How can I give Negative value to Height or Width of a View in React Naitve?

Question

I am trying to create a selector in react native using PANRESPONDER in reactNative. Actually width of a View is oriented from left to right, and Height of the View is oriented from top to bottom. I want to dynamically reverse the box. So I am giving width and height as a negative Value. But the View disappears. How could I reverse the View ?

I suggest you edit the question with a bit more information. It's not clear what your are trying to achieve, so it's difficult to help. — jevakallio, Jan 27 '17 at 15:16
possible duplicate http://stackoverflow.com/questions/30203154/get-size-of-a-view-in-react-native — Pramendra Gupta, Jan 28 '17 at 02:53

score 1 · Answer 1 · answered Jun 08 '18 at 02:04

1

If anybody ends up here looking for how to make a value negative of say the screen dimensions so you can move an element around in say a slider..

let screenWidth = Dimensions.get('window').width;
let screenWidthNegative = parseInt('-' + screenWidth);

<View style={[styles.thisViewsStyle, {marginLeft: screenWidthNegative}]}></View>

answered Jun 08 '18 at 02:04

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`let screenWidthNegative = -screenWidth;` works more easily – ICW Feb 20 '21 at 03:30

How can I give Negative value to Height or Width of a View in React Naitve?

1 Answers1