Styles are different on IOS and Android in React Native - react-native

My render function is as follows :
render() {
return (
<View style={styles.container}>
<Camera
style={styles.camera}
ref={(cam) => {
this.camera = cam;
}}
onZoomChanged={this.onZoomChanged.bind(this)}
onFocusChanged={this.onFocusChanged.bind(this)}
torchMode={this.state.torch}
flashMode={this.state.flash}>
{this.imageOverlay()}
</Camera>
<View style={styles.commandBar}>
<TouchableHighlight onPress={this.fromLocal.bind(this)}>
<View style={styles.capture}>
<Icon .../>
</View>
</TouchableHighlight>
<TouchableHighlight onPress={this.takePicture.bind(this)}>
<View style={styles.captureN}>
<Icon style={{transform: [{rotate: '90deg'}],}} .../>
</View>
</TouchableHighlight>
<TouchableHighlight onPress={this.onTorchToggle.bind(this)}>
<View style={styles.capture}>
<Icon ... />
</View>
</TouchableHighlight>
</View>
</View>
);
}
I removed I few TouchableHighlight from the code above to make te code smaller.
And the styles are as follows:
const styles = StyleSheet.create({
container: {
flex: 1,
flexDirection: 'column'
},
camera: {
justifyContent: 'flex-end',
alignItems: 'center',
width: dw.width,
height: dw.height,
flexDirection:'column'
},
commandBar: {
flex: 0,
bottom: 85,
flexDirection: 'row',
alignItems: 'center',
justifyContent: "center"
},
capture: {
backgroundColor: '#444',
opacity: 0.7,
borderRadius: 5,
padding: 8,
paddingTop: 5,
paddingBottom: 5,
width: 55,
marginLeft: 8,
alignItems: 'center',
transform: [{rotate: '90deg'}],
},
firstCapture: {
marginLeft: 0
},
captureN: {
backgroundColor: '#444',
opacity: 0.7,
borderRadius: 5,
padding: 10,
width: 60,
marginLeft: 8,
alignItems: 'center'
},
imageContainer: {
flexDirection: 'row',
alignItems: 'flex-end'
},
innerImage: {
flex: 0,
height: dw.width,
width: dw.height,
marginBottom: 170,
resizeMode: 'contain',
transform: [{rotate: '90deg'}]
}
});
I want to take the photo with an image overlay in the landscape mode. On IOS it works fine, it looks as :
But on Android it doesn't work, I'm getting the screen as follows:
Any idea how to solve it?

Maybe you could try using different styles for Android and iOS with Platform. For example:
import { Platform, StyleSheet } from 'react-native';
const styles = StyleSheet.create({ height: (Platform.OS === 'ios') ? 200 : 100, });
Source: React Native Platform

Related

react-native-awesome-gallery shows only one image without gesture possible

related to : https://github.com/Flair-Dev/react-native-awesome-gallery
I tried many things, but nothing is working.
I made the gesture and reanimation installation as wanted.
what I have :
import MaterialCommunityIcons from 'react-native-vector-icons/MaterialCommunityIcons';
import Gallery from 'react-native-awesome-gallery';
import { GestureHandlerRootView } from 'react-native-gesture-handler';
const ModalInfos = (props) => {
const [showMenu, setShowMenu] = useState(false)
return (
<View style={style.centeredView}>
<View style={style.modalView}>
<Text>{props.infos.name}</Text>
<Text> lots of infos here</Text>
....
....
....
<Text style={{ fontWeight: 'bold' }}> check menu </Text>
<TouchableOpacity
onPress={() => setShowMenu(true)}
>
<MaterialCommunityIcons name="book-open-variant" size={20} color={'#fff'} />
</TouchableOpacity>
</View>
{
showMenu &&
<View style={style.gallery}>
<GestureHandlerRootView style={{ flex: 1 }}>
<Gallery
data={["http://10.0.2.2:8080/images/menu/" + props.infos.barInfos.photomenu1, "http://10.0.2.2:8080/images/menu/" + props.infos.barInfos.photomenu2]}
onIndexChange={(newIndex) => {
console.log(newIndex);
}}
/>
</GestureHandlerRootView>
</View>
}
</View>
)
}
const style = StyleSheet.create({
centeredView: {
flex: 1,
justifyContent: "center",
alignItems: "center",
marginTop: 22,
},
modalView: {
width: '95%',
margin: 20,
backgroundColor: "white",
borderRadius: 20,
padding: 35,
alignItems: "center",
shadowColor: "#000",
shadowOffset: {
width: 0,
height: 2
},
shadowOpacity: 0.25,
shadowRadius: 4,
elevation: 5
},
gallery: {
flex: 1,
width: "100%",
height: "100%",
position: 'absolute',
zIndex: 10,
backgroundColor: '#202124e6',
}
});
export default ModalInfos;
With or without the GestureHandlerRootViewits the same result, i can see only the first image, and I can't do anything, no swipe, no zoom, not gesture.
I switched to react-native-image-viewing
works more than perfectly

Slider height is not changing with height property in react-native-swiper

so I'm fairly new to react-native. I'm trying to implement a carousel with react-native-swiper.
Issue -
I want to set the carousel height to 150px, for this I set the property height to 150px, with this the carousel height got changed to 150px but when I try to render a text component below carousel, it is not rendering just below the carousel.
import React from 'react';
import { View, Text, StyleSheet } from "react-native";
import Swiper from 'react-native-swiper';
const styles = StyleSheet.create({
wrapper: { backgroundColor: "black", height: 150 },
slide1: {
height: 150,
justifyContent: 'center',
alignItems: 'center',
backgroundColor: '#9DD6EB'
},
slide2: {
height: 150,
justifyContent: 'center',
alignItems: 'center',
backgroundColor: '#97CAE5'
},
slide3: {
height: 150,
justifyContent: 'center',
alignItems: 'center',
backgroundColor: '#92BBD9'
},
text: {
color: '#fff',
fontSize: 30,
fontWeight: 'bold'
}
})
const HomeScreen_ = () => {
return (
<>
<Swiper
style={styles.wrapper}
height={150}
showsButtons
autoplay
paginationStyle={{ height: 8, position: 'absolute', top: 130 }}
activeDot={
<View
style={{
backgroundColor: '#c3383833', width: 8,
height: 8, borderRadius: 4, marginLeft: 3,
marginRight: 3, marginTop: 3, marginBottom: 3
}} />
}>
<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 >
<Text style={{ height: 100, color: "black", }}>Just a Random Text</Text>
</>
)
};
export default HomeScreen_;
you can check this sample, in React Native, we have covered any component using View
import React from 'react';
import {View, Text, StyleSheet, SafeAreaView} from 'react-native';
import Swiper from 'react-native-swiper';
const SwiperExample = () => {
return (
<>
<View style={{flex: 0.3}}> // here
<Swiper
style={styles.wrapper}
showsButtons
autoplay
paginationStyle={{height: 8, position: 'absolute', top: 130}}
activeDot={
<View
style={{
backgroundColor: '#c3383833',
width: 8,
height: 8,
borderRadius: 4,
marginLeft: 3,
marginRight: 3,
marginTop: 3,
marginBottom: 3,
}}
/>
}>
<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>
<Text style={{height: 100, color: 'black'}}>Just a Random Text</Text>
</>
);
};
const styles = StyleSheet.create({
wrapper: {backgroundColor: 'black', flex: 1},
slide1: {
height: 150,
justifyContent: 'center',
alignItems: 'center',
backgroundColor: '#9DD6EB',
},
slide2: {
height: 150,
justifyContent: 'center',
alignItems: 'center',
backgroundColor: '#97CAE5',
},
slide3: {
height: 150,
justifyContent: 'center',
alignItems: 'center',
backgroundColor: '#92BBD9',
},
text: {
color: '#fff',
fontSize: 30,
fontWeight: 'bold',
},
});
export default SwiperExample;
I solved this issue by removing the height property in the wrapper object of StyleSheet and passing containerStyle={{ height: 150, flex: 0 }} as a prop in Swiper

Touchables in react native

I am trying to add some space in the middle of two touchable components wrapped in a view
How do i go about doing that, I will include my style sheet
return (
<>enter code here
<View style={styles.container}>
<View style={styles.scrollContainer}>
<ScrollView
horizontal
pagingEnabled
showsHorizontalScrollIndicator={false}
>
{images.map((image) => (
<Image key={image} style={styles.image} source={image} />
))}
</ScrollView>
</View>
<View style={styles.btn}>
`enter code here`<LinearGradient
colors={["#0A5640", "#0A5640"]}
style={{ alignItems: "center", borderRadius: 10 }}
>
<TouchableOpacity onPress={() => navigation.navigate("SignIn")}>
<Text style={styles.btnAuth}>Sign In</Text>
</TouchableOpacity>
</LinearGradient>
<LinearGradient
colors={["#FFC72A", "#FFC72A"]}
style={{ alignItems: "center", borderRadius: 10 }}
>
<TouchableOpacity
onPress={() => navigation.navigate("CreateAccount")}
>
<Text style={styles.btnAuth}>Sign Up</Text>
</TouchableOpacity>
</LinearGradient>
</View>
</View>
</>
);
};
const styles = StyleSheet.create({
container: {
backgroundColor: "#0A5640",
},
scrollContainer: {
height: "100%",
},
image: {
width,
height: "100%",
},
btnAuth: {
fontSize: 18,
fontWeight: "bold",
paddingHorizontal: 60,
paddingVertical: 10,
color: "#fff",
marginLeft: 10,
},
btn: {
color: "#fff",
marginTop: 70,
flexDirection: "row",
alignItems: "center",
justifyContent: "space-around",
alignContent: "space-between",
zIndex: 200,
paddingRight: 10,
paddingLeft: 10,
bottom: 3,
position: "absolute",
},
});
Did you mean the space between SignIn and SignUp button? You can use flex or width to define the touchableOpacity width. Is this something that you tried to achieve?
import * as React from 'react';
import {Text,View,StyleSheet,TouchableOpacity,}from 'react-native';
export default function App() { return (
<View style={styles.container}>
<View style={styles.btn}>
<TouchableOpacity style={styles.btnAuth}>
<Text style={{color:'#000', fontSize:18}}>Sign In</Text>
</TouchableOpacity>
<TouchableOpacity style={styles.btnAuth}>
<Text style={{color:'#000', fontSize:18}}>Sign Up</Text>
</TouchableOpacity>
</View>
</View> ); }
const styles = StyleSheet.create({ container: { backgroundColor: '#0A5640', flex:1 }, btnAuth: {
padding: 20,
width : '45%',
alignItems:'center',
backgroundColor:'yellow' }, btn: {
color: '#fff',
width: '100%',
flexDirection: 'row',
alignItems: 'center',
justifyContent: 'space-around',
bottom: 3,
position: 'absolute', }, });

react native 2 colors as background

I'm trying to make 2 colors of background using flex, and it seems to work good but I want to make the button on the middle as in the photo, where I need to insert the button in the code?
i want it to be like this:
return (
<View style={container}>
<View style={leftContainer}>
</View>
<View style={rightContainer}>
</View>
<Button
title="button"/>
</View>
)
}
}
const styles = StyleSheet.create({
container: {
flex: 1,
flexDirection:'row'
},
leftContainer:{
flex:1,
backgroundColor: '#ca8afa',
},
rightContainer:{
flex:1,
backgroundColor: '#96d0e3'
},
addButton: {
justifyContent: 'center',
alignItems: 'center',
position: 'absolute',
bottom: 20,
right: 20,
zIndex: 1111,
width: calcSize(192 / 2),
height: calcSize(192 / 2)
}
})
the problem is that the button is also in the row now and not in the middle,
how can i fix it?
Here's a live demo of a possible solution: https://snack.expo.io/HJFL7A3ez
Edit - Adding the code here as well:
export default class App extends Component {
render() {
return (
<View style={styles.container}>
<View style={styles.leftContainer}>
</View>
<View style={styles.rightContainer}>
</View>
<View style={styles.buttonContainer}>
<Button style={styles.addButton} title="button"/>
</View>
</View>
)
}
}
const styles = StyleSheet.create({
container: {
flex: 1,
flexDirection:'row'
},
leftContainer:{
flex:1,
backgroundColor: '#ca8afa',
},
rightContainer:{
flex:1,
backgroundColor: '#96d0e3'
},
buttonContainer: {
position: 'absolute',
width: '100%',
height: '100%',
justifyContent: 'center',
alignItems: 'center',
},
addButton: {
zIndex: 1111,
width: 200
}
})

In React Native, how do I put a view on top of another view, with part of it lying outside the bounds of the view behind?

I'm trying to make a layout as per below with React Native.
How do I specify the position of B relative to A?
With iOS Interface Builder and autoconstraints, this can very explicitly be done and is a breeze. It's not so obvious how one might achieve this with React Native.
Add the following style to the "floating" view:
position: 'absolute'
You may also need to add a top and left value for positioning.
The above solutions were not working for me. I solved it by creating a View with the same background colour as the parent and added negative margin to move the image upwards.
<ScrollView style={{ backgroundColor: 'blue' }}>
<View
style={{
width: '95%',
paddingLeft: '5%',
marginTop: 80,
height: 800,
}}>
<View style={{ backgroundColor: 'white' }}>
<Thumbnail square large source={{uri: uri}} style={{ marginTop: -30 }}/>
<Text>Some Text</Text>
</View>
</View>
</ScrollView>
and I got the following result.
You can use zIndex for placing a view on top of another. It works like the CSS z-index property - components with a larger zIndex will render on top.
You can refer: Layout Props
Snippet:
<ScrollView>
<StatusBar backgroundColor="black" barStyle="light-content" />
<Image style={styles.headerImage} source={{ uri: "http://www.artwallpaperhi.com/thumbnails/detail/20140814/cityscapes%20buildings%20hong%20kong_www.artwallpaperhi.com_18.jpg" }}>
<View style={styles.back}>
<TouchableOpacity>
<Icons name="arrow-back" size={25} color="#ffffff" />
</TouchableOpacity>
</View>
<Image style={styles.subHeaderImage} borderRadius={55} source={{ uri: "https://upload.wikimedia.org/wikipedia/commons/thumb/1/14/Albert_Einstein_1947.jpg/220px-Albert_Einstein_1947.jpg" }} />
</Image>
const styles = StyleSheet.create({
container: {
flex: 1,
backgroundColor: "white"
},
headerImage: {
height: height(150),
width: deviceWidth
},
subHeaderImage: {
height: 110,
width: 110,
marginTop: height(35),
marginLeft: width(25),
borderColor: "white",
borderWidth: 2,
zIndex: 5
},
You can use this OverlayContainer. The trick is to use absolute with 100% size. Check below an example:
// #flow
import React from 'react'
import { View, StyleSheet } from 'react-native'
type Props = {
behind: React.Component,
front: React.Component,
under: React.Component
}
// Show something on top of other
export default class OverlayContainer extends React.Component<Props> {
render() {
const { behind, front, under } = this.props
return (
<View style={styles.container}>
<View style={styles.center}>
<View style={styles.behind}>
{behind}
</View>
{front}
</View>
{under}
</View>
)
}
}
const styles = StyleSheet.create({
container: {
flex: 1,
alignItems: 'center',
height: '100%',
justifyContent: 'center',
},
center: {
width: '100%',
height: '100%',
alignItems: 'center',
justifyContent: 'center',
},
behind: {
alignItems: 'center',
justifyContent: 'center',
position: 'absolute',
left: 0,
top: 0,
width: '100%',
height: '100%'
}
})
import React, {Component} from 'react';
import {StyleSheet, View} from 'react-native';
export default class App extends Component {
render() {
return (
<View>// you need to wrap the two Views an another View
<View style={styles.box1}></View>
<View style={styles.box2}></View>
</View>
);
}
}
const styles = StyleSheet.create({
box1:{
height:100,
width:100,
backgroundColor:'red'
},
box2:{
height:100,
width:100,
backgroundColor:'green',
position: 'absolute',
top:10,
left:30
},
});
You can use react-native-view-overflow plugin for placing a view on top of another. It works like the CSS z-index property.
import ViewOverflow from 'react-native-view-overflow';
<ViewOverflow />
<View style={[styles2.cardBox, { marginTop: 50 }]}>
<View style={[styles2.cardItem]} >
<Text style={styles2.cardHeader}>userList</Text>
</View>
<View style={[styles2.cardContent]}>
<Text style={styles2.text}>overflow: "visible"</Text>
</View>
<View style={[styles2.cardItemFooter]} >
<Text style={styles2.cardTextFooter}>...</Text>
</View>
</View>
</ViewOverflow>
const styles2 = StyleSheet.create({
cardBox: {
borderLeftWidth: 0,
borderTopWidth: 0,
backgroundColor: "transparent",
borderWidth: 1,
borderColor: "#d0d0d0",
width: '94%',
alignSelf: 'center',
height: 200,
position: "relative",
borderRadius: 15,
overflow: "visible" // doesn't do anything
},
cardContent: {
textAlign: "right",
backgroundColor: "transparent",
marginTop: 15,
alignSelf: 'flex-end',
padding: 5,
},
cardHeader: {
color: '#fff',
fontFamily: 'Vazir',
fontSize: 12
},
cardItem: {
backgroundColor: "#3c4252",
borderRadius: 3,
position: "absolute",
top: -10,
right: -5,
width: 50,
height: 20,
paddingRight: 5,
},
})
The easiest way to achieve this is with a negative margin.
const deviceWidth = RN.Dimensions.get('window').width
a: {
alignItems: 'center',
backgroundColor: 'blue',
width: deviceWidth,
},
b: {
marginTop: -16,
marginStart: 20,
},
You can use elevation property for Android if you don't mind the shadow.
{
elevation:1
}
Try this:
style = {{position: 'absolute', bottom: 20, left: 20, elevation: 100}}
Based on the example above i've created a component which stacks all childeren on top of each other. You could even nest OverlayContainers inside OverlayContainers.
Usage:
<OverlayContainer>
<View style={{backgroundColor:'red', width:150, height: 150}}></View>
<View style={{backgroundColor:'yellow', width:50, height: 50}}></View>
<Text>Just some text</Text>
</OverlayContainer>
Output:
import React, { FC, PropsWithChildren } from 'react'
import { StyleSheet, View } from 'react-native'
export const OverlayContainer: FC<PropsWithChildren<unknown>> = (props) => {
return (
<View style={styles.container}>
{props.children.map((child, index) => (
<View style={styles.child} key={index}>
{child}
</View>
))}
</View>
);
}
const styles = StyleSheet.create({
container: {
flex: 1,
height: '100%',
},
child: {
position: 'absolute',
left: 0,
top: 0,
width: '100%',
height: '100%'
}
})
<SafeAreaView style={{ flex: 1 }} >
<View style={{ height: Dimensions.get('window').height / 2, backgroundColor: 'blue', justifyContent: 'center' }}>
<Text style={{ fontSize: 25, alignSelf: 'center' }} >A</Text>
<View style={{ justifyContent: 'center', height: 100, width: 100, backgroundColor: 'yellow', position: 'absolute', left: 20, top: Dimensions.get('window').height / 2 - 70 }}>
<Text style={{ fontSize: 22, alignSelf: 'center' }} >B</Text>
</View>
</View>
</SafeAreaView>