A StyleSheet is an abstraction similar to CSS StyleSheets

Create a new StyleSheet:

var styles = StyleSheet.create({
  container: {
    borderRadius: 4,
    borderWidth: 0.5,
    borderColor: '#d6d7da',
  },
  title: {
    fontSize: 19,
    fontWeight: 'bold',
  },
  activeTitle: {
    color: 'red',
  },
});

Use a StyleSheet:

<View style={styles.container}>
  <Text style={[styles.title, this.props.isActive && styles.activeTitle]} />
</View>

Code quality:

By moving styles away from the render function, you're making the code easier to understand.
Naming the styles is a good way to add meaning to the low level components in the render function.

Performance:

Making a stylesheet from a style object makes it possible to refer to it by ID instead of creating a new style object every time.
It also allows to send the style only once through the bridge. All subsequent uses are going to refer an id (not implemented yet).

Methods

create

Reference

Methods

`create()`

static create(obj)