Re-installation failed due to different application signatures [duplicate]

This question already has answers here: Closed 10 years ago.

Possible Duplicate:

Why does the app signature change in Android after a classpath change?

I started getting errors in my Eclipse Workspace for several but not all of my projects. I noticed is was the oldest projects. I found help for the error, and built my own debug.keystore and changed the java build path to that folder.

Now when I try to run any of the projects in an emulator I get this error:

[2011-04-19 10:11:20 - enga] Re-installation failed due to different application si开发者_运维百科gnatures.
[2011-04-19 10:11:20 - enga] You must perform a full uninstall of the application. WARNING: This will remove the application data!
[2011-04-19 10:11:20 - enga] Please execute 'adb uninstall com.engatest' in a shell.
[2011-04-19 10:11:20 - enga] Launch canceled!

I tried removing the application from the menu in the emulator, got through the motions and drag it to the trash but it doesn't get removed.

I tried running in terminal: adb uninstall com.dwclogic.engatest but the command wasn't found, adb probably not setup globally on my mac. I am new to the Mac and am unsure how to get the execute path for this fixed but that's an whole other issue.

where do I try running this command? Is there any other ways to fix this problem.

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1. You can remove an app in your emulator via Settings->Applications->manage Applications. There you can see a list of all installed apps. If you then click on the app you want to uninstall, a screen opens, with an uninstall option.
2. A second option for uninstall is the use of "adb uninstall". adb is a command line tool which is located under the Android SDK folder. You can find it there in a folder called "platform-tools". So you have to navigation to your SDK installation and use a terminal window to run adb there.

Dragging an icon onto the trash does not uninstall an app. It only removes it's icon from the home screen.

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I get that error when my physical device is hooked up in my PC's USB port. If yours is plugged in try to unplug it

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Go to Settings -> Application -> Manage Application -> "tab on your application" -> uninstall

Run your application from Eclipse again and it'll definitely work for you :)