Problem with ionic theme download from market

hi guys
am try to install ionic theme from market but all my try failed . my steps
1- download theme
2- install fresh ionic project
3- run ionic serve
4- copy www folder from theme to project
5- refresh browser and theme run right in browser
6- press ctrl+c to disconnect and
7- run ionic cordova build android
8- apk generate but when install on mobile .i see fresh ionic project not my download theme

I believe the www folder is the output generated from building the project.

I believe you can run npm install within the theme project folder to process the package.jaon and then, you should be able to run ionic serve to see the template.

thanks i will try that