Category: Code

• Create your own Xcode code snippets

  Using the Code Snippet Library from Xcode is very handy sometimes. However, the library consists only of a small amount of available code snippets. But you are not limited to them, rather than you can create your own code snippets for code patterns you are using very often.

  February 16, 2014

  Code

• Swipe gestures on UITableView

  User interactions on table cells don’t have to be necessarily restricted to simply scroll and tap them. However, with some additional code and the support of gesture recognizers introduced in iOS 3.2 you can give your users the possibility to swipe on your table view cells for exciting additional actions. A common task for that […]

  January 10, 2014

  Code

• Objective C HMAC-MD5

  Sometimes it is necessary to implement some cryptographic functions for security reasons within your iOS apps. In one of our projects I was faced with the problem of implementing some kind of a two-step registration/confirmation process with a iOS app and a corresponding server-side interface. We decided to implement this by using a generated confirmation […]

  January 10, 2014

  Code

• UIDatePicker and UIPickerView

  Sometimes it is necessary to adjust the color of the standard UIDatePicker  and UIPickerView  controls within your iOS application. Sadly the iOS SDK doesn’t support to change the background color or even the tint of these controls. A simple workaround for this is to create separate images and use them within an UIImageView  as your custom overlay.

  May 26, 2013

  Code

• iAd Integration

  Advertisements are another option to provide your iOS applications still for free but also to get some cash back for your work. Although ads are not that popular to app users Apple made a big hit with their new iAd network. I’d like to call iAd the next level of advertisement on mobile devices because […]

  January 30, 2013

  Code, Process

• iOS fade-in and fade-out Animation

  Today just a small code snippet to create a nice fade-in-fade-out (or call it pulsating) effect on a given UIImage . To accomplish this within a UIView  you have to do only a few steps: Create a UIImageView  containing your image. Create the animation with its properties. Set the animation for the specific layer containing your image.

  January 28, 2013

  Code

• A infinite/endless paging UIScrollView

  Infinity is a very powerful concept, so maybe my post title shouldn’t include this term. Anyway, I tried to create something similar to a infinite or endless paging scroll view. The idea is very simple: Create a view including a standard scroll view. Provide an interface to load views for each page on demand. Cache […]

  July 9, 2012

  Code

• Transparent UIToolBar

  Sometimes it is really necessary to have a transparent UIToolBar  within you iPhone app. Especially if you want to add a UIToolBar  to your UINavigationBar  you get some problems with overlaying backgrounds (UIBarStyleBlackOpaque  did not work for a toolbar on a black opaque navigation bar).

  July 8, 2012

  Code

• Custom Popover View

  The possibility to show popover views (modal or non modal) is a really cool thing within the new iPhone OS 3.2. It allows you to display important information, request some input from the user or present some kind of navigation structure. Anyway, it depends on your application but it helps to focus the user on […]

  April 9, 2012

  Code

• iPad split view application

  The split view is something very cool within the new iPhone OS 3.2. It allows us to visualize a master-detail view in a very simple manner. Combined with iPads’ big display of 1024×748 pixels it will be possible to create even better, more user-friendly and valuable applications.

  April 3, 2012

  Code