Archive for February, 2011

Augmented Reality blues…

Currently I’ve been doing a lot of Augmented Reality work using Qualcomm’s SDK and incorporating Unity for Android. It’s been a fantastic blend of technologies and I’m finding myself more creative and inspired then I’ve been in a long…

Unfortunately there is a great deal of red-tape surrounding the SDK while it is still in beta. I can’t publish any work yet, and I can’t even put any video of it on the web without their permission…

All that aside, I’m exploring some amazing concepts and marveling at how quickly my work is coming together. Hopefully I’ll have some videos to show everyone soon…

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No, You Shut Up Games now has it’s own site

If you’ve been following along you know that I release my games under the name “No, You Shut Up Games”. Since I’m actually starting to make a name for myself and a little bit of money I’ve decided to make it into it’s own entity. www.noyoushutupgames.com.

I’ll still be updating this as my personal development blog, and that site will be more the official page for people to go to… that way they don’t have to wade through all the ramblings about hating facebook APIs or android clock cycles and whatnot. So, there we have it!

APK Could not be installed

I was inspired this past weekend and went through a personal coding marathon. While doing some experiments and making observations I accidentally stumbled on an idea for a new game. This game would be so inspiring that I had it 90% complete after 30 hours of coding (or roughly 2.5 days).

I spent the next two days tweaking it and showing it to people who’s opinions I respect and am getting ready to release it into the Google Marketplace tonight. ┬áIn Unity (as with all apps) you need to set up a Keystore and sign your application. This is standard practice and the only speedbump I ran into was needing to put the path to the jdk\bin directory in my system path…

I finally have Unity export my finished APK and attempt to install it on my phone. Everything appears to be going great. The installation bar is chugging away and then all of a sudden I am hit with an incredibly ambiguous error:

APK Could not be installed.

The only option was to hit “OK”…. really? No further explanation? I’ve installed this APK dozens of times and have never had a problem… what changed? I deleted the .apk and re-transferred it over. I rebuilt it several times in Unity but I kept getting hit with the same error: “APK Could not be installed.”

The answer turned out to be fairly simple. I changed the certificate when I signed the game, and Android prevents this as a security measure. All I had to do was uninstall my game from my phone and then install the new APK. Trying to “overwrite” the APK with a different certificate is what causes this error.

Should have been obvious, but for me it just wasn’t…