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[ Facebook Messenger API: Webviews Opening in Browser ]

I'm trying to use the Facebook Messenger API to create a "generic" message with a button. When that button is clicked, I want to display a "webview" (ie. a framed version of a webpage inside Messenger).

However, even though my button has the required webview_height_ratio property, it still opens up in my phone's browser, not inside Messenger. Since the Facebook documentation claims that that's all you need to make a button open a webview, I'm not sure what I might be doing wrong.

The message I'm sending to Facebook to create the button (as part of a generic template) is:

        "id": "some ID"
    "message": {
                    "buttons": [{
                        "title":"Webview example",
                    "image_url": "http://www.example.com/image.png",
                    "item_url": "http://www.example.com",
                    "subtitle":"It's a TV!",
                    "title":"Some TV"

Can anyone tell me what I might be doing wrong?

EDIT: I'm not sure if it was necessary, but I have white-listed the domain I'm trying to point to for the webview (but obviously that hasn't helped).

Answer 1

Apparently, webview only started to work in the last update.

Try to update your Messenger app.