Yes, with commands you should be able to (at least in the PC version).
To make an Ender Portal in Minecraft Pocket Edition in creative mode without finding a stronghold, you need to use a command. I am pretty sure they did not add that command. The command used to be
/setblock ~ ~ ~ end_gateway in beta build 1, but it no longer works with the official release.
I have tried building it again and again in MCPE, but it would not fill the middle witht the block
end_gateway. I tried it with all eyes facing in, I have tried it with all of them facing side- to side, I have tried one of them opposite of the other, I have tried placing them all the same way to the world. None of those worked. I even ied following https://www.digminecraft.com/getting_started/how_to_make_end_portal.php
So the only way you can get to the End in Creative without commands is to find a find an End Portal in a stronghold, it should be a lot easier in creative rather than survival.
Here are some helpful links to finding a Stronghold: