I am developing a react-native application. One of the app screens contains a list of albums. I have divided each album container into components which are Card and CardSection.
A Card can contain many CardSections. The CardSection will contain an image and 2 Text titles. The problem I am facing is with the positioning of the content in the CardSection as flexDirection:'row' is not working.
Here is the CardSection.js
import React from 'react';
import {View, Text, Image} from 'react-native';
import Card from './Card';
import CardSection from "./CardSection";
const AlbumDetail = ({album}) => {
// destructing the props
const {title, artist, thumbnail_image} = album;
return (
<Card>
<CardSection>
<View style={styles.thumbnailContainerStyle}>
<Image style={styles.thumbnailStyle} source={{uri: thumbnail_image}} />
</View>
<View style={styles.headerContentStyle} >
<Text style={styles.headerTextStyle}>{title}</Text>
<Text>{artist}</Text>
</View>
</CardSection>
</Card>
);
};
const styles = {
headerContentStyle: {
flexDirection: 'column',
justifyContent: 'space-around'
},
headerTextStyle:{
fontSize:18
},
thumbnailStyle: {
height: 50,
width: 50
},
thumbnailContainerStyle: {
justifyContent: 'center',
alignItems: 'center',
margin: 10,
marginRight: 10
}
};
export default AlbumDetail;
Here is the CardSection.js
import React from 'react';
import {View} from 'react-native';
const CardSection = (props) => {
return (
<View styles={styles.containerStyle}>
{props.children}
</View>
);
};
const styles = {
containerStyle: {
borderBottomWidth: 1,
padding: 5,
backgroundColor: '#fff',
justifyContent: 'flex-start',
flexDirection: "row",
borderColor: '#ddd',
position: 'relative'
}
};
export default CardSection;
The resultant should that the Image placed towards the left and on the right side of the image there will be 2 Text titles and their flexDirection will be column
<View styles={styles.containerStyle}> you have typo, it is styles, the prop should be style.
use this
headerContentStyle: {
flexDirection: 'row',
justifyContent: 'space-around'
}
instead of
headerContentStyle: {
flexDirection: 'column',
justifyContent: 'space-around'
}
You have to use card containerStyle props in CardSection.js file.
there you should have to use flexDirection :'row' .
Hope it will work.
I had a similar problem where flexDirection: 'row' was not working in one of my components that I was importing in App.js.
What was causing this was the alignItems: 'center' in the stylesheet for the main container in my App.js file.
I hope this helps someone.
You can check this.
import { TouchableOpacity } from 'react-native'
Related
So, I was building a simple mobile application on react native. On my history page,
I built a table using the react-native-table-component library, and on pressing the column of the table, it would redirect the user to a page called 'test'.
But whenever I try to run the app, it always shows "TypeError: undefined is not a function (near '...data.map...')"
Can anybody please help?
I have uploaded the code for reference.
HistoryScreen code:
import *as React from 'react';
import {View, Text, StyleSheet, Button} from 'react-native';
import {Table, Row, Rows} from 'react-native-table-component';
import { useState } from 'react/cjs/react.development';
import { NavigationContainer, TabActions} from '#react-navigation/native';
import test from './test';
import HomeScreen from './HomeScreen';
const tableData={
tableHead: ['Incident Report'],
tableData: [
['Incident#1'],
['Incident#2'],
],
};
const styles=StyleSheet.create({
container: {flex: 1, padding: 10, justifyContent:'center', backgroundColor:'#fff'},
head: { height: 44, backgroundColor: 'darkblue' },
headText: { fontSize: 20, fontWeight: 'bold' , textAlign: 'center', color: 'white' },
text: { margin: 6, fontSize: 16, fontWeight: 'bold' , textAlign: 'center' },
});
export default function HistoryScreen({navigation}){
const [data, setData] = useState(tableData);
return(
<View style={styles.container}>
<Table borderStyle={{borderWidth: 4,borderColor: 'teal'}}>
<Rows onPress={()=> navigation.navigate('HomeScreen')} data={data.tableHead} style={styles.head} textStyle={styles.headText}/>
<Rows data={data.tableData} textStyle={styles.text}/>
</Table>
</View>
);
}
homepage code
import * as React from 'react';
import {View, Text} from 'react-native';
export default function test(){
return(
<View style={{flex: 1, backgroundColor: '#fff', alignItems: 'center', justifyContent: 'center'}}>
<Text
style={{flex: 1, backgroundColor: '#fff', alignItems: 'center', justifyContent: 'center'}}> test </Text>
</View>
);
}
import * as React from 'react';
import {View, Text} from 'react-native';
export default function HomeScreen( {navigation} ){
return(
<View style={{flex: 1, backgroundColor: '#fff', alignItems: 'center', justifyContent: 'center'}}>
<Text
onPress={()=> alert('This is the "Home" Screen')}
style={{flex: 1, backgroundColor: '#fff', alignItems: 'center', justifyContent: 'center'}}> test test</Text>
</View>
);
}
The problem most likely comes from your HistoryScreen code. This is the part where the error come from.
<Rows onPress={()=> navigation.navigate('HomeScreen')} data={data.tableHead} style={styles.head} textStyle={styles.headText}/>
If you see carefully in your import there are two different components called Row and Rows. From what I saw in the docs, it seems to take two different data shape. Row takes an array and Rows takes an array within array.
This is what your code supposed to look like:
...
<Table borderStyle={{ borderWidth: 4, borderColor: 'teal' }}>
<Row
onPress={() => navigation.navigate('HomeScreen')}
data={data.tableHead}
style={styles.head}
textStyle={styles.headText}
/>
<Rows data={data.tableData} textStyle={styles.text} />
</Table>
...
Problem:
I have created a react native component with three touchable opacity components. It is showing like this.
This is how my code is looking.
/* eslint-disable prettier/prettier */
import React, {Component} from 'react';
import {View, Text, TouchableOpacity} from 'react-native';
import LangaugeCard from './LanguageCard';
import styles from '_styles/homescreen';
class Localization extends Component {
render() {
return (
<View style={styles.localization_container}>
<TouchableOpacity>
<LangaugeCard language="Hindi" />
</TouchableOpacity>
<TouchableOpacity>
<LangaugeCard language="English" />
</TouchableOpacity>
<TouchableOpacity>
<LangaugeCard language="French" />
</TouchableOpacity>
</View>
);
}
}
export default Localization;
My LanguageCard looks like this.
/* eslint-disable prettier/prettier */
import React from 'react';
import {View, Text} from 'react-native';
import styles from '_styles/homescreen';
const LanguageCard = (props) => {
const {language, instruction} = props;
return (
<View style={styles.langauge_card}>
<View style={styles.langauge_view}>
<Text style={styles.language}>{language}</Text>
</View>
<View style={styles.instruction_view}>
<Text style={styles.instruction}>{instruction}</Text>
</View>
</View>
);
};
export default LanguageCard;
This is my styling file.
/* eslint-disable prettier/prettier */
import {StyleSheet} from 'react-native';
const styles = StyleSheet.create({
container: {
flexDirection: 'column',
flex: 1,
backgroundColor: '#eeeeee',
height: '100%',
justifyContent: 'center',
},
localization_container: {
flex: 1,
},
langauge_card: {
backgroundColor: '#ffffff',
height: '46%',
marginLeft: '5%',
marginRight: '5%',
borderRadius:35,
flexDirection:'row',
elevation: 1,
},
langauge_view:{
backgroundColor:'#007aff',
marginTop: '8%',
marginBottom: '8%',
marginLeft:'8%',
borderRadius: 15,
width:'30%',
justifyContent: 'center',
},
language:{
fontFamily:'IskoolaPota',
fontSize:24,
textAlign:'center',
color:'#ffffff',
justifyContent:'center',
},
instruction_view:{
marginTop: '8%',
marginBottom: '8%',
marginLeft:'5%',
justifyContent: 'center',
},
instruction:{
color:'#444444',
fontSize: 15,
},
});
export default styles;
What I want to do is to reduce the space between touchable components and put all three buttons center of the screen I tried a lot to find a way to do so but It was unable to do so. Can someone help me to achieve this one by modifying the code? Thank you
I don't think its a good idea to use percentages as height in this case. Right now, your TouchableOpacity is going off the screen because you have height: '46%', Since you have 3 of those, its height is 138% + padding and margins.
I prefer to use flex and use justifyContent for aligning horizontally and align-items for aligning vertically
So in your case,
langauge_card:{
flex: 1,
}
langauge_view:{
flex: 1,
alignItems: "center",
justifyContent: "center"
}
instruction_view:{
flex: 1,
alignItems: "center",
justifyContent: "center"
}
You can play around wth flex, margin, and "flex-start", "center", "flex-end" for justify content and alignItem.
Hope this helped a bit.
Put these styles in localization_container
{
flex: 1,
alignItems: 'center',
JustifyContent: 'center'
}
These styles will make sure items inside the child's view will be shown in the center of the screen then remove the hight of your containers (if you have any) one by one, Try to avoid usage of % as this can unpredictable.
In my app, I have a screen that shows three rows that contain some text and a background image.
I used to only put the image, but I want to be able to press on the images to execute an action. This was my code before and it worked properly :
import React, { Component } from 'react'
import { ScrollView, View } from 'react-native'
import { useTranslation } from 'react-i18next';
import { TouchableOpacity } from 'react-native-gesture-handler';
import { useNavigation } from '#react-navigation/native';
import SelectorBox from '../../components/workout/SelectorBox';
const EXERCISE = require('../../assets/workout/exercise.jpg');
const MUSCLES = require('../../assets/workout/muscles.jpg');
const ROUTINE = require('../../assets/workout/routine.jpg');
export default function SelectorScreen() {
const {t} = useTranslation();
const navigation = useNavigation();
return (
<View style={{flex: 1, flexDirection: 'column', backgroundColor: "blue"}}>
<SelectorBox image={MUSCLES} title={t('workout.muscleGroups')} />
<SelectorBox image={EXERCISE} title={t('workout.exercises')} />
<SelectorBox image={ROUTINE} title={t('workout.routines')} />
</View>
)
}
import React from 'react'
import {Text, View, ImageBackground, StyleSheet, Dimensions} from 'react-native'
import { TouchableWithoutFeedback } from 'react-native-gesture-handler'
export default function SelectorBox(props) {
return (
<ImageBackground source={props.image} style={styles.background}>
<View style={styles.titleBar}>
<Text style={styles.title}>{props.title}</Text>
</View>
</ImageBackground>
)
}
const styles = StyleSheet.create({
background: {
flexDirection: "column",
alignItems: 'center',
justifyContent: 'center',
flex: 1,
width: Dimensions.get('window').width,
},
titleBar : {
width: Dimensions.get('window').width,
height: 60,
backgroundColor: '#ffb623',
justifyContent: 'center'
},
title: {
fontWeight: "900",
fontSize: 32,
alignSelf: 'center',
}
})
However, when I change the code, all my SelectorBox disappear...
export default function SelectorBox(props) {
return (
<TouchableWithoutFeedback style={styles.option}>
<ImageBackground source={props.image} style={styles.background}>
<View style={styles.titleBar}>
<Text style={styles.title}>{props.title}</Text>
</View>
</ImageBackground>
</TouchableWithoutFeedback>
)
}
const styles = StyleSheet.create({
option: {
flex: 1,
width: Dimensions.get('window').width,
// backgroundColor: 'red'
},
background: {
flexDirection: "column",
alignItems: 'center',
justifyContent: 'center',
flex: 1,
width: Dimensions.get('window').width,
},
titleBar : {
width: Dimensions.get('window').width,
height: 60,
backgroundColor: '#ffb623',
justifyContent: 'center'
},
title: {
fontWeight: "900",
fontSize: 32,
alignSelf: 'center',
}
})
I would like to be able to keep it like this screenshot everywhere. Right now, the screen is empty. (blue background, this is what i set it to)
Can you guide me ?
Try to debug the issue by steps.
Try and and import TouchableOpacity from react-native instead of react-native-gesture-handler. Does the backgroundColor: 'red' color works if uncomment it from the option style?
Change this:
import { TouchableWithoutFeedback } from 'react-native-gesture-handler'
to import from RN:
import { TouchableWithoutFeedback } from 'react-native'
You should consider of using TouchableOpacity instead of TouchableWithoutFeedback:
TouchableWithoutFeedback
Do not use unless you have a very good
reason. All elements that respond to press should have a visual
feedback when touched.
TouchableWithoutFeedback supports only one child. If you wish to have
several child components, wrap them in a View. Importantly,
TouchableWithoutFeedback works by cloning its child and applying
responder props to it. It is therefore required that any intermediary
components pass through those props to the underlying React Native
component.
I am new to react. I want to create a vertical button using react native. How can I do that? The required image of button is attached for your reference. Any help would be really appreciated.
Here is a simple way to do it using Switch:
(First picture: IOS, Second picture: Android)
import React, { Component } from 'react';
import { Text, View, StyleSheet, Switch } from 'react-native';
import { Constants } from 'expo';
export default class App extends Component {
state = {
accept: false
}
render() {
return (
<View style={styles.container}>
<View style={{flex: 2, alignItems: "center"}}>
<Text>Turn on the switch when you want to accept work, and turn it off when you dont!</Text>
</View>
<View style={{flex: 1, alignItems: "center"}}>
<Switch
style={styles.verticalSwitch}
value={this.state.accept}
onTintColor="blue"
onValueChange={() => this.setState({accept:!this.state.accept})}
/>
<Text style={{marginTop: 12}}>
{this.state.accept ? "on" : "off"}
</Text>
</View>
</View>
);
}
}
const styles = StyleSheet.create({
container: {
flex: 1,
flexDirection: "row",
alignItems: 'center',
justifyContent: 'center',
backgroundColor: '#fff',
paddingHorizontal: 20,
},
verticalSwitch: {
transform: [{ rotate: '-90deg'}]
}
});
I'm making simple To-Do application using React Native, just watching YouTube. The difference video and me is My version is latest RN, and simulating app in Android.
The code looks like same but my TextInput width is not 100%, but very small element as you can see
My code is below, How to fix it?
import React, {Component} from 'react';
import {
StyleSheet,
Text,
View,
TextInput,
} from 'react-native';
export default class Main extends Component {
render() {
return (
<View style={styles.wrapper}>
<View style={styles.topBar}>
<Text style={styles.title}>
To-Do List
</Text>
</View>
<View style={styles.inputWrapper}>
<TextInput
style={styles.input}/>
</View>
</View>
);
}
}
const styles = StyleSheet.create({
wrapper: {
flex: 1,
justifyContent: 'flex-start',
alignItems: 'stretch'
},
topBar: {
padding: 16,
flexDirection: 'row',
justifyContent: 'center',
alignItems: 'center',
backgroundColor: '#2ecc71'
},
title: {
color: 'white',
fontSize: 20
},
inputWrapper: {
padding: 10,
flexDirection: 'row',
alignItems: 'stretch',
backgroundColor: 'green',
borderColor: 'red'
},
input: {
height: 26,
borderRadius: 8,
backgroundColor: 'white'
}
});
Try removing the flexDirection style from inputWrapper.
See it here.