i designed an app for android in given artboard i.e 360*480 but when i am exporting an artboard in xxxhdpi(400%) higher resolution my artboard still exporting in 360*480 px
can have any solution to export my 360*480 art board into 1080*1920px
In order to export at that size, you'll need to select "Designed at" 100%, not at 400%. For a more in-depth explanation, please check out this article I wrote:
Hope that helps!