I am using Native Base Text in 2 different components. In this one by default, the Text is shown in uppercase, unless I add uppercase={false}.
export const ActionButton: React.FunctionComponent<ActionButtonProps> = ({
style,
disabled,
buttonText,
onPress,
}) => {
return (
<Button rounded onPress={onPress} disabled={disabled} style={[styles.button, style]}>
<Text uppercase={false} style={styles.text}>{buttonText}</Text>
</Button>
);
};
const styles = StyleSheet.create({
button: {
width: moderateScale(160),
height: moderateScale(50),
backgroundColor: '#31C283',
justifyContent: 'center',
},
text: { color: 'white', fontSize: moderateScale(13, 0.7), fontWeight:'600' },
});
However, in the following component, text is lowercase, even without using uppercase=false. Why is it different in the two components? What am I doing wrong?
export const TripOptionsSelector: React.FunctionComponent = () => {
const navigation = useNavigation();
return (
<View style={styles.offerContainer}>
<Text style={styles.offerText}>Jetzt</Text>
<Text style={styles.offerText}>1 Person</Text>
<Text style={styles.offerText} onPress={()=>navigation.navigate('TripFilter')}>Filter</Text>
</View>
);
};
const styles = StyleSheet.create({
offerContainer: {
flexDirection: 'row',
},
offerText: {
color: 'white',
marginRight: moderateScale(20),
paddingHorizontal: 10,
fontSize: moderateScale(14),
borderColor: 'white',
borderWidth: 1,
borderRadius: 10,
alignItems: 'center',
justifyContent: 'center',
},
});
Codesandbox: https://snack.expo.io/#nhammad/trusting-hummus
There is nothing wrong with Text,
actually Native Base Button makes it's child's text Uppercase.
here is the source code https://github.com/GeekyAnts/NativeBase/blob/master/src/basic/Button.js
const children =
Platform.OS === PLATFORM.IOS
? this.props.children
: React.Children.map(this.props.children, child =>
child && child.type === Text
? React.cloneElement(child, {
uppercase: this.props.buttonUppercaseAndroidText === false
? false : variables.buttonUppercaseAndroidText,
...child.props
})
: child
);
Related
How to make empty input field when props.cityname is changed in react native. setSelectedCountry is holding the selected city name and I want to make it empty when props.cityname value change
import React, {useRef, useState} from 'react';
import {
FlatList,
Image,
Text,
TextInput,
TouchableOpacity,
View,
} from 'react-native';
const Test = props => {
const [search, setSearch] = useState('');
const [clicked, setClicked] = useState(false);
const [data, setData] = useState(props.cityNames);
const [selectedCountry, setSelectedCountry] = useState('');
const searchRef = useRef();
const onSearch = search => {
if (search !== '') {
const tempData = data.filter(item => {
return item.value.toLowerCase().indexOf(search.toLowerCase()) > -1;
});
setData(tempData);
} else {
setData(props.cityNames);
}
};
const isFound = data.some(element => {
if (element.value === selectedCountry) {
return true;
}
return false;
});
// React.useEffect(() => {
// setSelectedCountry('');
// }, [isFound]);
return (
<View>
<TouchableOpacity
style={{
paddingHorizontal: 16,
paddingVertical: 20,
borderRadius: 10,
backgroundColor: '#F2F4F7',
flexDirection: 'row',
justifyContent: 'space-between',
alignItems: 'center',
}}
onPress={() => {
setClicked(!clicked);
}}>
<Text style={{fontWeight: '600'}}>
{selectedCountry == '' ? 'Select Country' : selectedCountry}
</Text>
{clicked ? (
<Image
source={require('./upload.png')}
style={{width: 20, height: 20}}
/>
) : (
<Image
source={require('./dropdown.png')}
style={{width: 20, height: 20}}
/>
)}
</TouchableOpacity>
{clicked ? (
<View
style={{
marginTop: 10,
backgroundColor: '#F2F4F7',
borderRadius: 10,
paddingHorizontal: 0,
paddingVertical: 0,
borderColor: '#F2F4F7',
maxHeight: 300,
}}>
<TextInput
placeholder="Search.."
value={search}
ref={searchRef}
onChangeText={txt => {
onSearch(txt);
setSearch(txt);
}}
style={{
width: '90%',
alignSelf: 'center',
borderWidth: 1,
borderColor: 'white',
borderRadius: 10,
marginTop: 20,
paddingLeft: 16,
}}
/>
<FlatList
nestedScrollEnabled
data={data}
renderItem={({item, index}) => {
return (
<TouchableOpacity
style={{
width: '85%',
alignSelf: 'center',
paddingVertical: 16,
justifyContent: 'center',
}}
onPress={() => {
setSelectedCountry(item.value);
setClicked(!clicked);
onSearch('');
setSearch('');
}}>
<Text style={{fontWeight: '600'}}>{item.value}</Text>
</TouchableOpacity>
);
}}
/>
</View>
) : null}
</View>
);
};
export default Test;
**I want to add max-height so that the dropdown does not go down **
If I removed max-height then it will solve the issues but the length of the dropdown field is large so I need nice solutions
Can you check this snack
just make a little tweaks for ur code
https://snack.expo.dev/#sharqiyem/custom-dropdown
It's scrollable.
How to change the style in React Native?
I need to change the color of the text when it is true or false
here is my code:
Styles Area
LIVE:{
color: "red"
},
Comp: {
color: "green"
},
Main
<Text style={MyCardStyle.AnyText}>{isLive == false ? /* MyCardStyle.Comp */ : /* MyCardStyle.LIVE */ }</Text>
// The commented out codes have error as "Objects are not valid as a React child"
Props
<MyMatchCard
isLive={true}
/>
Here i want to change the color of the Text to green when its false or red when its true
How to actually apply the color without getting an error?
One way to do it is to change the style object to function instead. That function will take a parameter that will be used to define the text color:
import { Text, View, StyleSheet } from 'react-native';
import Constants from 'expo-constants'
// or any pure javascript modules available in npm
import { Card } from 'react-native-paper';
const MyText = ({isLive}) => {
return (
<Text style={styles.text(isLive)}>
Change code in the editor and watch it change on your phone! Save to get a shareable url.
</Text>
)
}
export default function App() {
return (
<View style={styles.container}>
<MyText isLive />
<MyText />
</View>
);
}
const styles = StyleSheet.create({
container: {
flex: 1,
justifyContent: 'center',
paddingTop: Constants.statusBarHeight,
backgroundColor: '#ecf0f1',
padding: 8,
},
text: (isLive) => ({
margin: 24,
fontSize: 18,
fontWeight: 'bold',
textAlign: 'center',
color: isLive ? 'green' : 'black'
}),
});
You can also pass the condition to the style prop
const MyText = ({isLive}) => {
return (
<Text style={{color: isLive? 'green' : 'red' }}>
Your text
</Text>
)
}
As you can see in the image below, I have to give some top margin in order to "not" hide my half of the content under the navigation header, isn't header supposed to be a "safe area" for the below content, to be on the safe side I provided the SafeAreaView but still my content goes under the Header and unfortunately I have to give some hardcoded margin top value to avoid hiding.
The above image is when I comment marginTop.
Above image is when I add marginTop: 70
Code:
NotificationScreen.tsx:
import {
View,
SafeAreaView,
Text,
StatusBar,
} from 'react-native';
import Animated, {FadeIn, FadeOut} from 'react-native-reanimated';
import OrderItem from '../../components/OrderItem';
const NotificationScreen = () => {
const [orders, setOrders] = useState([]);
useEffect(() => {
// calling API...
}, []);
return (
<SafeAreaView style={styles.container}>
<StatusBar backgroundColor="transparent" translucent />
<Text style={{color: 'lightgray', fontSize: 18}}>My Orders: </Text>
<Animated.FlatList
data={orders}
entering={FadeIn}
leaving={FadeOut}
contentContainerStyle={{
alignItems: 'center',
}}
keyExtractor={(_: any, index) => 'key' + index}
renderItem={({item}) => <OrderItem key={item.id} data={item} />}
/>
</SafeAreaView>
);
};
const styles = StyleSheet.create({
container: {
marginTop: 70, // if I remove this, the content goes under the header as shown in image.
flex: 1,
padding: 10,
backgroundColor: COLORS.primary,
},
});
export default NotificationScreen;
One more query, why my OrderItem not taking the full width of FlatList (see image, the gray box is not takin the full width...), I have provided width: 100% to my OrderItem container:
OrderItem.tsx:
const OrderItem = ({data}) => {
return (
<View style={styles.container}>
<View style={styles.textBlock}>
<Text style={styles.label}>Strategy: </Text>
<Text style={styles.info}>{data.strategyTitle}</Text>
</View>
// ... same views as shown in image
</View>
);
};
const styles = StyleSheet.create({
container: {
width: '100%',
paddingVertical: 10,
paddingHorizontal: 10,
alignItems: 'center',
justifyContent: 'space-between',
backgroundColor: COLORS.lightGray,
borderRadius: 10,
},
textBlock: {
flexDirection: 'row',
alignItems: 'center',
justifyContent: 'space-between',
},
label: {
color: 'grey',
fontSize: 16,
},
info: {
color: 'white',
fontSize: 16,
},
});
export default OrderItem;
The SafeAreaView does not work currently for Android devices. You need to have something like this to avoid this issue:
import { Platform,StatusBar } from "react-native";
const styles = StyleSheet.create({
container: {
paddingTop: Platform.OS == "android" ? StatusBar.currentHeight : 0,
},
});
<SafeAreaView style={styles.container}>
</SafeAreaView>
And for the OrderItem not taking all available width, remove from Animated.FlatList this:
contentContainerStyle={{alignItems: 'center'}}
Hello, I am new to React native and would like to get a help with this situation.
How can I create this kind of navigation ?
It's not a duplicate of Similar question
I don't want to use CreateBottomTabNavigator, because as you can see, navigation bars are at the top.
You will have to use a custom tabbar to implement this.
You can see the code for the custom tab bar here
function MyTabBar({ state, descriptors, navigation, position }) {
return (
<View style={{ flexDirection: 'row', backgroundColor: 'blue' }}>
{state.routes.map((route, index) => {
const { options } = descriptors[route.key];
const label =
options.tabBarLabel !== undefined
? options.tabBarLabel
: options.title !== undefined
? options.title
: route.name;
const isFocused = state.index === index;
const onPress = () => {
const event = navigation.emit({
type: 'tabPress',
target: route.key,
});
if (!isFocused && !event.defaultPrevented) {
navigation.navigate(route.name);
}
};
const onLongPress = () => {
navigation.emit({
type: 'tabLongPress',
target: route.key,
});
};
return (
<TouchableOpacity
accessibilityRole="button"
accessibilityState={isFocused ? { selected: true } : {}}
accessibilityLabel={options.tabBarAccessibilityLabel}
testID={options.tabBarTestID}
onPress={onPress}
onLongPress={onLongPress}
style={{ flex: 1, alignItems: 'center', justifyContent: 'center' }}>
<Animated.Text
style={{
color: isFocused ? 'white' : 'grey',
marginVertical: 10,
}}>
{label}
</Animated.Text>
<View
style={{
width: '80%',
backgroundColor: isFocused ? 'white' : 'transparent',
height: 5,
marginTop: 'auto',
}}></View>
</TouchableOpacity>
);
})}
</View>
);
}
And you will have to use it in your Navigator like below
<Tab.Navigator tabBar={(props) => <MyTabBar {...props} />}>
Output will be
You can try out the snack for this
https://snack.expo.io/am8bsZI-4
You can change the colors, height and margins as per you need.
Other options are to use the renderIndicator or the indicatorStyle but those wont take the width properly so the above would be the best option.
I made a reusable component Button.js and I'm importing it on two different screens. The button looks the same, but on the first screen I need it to be position: 'absolute' and on the second one position: 'relative' (the default).
How do I add the position to be absolute on the first screen? I tried to add the styling on FirstPage.js but it does not work. How do I overwrite the style that is defined in Button.js?
Button.js:
import React from 'react';
import { Text, TouchableOpacity } from 'react-native';
const Button = ({ position, onPress, children }) => {
const { buttonStyle, textStyle } = styles;
return (
<TouchableOpacity onPress={onPress} style={buttonStyle, {'position': position}}>
<Text style={textStyle}>{children}</Text>
</TouchableOpacity>
);
};
Button.defaultProps = {
position: 'relative',
}
const styles = {
textStyle: {
alignSelf: 'center',
color: '#F44336',
fontSize: 16,
},
buttonStyle: {
zIndex: 2,
width: 100,
backgroundColor: '#FFF',
}
};
export { Button };
You can pass props, something like this (Button.js) (edited according to posted code):
import React from 'react';
import { Text, TouchableOpacity } from 'react-native';
const Button = ({ position, onPress, children }) => {
const { buttonStyle, textStyle } = styles;
const style = {...buttonStyle, position };
return (
<TouchableOpacity onPress={onPress} style={style}>
<Text style={textStyle}>{children}</Text>
</TouchableOpacity>
);
};
Button.defaultProps = {
position: 'relative',
}
const styles = {
textStyle: {
alignSelf: 'center',
color: '#F44336',
fontSize: 16,
},
buttonStyle: {
zIndex: 2,
width: 100,
backgroundColor: '#FFF',
}
};
export { Button };
Your button of course looks different, this is just an outline of what you could do (basically just using props).
This is REUSABLE Button as touchableOpacity.
export const NormalThemeButton = (props) => {
return (
<TouchableOpacity
style={[{ ...props.style, ...styles.normalThemeBtn }]}
style={[{ alignItems: props.align }, styles.anchor]}
onPress={props.onPress} >
<CustomText text={props.text} l bold style={{
textAlign: 'center',
color: theme['blackColor']
}} />
{props.children}
</TouchableOpacity >
);
};
This is where this RESUABLE Button is been used.
style={{ ...styles.openArrivedButton }}
text={Lng.instance.translate('useWaze')}
onPress={() => { Waze() }}/>
Hope You find it helpful.