing HTML from the ZIP file.

An Update button causes the app to reach out to the server and reload the page.

The screenshots below show the app before and after updating:

Read More

We love you, Grand Rapids, MI

What a great rebuttal to being put on Newsweek’s list of “dying cities”…

window.external.Notify in iOS UIWebView

I recently ran into an interesting problem working on putting support for the Windows Azure Access Control Service (ACS) into the Windows Azure iOS Toolkit.

It turns out that once you’ve gone through all of the ACS authentication process, a security token is generated. You need this token to authenticate yourself against ACS-bound web sites. However the ACS web site passes the token to you by calling window.external.Notify()


While window.external.Notify is supported in Internet Explorer on the desktop and also in Windows Phone, it is not supported in iOS. Worse, while the WebView control on the Mac can call your Objective C code from JavaScript, the iOS UIWebView does not support this.

Another mechanism was needed. Here is how I solved it.

Read More

Web updates of content in iOS apps

One common use for mobile apps is to expose a company’s repertoire of content.

Perhaps your app will present cooking recipes, or First Aid information for folks that hurt themselves hiking far from cell tower coverage.

One challenge often faced in these types of apps is how to keep the content up to date. Of course you could simply ship an update to your app, but your customers may get annoying having to update your app every few weeks.

A better way is to have a means to update the content as it changes. The code I am presenting here is designed to do just that.

Read More