build and run not working

while using build and run option getting this error i can take apk using build option

unity version : 2017.4.2f2
android sdk version : 27.0.2

 

can you build (without the "and run")
do you have the unity app?
is it running when you build and run?
have you selected "any android device connected" somewhere in the settings?(not sure where anymore, I just know what to look for)

if nothing else works, save everything, close everything down, open unity on android, then open your project
try again

 

i can take build but build and run is not working, will try opening the project in android and tell

 

Can you run "adb devices" in a command prompt?

 

no i didnt check that can you say how to check??

 

connect your phone to your computer with usb
open up your command prompt
cd to wherever your sdk is
type "adb devices"

 

Up! I've the same issue since I upgrade Unity and the sdk

 

i upgraded but didnt work

 

I'm seeing the same issue. Unity editor is able to see my connected device. An apk is built but the editor is failing to deploy to the device.

 

What does "adb devices" return? For me, it's located where I installed my AndroidSDK under /platform-tools/adb.exe

 

It returns the list of devices attached (which is only 1 device). Same install location as you.

 

Great! How about "adb install myfile.apk" ?

 

That command installed the apk with no issues.

 

The problem is that my USB connected device is still not registering with the Unity Profiler. Using the 'Build and Run' option has worked for me in the past.

 

Any additional info on the 'Build and Run' issue?

 

Fixed my issue by uninstalling and reinstalling the same Unity Version

 

this solution fixed it for me:
https://support.honeywellaidc.com/s/article/How-to-fix-adb-devices-shows-unauthorized-device