Kida007 / React Native Normalized

react-native-normalized

Components that behave more consistently between iOS and Android

https://rnnormalized.netlify.com

npm i react-native-normalized

React Native's built-in components render slightly different on iOS and Android, causing you to spend extra time making the UI more consistent across devices. For example, did you know that when you create a fresh project using react-native init, the color of a <Text/> is by default #000000 on iOS and #808080 on Android?

This project provides you with slightly adjusted adaptions of built-in React Native components with the goal of being more consistent between platforms. Think of it as normalize.css for React Native.

To be clear, these are not bugs in React Native, rather RN opts to preserve the default behavior on each platform as much as possible. Nonetheless, you might prefer to use components that behave more consistently.

Usage

Simply import a normalized component from react-native-normalized instead of react-native:

import React from 'react'
-import {View, Text} from 'react-native'
+import {View} from 'react-native'
+import {Text} from 'react-native-normalized'

class App extends React.Component {
    render() {
        return (
            <View>
                <Text>Welcome to React Native Normalized!</Text>
            </View>
        )
    }
}

export default App;

APIs and Components

Alert

• Alert.alert() is by default not dismissable. The RN implementation is dismissable on Android but not on iOS.

✅ Since React Native v0.60, this is fixed!

<ActivityIndicator/>

Native ActivityIndicator on Android	Native ActivityIndicator on iOS	Normalized ActivityIndicator on Android

• The default color of the activity indicator is #999999, the same color as the iOS Activity Indicator.

<Image/>

• By default, on Android, an <Image/> fades in with a 300ms delay. With the normalized component, there is no fade animation.

<Text/>

Native Text on Android	Normalized Text on Android

• The default color of the text is black #000000

  ✅ Since React Native v0.60, this is fixed!

• The default font on Android is explicitly set to Roboto. This fixes an issue which cuts off text on Oppo and OnePlus phones:

Native Text on OnePlus phone	Normalized Text on OnePlus phone

^{Screenshot shows a Text on OxygenOS which is bold and inside a <View style={{flexDirection: 'row'}}> container, triggering the bug.}

<TextInput/>

Native TextInput on Android	Native TextInput on iOS	Normalized TextInput on Android

^{Screenshot shows a TextInput with style {width: '100%', height: 100, backgroundColor: 'white'} and multiline={true}.}

• If multiline is true, the text aligns on top on Android.
• The default placeholder text color is #C7C7CD on Android, the same as the iOS default
• The default underlineColorAndroid is transparent. This is the default behavior since React Native 0.56, so it will only make a difference if you still use an older version.

Development and Ideas

Do you know of more components that could be made more consistent and that would fit well into this project? Let us know!

Currently we have two ideas for which we welcome code and comments:

• [x] Consistent dismissal behavior for Alert.alert() Implemented in v1.1.0
• [x] Consistent <Picker/>

Authors

This library is brought to you by Piyush Gupta and Jonny Burger.

License

MIT