react-native-keyboard-avoid

Component that handles keyboard appearance and automatically make any component node to keep out keyboard. Work with TextInput,View and so on.

Supported versions

• v1.0.0 requires RN>=0.20

Installation

Installation can be done through npm or yarn:

npm i react-native-keyboard-avoid --save

yarn add react-native-keyboard-avoid

Usage

You just need use this KeyboardAvoid on whatever you want to keep out from native keyboard view. It accept ScrollView, ListView, FlatList and any other View component. There will show you 3 example.

1.With something in ScrollView or ListView, FlatList

import KeyboardAvoid from 'react-native-keyboard-avoid';

_onFocus () {
	KeyboardAvoid.checkNeedScroll({
	    nodeRef: this.titleInput, 		    //TextInput ref
	    scrollNodeRef: this.scrollView,     //ScrollView ref
	    contentOffset: this.contentOffset   //ScrollView scrollOffset.y
	}, 'scroll', 0);
}

<ScrollView 
    ref={(ref) => this.scrollView = ref}
    style={{flex: 1}}
    scrollEventThrottle={3}
    onScroll={(event) => {this.contentOffset = event.nativeEvent.contentOffset.y}}>

    <View style={{justifyContent: 'space-between', flexDirection: 'row'}}>
        <TextInput
            style={BaseStyles.textInputBase}
            ref={(ref) => this.titleInput = ref}
            returnKeyType={"search"}
            onFocus={() => this._onFocus()}/>
        <Button style={[BaseStyles.iconBase, {margin: 5, color: '#333'}]}>Search</Button>
    </View>
</ScrollView>

or 

<FlatList
    ref={(ref) => this.scrollView = ref}
    onScroll={(event) => {this.contentOffset = event.nativeEvent.contentOffset.y;}}/>

2.With component which use position: 'absolute'

import KeyboardAvoid from 'react-native-keyboard-avoid';

_onPress () {
	this.aTextInput.focus();
	KeyboardAvoid.checkNeedScroll({
       nodeRef: this.footer
   }, 'position', 0);
}

<View ref={(ref) => this.footer = ref}
    style={{
        width: config.width, 
        position: 'absolute', 
        bottom: 0, 
        height: 50,
        backgroundColor: 'lightblue',
        zIndex: 4
    }}>
    <TouchableOpacity onPress={() => this._onPress()}>
    	<Text style={{color: 'white', lineHeight: 50}}>浮低</Text>
    </TouchableOpacity>
</View>

3.With two components one use position and one use scroll

import KeyboardAvoid from 'react-native-keyboard-avoid';

_onPressAndFocus () {
	KeyboardAvoid.checkNeedScroll({
        nodeRef: this.titleInput, 
        scrollNodeRef: this.scrollView, 
        contentOffset: this.contentOffset
    }, 'scroll', 50);
    KeyboardAvoid.checkNeedScroll({
        nodeRef: this.footer
    }, 'position');
}

Methods

Method	Parameter	Description
checkNeedScroll	(params, type='scroll', offset=0)	Get ScrollResponder
unMount	none	unMount this handler while app view unMount

API

KeyboardAvoid.checkNeedScroll(params, type='scroll', offset=0)

Prame

params {object}

Prop	Type	Description
nodeRef	Node Ref	ref of the component which need to avoid from keyboard
scrollNodeRef	Node Ref	ref of scroll component
contentOffset	Node Ref	scrolloffset.y of scroll component

type {string}

value	Description
scroll	Such as example 1. keyboard avoid in ScrollView or ListView, FlatList
position	Such as example 2. keyboard avoid with position

offset {number}

target offset from the top of keyboard onScroll={(event) => {this.contentOffset = event.nativeEvent.contentOffset.y}}

License MIT