WhatsApp FAQ - I'm an iPhone developer, how can I integrate WhatsApp into my app?

I'm an iPhone developer, how can I integrate WhatsApp into my app? - We provide several ways in which your iPhone application can interact with WhatsApp: through custom URL schemes, share extension and through the Document Interaction API.Custom URL SchemeOpening whatsapp:// URL with one of the following parameters, will open our app and perform a custom action.URLParametersOpensapp-The WhatsApp Messenger applicationsendNew chat composertextIf present, this text will be pre-filled into message text input field on a conversation screen.