How to create android app from project?

Questions
1

I’m using framework7 with webpack. For producing android app, i run following command:-
npm run build-dev-cordova.
It produces following error:-
npm ERR! missing script: build-dev-cordova
while scripts in package.json file are:-

"scripts": {
"start": "npm run dev",
"dev": "cross-env NODE_ENV=development webpack-dev-server --config ./build/webpack.config.js",
"build-dev": "cross-env NODE_ENV=development node ./build/build.js",
"build-prod": "cross-env NODE_ENV=production node ./build/build.js",
"build-dev-cordova": "cross-env TARGET=cordova cross-env NODE_ENV=development node ./build/build.js && cd cordova && cordova build",
"build-prod-cordova": "cross-env TARGET=cordova cross-env NODE_ENV=production node ./build/build.js && cd cordova && cordova build",
"build-dev-cordova-ios": "cross-env TARGET=cordova cross-env NODE_ENV=development node ./build/build.js && cd cordova && cordova build ios",
"build-prod-cordova-ios": "cross-env TARGET=cordova cross-env NODE_ENV=production node ./build/build.js && cd cordova && cordova build ios",
"build-dev-cordova-android": "cross-env TARGET=cordova cross-env NODE_ENV=development node ./build/build.js && cd cordova && cordova build android",
"build-prod-cordova-android": "cross-env TARGET=cordova cross-env NODE_ENV=production node ./build/build.js && cd cordova && cordova build android",
"postinstall": "cpy ./node_modules/framework7-icons/fonts/*.* ./src/fonts/"
},
2

I can only suggest you are trying to run this command in wrong working directory