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Editorial Team
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Asked: 2026-05-19T23:57:46+00:00

I have created an app and it runs successfully in the emulator. When I

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I have created an app and it runs successfully in the emulator. When I was trying to run it in any of my devices it shows the following error:

[2011-02-12 09:57:06 - FirstImage] Android Launch!
[2011-02-12 09:57:06 - FirstImage] adb is running normally.
[2011-02-12 09:57:06 - FirstImage] Performing com.gis.image.FirstImage activity launch
[2011-02-12 09:57:23 - FirstImage] Uploading FirstImage.apk onto device 'HT96WKF01291'
[2011-02-12 09:57:32 - FirstImage] Installing FirstImage.apk...
[2011-02-12 09:57:52 - FirstImage] Re-installation failed due to different application signatures.
[2011-02-12 09:57:52 - FirstImage] You must perform a full uninstall of the application. WARNING: This will remove the application data!
[2011-02-12 09:57:52 - FirstImage] Please execute 'adb uninstall com.gis.image' in a shell.
[2011-02-12 09:57:52 - FirstImage] Launch canceled!

What is the issue and how can I overcome it?

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1 Answer

  1. Editorial Team

    You have installed this .apk before, and it was compiled using a different signature (see here for details). To fix this you need to remove the previous installation (you have to do that only when the signature has changed – not normally).

    On the device itself, go Menu->Settings->Manage Applications. Select the application which you want to Uninistall, and click on the ‘Uninstall’ button. Now try your install.

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