Can't find android device using “adb devices” command

Question

I am developing Android application on macOS and my application runs well on the emulator. I want to run it on the device, but when I run adb dev

Answer 1

make sure you have same / higher API level installed on SDK packages with your devices.

example :

I have Android 2.3.4 on my Xperia Play. ADB wouldn't detect my device if theres only API 10 (Android 2.3.3) installed on my Mac. When i installed SDK 11 (Android 3.0) -- since I didn't found any SDK package for 2.3.4, the ADB working fine.

hope this help you.

Answer 2

restart the adb server works for me, in emulator, vmwware and virtual

adb kill-server
adb start-server

if you´re using a virtual machine, make sure you have an IP assigned with:

Alt + 1
type: netcfg

to go back:

Alt + 7

if you have:

 eth0: DOWN 0.0.0.0/XX

change your configuration to:

NAT or BRIDGE

Restart the virtual machine and server, and tried again.

if you´re using a phone or tablet:

• unplug your device

• wait a moment and plug it again

• and restart the adb server

Hope this help you

Answer 3

I was having this problem. It turns out my fix was to change the USB cable I was connecting with. I switched back to using the cable that came with the phone and it worked.

Using Samsung Galaxy Player and Samsung micro USB.

Yes. This is incredibly dumb.

Answer 4

I had Xamarin installed and tried to use Unity. Basically in any case you have to kill any application that might be talking to your device through ADB