问题
I wanted to create a Hybrid App using Ionic/React native. In my application, I am going to create stickers and I wanted to upload those stickers to WhatsUp. How can I do that?
回答1:
That's not how Whatsapp stickers work, they're not uploaded to Whatsapp.
If you'd like to create your own stickers for WhatsApp, you can package them in an Android or iOS app. You can publish your sticker app like any other app to the Google Play Store or Apple App Store, and users who download and install your app will be able to start sending those stickers right away from within WhatsApp.
You can check the full specifications of creating Whatsapp stickers posted by Whatsapp here.
They've even published native app samples for both Android & IOS here so you can replicate them on whatever technology you want to use.
来源：https://stackoverflow.com/questions/57405458/how-to-create-a-sticker-app-and-send-them-to-whatsapp-or-any-messenger-using-js