I think a editor on Android Can be good.
It is possible because phone have now good system

I don't think so. Phones have small screens, and you cannot specify one point with your huge thumb. Phone screens cannot handle such complicated jobs such as modifying sprite raw data and stuff.

Most importantly, nobody is developing the editor now. As  Dirbaio said when he made the NSMBe DS, maintaining and coding two versions of the editor is not fun. It does not worth it.
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Another coder can make it.
P.S , The Ds editor corrupt my ROM.

You could try using the DS Editor on Drastic, but it didnt work for me, probably there is some file missing.

considering nobody is even working on the PC editor anymore, it'd be surprising that an Android editor comes out, especially considering it'd be really only useful to people without PCs.
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There is some emulator of Android