I watched a tutorial about React Native on YouTube.
I have built a simple stopper app. (Android) The problem is, in the release build, one of the letters is missing. I tried to build another simple app with just having "Hello" and in the release build in my phone instead of showing "Hello" I get "Hell".
Pictures:
Development build using Nexus 6 (AVD):
Release build with LG G4 (physical):
I don't know why this is happening. I appreciate any advice and help.
Edit: index.android.js:
import React, { Component } from 'react'
import {
AppRegistry,
StyleSheet,
View,
Text,
TouchableHighlight
} from 'react-native'
class flexbox extends Component {
render() {
return (
<View style={styles.container}>
<View style={[styles.header]}>
<View style={[styles.timeWrapper]}>
<Text style={styles.timer}>00:00.00</Text>
</View>
<View style={[styles.buttonWrapper]}>
<TouchableHighlight onPress={() => console.log('Start')} underlayColor="#2ecc71" style={[styles.button, styles.startButton]}>
<Text>Start</Text>
</TouchableHighlight>
<TouchableHighlight onPress={() => console.log('Lap')} underlayColor="#1abc9c" style={[styles.button, styles.lapButton]}>
<Text>Lap</Text>
</TouchableHighlight>
</View>
</View>
<View style={[styles.footer]}>
<Text>Laps</Text>
</View>
</View>
)
}
}
const styles = StyleSheet.create({
container: {
flex: 1
},
header: {
flex: 1
},
footer: {
flex: 1
},
timeWrapper: {
flex: 5,
justifyContent: 'center',
alignItems: 'center'
},
buttonWrapper: {
flex: 3,
flexDirection: 'row',
justifyContent: 'space-around',
alignItems: 'center'
},
timer: {
fontSize: 60,
color: 'black'
},
button: {
borderWidth: 2,
height: 100,
width: 100,
borderRadius: 50,
justifyContent: 'center',
alignItems: 'center'
},
startButton: {
borderColor: '#2ecc71'
},
lapButton: {
borderColor: '#1abc9c'
}
})
AppRegistry.registerComponent('flexbox', () => flexbox)
You haven't supplied any code, but I'm guessing you have created a view with exact width and height, and in order to have the text in the middle, you added padding.
Here's an example of a working circle with text:
import React, { Component } from 'react';
import { Text, View, StyleSheet } from 'react-native';
export default class App extends Component {
render() {
return (
<View style={styles.container}>
<View style={styles.circle}>
<Text>Hello</Text>
</View>
</View>
);
}
}
const styles = StyleSheet.create({
container: {
flex: 1,
alignItems: 'center',
justifyContent: 'center',
backgroundColor: '#ecf0f1',
},
circle: {
width: 50,
height: 50,
borderRadius: 25,
justifyContent: 'center',
alignItems: 'center',
borderColor: 'red',
borderWidth: 3,
}
});
Or see example in sketch
Related
Text is not moving, I tried to use justifyContent, alignItems and textAlign but not working. Working on visual studio and react-native, using my phone to emulator.
you can see the code ^^
I hope that u can help me
import React, { Component } from 'react';
import {
Platform,
StyleSheet,
Text,
View,
TouchableOpacity,
TextInput,
Image,
Picker,
ImageBackground
} from 'react-native';
export default class App extends Component {
render() {
return (
<ImageBackground
source={require('./resim.jpg')}
style={styles.container}>
<View styles={styles.overlayContainer}>
<View styles={styles.top}>
<Text style={styles.header}>FIRST</Text>
</View>
</View>
</ImageBackground>
);
}
}
const styles = StyleSheet.create({
container: {
flex: 1,
width: '100%',
height: '100%',
},
overlayContainer: {
flex: 1,
backgroundColor: 'rgba(47,163,218, .4)',
},
top: {
height: '50%',
alignItems: 'center',
justifyContent: 'center',
backgroundColor: 'white'
},
header: {
color: '#fff',
fontSize: 28
}
});
Please help me guys please.
overlayContainer: { flex: 1,backgroundColor:'rgba(47,163,218, .4)' },
top: { height: '50%', alignItems: 'center',justifyContent: 'center',backgroundColor: 'white' },
header: { color: '#fff', fontSize: 28 }
Try:
Add width size for top style and overlayContainer style
enter image description here
Current Behaviour
The KeyBoardAvoidingView hides the Login button.
Its the same on Android and on iPhone.
On an Android Tablet It hides the Login button but since the screen is large you can see the button halfway from the top.
Expected Behaviour
I want the Login button at the bottom to move into the app frame when user wants to input his login details.
App.js
import React from 'react';
import { StyleSheet, Text, View,TouchableOpacity, AppRegistry} from 'react-native';
import { StackNavigator } from 'react-navigation'; // 1.0.0-beta.23
import Login from './screens/Login';
class App extends React.Component {
render() {
return (
<View
style={styles.container} >
<View style={styles.boxContainer}>
<View style = {[styles.boxContainer, styles.boxOne]}>
<Text style={styles.paragraph}>Tido</Text>
</View>
<View style={styles.boxContainerToggle}>
<TouchableOpacity style={[styles.boxContainer, styles.boxTwo]} onPress={() => this.props.navigation.navigate('Login')}>
<Text style={styles.paragraph}>Login</Text>
</TouchableOpacity>
<TouchableOpacity style={[styles.boxContainer, styles.boxThree]}>
<Text style={styles.paragraph}>Sign Up</Text>
</TouchableOpacity>
</View>
</View>
</View>
);
}
}
const styles = StyleSheet.create({
container: {
flex: 1,
flexDirection: 'column',
},
boxContainer: {
flex: 1, // 1:3
alignItems: 'center',
justifyContent: 'center',
backgroundColor: 'white',
},
boxContainerToggle: {
flex: 1,
flexDirection: 'row'
},
boxOne: {
flex: 6, // 5:6
justifyContent: 'space-around',
alignItems: 'center',
},
boxTwo: {
flex: 1, // 1:6
backgroundColor: 'powderblue',
flexDirection: 'row',
width: '50%',
height: '100%'
},
boxThree: {
flex: 1, // 1:6
flexDirection: 'row',
backgroundColor: 'skyblue',
width: '50%',
height: '100%'
},
paragraph: {
margin: 24,
fontSize: 27,
fontWeight: 'bold',
textAlign: 'center',
color: '#34495e',
},
});
const appScreens = StackNavigator({
Index: { screen: App },
Login: { screen: Login }
})
AppRegistry.registerComponent('tido', () => appScreens);
export default appScreens;
Login.js
import React from 'react';
import {StyleSheet, View, TextInput, TouchableOpacity, Text, KeyboardAvoidingView} from 'react-native';
export default class Login extends React.Component {
constructor(props) {
super(props);
}
render() {
return(
<KeyboardAvoidingView behavior="padding" style={styles.container}>
<View style={styles.boxContainer}>
<View style = {[styles.boxContainer, styles.boxOne]}>
<TextInput
style={styles.inputBox}
placeholder="username,email or phone"
placeholderTextColor="#00000030"
underlineColorAndroid="transparent">
</TextInput>
<TextInput
style={styles.inputBox}
secureTextEntry={true}
placeholder="password"
placeholderTextColor="#00000030"
underlineColorAndroid="transparent">
</TextInput>
</View>
<View style={styles.boxContainerToggle}>
<TouchableOpacity
style={[styles.boxContainer, styles.boxTwo]}>
<Text style={styles.paragraph}>Login</Text>
</TouchableOpacity>
</View>
</View>
</KeyboardAvoidingView>
);
}
}
const styles = StyleSheet.create({
container: {
flex: 1,
},
boxContainer: {
flex: 1, // 1:3
justifyContent: 'center',
},
boxContainerToggle: {
flex: 1,
flexDirection: 'row',
},
boxOne: {
flex: 5, // 5:6
backgroundColor: 'white',
padding: 20
},
boxTwo: {
flex: 1, // 1:6
backgroundColor: '#252525',
flexDirection: 'row',
width: '100%',
height: '100%',
alignItems: 'center'
},
inputBox: {
height: 40,
backgroundColor: '#B6B6B630',
marginBottom: 10,
paddingHorizontal: 10,
},
paragraph: {
fontSize: 27,
fontWeight: 'bold',
textAlign: 'center',
color: '#FFFFFF',
},
});
The problem is that KeyboardAvoidingView cannot correctly apply padding if it's children doesn't have plain size set. In this particular case you need to figure out the screen dimenson and apply screen height (minus navigation bar height) to your root View style:
import { Dimensions } from 'react-native';
const { screenHeight: height } = Dimensions.get('window');
const styles = StyleSheet.create({
...
containerContent: {
height: screenHeight - navBarHeight,
justifyContent: 'center',
}
...
},
And apply it in your render method:
render() {
return (
<KeyboardAvoidingView behavior="padding" style={styles.container}>
<View style={styles.containerContent}>
...
</View>
</KeyboardAvoidingView>
);
}
I am still seeing that on keyboard open the toolbar is being pushed up out of visible area. This is the code :
<KeyboardAvoidingView style={styles.containerContent}>
<View style={styles.containerContent}>
<GiftedChat
messages={}
onSend={this.onSend}
renderAvatar={null}
user={{
_id: 1,
}}
imageStyle={{}}
/>
</View>
</KeyboardAvoidingView>
const styles = StyleSheet.create({
containerContent: {
height: Dimensions.get('window').height - kHeaderHeight,
justifyContent: 'center',
flex: 1,
},
});
I'm trying to make two nested swipers on Android with React Native, using react-native-swiper. Each swiper works correctly when is separate, but when I add one to the other, the inner nested swiper doesn't show any content. It's a little bit weird, it recognized its children, I can swipe but Views are not rendered. Here is my simple demonstration example:
import React from 'react'
import {
Text,
View
} from 'react-native'
import Swiper from 'react-native-swiper'
const Dimensions = require('Dimensions');
const window = Dimensions.get('window');
var styles = {
wrapper: {
backgroundColor: 'transparent'
},
innerSwiper: {
width: window.width,
height: window.height / 3,
marginTop: 60,
backgroundColor: '#92BBD9'
},
slide1: {
flex: 1,
alignItems: 'center',
backgroundColor: '#9DD6EB'
},
slide2: {
flex: 1,
justifyContent: 'center',
alignItems: 'center',
backgroundColor: '#97CAE5'
},
slide3: {
flex: 1,
justifyContent: 'center',
alignItems: 'center',
backgroundColor: '#92BBD9'
},
text: {
color: '#fff',
fontSize: 30,
fontWeight: 'bold'
}
}
export default () =>
<Swiper style={styles.wrapper} showsButtons>
<View style={styles.slide1}>
<View style={styles.innerSwiper}>
<Swiper style={styles.wrapper} showsButtons>
<View style={styles.slide1}>
<Text style={styles.text}>Hello Swiper</Text>
</View>
<View style={styles.slide2}>
<Text style={styles.text}>Beautiful</Text>
</View>
<View style={styles.slide3}>
<Text style={styles.text}>And simple</Text>
</View>
</Swiper>
</View>
</View>
<View style={styles.slide2}>
<Text style={styles.text}>Beautiful</Text>
</View>
<View style={styles.slide3}>
<Text style={styles.text}>And simple</Text>
</View>
</Swiper>
I've recently added react-native-navigation to my project, and now I can't get imported stylesheet to work. What I'm trying to do is this:
import screenstyles from './screenstyles';
class Screen extends Component {
render() {
return (
<View style={screenstyles.container}>
<Text style={screenstyles.basictext}>Text I want to display</Text>
</View>
);
}
screenstyles.js:
import EStyleSheet from 'react-native-extended-stylesheet';
export default EStyleSheet.create({
container: {
flex: 1,
alignItems: 'center',
justifyContent: 'center',
backgroundColor: '$primaryBlue'
},
basictext: {
color: "#fff",
fontSize: 34
}
});
But I simply get a default white screen with unstyled text.
The only way I get any sort of imported styling to work at the moment is by doing this
import {Container, styles} from '../components/Container';
class Screen extends Component {
render() {
return (
<Container backgroundColor={"red"}>
</Container>
);
}
}
Container.js:
import React from 'react';
import { View, Text, StyleSheet, TouchableOpacity } from 'react-native';
const styles = StyleSheet.create({
container: {
flex: 1,
alignItems: 'center',
justifyContent: 'center',
backgroundColor: 'blue'
},
text: {
color: '#fff',
fontSize: 30,
fontWeight: '500'
}
});
const Container = ({onPress, backgroundColor, texttest}) => (
<View style={[styles.container, {backgroundColor}]}>
<Text style={styles.text}></Text>
</View>
);
export default Container;
This approach isn't the best because it makes it much more difficult to use the same stylesheet for each screen but still being able to customize the screen.
Try rewriting the screenstyles.js file as follows:
const React = require('react-native-extended-stylesheet');
const { EStyleSheet } = React;
var styles = EStyleSheet.create({
container: {
flex: 1,
alignItems: 'center',
justifyContent: 'center',
backgroundColor: '$primaryBlue'
},
basictext: {
color: "#fff",
fontSize: 34
}
});
module.exports = styles;
I am using react-native .My input field is not display on full width why ? But when I check on IOS it works correctly display input field on full width .
here is my code
https://rnplay.org/apps/aHRkHA
import React from 'react';
import {
registerComponent,
} from 'react-native-playground';
import {
StatusBar,
StyleSheet,
Text,
TextInput,
View,
} from 'react-native';
class App extends React.Component {
render() {
return (
<View style={styles.container}>
<Text style={styles.heading}> Login</Text>
<TextInput
style={styles.loginInput}
placeholder="Type here to translate!"
/>
</View>
);
}
}
const styles = StyleSheet.create({
container: {
backgroundColor: '#EF501E',
flex: 1,
alignItems: 'center'
},
logo: {
width: 50,
height: 50
},
heading: {
fontSize: 30,
marginTop: 20
},
loginInput: {
height: 50,
borderWidth: 1,
borderColor: '#33090C',
flexDirection: 'row',
justifyContent: 'center',
}
});
registerComponent(App);
Try overriding the alignItems: 'center' of the parent with alignSelf: 'stretch' for <TextInput>:
<View style={styles.container}>
...
<View style={{alignSelf: 'stretch'}}>
<TextInput
style={styles.loginInput}
placeholder="Type here to translate!"
/>
</View>
</View>