Space between components in React Native styling

Try to add padding to the element then and another blank view in each row, padding make space between each item

<View style={{
      flexDirection:'column',
      flex:1,
    }}>
        <View style={{flex:2,flexDirection:"row",justifyContent:'space-between',padding:10}}>
            <View style={{backgroundColor:'red',flex:2,padding:10}}>
            </View>
          <View style={{flex:0.1}}/>
            <View style={{backgroundColor:'blue',flex:2,padding:10}}>
            </View>
        </View>

        <View style={{flex:2,flexDirection:"row",justifyContent:'space-between',padding:10}}>
            <View style={{backgroundColor:'white',flex:2,padding:10}}>
            </View>
            <View style={{flex:0.1}}/>
            <View style={{backgroundColor:'black',flex:2,padding:10}}>
            </View>
      </View>
      <View style={{flex:2,flexDirection:"row",justifyContent:'space-between',padding:10}}>
            <View style={{backgroundColor:'gray',flex:1,padding:10}}>
            </View>
            <View style={{flex:0.1}}/>
            <View style={{backgroundColor:'yellow',flex:1,padding:10}}>
            </View>
        </View>

You can simply add margins to the elements and it will work fine.

<View style={{flexDirection:'column',flex:6}}>
  <View style={{flex:2,flexDirection:"row",justifyContent:'space-between', marginBottom: 10}}>
    <View style={{backgroundColor:'red',flex:1, marginRight: 5}}>
    </View>
    <View style={{backgroundColor:'blue',flex:1, marginLeft: 5}}>
    </View>
  </View>


  <View style={{flex:2,flexDirection:"row",justifyContent:'space-between', marginBottom: 10}}>
    <View style={{backgroundColor:'white',flex:1, marginRight: 5}}>
    </View>
    <View style={{backgroundColor:'black',flex:1, marginLeft: 5}}>
    </View>
  </View>

  <View style={{flex:2,flexDirection:"row",justifyContent:'space-between', marginBottom: 10}}>
    <View style={{backgroundColor:'gray',flex:1, marginRight: 5}}>
    </View>
    <View style={{backgroundColor:'yellow',flex:1, marginLeft: 5}}>
    </View>
  </View>
</View>

Give the following styling to the parent container (Block/View).

  justifyContent: 'space-around'

OR

  justifyContent: 'space-between'

Space-around will put space between all the elements/view/items and also add space to the borders. Same as all elements get the margin. And the space-between will put the space between all items, without adding space to the borders All this stuff is explained here beautifully. Here is the link

If you are using the map function to render your components, you can try the following code:

// Change to the number of columns in your grid
const numCols = 4;

// Change to the spacing for each item
const spacing = '1.25rem';

// Parent View
<View style={{
    flex: 1,
    flexDirection: 'row',
    flexWrap: 'wrap',
  }}
>
{// List of child views to render
contents.map((content, index) => (
    // add a margin of 'spacing' to the bottom of all cards
    // will supply a left-margin to all cards in between the gap,
    // everytime a card is NOT divisible numCols, add a margin to the left
    <View style={{
      marginBottom : spacing,
      marginLeft: index % numCols !== 0 ? spacing : 0 
    }}
    >
    <Card 
      key={index}
      content={content}
      />
    </View>
  ))
}
</View>

I found that using the following code snippet will create an effect similar to gap in css grids.