create-react-native-app: Error staring Android emulator

Please make our job easier by filling this template out to completion. If you’re requesting a feature instead of reporting a bug, please feel free to skip the Environment and Reproducible Demo sections.

Description

yarn run android failed with below error message:

Error running adb: Error running app. Error: Activity not started, unable to resolve Intent { act=android.intent.action.VIEW dat=exp://192.168.1.10:19000 flg=0x10000000 }

(node:572) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 1): TypeError: Cannot read property ‘length’ of null

Expected Behavior

What action did you perform?

1. Create a sample project using create-react-native-app command
2. open the android emulator (tried with Android Studio and Genymotion, both failed)
3. run yarn run android in the project folder

and what did you expect to happen?

I expect the the project can be loaded by simulator.

Observed Behavior

What actually happened when you performed the above actions?

I got below errors messages:

If there’s an error message, please paste the full terminal output and error message in this code block:

To view your app with live reloading, point the Expo app to this QR code.
You'll find the QR scanner on the Projects tab of the app, under the '+' menu.
Or enter this address in the Expo app's search bar:

  exp://192.168.1.10:19000

Your phone will need to be on the same local network as this computer.

For links to install the Expo app, please visit https://expo.io.

Logs from serving your app will appear here. Press Ctrl+C at any time to stop.

Error running adb: Error running app. Error: Activity not started, unable to resolve Intent { act=android.intent.action.VIEW dat=exp://192.168.1.10:19000 flg=0x10000000 }

(node:572) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 1): TypeError: Cannot read property 'length' of null

Environment

Please run these commands in the project folder and fill in their results:

• npm ls react-native-scripts:

rn_android@0.1.0 C:\Users\x\trunk\rn_android -- react-native-scripts@0.0.22

• npm ls react-native: rn_android@0.1.0 C:\Users\x\trunk\rn_android -- react-native@0.42.3

• npm ls expo:

rn_android@0.1.0 C:\Users\x\trunk\rn_android -- expo@15.1.2

• node -v: v6.9.4
• npm -v: 4.1.1
• yarn -v: yarn install v0.21.3

Also specify:

1. Operating system: Windows Home
2. Phone/emulator/simulator & version: Android Studio 2.2.3

Reproducible Demo

If you’re able, please provide a minimized reproducible demonstration of the problem you’re reporting.

Issues that come with minimal repro’s are resolved much more quickly than issues where a maintainer has to reproduce themselves.