Android Device Chooser -- Device Not Showing Up

Android Device Chooser -- device not showing up

I think this was because the option for USB debugging wasn't checked on the device

Why is Eclipse's Android Device Chooser not showing my Android device?

I just had the same issue with the Motorola Droid. I had 3 devices and only 1 was detected in the ADB. The one that worked showed up in device manager as "android adb composite interface" and the 2 that did not work showed up as "android adb interface". In Windows 7 I did the following.

Right Click Computer then Manage
Expand Android phone at the top of the list
Right click Android ADB Interface then Update Driver Software
Browse my computer for driver software
Let me pick from a list of device drivers on my computer
Choose USB Composite Device then next

If USB Composite Device doesn't show up then try browsing to the usb_driver folder in your android sdk directory for step 5 then try step 5 and 6 again.

Note : If Android does not appear at the top of this list as described in #2 and/or you find a device ADB with no drivers then you probably need to install the device driver, which in my case (HTC Glacier) was located right on my phone.

Device chooser dialog is not showing up after instant run

This behaviour is clearly a shortcoming that's going to be fixed in subsequent releases, there's an open issue at AOSP.

Right now I found two workarounds that don't require studio restart or killing the adb process:

Force close the app on the device you have the ongoing instant-run session. This way the session will be closed and you will be asked to choose the device after next run.
Press the "debug" button if you've pressed the "run" button before and vice versa. For some reason, changing from run to debug or from debug to run forces AS to close the instant run session.