having some issue with flexbox layout in react-native - flexbox

I am trying to make this highlighted line to stretch full width. I have tried many possible ways to come around it but could not get it as desired.
Here is my code from render() method.
return (
<ScrollView style={{backgroundColor: 'rgba(255,255,255,1)'}}>
<View style={styles.container}>
<Image style={styles.image} source={{uri: imageURI}} />
<View style={styles.content}>
<Text style={styles.title}>{news.title}</Text>
<View style={styles.itemIcons}>
<View style={styles.companyView}>
<Image
source={{uri: news.category[0].sourceImage}}
style={ styles.iconsImage} />
<Text style={styles.iconsText}>{news.category_name}</Text>
</View>
<Text style={styles.iconsTextRight}>{this.formatDate(news.pubDate)}</Text>
</View>
<Text style={styles.description}>{description}</Text>
</View>
</View>
</ScrollView>
);
And here are my styles for this.
container: {
flex: 1,
alignItems: 'center',
},
content: {
flex: 1,
flexDirection: 'column',
padding: 10
},
image: {
width: width,
height: custom_height,
// padding: 10
},
title: {
marginBottom: 15
},
itemIcons: {
flex: 1,
flexDirection: 'row',
alignSelf: 'stretch',
marginBottom: 15
},
iconsImage: {
height: 25,
width: 30,
marginRight: 10,
},
iconsText: {
fontSize: 12,
color: "#686666",
alignSelf: 'flex-end'
},
companyView: {flex:1,flexDirection:'row'},
dateView: {flex:1,alignSelf: 'flex-end'},
iconsTextRight: {
fontSize: 12,
color: "#686666",
alignSelf: 'flex-end'
},
description: {
padding: 2,
fontSize: 12,
color: '#323'
}

Change container style to
container: {
flex: 1,
}
Then the view will be aligned as per your requirement.

try this in itemIcons class
justify-content:'space-between'

I couldn't work with whole of your code, but as per the screenshot you posted, I was able to achieve this.
<View style={{flex:1}}>
<View style={{flexDirection:'row',paddingTop:100,justifyContent:'space-between',alignItems:'center'}}>
<View style={{flexDirection:'row',alignItems:'center'}}>
<Image source={require('./images/tiger.jpg')} style={{width:40,height:40}} />
<Text>Roche</Text>
</View>
<Text>25 Mar 2016, 18:16</Text>
</View>
</View>
Try to replicate this in your code and see if it works.

Related

how to make multiple markers using react native with firebase?

I just learned about RN. I'm confused to make many markers in 1 map but the data must be from firebase
<View style={{ alignItems: "center" }}>
<View style={{ justifyContent: "center", alignItems: "center", marginTop: 10 }}>
<MapView
showsUserLocation={true}
style={{ width: 350, height: 200, marginRight: 20, marginLeft: 20 }}
initialRegion={{
latitude: -2.92532,
longitude: 132.29339,
latitudeDelta: 0.00431,
longitudeDelta: 0.0431,
}}>
<FlatList numColumns={4} data={Object.keys(this.state.data)} renderItem={({ item }) => {
return (
<MapView.Marker coordinate={{ latitude: parseFloat(this.state.data[item].latitude), longitude: parseFloat(this.state.data[item].longitude) }}
pinColor={"red"}
title={this.state.data[item].nama}
/>
)
}} />
</MapView>
</View>
</View>

keyboard pushing view up on react native expo

I'm developing an app using react native and Expo, and I'm having trouble with the keyboard on Android. When the keyboard pops up, it pushes the view up too much, causing the title to be cut in the middle. On iOS it's fine. I'd like to achieve the same behaviour..
I took a look at the docs, but it says that Android handles it automatically. But it's not doing it :/
Here is my code:
render() {
const { erroLogin, logando } = this.props;
return (
<ImageBackground style={styles.container} source={backgroundImage}>
<KeyboardAvoidingView
style={styles.keyboardViewContainer}
behavior={Platform.OS === 'ios' ? 'padding' : null}
>
<Text
style={{
fontFamily: 'roboto-bold',
color: '#ffffff',
fontSize: 48,
marginBottom: 20.7 * 3,
}}
>
Balad<Text style={{ fontFamily: 'roboto-light', color: '#ffffff', fontSize: 48 }}>APP</Text>
</Text>
<TextInput
value={this.state.email}
placeholder="Usuário"
style={[styles.input, { marginBottom: 4 * 3 }]}
placeholderTextColor="#828282"
maxLength={255}
autoCorrect={false}
keyboardType="email-address"
autoCapitalize="none"
returnKeyType="done"
underlineColorAndroid="transparent"
onChangeText={text => this.setState({ email: text })}
/>
<TextInput
value={this.state.senha}
placeholder="Senha"
style={styles.input}
placeholderTextColor="#828282"
maxLength={255}
autoCorrect={false}
autoCapitalize="none"
returnKeyType="done"
secureTextEntry
underlineColorAndroid="transparent"
onChangeText={text => this.setState({ senha: text })}
/>
<View style={styles.esqueceuView}>
<TouchableOpacity onPress={this.esqueciMinhaSenha}>
<Text style={styles.esqueceuSenha}>Esqueceu a senha?</Text>
</TouchableOpacity>
</View>
<CustomCheckBox style={styles.continuarConectadoView} onValueChange={this.switch} value={this.state.continuarConectado}>
<Text style={styles.continuarConectadoText}>Manter conectado</Text>
</CustomCheckBox>
<View style={{ height: 20 * 3, width: '80%' }}>
<Button
title="ACESSAR SISTEMA"
onPress={() => this.fazerLogin()}
titleStyle={styles.buttonText}
buttonStyle={styles.button}
loading={logando}
/>
</View>
</KeyboardAvoidingView>
{erroLogin && (
<View style={{ width: '80%', height: '10%', borderRadius: 1.7 * 3, marginTop: '5%' }}>
<ErrorBox
defaultMessage={
erroLogin.response.status === 401
? 'Email ou senha incorretos'
: 'Ops, houve um erro. Tente novamente'
}
/>
</View>
)}
<Text style={styles.versao}>{Constants.manifest.version}v</Text>
</ImageBackground>
);
}
}
const styles = StyleSheet.create({
container: {
flex: 1,
justifyContent: 'center',
alignItems: 'center'
},
keyboardViewContainer: {
width: '100%',
alignItems: 'center'
},
input: {
width: '80%',
height: 16.7 * 3,
borderRadius: 1.7 * 3,
fontSize: 4.7 * 3,
fontFamily: 'roboto-medium-500',
backgroundColor: '#ffffff',
paddingHorizontal: 6 * 3,
},
esqueceuView: {
width: '80%',
},
esqueceuSenha: {
fontFamily: 'roboto-medium-500',
letterSpacing: 0,
color: '#ffffff',
fontSize: 5 * 3,
marginTop: 8 * 3,
marginBottom: 8 * 3,
},
buttonText: {
fontFamily: 'roboto-medium-500',
color: '#ffffff',
fontSize: 4.7 * 3,
},
button: {
borderRadius: 1.7 * 3,
backgroundColor: '#de0059',
},
continuarConectadoView: {
flexDirection: 'row',
width: '80%'
// justifyContent: 'space-between'
},
continuarConectadoText: {
fontFamily: 'roboto-medium-500',
letterSpacing: 0,
color: '#ffffff',
fontSize: 5 * 3,
marginTop: 2 * 3,
marginBottom: 8 * 3,
marginLeft: 3 * 3
},
versao: {
color: '#ffffff',
fontFamily: 'roboto-regular',
fontSize: 16,
position: 'absolute',
top: '90%'
}
});
I posted the issue on the Expo forum and I got an answer.
All I had to do was to wrap the content inside the KeyboardAvoidView in a ScrollView and it worked. Still trying to figure it out why this is necessary, since the docs don't say anything about it.
Anyway, here is the link for the answer https://forums.expo.io/t/problems-with-keyboardavoidview/7799
I hope it helps other people.
There is a another workaround at the moment for SDK 37.
Just add this style code to the root View of a Screen:
{ minHeight: Math.round(windowHeight)) }
Then the keyboard will not resize the view.
import React from 'react';
import {
StyleSheet, View, useWindowDimensions,
} from 'react-native';
export default function AvoidViewMoving() {
const windowHeight = useWindowDimensions().height;
return (
<View
style={[{ minHeight: Math.round(windowHeight) }]}
>
{/* Your stuff */}
</View>
);
}
This idea was not mine. Credits go to this comment on GitHub from Ksedline:
https://github.com/expo/expo/issues/7589#issuecomment-629863678
This worked for me:
return (
<KeyboardAvoidingView
behavior={Platform.OS === "ios" ? "padding" : "height"}
enabled={false}
style={styles.container}
>
... All your code.
</KeyboardAvoidingView>
);
For android add following line to the app.json android object
"softwareKeyboardLayoutMode": "pan",
Try to wrap everything inside your KeyboardAvoidingView inside a ScrollView
<KeyboardAvoidingView style={{ flex: 1}}
behavior={Platform.OS === 'ios' ? 'padding' : 'height'}
>
<ScrollView>
//your container view is here
</ScrollView>
</KeyboardAvoidingView>

How to have dynamic width for a group of views in react native?

I am learning React Native and in the process am trying to achieve a layout design which will have 8 views in a row whose width should be automatically adjusted based on the width of the device.
I am experimenting with some boilerplate code from https://facebook.github.io/react-native/docs/flexbox.html . With my changes the code looks like this:
export default class FlexDirectionBasics extends Component {
render() {
return (
// Try setting `flexDirection` to `column`.
<View>
<View style={{flex: 1, flexDirection: 'row', flexWrap:'wrap'}}>
<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 style={{width: 50, height: 50, backgroundColor: 'red'}} />
<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 style={{width: 50, height: 50, backgroundColor: 'red'}} />
</View>
</View>
);
}
};
And it looks like this:
I'd like to wrap the colour boxes around in two rows but I am not sure how to achieve that.
Thanking you in anticipation
Amby
Use flex: 0.25 for each small view/block:
<View style={{flexDirection: 'column', height: 120}}>
<View style={{flex: 1, flexDirection: 'row', height: 50, top: 100}}>
<View style={{flex: 0.25, height: 50, backgroundColor: 'powderblue'}} />
<View style={{flex: 0.25, height: 50, backgroundColor: 'skyblue'}} />
<View style={{flex: 0.25, height: 50, backgroundColor: 'steelblue'}} />
<View style={{flex: 0.25, height: 50, backgroundColor: 'red'}} />
</View>
<View style={{flex: 1, flexDirection: 'row', height: 50}}>
<View style={{flex: 0.25, height: 50, backgroundColor: 'red'}} />
<View style={{flex: 0.25, height: 50, backgroundColor: 'steelblue'}} />
<View style={{flex: 0.25, height: 50, backgroundColor: 'skyblue'}} />
<View style={{flex: 0.25, height: 50, backgroundColor: 'powderblue'}} />
</View>
</View>
Live Demo: https://snack.expo.io/SkFLS8-df
I have figured it out. Just needed to divide the width into 4 equal parts.
I am posting the change only:
import { AppRegistry, View, Dimensions } from 'react-native';
const {width} = Dimensions.get('window');
And each View's width should be replaced by :
width * 0.25
Thanks, guys. I need to get the programmer's (rubber) duck!

100% width in React Native Flexbox

I have already read several flexbox tutorial, but I still cannot make this simple task to work.
How can I make the red box to 100% width?
Code:
<View style={styles.container}>
<Text style={styles.welcome}>
Welcome to React Natives
</Text>
<Text style={styles.line1}>
line1
</Text>
<Text style={styles.instructions}>
Press Cmd+R to reload,{'\n'}
Cmd+D or shake for dev menu
</Text>
</View>
style:
container: {
flex: 1,
justifyContent: 'center',
alignItems: 'center',
backgroundColor: '#F5FCFF',
borderWidth: 1,
flexDirection: 'column',
},
welcome: {
fontSize: 20,
textAlign: 'center',
margin: 10,
borderWidth: 1,
},
line1: {
backgroundColor: '#FDD7E4',
},
instructions: {
textAlign: 'center',
color: '#333333',
marginBottom: 5,
borderWidth: 1,
},
Thank you!
Update 1:
Suggestion by Nishanth Shankar, adding
flex:1 for the wrapper,
flexDirection: 'row'
Output:
Code:
<View style={styles.container}>
<View style={{flex:1}}>
<Text style={styles.welcome}>
Welcome to React Natives
</Text>
</View>
<View style={{flex:1}}>
<Text style={styles.line1}>
line1
</Text>
</View>
<View style={{flex:1}}>
<Text style={styles.instructions}>
Press Cmd+R to reload,{'\n'}
Cmd+D or shake for dev menu
</Text>
</View>
</View>
container: {
flex: 1,
justifyContent: 'center',
alignItems: 'center',
backgroundColor: '#F5FCFF',
borderWidth: 1,
flexDirection: 'row',
flexWrap: 'wrap',
},
welcome: {
fontSize: 20,
textAlign: 'center',
margin: 10,
borderWidth: 1,
},
line1: {
backgroundColor: '#FDD7E4',
},
instructions: {
textAlign: 'center',
color: '#333333',
marginBottom: 5,
borderWidth: 1,
},
Simply add alignSelf: "stretch" to your item's stylesheet.
line1: {
backgroundColor: '#FDD7E4',
alignSelf: 'stretch',
textAlign: 'center',
},
You should use Dimensions
First, define Dimensions.
import { Dimensions } from "react-native";
var width = Dimensions.get('window').width; //full width
var height = Dimensions.get('window').height; //full height
then, change line1 style like below:
line1: {
backgroundColor: '#FDD7E4',
width: width,
},
Editted:
In order to flex only the center text, a different approach can be taken - Unflex the other views.
Let flexDirection remain at 'column'
remove the alignItems : 'center' from container
add alignSelf:'center' to the textviews that you don't want to flex
You can wrap the Text component in a View component and give the View a flex of 1.
The flex will give :
100% width if the flexDirection:'row' in styles.container
100% height if the flexDirection:'column' in styles.container
Here you go:
Just change the line1 style as per below:
line1: {
backgroundColor: '#FDD7E4',
width:'100%',
alignSelf:'center'
}
First add Dimension component:
import { AppRegistry, Text, View,Dimensions } from 'react-native';
Second define Variables:
var height = Dimensions.get('window').height;
var width = Dimensions.get('window').width;
Third put it in your stylesheet:
textOutputView: {
flexDirection:'row',
paddingTop:20,
borderWidth:1,
borderColor:'red',
height:height*0.25,
backgroundColor:'darkgrey',
justifyContent:'flex-end'
}
Actually in this example I wanted to make responsive view and wanted to view only 0.25 of the screen view so I multiplied it with 0.25, if you wanted 100% of the screen don't multiply it with any thing like this:
textOutputView: {
flexDirection:'row',
paddingTop:20,
borderWidth:1,
borderColor:'red',
height:height,
backgroundColor:'darkgrey',
justifyContent:'flex-end'
}
Use javascript to get the width and height and add them in View's style.
To get full width and height, use Dimensions.get('window').width
https://facebook.github.io/react-native/docs/dimensions.html
getSize() {
return {
width: Dimensions.get('window').width,
height: Dimensions.get('window').height
}
}
and then,
<View style={[styles.overlay, this.getSize()]}>
width: '100%' and alignSelf: 'stretch' didn't work for me. Dimensions didn't suite my task cause I needed to operate on a deeply nested view. Here's what worked for me, if I rewrite your code. I just added some more Views and used flex properties to achieve the needed layout:
{/* a column */}
<View style={styles.container}>
{/* some rows here */}
<Text style={styles.welcome}>
Welcome to React Natives
</Text>
{/* this row should take all available width */}
<View style={{ flexDirection: 'row' }}>
{/* flex 1 makes the view take all available width */}
<View style={{ flex: 1 }}>
<Text style={styles.line1}>
line1
</Text>
</View>
{/* I also had a button here, to the right of the text */}
</View>
{/* the rest of the rows */}
<Text style={styles.instructions}>
Press Cmd+R to reload,{'\n'}
Cmd+D or shake for dev menu
</Text>
</View>
just remove the alignItems: 'center' in the container styles and add textAlign: "center" to the line1 style like given below.
It will work well
container: {
flex: 1,
justifyContent: 'center',
backgroundColor: '#F5FCFF',
borderWidth: 1,
}
line1: {
backgroundColor: '#FDD7E4',
textAlign:'center'
},
Style ={{width : "100%"}}
try this:
StyleSheet generated: {
"width": "80%",
"textAlign": "center",
"marginTop": 21.8625,
"fontWeight": "bold",
"fontSize": 16,
"color": "rgb(24, 24, 24)",
"fontFamily": "Trajan Pro",
"textShadowColor": "rgba(255, 255, 255, 0.2)",
"textShadowOffset": {
"width": 0,
"height": 0.5
}
}
Noted: Try to fully understanding about flex concept.
<View style={{
flex: 2,
justifyContent: 'center',
alignItems: 'center'
}}>
<View style ={{
flex: 1,
alignItems: 'center,
height: 50,
borderWidth: 1,
borderColor: '#000'
}}>
<Text>Welcome to React Nativ</Text>
</View>
<View style={{
flex: 1,
alignItems: 'center,
borderWidth: 1,
borderColor: 'red ',
height: 50
}}
>
<Text> line 1 </Text>
</View>
<View style={{
flex: 1,
alignItems: 'center,
height: 50,
borderWidth: 1,
borderColor: '#000'
}}>
<Text>
Press Cmd+R to reload,{'\n'}
Cmd+D or shake for dev menu
</Text>
</View>
</View>
Simply use width:'100%'
line1: {
backgroundColor: '#FDD7E4',
width: '100%'
},

Place icon on same line as text

I'm trying to place my icon on the same line as 2 Replies.
Here's a screenshot of how it looks:
I'd like to have it to the right of the line, as the arrow shows.
Here's how my Component's render function looks:
render: function() {
return (
<TouchableHighlight onPress={this.props.onSelect}>
<View style={styles.container}>
<Image source={{uri: this.state.image}}
style={styles.image} />
<View style={styles.postDetailsContainer}>
<Text style={styles.postTitle}>
{this.state.name}
</Text>
<Text style={styles.postDetailsLine}>
{this.state.comment}
</Text>
<View>
<Text style={styles.postChildrenDetails}>
{this.props.comment.child_comments_count} Replies
</Text>
<Icon
name='fontawesome|comments-o'
size={25}
color='#D6573D'
style={styles.icon}
/>
</View>
<View style={styles.separator} />
</View>
</View>
</TouchableHighlight>
)
}
Here's how my StyleSheet looks:
container: {
flex: 1,
flexDirection: 'row',
justifyContent: 'center',
alignItems: 'center',
backgroundColor: '#FFFFFD',
},
image: {
height: 48,
width: 48,
borderRadius: 25,
marginTop: 10,
alignSelf: 'center',
marginRight: 15,
marginLeft: 15
},
postDetailsContainer:{
flex: 1,
},
postTitle: {
fontSize: 15,
textAlign: 'left',
marginTop: 10,
marginBottom: 4,
marginRight: 10,
color: '#D6573D'
},
postDetailsLine: {
fontSize: 12,
marginRight: 10,
color: 'gray',
},
postChildrenDetails: {
fontSize: 12,
marginTop: 5,
marginBottom: 10,
marginRight: 10,
color: 'gray',
textAlign: 'right',
flex: 1
},
separator: {
height: 0.5,
backgroundColor: '#CCCCCC',
},
icon: {
flex: 1,
textAlign: 'right',
width: 25,
height: 25
}
})
I had the same challenge and for anyone having the same issue, here is how I went about solving it.
Wrap the Icon and the Text in a View like #Colin Ramsey said above in the comments
It will look like this:
<View style={{ flexDirection: 'row', justifyContent: 'space-between' }}>
<Icon name="ios-chat" size={20} />
<Text>
2 replies
</Text>
</View>
Shalom!
TRY THIS
<View
style={{
backgroundColor: "#ffc8cc",
borderRadius: 30,
margin: 5,
flexDirection: "row",
justifyContent: "space-between",
alignItems: "center",
paddingRight : 25
}}
>
<Text style={styles.title}>Leagues</Text>
<MaterialIcons name="sports-baseball" size={26} color="#cd000f" />
</View>
css for title :
title: {
fontSize: 18,
margin: 20,
color: "#cd000f",
},
Center image and text same line in props reactjs
<div style={{ alignItems: "center", display: "flex", justifyContent: "center" }} >
<img src={this.props.location.state.image} style={{ height: "100px", width: "100px", border: "4px solid white", verticalAlign: 'middle' }} />
<span style={{ fontSize: '40px', fontWeight: 'bolder', textAlign: 'center', verticalAlign: 'middle' }}>
{this.props.location.state.subject}</span>
</div>

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