App Not Installed error

android, apk, eclipse

Solution

An unsigned application cannot be installed. You should sign it with jarsigner tool (provided by Android SDK tools)

The important points to understand about signing Android applications are:

- All applications must be signed. The system will not install an application on an emulator or a device if it is not signed.

See http://developer.android.com/tools/publishing/app-signing.html

Problem

I have created an unsigned apk for my nexus 7. When I try and install it, the device pops up with, "App Not Installed". In the Eclipse emulator everything works fine. I have tried to alter my target to 4.2,4.3,4.4. Again, all work in the emulator but not on the device, the device is running 4.3.

Original source

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