Problem with ionic theme download

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