QuickTip – QTCreator – debugging signed android application

While working on Android application using QTCreator, i have got strange debugger error.

Application was compiled, signed, and properly deployed on my test Android phone. But debugger did not want to start.

Logs shows repeated lines:

I/Qt JAVA (23201): DEBUGGER: go to sleep
I/Qt JAVA (23201): DEBUGGER: Waiting for debug socket connect

Google wasn’t helpful. But after long hours of tests, i found a solution.

Looks like QTCreator handle Android’s manifest „debuggable” flag by itself. But flag is not generated, when application is signed.

If you want to debug signed application. Add android:debuggable=”true” flag into manifest’s tag.