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Failed run android simulator : No connected devices!

See original GitHub issue

I try to run app on android simulator but failed

:app:installDebug FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:installDebug'.
> com.android.builder.testing.api.DeviceException: No connected devices!

Issue Analytics

State:
Created 8 years ago
Reactions:46
Comments:19 (2 by maintainers)

Top GitHub Comments

82reactions

idecommented, Sep 28, 2015

Launch the simulator and try running again.

74reactions

TheNotarycommented, May 23, 2016

Google brought me here, thought I’d share notes:

If you don’t have any devices listed from adb devices You’ll want to start by creating an Android Virtual Device image.

$  android create avd -n <name> -t <target> --abi default/x86_64

<name> can be anything, such as react, <target> should be one of the options produced by the below command…

$  android list targets

If that listing is empty, use the android command’s GUI to install a target platform and such.

When you have the platform, and the device, you can then boot the device with emulator:

$  emulator -avd <name>

Once booted, the command you were likely trying to run react-native run-android should produce the effect of a react mobile app running in your emulator window.

See: http://stackoverflow.com/questions/4974568/how-do-i-launch-the-android-emulator-from-the-command-line