My problem is solved when i studied the android requirements page. Install the same Android platforms, jdk which is mentioned in the andriod requirements pages. if you are using any thing latest like latest jdk or anything, u r cordova will not build the apk file. In my case i was using the latest jdk which is not supported by cordova 9. So install everything same to same which is mentioned in ionic android requirements page. i am giving the link here.