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customKeyboard.js
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customKeyboard.js
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import React, { Component } from 'react';
import PropTypes from 'prop-types'
import {
Keyboard,
Platform,
NativeAppEventEmitter,
NativeModules,
TextInput,
findNodeHandle,
AppRegistry,
DeviceInfo,
AppState,
} from 'react-native';
import CustomKeyBoardView from './CustomKeyBoardView'
const { CustomKeyboard} = NativeModules;
const {
install, uninstall,
insertText, backSpace, doDelete,
moveLeft, moveRight,
switchSystemKeyboard,
clearAll,
} = CustomKeyboard;
export {
install, uninstall,
insertText, backSpace, doDelete,
moveLeft, moveRight,
switchSystemKeyboard,
clearAll,
};
const keyboardTypeRegistry = {};
export const currentHeight = DeviceInfo.isIPhoneX_deprecated ? 286 : 252
export function addKeyBoardShowListener(listener) {
if(Platform.OS === 'android') {
return NativeAppEventEmitter.addListener('showCustomKeyboard', (data) => {
listener(data)
})
} else {
Keyboard.addListener('keyboardDidShow', () => {
listener()
});
return 'keyboardDidShow'
}
}
export function addKeyBoardHideListener(listener) {
if(Platform.OS === 'android') {
return NativeAppEventEmitter.addListener('hideCustomKeyboard', (data) => {
listener(data)
})
} else {
Keyboard.addListener('keyboardDidHide', () => {
listener()
});
return 'keyboardDidHide'
}
}
export function removeKeyBoardListener(subscribtion) {
if(Platform.OS === 'android') {
NativeAppEventEmitter.removeSubscription(subscribtion)
} else {
Keyboard.removeListener(subscribtion)
}
}
export function register(type, factory) {
keyboardTypeRegistry[type] = factory;
}
export function clearFocus(tag) {
TextInput.State.blurTextInput(tag)
}
class CustomKeyboardContainer extends Component {
render() {
const {tag, type} = this.props;
const factory = keyboardTypeRegistry[type];
if (!factory) {
console.warn(`Custom keyboard type ${type} not registered.`);
return null;
}
const Comp = factory();
return <Comp tag={tag} />;
}
}
AppRegistry.registerComponent("CustomKeyboard", ()=>CustomKeyboardContainer);
export class CustomTextInput extends Component {
static propTypes = {
...TextInput.propTypes,
customKeyboardType: PropTypes.string,
};
constructor() {
super(...arguments);
this.state = {text: this.props.defaultValue || ''}
}
componentDidMount() {
this.installTime = setTimeout(()=>{
install(findNodeHandle(this.input), this.props.customKeyboardType);
if(Platform.OS === 'android') {
this.showSub = addKeyBoardShowListener(this._showKeyboard);
this.hideSub = addKeyBoardHideListener(this._hideKeyboard);
}
AppState.addEventListener('change', this._handleAppStateChange);
}, 300)
}
componentWillUnmount() {
this.showSub && removeKeyBoardListener(this.showSub);
this.hideSub && removeKeyBoardListener(this.hideSub);
this.installTime && clearTimeout(this.installTime)
AppState.removeEventListener('change', this._handleAppStateChange);
}
_handleAppStateChange = (nextAppState: string) => {
if (nextAppState === 'background') {
//检查键盘
if (TextInput.State.currentlyFocusedField() === findNodeHandle(this.input)) {
TextInput.State.blurTextInput(TextInput.State.currentlyFocusedField())
return true
}
}
}
componentWillReceiveProps(newProps) {
if (newProps.customKeyboardType !== this.props.customKeyboardType) {
install(findNodeHandle(this.input), newProps.customKeyboardType);
}
if (newProps.value !== null && newProps.value !== undefined && newProps.value !== this.state.text) {
this.setState({text: newProps.value})
}
}
onRef = ref => {
this.input = ref;
this.props.textInputRef && this.props.textInputRef(ref)
};
_showKeyboard = (data) => {
if(data.tag !== findNodeHandle(this.input)) return ;
this.props.onFocus && this.props.onFocus()
}
_hideKeyboard = (data) => {
if(data.tag !== findNodeHandle(this.input)) return ;
this.props.onBlur && this.props.onBlur()
if (this.props.onEndEditing) {
this.props.onEndEditing({nativeEvent:{text: this.state.text}});
}
}
_onChangeText = (text) => {
this.setState({text})
this.props.onChangeText && this.props.onChangeText(text)
}
render() {
const { customKeyboardType, ...others } = this.props;
return <TextInput {...others}
ref={this.onRef}
onChangeText={this._onChangeText}
value={this.state.text}
/>;
}
}
export function keyBoardAPI(keyBoardName) {
return function(KeyBoardView) {
class KeyBoard extends Component {
render() {
return (
<CustomKeyBoardView
insertText = {insertText}
clearFocus = {clearFocus}
clearAll = {clearAll}
backSpace = {backSpace}
KeyBoardView = {KeyBoardView}
{...this.props}
/>
)
}
}
register(keyBoardName, ()=>KeyBoard);
return KeyBoard
}
}