问题
What I want to make is emotion keyboard so that I can use the same in iPhone. When I searched, I found Emoji is better one to take ideas.
Inshort, I want to make app which would be keyboard and that can be used anywhere in messenger.
Any idea/ inputs how to go ahead to create app like Emoji?
回答1:
the Emoji chars are part of the unicode system, and the point is you can use the unicode chars on every platform, because it is a standard.
every "image" has a unique code in the unicode table, (like the letter A has) for that code the current platform shows the current character of the selected font-set.
making random images (of codes) won't work, because they are not part of the standards, and the receiver has to have the key to decode the special image (or codes) like the Skype or Messenger do inside the house but they won't be part of the standard unicode table.
you can use standard unicode chars worldwide, or you can use your special images in your application only. you might find here a bit more about the Emoji charset, unicode codes, and it shows you how the most of the Emoji chars will appear on different platforms.
it is just a quick review of it.
来源：https://stackoverflow.com/questions/14919532/how-to-make-new-custom-emotion-keyboard-for-ios-somewhat-like-emoji