Android Failed to install HelloWorld.apk on device (null) Error

Question

I am new to Android. When I am running my android application in eclipse I am getting these messages in the console:

[2011-03-08 12:57:35 - HelloWorld] ----         


        

Answer 1

What Jichao said always works for me.

Generally when I see this error if I am using Eclipse I will close and reopen the program. I will then uninstall the Application from the target phone. This sometimes fixes the issue but not always.

Next I will open up the command terminal and head into the android-sdk then run:

./adb install .apk

This does the same thing that running through Eclipse does but it will give you an error message.

(9 times out of 10 it simply says 'INSTALL_ALREADY_EXISTS' and I go and uninstall the application off the target phone again then run adb and I am working fine.)