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Are there any demos that we can learn from? The small ones I checked online are all for Android. I want to separate the modules of the APP, and then each module can be downloaded separately on the main page, similar to the download of QQ emoticons. Of course, it can also be deleted. For example, I make an emoticon APP. There are 6 types of emoticon packs on the main interface. You can download or delete them by clicking on them. Some people say that qq’s emoticon package is not ipa but plist/SQLite. I’m not sure. I’ve never been exposed to this aspect. I’d like to ask someone to give me some advice and give me some direction