Header.js
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import React from 'react'
import {View, Text, Image, StyleSheet, TouchableOpacity,StatusBar,Dimensions,PixelRatio} from 'react-native'
import {NavigationActions,SafeAreaView} from 'react-navigation'
import {observer} from 'mobx-react/native'
const line = 1 / PixelRatio.get();
const isX=Dimensions.get("window").height===812&&Dimensions.get("window").width===375
const XOffset=isX?20:0
export const headerHeight = 44
const styles = StyleSheet.create({
container: {
height: headerHeight,
backgroundColor: '#fafafa',
flexDirection: 'row',
alignItems: 'center',
borderBottomColor:"#dddddd"
},
leftView: {
paddingLeft: 15,
flex: 1,
},
rightView: {
flex: 1,
paddingRight: 15,
alignItems: 'flex-end',
},
titleView: {
flex: 1,
alignItems: 'center',
},
title: {
fontSize: 18,
color: "#333333"
},
backIcon: {
height: 16.5,
width: 9,
},
codeIcon:{
width:20,
height:20
},
rightText:{
fontSize:16,
color:"#333333",
}
})
@observer
export default class Header extends React.Component {
left() {
const {navigation, pop, left, leftPress,backKey,popToHome,code} = this.props
if (pop||popToHome) {
return (
<TouchableOpacity style={styles.leftView} onPress={() => {
if(pop){navigation.dispatch(NavigationActions.back({key:backKey}))}
if(popToHome){
const resetAction = NavigationActions.reset({
index: 0,
key:null,
actions: [
NavigationActions.navigate({ routeName: 'BottomModal'})
]
})
this.props.navigation.dispatch(resetAction)
}
}}>
<Image style={styles.backIcon} resizeModa="contain" source={require('./imgs/back.png')}/>
</TouchableOpacity>
)
}
if (left) {
return (
<TouchableOpacity style={styles.leftView} onPress={() => leftPress && leftPress()}>
{left}
</TouchableOpacity>
)
}
if(code){
return (
<TouchableOpacity style={styles.leftView} onPress={() => leftPress && leftPress()}>
<Image style={styles.codeIcon} resizeModa="contain" source={require('./imgs/code.png')}/>
</TouchableOpacity>
)
}
return <View style={styles.leftView}/>
}
center() {
const {center, title} = this.props
if (title) {
return (
<View style={styles.titleView}>
<Text style={styles.title}>{title}</Text>
</View>
)
}
if (center) {
return center
}
return null
}
right() {
const {right,rightText, rightPress} = this.props
if (right) {
return (
<TouchableOpacity onPress={() => rightPress && rightPress()} style={styles.rightView}>
{right}
</TouchableOpacity>
)
}
if(rightText){
return(
<TouchableOpacity onPress={() => rightPress && rightPress()} style={styles.rightView}>
<Text style={styles.rightText}>{rightText}</Text>
</TouchableOpacity>
)
}
return <View style={styles.rightView}/>
}
render() {
const border={borderBottomWidth:this.props.noborder?0:line,}
const {offset}=this.props
// debugger
return (
<View View style={{backgroundColor:"#fafafa"}}>
<StatusBar barStyle={'default'}></StatusBar>
<SafeAreaView style={[styles.container,border,offset&&{paddingTop:offset+XOffset,height:headerHeight+offset+XOffset}]} >
{this.left()}
{this.center()}
{this.right()}
</SafeAreaView>
</View>
)
}
}