How to set scrolling to the center of the GestureDetector screen?

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gochag2017-07-10 12:55:03

Java

gochag, 2017-07-10 12:55:03

I am writing a small program by analogy https://habrahabr.ru/post/151492/.
The author of the article writes that "by default, after zooming, the canvas will scroll to the upper left corner."
How to implement the location of the canvas in the center of the screen and zoom?

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