Tag / iphone development

Here are some tips for retina display 1. Since iPhone 4 uses points instead of pixels, the only thing you need to do is bake all the images to double resolution (For Example: 140 x 140 image should be blown up to 280 x 280) 2. Rename all your high resolution images as {image_name}@2x.png Here is a small shell script that will help you do that in a folder #!/bin/bash for i in *.png do mv $i ${i%.*}@2x.png done 3. Add both low resolution and high resolution images to as resources to your project. 4. Use the low resolution images as you normally do for any project 5. iPhone...

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I finally got some time to play with GameKit today and it is pretty simple to establish connectivity between two devices over bluetooth. All you need to understand are 2 classes. GKPeerPickerController and GKSession You could create your own interface for establishing connection between 2 devices, but Apple provides a nice interface via the GKPeerPickerController As with the Map Kit and other frameworks supported by Apple, they use the powerful delegate pattern to accomplish communication between the devices. As such there are two delegates you need to make yourself familiar with....

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I got some time to play with some more Map Kit stuff today. And I was able to add annotations. UPDATE: Follow the 3rd part here. http://blog.objectgraph.com/index.php/2009/04/08/iphone-sdk-30-playing-with-map-kit-part-3/ There are a couple of classes to be familiar with MKMapView This is our main class that displays a map. It inherits from UIView, so you can just initialize it and add it to your MainView MKPinAnnotationView This view is helpful if you would not like to subclass the MKAnnotationView, It provides a basic pin annotation with interaction enabled MKReverseGeoCoder This...

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UPDATE: Follow the second part here http://blog.objectgraph.com/index.php/2009/04/03/iphone-sdk-30-playing-with-map-kit-part-2/ I started looking at the Map Kit API for developing a quick and dirty - Find where you parked your car - application. There is no programming guide for Map Kit yet on the developer pages for Apple, So I decided to share some some of it here. The main class that supports a Map is called MKMapView You need to include the header MapKit/MapKit.h Also dont forget to add a reference to the Framework MapKit.Framework The code is relatively simple. Here...

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Just finished learning about the viewport metatag and implemeted this for dictionary on iPhone. Usage: Just type a few words and click on the reference. http://www.objectgraph.com/dictionary/iphone.html

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