Zoom in out TextView within Scrollview in Fragment Android Studio

Meeting SDK Android
1

Since many days, I’m searching on Internet esp. on StackOverflow got many example code but failed to implement in my app (Fragment).

I have 2 Long TextViews in Scroll-view. I want to increase/decrease (zoom in/out) font size of all textviews on two finger touch (pinch). I need code for Fragment not for Activity.

Hoping for prompt and quick response from kind developers, Thanks a lot in advance

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