when i excuted this command:`ionic cordova platform add android`,has not responded  version: ionic: 3.19.10 cordova: 8.0.0 node: 6.9.4 npm: 5.3.0 os: win7 i am a rookie and i don't know the reason, so i need your help, thankyou!
when i excuted this command:
ionic cordova platform add android,has not respondedversion:
ionic: 3.19.10
cordova: 8.0.0
node: 6.9.4
npm: 5.3.0
os: win7
i am a rookie and i don't know the reason, so i need your help, thankyou!