Develop Reference

React Native, Height is being auto adjusted even when defined

Im new to this framework, So this is the code:
import { StatusBar } from 'expo-status-bar';
import React from 'react';
import { SafeAreaView, StyleSheet, Text, View } from 'react-native';
import { MainLogo } from '../../logos/mainLogo';
import { TextInput } from "react-native";
export function Home() {
return (
<SafeAreaView>
<View style={styles.firstBackGround}>
<MainLogo/>
<Text style={{fontSize:25,fontWeight:'bold',color:'rgb(108,
150, 232)',}}>LIBRARY</Text>
</View>
<TextInput placeholder='Search Song or Artist' style=
{styles.secondBackGround} placeholderTextColor="#6b7eb1" >
</TextInput>
<Text style={styles.recommendedText}>Recommended</Text>
</SafeAreaView>
);
}
const styles = StyleSheet.create(
{
container: {
},
firstBackGround: {
flexDirection:'row',
alignItems:'center',
flex:0,
},
secondBackGround:{
backgroundColor: '#3f4d7e',
width:'83%',
marginTop:10,
height:'17%',
borderRadius:20,
flex:0,
marginLeft:'auto',
marginRight:'auto',
paddingLeft: 20,
},
recommendedText:{
fontSize:17,
flex:0,
flexDirection:'row',
fontWeight:'bold',
color:'rgb(108, 150, 232)',
marginLeft:20,
marginTop:100,
}
});
here is the image of result:
the more i increase the top margin for recommended text, it auto changes the input field height. I solved this problem by mistake between First View and text input but i cant do it again between text input and Text(recommended)

the height is increasing because you gave it in % and also flex:0 has no impact.
use like this
import React from 'react';
import { Dimensions, SafeAreaView, StyleSheet, Text, View } from 'react-native';
import { TextInput } from "react-native";
const { width } = Dimensions.get('window')
export default function SettingsScreen() {
return (
<SafeAreaView style={{ flex: 1 }}>
<View style={styles.firstBackGround}>
<Text style={{ fontSize: 25, fontWeight: 'bold', color: 'rgb(108,150, 232)', }}>LIBRARY</Text>
</View>
<TextInput placeholder='Search Song or Artist' style={styles.secondBackGround} placeholderTextColor="#6b7eb1" />
<Text style={styles.recommendedText}>Recommended</Text>
</SafeAreaView>
);
}
const styles = StyleSheet.create(
{
container: {
},
firstBackGround: {
flexDirection: 'row',
alignItems: 'center',
flex: 0,
},
secondBackGround: {
backgroundColor: '#3f4d7e',
width: '83%',
marginTop: 10,
// height: '17%',
height: width / 7.5,
borderRadius: 20,
// flex: 0,
marginLeft: 'auto',
marginRight: 'auto',
paddingLeft: 20,
},
recommendedText: {
fontSize: 17,
// flex: 0,
flexDirection: 'row',
fontWeight: 'bold',
color: 'rgb(108, 150, 232)',
marginLeft: 20,
marginTop: 200,
backgroundColor: 'red'
}
});
if you want to make design responsive then
step:1 - get a scale of figma or xd screen (eg 375 width)
step:2 -say your height of a view is 50 then divide 375/50 = 7.5
step:3 - use height width/7.5 ( width of your current window, get this by using Dimensions API)
another way is use this library react-native-size-matters

Custom components does not work in React Native

I am new to react native and trying to make a small user input form, but my code does not work well.
I made a class that will create label and text input, but style does not work for my class, Form1. The class in the same file App.js worked, but importing from another js file did not.
Can someone help me to figure out the solution and why it happens?
App.js
import React, { useState } from 'react';
import { StatusBar } from 'expo-status-bar';
import { StyleSheet, Text, View, Button, TextInput } from 'react-native';
import Form1 from './Parts/Form1';
export default function App() {
const [name, setName] = useState('Haruku');
const [age, setAge] = useState('30');
return (
<View style={styles.container}>
<StatusBar style="auto" />
<View>
<Text style={styles.centerBox} borderWidth="1">Enter name: </Text>
<TextInput
style={styles.input}
placeholder='Example'
onChangeText={(val) => setName(val)} />
<Form1 />
<Text>name: {name}, age: {age}</Text>
</View>
</View>
);
}
const styles = StyleSheet.create({
container: {
flex: 1,
backgroundColor: '#fff',
alignItems: 'center',
justifyContent: 'center',
},
input: {
borderWidth: 1,
borderColor: '#777',
alignItems: 'center',
justifyContent: 'center',
padding: 8,
margin: 10,
width: 200,
},
centerBox: {
alignSelf: 'center',
textAlign: 'center',
borderWidth: 1,
width: 150,
},
buttonContainer: {
marginTop: 20,
backgroundColor: "#0000FF",
},
});
Form1.js
import React from 'react';
import { StyleSheet, Text, View,TextInput } from 'react-native';
class Form1 extends React.Component {
render() {
return (
<View>
<Text style={styles2.centerBox}>Age: </Text>
<TextInput style={styles2.input} placeholder='Example' />
</View>
)
}
}
const styles2 = StyleSheet.create({
container: {
flex: 1,
backgroundColor: '#fff',
alignItems: 'center',
justifyContent: 'center',
},
input: {
borderWidth: 1,
borderColor: '#777',
alignItems: 'center',
justifyContent: 'center',
padding: 8,
margin: 10,
width: 200,
placeholder: "Ex",
},
centerBox: {
alignSelf: 'center',
textAlign: 'center',
alignItems: 'center',
},
});
export default Form1;

We should import the React when we are creating any component that returns JSX.
Have a try by adding the below import statement on the top of the Form1.js
import React from 'react';

split a view horizontally in two part in React Native

Hi i'm new in REACT NATIVE, i have a in my react native app, with style of a card like the code below. first i want to split it into two horizontally parts with the ratio of( 3 for upper part and 2 for lower part). And second i want to write on each part.
I
import React from "react";
import {
Button,
StyleSheet,
Text,
View,
TouchableHighlight,
TouchableOpacity,
} from "react-native";
export default function App() {
return(
<View style={styles.card}>
<View style={styles.results}>
<Text style={styles.texty}>numbers</Text>
</View>
<View style={styles.calculations}>
<Text>numbers</Text>
</View>
</View>
);
};
const styles = StyleSheet.create({
card: {
flex: 1,
width: "80%",
height: 100,
shadowColor: "black",
shadowOffset: { width: 0, height: 2 },
shadowRadius: 6,
shadowOpacity: 0.26,
elevation: 5,
backgroundColor: "white",
padding: 100,
borderRadius: 15,
marginTop: 80,
margin: 42,
justifyContent: "center",
},
texty: {
fontSize: 30,
},
calculations: {
fontSize: 34,
},
results: {
flex: 6,
paddingTop: 25,
justifyContent: "center",
alignItems: "flex-end",
borderBottomWidth: 0.3,
borderBottomColor: "grey",
});
brought my code down there

Please use flex property to achieve this like:
card: { flex: 1 }
results: { flex: .6, flexWrap:'wrap'}
calculations: {flex:.4, flexWrap:'wrap'}
P.S:
You can add other styles as you like but don't use height property.

Text not displaying inside View

Why is this Text not displaying inside this View? Tried flexing on the circle and text. I like long walks on the beach and writing extra characters to qualify for this post to be active.
import React, {Component} from 'react';
import {View, StyleSheet, Text} from 'react-native';
export default class Interest extends Component {
constructor(props) {
super(props);
}
render() {
return(
<View style={styles.circle}>
<Text style={styles.text}>{this.props.title}</Text>
</View>
);
}
}
const styles = StyleSheet.create({
circle: {
//flex: 1,
padding: 15,
borderRadius: 50,
borderWidth: 1,
borderColor: 'black',
height: 10,
minWidth: 80,
alignItems: 'center',
marginBottom: 10
},
text: {
//flex: 0,
fontFamily: "CircularStd-Book",
fontSize: 14,
color: '#2f354b',
textAlign: 'center'
}
});

Text was hidden by padding and height. Corrected CSS is as follows:
const styles = StyleSheet.create({
circle: {
padding: 8,
borderRadius: 50,
borderWidth: 1,
borderColor: 'black',
height: 35,
marginBottom: 10,
alignItems: 'center'
},
text: {
fontFamily: "CircularStd-Book",
fontSize: 14,
color: '#2f354b',
textAlign: 'center'
}
});

REACT-NATIVE SyntaxError unterminated JSX contents (57:41)

Help, Im trying code an app an I can't seem to get past this error.
var React = require('react-native');
var {
View,
Text,
StyleSheet
} = React;
var styles = StyleSheet.create({
mainContainer: {
flex: 1,
padding: 30,
marginTop: 65,
flexDirection: 'column',
justifyContent: 'center',
backgroundColor: '#48BBEC'
},
title: {
marginBottom: 20,
fontSize: 25,
textAlign: 'center',
color: '#fff'
},
searchInput: {
height: 50,
padding: 4,
marginRight: 5,
fontSize: 23,
borderWidth: 1,
borderColor: 'white',
borderRadius: 8,
color: 'white'
},
buttonText: {
fontSize: 18,
color: '#111',
alignSelf: 'center'
},
button: {
height: 45,
flexDirection: 'row',
backgroundColor: 'white',
borderColor: 'white',
borderWidth: 1,
borderRadius: 8,
marginBottom: 10,
marginTop: 10,
alignSelf: 'stretch',
justifyContent: 'center'
},
});
class Main extends React.Component{
render(){
return (
<View style={styles.mainContainer}>
<Text> Testing the Router </Text>
</View>
)
}
};
module.exports = Main;
I believe the problem lies in this block
class Main extends React.Component{
render(){
return (
<View style={styles.mainContainer}>
<Text> Testing the Router </Text>
</View>
)
}
};
There error message is: SyntaxError /Users/tevinrivera/Rondeh/App/Components/Main.js: Unterminated JSX contents(57:41)

Your imports are wrong. You need to import React from 'react' and other things like View, Stylesheet etc from 'react-native'.
Something like will work:
import React from 'react';
import {
View,
Text,
StyleSheet
} from 'react-native';

Everything looks fine. Try changing this code
var React = require('react-native');
var {
View,
Text,
StyleSheet
} = React;
to this
const React = require('React');
const ReactNative = require('react-native');
const{
StyleSheet,
View,
Text
} = ReactNative;