How to change apk name by editing manifest file?

In manifest file, you can change the application label only. If you want to change the apk file name, you should change your project name. To do this, you just right click on your project in Navigator windows, choose Refactor>Rename and type a new name for it.

android update project --name your_desired_name --path .

This changes the ANT project name in build.xml.