columnJustifyContent.js

render() {
 return ( 
 <View style = {
   {
    flex: 1,
    flexDirection: ‘column’,
    justifyContent: ’center’
   }
  } >
  //changed justifyContent value to the flex-start,flex-end,space-between,space-around
  < View style = {{width: 50,height: 50,backgroundColor: ‘powderblue’}} />
  < View style = {{width: 50,height: 50,backgroundColor: ‘skyblue’}} />
  < View style = {{width: 50,height: 50,backgroundColor: ‘steelblue’}} />
  </View>
 );
}