My app suddenly started crashing and gave me that error:
Exception thrown while executing UI block: -[__NSCFNumber firstObject]: unrecognized selector
sent to instance 0xb553069cd18775de`
After sometime I was able isolate the part that generates the error and found out that it has to do with the Svg component imported from react-native-svg.
I tried removing and reinstalling node_modules and I tried reseting the cache, and I even tried creating a new expo app from scratch that does nothing but render an Svg component, but the problem still persists.
And on android I get a different error message:
Error while updating property 'fill' of a View managed by: RNSVGGroup
null
java.Lang.Double cannot be cast to
java.Lang.String
Here's what my code looks like:
import React from 'react';
import { View, StyleSheet } from 'react-native';
import { Svg } from 'react-native-svg';
const App = () => (
<View style={styles.container}>
<Svg width={100} height={100}>
</Svg>
</View>
);
const styles = StyleSheet.create({
container:{
flex: 1,
justifyContent: 'center',
alignItems: 'center',
}
});
export default App;
Based on Javlon's comment the solution is to remove the package using npm uninstall react-native-svg or yarn remove react-native-svg And then installing it again with expo install react-native-svg
I was having same issue when using react-native-heroicons version 3.2.0.
https://github.com/ecklf/react-native-heroicons
I downgraded react-native-svg which also gets installed with react-native-heroicons from 13.0.0 to 12.3.0 which then started to work.
To uninstall and install 12.3.0 version of react-native-svg follow below:
npm uninstall react-native-svg
npm install react-native-svg#12.3.0
Related
This is my second go around installing tailwind rn for a project and I simply can't get it to work.
I ran npm install tailwind-rn followed by npx setup-tailwind-rn and I'm running it in development mode after changing the tailwind.config.js to scan the only app file:
content: ["./App.js"],
The App.js file in the meantime looks like this:
import React from 'react';
import { StatusBar } from 'expo-status-bar';
import { StyleSheet, Text, View } from 'react-native';
import {TailwindProvider} from 'tailwind-rn';
import utilities from './tailwind.json';
import { useTailwind } from 'tailwind-rn';
export default function App() {
const tw = useTailwind();
return (
<TailwindProvider utilities={utilities}>
<View>
<Text style={tw('text-blue-600')}>Hello world</Text>
<StatusBar style="auto" />
</View>
</TailwindProvider>
);
}
My tailwind.css and tailwind.json are both populated with defitions for .text-blue-600 and I receive no errors when running, but none of the styles I apply work. Very confused.
I would recommend using tailwind-react-native-classnames from jaredh159. No setup or extra configurations needed after installation. It works out of the box.
This package gives the flexibility of mixing styles.
Install using yarn add twrnc or npm install twrnc.
Get more info from the GitHub page
Does anyone knows how to fix this error. I have tried to install
npm install react-native-gesture-handler
and import it but still this error occurred. Thank you
Edit:
Some dependencies are incompatible with the installed expo package version:
react-native-gesture-handler - expected version: ~2.1.0 - actual version installed: 2.3.2
Your project may not work correctly until you install the correct versions of the packages.
To install the correct versions of these packages, please run: expo doctor --fix-dependencies,
or install individual packages by running expo install [package-name ...]
My terminal show this too.
Please wrap your NavigationContainer with GestureHandlerRootView.
in App.js:
import { GestureHandlerRootView } from "react-native-gesture-handler";
import { NavigationContainer } from "#react-navigation/native";
export default function App() {
return (
<GestureHandlerRootView style={{ flex: 1 }}>
<NavigationContainer>
...
</NavigationContainer
</GestureHandlerRootView>
);
}
I am getting this error after running my App:
error: bundling failed: Error: Unable to resolve module react-native-safe-area-context from node_modules/react-navigation-stack/lib/module/vendor/views/Stack/StackView.js: react-native-safe-area-context could not be found within the project.
But the same thing I had done for my old demo. It worked perfectly fine.
I don't know what I am doing wrong here. Please check my code:
For installing:
React Native Navigation & Gesture Handler:
npm install --save react-navigation
npm install --save react-native-gesture-handler
React Native Stack:
npm install --save react-navigation-stack
App.js
import { createAppContainer } from "react-navigation";
import { createStackNavigator } from "react-navigation-stack";
import FirstOptionsPage from "./FirstOptionsPage";
const MainNavigator = createStackNavigator(
{
FirstOptions: FirstOptionsPage
},
{
defaultNavigationOptions: {
headerStyle: {
// backgroundColor: '#28F1A6',
elevation: 0,
shadowOpacity: 0
},
headerTintColor: "#ca375e",
headerTitleStyle: {
fontWeight: "bold",
color: "#161616"
}
}
}
);
const App = createAppContainer(MainNavigator); // For setting Navigation Stack
export default App;
And FirstOptionsPage.js:
import React from "react";
import {
SafeAreaView,
StyleSheet,
View,
Text,
ScrollView,
Switch
} from "react-native";
export default class FirstOptionsPage extends React.Component {
static navigationOptions = {
title: "Preferences"
};
constructor(props) {
super(props);
this.state = {
switch1Value: false
};
}
toggleSwitch1 = value => {
this.setState({ switch1Value: value });
console.log("Switch 1 is: " + value);
};
render() {
const { navigate } = this.props.navigation;
return (
<SafeAreaView style={styles.mainContainerStyle}>
<View style={styles.subContainerStyle}>
<Text style={styles.subtitleTextStyle}>Someone likes my post</Text>
<View style={styles.switchStyle}>
<Switch
onValueChange={this.toggleSwitch1}
value={this.state.switch1Value}
thumbColor={MAGENTA_COLOR_CODE}
trackColor={{
false: GREY_COLOR_CODE,
true: DARK_GREY_COLOR_CODE
}}
/>
</View>
</View>
</SafeAreaView>
);
}
}
I am new to React-Native. How can I fix this?
I think the problem is in the SafeAreaView, for the new react-native version, it has migrated to react-native-community/react-native-safe-area-view. if you want to use SafeAreaView, you should install it first.
the new use is like this:
import SafeAreaView from 'react-native-safe-area-view';
export default function MyAwesomeApp() {
return (
<SafeAreaView style={{ flex: 1 }}>
<View style={{ flex: 1 }}>
<Text>
Look, I'm safe! Not under a status bar or notch or home indicator or
anything! Very cool
</Text>
</View>
</SafeAreaView>
);
}
for installing it you can use the following commands:
yarn add react-native-safe-area-view react-native-safe-area-context.
if you do not use auto-link, you have to also link it. for details about it, see this link
It is a little funny, I wanted to add navigation so I added
npm install --save react-navigation
for this to work fine I had to add:
expo install react-native-gesture-handler react-native-reanimated
Then I got
Unable to resolve "react-native-safe-area-context"
So I added:
expo install react-navigation-stack
expo install react-native-safe-area-view react-native-safe-area-context
then I got
bundling failed: Error: Unable to resolve module #react-native-community/masked-view`
So I searched for the masked-view (which currently is not supported by the expo, according to its git document). Then I found out that I can use:
expo install #react-native-community/masked-view,
which could work or not :)
Therefore, from now on I use following commands at the start of all of my react-native projects, to be able to use navigation properly:
npm install --save react-navigation
expo install react-native-gesture-handler react-native-reanimated react-navigation-stack
expo install react-native-safe-area-view react-native-safe-area-context
expo install #react-native-community/masked-view.
After running these commands:
npm i react-native-safe-area-view react-native-safe-area-context &&
react-native link react-native-safe-area-context
It prompted me an error about masked-view, so I also had to run npm i #react-native-community/masked-view and then my code can now be successfully run on Android physical device.
Thanks to Lenoarod and Gautam Shrivastav for pointing out the right direction.
installing following two,
npm install --save #react-native-community/masked-view
npm install react-native-safe-area-context
it is work for me
I think you miss link depency with your project so you can try as below:
With React Native 0.6 or higher:
On iOS, make sure you have Cocoapods installed and run:
cd ios
pod install
cd ..
With React native 0.59 and lower try:
react-native link react-native-safe-area-context
copy all and paste in terminal
expo install react-navigation react-native-gesture-handler react-native-reanimated react-native-screens
work for me
Run the following:
expo install react-native-safe-area-context
expo will select the right version and then install it.
To use React Navigation you need to run the following command
npm install react-native-reanimated react-native-gesture-handler react-native-screens react-native-safe-area-context #react-native-community/masked-view
or
yarn add react-native-reanimated react-native-gesture-handler react-native-screens react-native-safe-area-context #react-native-community/masked-view
i did this
yarn add #react-native-community/masked-view
yarn add react-native-safe-area-context
and it gave me another error on import type { ScreenProps } from 'react-native-screens'
then did
yarn add react-native-screens
all went well
use the commend npm i react-navigation-stack t solve this error
Starting the Metro Bundler directly from the project directory works for me.
# Clean cache
rm -rf $TMPDIR/react-*; rm -rf $TMPDIR/haste-*; rm -rf $TMPDIR/metro-*; watchman watch-del-all
# Start Metro Bundler directly
react-native start
# Now run react-native run-android or react-native run-ios in another tab
If you are using #react-native/stack then before installing it use following command to install it's dependency
npm install react-native-reanimated react-native-gesture-handler react-native-screens react-native-safe-area-context #react-native-community/masked-view
read the documentation at https://reactnavigation.org/docs/getting-started/
Me I think it is due to incompatible version pairs for expo and safe area context.
You should try run this:
npm uninstall react-native-safe-area-context
After, you run this :
expo install react-native-safe-area-context
I wonder how I can save the value from qrcode scanner used in React Native and show the value to another page automatically. Thus, once the qrcode has been scanned, it will be redirected automatically to another page.
Is it possible to use React Navigation?
You can use react-native-qrcode-scanner the library to create this type of functionality.
react-native-camera is a dependency for this package that you'll need to add to your project. To install, run the following commands:
npm install react-native-camera --save
react-native link react-native-camera
After that install and link react-native-qrcode-scanner by the following commands:
npm install react-native-qrcode-scanner --save
react-native link react-native-qrcode-scanner
react-native link react-native-permissions
Here is a sample code for QR scanner
import React, {Component} from 'react';
import {StyleSheet, Text, View, AppRegistry, TouchableOpacity, Linking} from 'react-native';
import QRCodeScanner from 'react-native-qrcode-scanner';
export default class App extends Component {
onSuccess(e) {
//here you can do whatever you want to do on a successful scan
alert(e.data);
}
render() {
return (
<View style={{flex:1, justifyContent: 'center',}}>
<QRCodeScanner
showMarker={true}
onRead={this.onSuccess.bind(this)}
/>
</View>
);
}
}
If have face any difficulty in installation you can visit this link: https://www.npmjs.com/package/react-native-qrcode-scanner
Somebody try to use react-native-icons? I follow this steps:
npm install react-native-icons#latest --save
In XCode, in the project navigator right click Libraries ➜ Add Files to [your project's name]
Go to node_modules ➜ react-native-icons➜ ios and add ReactNativeIcons.xcodeproj
Add libReactNativeIcons.a (from 'Products' under ReactNativeIcons.xcodeproj) to your project's Build Phases ➜ Link Binary With Libraries phase
Add the font files you want to use into the Copy Bundle Resources build phase of your project (click the '+' and click 'Add Other...' then choose the font files from node_modules/react-native-icons/ios/Libraries/FontAwesomeKit).
Run your project (Cmd+R)
My Code
var React = require('react-native');
var Icon = require('FAKIconImage');
var { AppRegistry, StyleSheet, Text, View} = React;
class BringgersApp extends React.Component {
constructor(props) {
super(props);
}
render() {
return(
<View style={styles.container}>
<Text style={styles.welcome}>
Welcome to Bringgers!
</Text>
<Icon
name='ion|beer'
size={150}
color='#887700'
style={styles.beer} />
</View>
)
}
}
var styles = StyleSheet.create({
container: {
flex: 1,
justifyContent: 'center',
alignItems: 'center',
backgroundColor: '#F5FCFF',
},
welcome: {
fontSize: 20,
textAlign: 'center',
margin: 10,
},
instructions: {
textAlign: 'center',
color: '#333333',
marginBottom: 5,
},
});
React.AppRegistry.registerComponent('BringgersApp', function() { return BringgersApp });
After I build, he says the file doesn't exist...
Font file doesn't exist
I clean the DerivedData and try to build many times, but doesn't work.
Steps to install and usage Ionicons, FontAwesome and Entypo font Icons in react-native.
First you need to install using following command.
react-native install react-native-vector-icons
Then Required to Link:
react-native link react-native-vector-icons
Import font package files to your page:
import Ionicons from 'react-native-vector-icons/Ionicons';
import FontAwesome from 'react-native-vector-icons/FontAwesome';
import Entypo from 'react-native-vector-icons/Entypo';
Usage Example:
<View>
<Text>Ionicons Icons</Text>
<Icon name='md-bicycle' />
<Text>FontAwesome Icons</Text>
<FontAwesome name='trophy' />
<Text>Entypo Icons</Text>
<Entypo name='aircraft' />
</View>
If you want to see list of available icons, you can look in this directory:
Ionicons:
\node_modules\react-native-vector-icons\glyphmaps\Ionicons.json
FontAwesome:
\node_modules\react-native-vector-icons\glyphmaps\FontAwesome.json
Entypo:
\node_modules\react-native-vector-icons\glyphmaps\Entypo.json
Giving you my apps screenshot.
First things first,
the maintainer of react-native-iconshimself points to the newer & maintained react-native-vector-icons
Apparently as of now the rnpm project has been merged into react-native.
In other words, your life can be as easy as typing
react-native install react-native-vector-icons
react-native link react-native-vector-icons
And you may be good to go*)
*) at least it worked on my machine
Did you import file node_modules/react-native-icons/ios/ReactNativeIcons/Libraries/FontAwesomeKit/ionicons.ttf to your project?
Use React Native Package Manager : https://github.com/rnpm/rnpm
$ npm install rnpm -g
Running
Installing dependency:
If you want to install a dependency and link it in one run:
$ rnpm install react-native-icons
Linking dependency:
If you already have some installed (but not linked) modules, run:
$ rnpm link
Do you have "Build settings" -> "Header Search Paths" -> "$(SRCROOT)/node_modules/react-native/React" recursive?
Did you include icon fonts to "Build phases" -> "Copy Bundle Resources" in your Main project?
So in my project, I access the Icons through this code: let { Icon, } = require('react-native-icons');
Although I never had issues using FontAwesome icons, I had issues using Material Icons. You can also check out react-native-vector-icons.
For using icons in react native, there are many libraries available, react-native-vector-icons is one of them, it is very easy to use.
just follow 2 steps, first you have to install library,
then you have to link it also, to use it in your project.
Run this command for installing library
npm install react-native-vector-icons --save
Run this command for linking library
react-native link react-native-vector-icons
How to use this library
You can use any directory showed in the image, each directory has a lots of icons in it, now you have to choose which directory has a best icon for you...
For finding best directory for you, I will recommend you, simply visit this link:
Find best icon for your app
On this website simply search the name of icon you are lookig for,
You will get matching icons in all directories, you can simply remember the name of your selected icon, and use it in your app...
suppose I search arrow on this link, and I selected arrowsalt from AntDesign directory and want to use it in my App.
import Icon from 'react-native-vector-icons/AntDesign';
if you want to use FontAwesome, then simply replace AntDesign with FontAwesome, or the name of directory you want to use.
e.g import Icon from 'react-native-vector-icons/DirectoryName';
And use icon like this.
<Icon name="arrowsalt" size={30} color="blue" />
For further details Visit this link
Reference:
https://openbase.com/js/react-native-vector-icons/documentation
https://aboutreact.com/react-native-vector-icons/
https://oblador.github.io/react-native-vector-icons/
try
rnpm link // If you installed module
Also
npm install module-name
and after execute
rnpm link
restart services..
This code relink automatic your modules.
Work to me. Thanks.
you can also try with native-base library.
it provide tag
it is easy and simple to use any icon which can be use with mobile devices.
follow this link for more information on native base icon.
http://nativebase.io/docs/v2.0.0/components#icon
follow this link for more information on list of icon.
https://ionicframework.com/docs/v2/ionicons/
ex.
<Icon name='ios-list' style={style.icon} />
Step 1: Install react-native-elements
yarn add react-native-elements
# or with npm
npm i react-native-elements --save
Step 2: Install react-native-vector-icons
If you have already installed react-native-vector-icons as a dependency for your project you can skip this step. Otherwise run the following command:
# yarn
yarn add react-native-vector-icons
# or with npm
npm i --save react-native-vector-icons
# link
react-native link react-native-vector-icons
and after this just simply use them in your project like
import { Icon } from 'react-native-elements';
class IonBeer extends React.Component {
render() {
return (
<Icon
name='md-beer'
type='ionicon'
color='#887700'
size=150
/>
);
}
}
and then simply use it like.
<IonBeer/>
any where you want
For Icon you can use react-native vector icon . It comprises of various icon that we can use in your project for a native look .
for more you can have a look https://github.com/oblador/react-native-vector-icons.
For more native components you can have a look at nativebase.io .It's an awesome library for UI in react native .