React native failed to launch emulator

Question

While trying to test the android app am creating with React native, I run into this error

info Launching emulator...
error Failed to launch emulator. Reason: No emulators found as an output of `emulator -list-avds`.
warn Please launch an emulator manually or connect a device. Otherwise app may fail to launch.

I have the emulator(the AMD version) installed in the android studio.

How can I solve this problem

Answer 1

In your scenario before running react native application you need to create emulator using Android Studio. You can view official documentation about running application on device by here

Before running your project make sure you have installed adb drivers - More

First of all create AVD using Android Studio.

Open your project android folder using Android Studio.

1. Click AVD Manager from Android Studio
2. Click Create Virtual Device 3. Select your device from device list and click Next 4. Select the android os version from the available version list and click Next 5. On last keep default settings on device and click Finish

After that you can see your available android emulator device list from AVD Manager window.

* Before run your react native application make sure you have turn on and run the android emulator from android studio

After that run your project using react-native run-android