Could not install the app on the device, read the error above for details.
Make sure you have an Android emulator running or a device connected and have
set up your Android development environment:
https://facebook.github.io/react-native/docs/android-setup.html
是因為clone了項目,而android下的gradlew無執行(X)權限。
解決:
cd android
chmod +x gradlew