JAVASCRIPT

react native nested text vertical align

<Text>
  <View style={{ flexDirection: 'row', alignItems: 'center' }} >
    <Text style={{ fontSize: 60 }}>Big Text</Text>
    <Text style={{ fontSize: 20 }}>Small Text</Text>
  </View>  
</Text>

react native text align vertical center

style={{textAlignVertical: 'top'}}

react native text align vertical center

<View style={{justifyContent: 'center'}}>
   <Text>Vertically Centered Text</Text>
</View>