If I add a Header with just one button (left or right) the title isn't centered anymore based on the screen.. Its center based on the "rest width"..
Current behaviour

Expected behaviour (Im using here the same icon and text but with the same background color)

<Header>
<Button transparent>
<Icon size={30} name="ios-arrow-back" />
Back
</Button>
<Title>Login</Title>
</Header>
Am I missing something?
I experienced this issues as well, my solution was to drop an empty button on the right of the Title... obviously non-ideal but it works.
<Header>
<Button transparent>
<Icon size={30} name="ios-arrow-back" />
Back
</Button>
<Title>My Super Cool Title</Title>
<Button transparent> </Button>
</Header>
Updated to master. Will publish later this week. Thanks @zzimbler for the quick solution.
Jumping on this, another issue is when you put multiple buttons (more than 2), they all default to the right side and you can't move them anywhere else on the header.

@ErkanSen14 I did go through the design guidelines of both Google and Apples, and although it wasn't clearly mentioned any where. All the examples/screenshots had just 1 button to the left of the title and the remaining were aligned to the right. Is there any example anywhere which has more buttons to the left. We'd then look into it.
@sanketsahusoft Does this mean the issue is fixed? I don't see it in master or in the most recent release.
@ronaldheft Could you please post snippets/screenshots of your code and the resultant UI? Do I need to reopen this?
@sankhadeeproy007 My apologies, the issue is indeed fixed. Thanks!
I am still seeing this issue. I'm new to React Native so that may be an issue, so bear with me:
"native-base": "^2.3.1"
<Header>
<Button transparent onPress={() => Actions.pop()}>
<Icon size={30} name={this.state.IOS ? 'ios-arrow-back' : 'arrow-back'} />
<Text>Alerts</Text>
</Button>
<Body>
<Title>Details</Title>
</Body>
</Header>
Results in:

I would love some help :)
```
``
try this out.
ImportRight` from native-base
Thanks for the quick response! Unfortunately that helped _slightly_ but it's still not centered.

I also tried placing it inside the Header tag but that moved the title over way too much.

Put the Button inside Left
Awesome! That works for iOS.
Do you generally recommend people make different Headers for the two platforms? With the same setup above, Android now looks like this:

The title is too far _right_ :(
Although, only slightly: see below image compared to native android app

Well that is because the guidelines on Android (material design) suggest that the Header title be slightly aligned to the left.
Yeah, I know it should be to the left (I'm an Android developer actually, just jumping into RN recently)... But what I'm saying is with native-base, it's too far to the right (towards center). The light blue bar above is from the Messenger app, and it's the standard distance from left. The native-base (purple) is too far to the right/center.
Oh you can always add a negative margin to the title to fix that.
Gotcha, thanks for your help!
To fix this problem, I applied this style to the <Left> component:
headerLeft: {
flex: 0,
paddingLeft: 6,
width: 62
}
According to the material design guidelines, the leftmost icon is spaced 16dp from left, and the title 72dp. Since the <Header> already has 10 units of horizontal padding, the resulting <Left> paddingLeft is 6 (16-10) and the width of the is 62 (72-10)
This is the result:

Thanks @lopespm this is realy helpfull :)
i tested this issue with this trick
worked for me in Android emulator and IOS simulator and real devices(&roid,IOS)

<Header>
<Left>
<Button transparent >
<Icon name="arrow-back" onPress={() => this.props.navigation.goBack()}/>
</Button>
</Left>
<Body style={{alignItems:'flex-end',backgroundColor:'yellow'}}>
<Title style={{textAlign:'left',backgroundColor:'red'}}>丿蹖賵丕乇</Title>
</Body>
<Right>
<Button transparent onPress={() => this.props.navigation.navigate("DrawerOpen")}>
<Icon name="menu" />
</Button>
</Right>
</Header>
or you can just assing
<Header>
<Left style={{flex:1}}>
<Button transparent >
<Icon name="arrow-back" onPress={() => this.props.navigation.goBack()}/>
</Button>
</Left>
<Body style={{flex:1,alignItems:'center'}}>
<Title style={{textAlign:'left'}}> 3丿蹖賵丕乇</Title>
</Body>
<Right style={{flex:1}}>
<Button transparent onPress={() => this.props.navigation.navigate("DrawerOpen")}>
<Icon name="menu" />
</Button>
</Right>
</Header>
Most helpful comment
i tested this issue with this trick

worked for me in Android emulator and IOS simulator and real devices(&roid,IOS)
or you can just assing