Android Studio 2.1.1: "no usb devices or running emulators detected"
Suddenly my Android Studio stopped detecting all my devices, none of them is working. It happen from one execution to another. I've changed a few lines of code (1 min maybe?), hit run (instant run) and then I missed all my devices.
I'm using a Mac and as devices: Nexus 5x, Galaxy s6 and Oneplus One. What can be happening? I've checked previous questions here and tried all this:
- Run configurations: no matter if I chose usb device or show the window, it does not work.
Tools > Android > Enable ADB integration: didn't help- Command line
adb devicesdoes not detect any either. - I've revoked and granted again USB authorizations. Still not working.
- I've tried other apps I have, none work.
- Restarted phones
- Restarted android studio
- Restarted computer
(Note: if I start an emulator it works, but I'd prefer to use physical device since I have to scan real barcodes)
Thanks a lot in advance.
Answer
On Lollipop 5.1
- Go to About Phone
- Click 7 times on Build Number. Now Developer options are enabled
- Go back and Click Developer options
- Enable USB debugging under Debugging.