What is the default unit of style in React Native?

bozzmob picture bozzmob · Dec 28, 2015 · Viewed 48.1k times · Source

I am contributing to an Open Source Project where I am developing Material design for React Native. I am blocked at work,I am unable to make some UI level enhancements w.r.t. padding, alignment etc.,

This is the Official Spec of Material Design for Drawer-

According to the spec of Material Design

In the above image, the UNIT of measurement is dp.

But, in my React Native code, I see there is no such units mentioned. Considering it is "react native" I am confused whether it is px or dp.

I even went over the Official Docs of React Native for Style component. I don't see a mention anywhere.

My Code looks like-

const styles = {
    touchable: {
        paddingHorizontal: 16,
        marginVertical: 8,
        height: 48
    },
    item: {
        flex: 1,
        flexDirection: 'row',
        alignItems: 'center',
    },
    icon: {
        position: 'relative',
    },
    value: {
        flex: 1,
        paddingLeft: 34,
        top: 2
    },
    label: {
        top: 2
    }
},

Please can you tell me, if this is pixels or dp? And also, is 1px = 1dp?

Answer

Nick picture Nick · Aug 9, 2016

From the docs:

All dimensions in React Native are unitless, and represent density-independent pixels. Setting dimensions this way is common for components that should always render at exactly the same size, regardless of screen dimensions.

So yes, units in React Native are in dp. If you want to convert them to pixels, use PixelRatio.getPixelSizeForLayoutSize()