Android debugger not being able to connect to the process (app)

Question

I am using Android Studio 1.5 and currently working on a project. Whenever I am trying to debug or attach the debugger to the app I am working on to fix bugs, the debugger is NOT able to connect; therefore the app freezes on the android device. Note that it randomly works and connects properly some time to time (like 2 out 10 times). I get this error in the logs:

Error running Android Debugger (8600): Unable to open debugger port (localhost:8600): java.io.IOException "handshake failed - connection prematurally closed" 9:57:00 AM Error running Android Debugger (8600): Unable to open debugger port (localhost:8600): java.io.IOException "handshake failed - connection prematurally closed" 9:57:25 AM Adb connection Error:EOF 9:57:25 AM Connection attempts: 1

How can I fix this issue and be able to easily debug my app ? Thanks in advance.

Answer 1

You can try restarting adb. From Android Studio, click "Terminal" (bottom of screen). At the prompt enter: adb kill-server, then adb start-server. Try debugging again.

Answer 2

If none of the other solutions worked for you (as it didn't for me), I suggest to try to do a clean reinstall of the Platform tools.

1 - Start the standalone SDK Manager.

From Android Studio: Tools->Android->SDK manager, SDK Tools tab, click start standalone SDK manager.

2 - Close Android Studio.

3 - In SDK manager, in the Tools folder: check Android SDK Platform-Tools and click on the Delete packages button in bottom right corner.

4 - In Explorer, delete the folder android-sdk-path\platform-tools.

5 - Back in SDK manager: re-check Android SDK Platform-Tools and click on the Install packages button.

Answer 3

Whenever this happens to me, I just close the emulator or re-plug in my hardware device and Run the app. Android studio automatically restarts adb.

You can also try double clicking on adb in /android-sdk/platform-tools