Can't find android device using “adb devices”

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 devices I get nothing.

localhost:platform-tools BF$ adb devices 
List of devices attached 

localhost:platform-tools BF$

I have checked the documentation in the reference about "Setting up a Device for Development". I have done everything step by step.

In the documentation, there are some words: Setup your system to detect your device. If you're developing on Mac OS X, it just works. Skip this step.

Now, I can't find any solution. Does it need special drivers for Android Devices?

Answer 1

I know this thread is old, but I think this could still help. Almost all the time "it just works" on OS X, but sometimes new/prototype or obscure devices aren't picked up. Try to help it out with these steps (I'm not near my Mac right now, but I did this last night and think I remember):

1 - Open System Profiler and find the device on USB. View it's details to find the Vendor ID. For example, Motorola devices will show 0x2bb8. Or just Google for your vendor's hardware id.

If nothing shown, make sure to try different cables. Android File Transfer is good for detecting the device if you have a valid cable.

2 - Edit ~/.android/adb_usb.ini to include that Vendor ID. If the file doesn't exist, create it with that line only.

3 - Restart ADB

adb kill-server 
adb start-server

4 - Maybe unplug/plugin your phone.

And hopefully you see your device.

Answer 2

If adb devices does not list the device though you have plugged it in to the system, you need to ensure that USB debugging option is checked in the Developer Options tab under Settings. Under Android 4.2.2 and above (from what I have observed), the Developer Options are hidden unless explicitly revealed. To make Developer Options active, tap 7 times on the Settings > About device > Build number. Once done, go back to Settings > Developer Options and activate USB Debugging.

Using adb version 1.0.31, I was able to make the device visible.

Answer 3

The same problem I had on Windows 7. It happened that I was using USB tethering feature alongwith trying to use adb. There are some workarounds for this Usb tether and debug at the same time

Answer 4

Just because your Android device is in Developer Mode, doesn't mean it has USB debugging enabled!! Go into Settings > Developer options then enable "USB debugging" and then you should see your device. It's a common mistake that's easily overlooked.

Answer 5

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 6

Referenced from this link!

THIS IS FOR A MAC ONLY!

Here’s what you need to do to make your phone visible to adb:

1. Open terminal (Applications/Utilities/Terminal)
2. cd /System/Library/Extensions/IOUSBFamily.kext/Contents/PlugIns/IOUSBCompositeDriver.kext/Contents
3. sudo nano Info.plist (or vi, or emacs, or whatever console editor you prefer)
4. Copy the IOUSBComposite section (from <key> to </dict>)
5. Paste the section in at line 66 (right after where it appears) so you have 2 copies in the file
6. Change the bDeviceSubClass value from 0 to 2
7. Change the key name from IOUSBComposite to GW620

---

The end result should look something like this:

                    <key>GW620</key>
                    <dict>
                            <key>CFBundleIdentifier</key>
                            <string>com.apple.driver.AppleUSBComposite</string>
                            <key>IOClass</key>
                            <string>IOUSBCompositeDriver</string>
                            <key>IOProviderClass</key>
                            <string>IOUSBDevice</string>
                            <key>bDeviceClass</key>
                            <integer>0</integer>
                            <key>bDeviceSubClass</key>
                            <integer>2</integer>
                    </dict>

---

8. sudo diskutil repairpermissions / and let it finish
9. sudo touch /System/Library/Extensions and wait a few mins for the extension reindexing to finish
10. adb devices should now see your phone

Note, this is VERY kludgy, and will probably break every time OSX updates itself, but it works. I can finally stop rebooting every time I want to work on the phone! :D