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Multi-touch on the T-Mobile Android G1

Android developer, Luke Hutch, demonstrates that the  T-Mobile G1 display hardware is multi-touch enabled.

The demonstration is shown using an unmodified kernel. That’s good news!  Unfortunately, the events aren’t making it past a user-interface class in the phones Java stack.   Luke edited the class to enable the events to pass through.  The results of which can be seen in this video:

The behavior should be sufficient for most simple applications, like scaling, but there are some limitations, as the screen is not designed for multi-touch. The capacitance grid is not a 2-dimensional touch screen, but rather a “2x 1-dimensional” touch screen. Luke does a great job explaining this in the video.

Luke’s great technical writeup and source code can be found here:

http://lukehutch.wordpress.com/android-stuff/

via Gizmodo

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This entry was posted on Tuesday, January 13th, 2009 at 6:03 pm and is filed under Uncategorized. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

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