首页 >> js开发 >> jsReact Native登录之指纹登录篇的示例代码js大全
jsReact Native登录之指纹登录篇的示例代码js大全
发布时间: 2021年1月13日 | 浏览:
| 分类:js开发
React Native登录之指纹登录篇，具体内容如下所示：最近在做react-native的APP，项目登录使用了普通账号密码登录、短信登录、手势登陆、指纹登录和人脸识别登录五种方式，所以准备做一个登录方式的合集。本篇是指纹登录篇，通过手机调用指纹传感器来获取用户指纹并做校验，校验成功则自动登录。首先展示我们最后达成的成果，毕竟无图无真相，下方是真机录屏gif：分析下gif所展示的功能点：1，通过点击操作选项来弹出指纹识别界面，点击取消/上方空白处取消指纹识别2，切换到其他登录方式时，仍然可以调用"操作方式"来唤起指纹识别经过功能点分析，我们可以看出，现在需要一个指纹识别的组件，通过操作弹出项来唤起/切换指纹识别的组件。操作项组件我们可以选择antd-mobile-rn的ActionSheet组件，指纹识别组件使用react-native-fingerprint-scanner，在github上有642个star，想必是值得信任的，附上组件地址https://github.com/hieuvp/react-native-fingerprint-scanner。（多句嘴，模拟器是没有指纹识别的功能的，请使用真机调试）。ActionSheetreact-native-fingerprint-scanner接下来按照文档一通操作，下载，跑demo，不出所料有问题出现了。官方demo使用的是react16之前的class写法，并且对于唤起/隐藏指纹识别的地方写的有些模糊，所以我们需要仔细梳理并用新的函数式组件写法来重写一次。指纹识别的过程应该如下：1，判断设备是否支持指纹识别2，判断android API是否低于23，因为android 6.0之后官方才支持了指纹识别的api接口，所以如果android API<23我们需要对低版本手机做适配3，从指纹组件react-native-fingerprint-scanner引入FingerprintScanner，调用FingerprintScanner.authenticate方法来唤起指纹组件react-native-fingerprint-scannerFingerprintScannerFingerprintScanner.authenticate4，点击取消/上方空白处隐藏指纹组件5，指纹识别成功写对应的事件，如登录事件按照指纹识别的流程，我们在FingerPrint/index.tsx下写指纹组件，关键代码都写了注释：FingerPrint/index.tsx
import React, {Component, useState, useCallback} from 'react';
import {
Alert,
Image,
Text,
TouchableOpacity,
View,
ViewPropTypes,
Platform,
StyleSheet,
} from 'react-native';
import FingerprintScanner from 'react-native-fingerprint-scanner';
import ShakingText from './ShakingText.component';
import {connector, ModelState} from '@/models/connect';
import {useFocusEffect} from "@react-navigation/native";
interface Props extends ModelState{
fingerPrint,
setFingerPrint,
}
const FingerPrintPopup: React.FC = React.memo(props => {
let {fingerPrint, setFingerPrint,dispatch} = props;
const description = null;
const [LegacyInfo, setLegacyInfo] = useState({
errorMessageLegacy: undefined,
biometricLegacy: undefined
})
useFocusEffect(
React.useCallback(() => {
console.log("进入指纹组件");
//判断设备是否支持指纹识别
detectFingerprintAvailable();
//判断Android API是不是<23，高于此版本使用标准指纹解锁api;低于此版本使用兼容适配版本
if (requiresLegacyAuthentication()) {
authLegacy();
} else {
authCurrent();
}
return () => {
console.log("离开指纹组件");
//组件卸载，停止指纹监听指纹扫描器并释放内部缓存
FingerprintScanner.release();
}
}, [])
)
//判断安卓版本
function requiresLegacyAuthentication() {
return Platform.Version < 23;
}
//控制指纹组件消失
const handleFingerprintDismissed = () => {
setFingerPrint({
...fingerPrint,
popupShowed: false
});
};
//检测手机是否支持指纹识别
const detectFingerprintAvailable = () => {
FingerprintScanner
.isSensorAvailable()
.catch(error => {
Alert.alert("您的设备不支持指纹识别，请选择其他方式登录")
setFingerPrint({
...fingerPrint,
errorMessage: error.message,
biometric: error.biometric,
popupShowed: false,
})
});
}
//android API>23时，调用authCurrent
const authCurrent = () => {
FingerprintScanner
.authenticate({title: '指纹登录', cancelButton: '取消'})
.then(() => {
//离开页面时将popupShowed置为false
handleFingerprintDismissed();
//指纹验证成功后的事件，比如登录
successVerify();
})
.catch(() => {
//点击取消或上方空白区隐藏组件后，将popupShowed置为false
//这里是控制指纹组件切换显示/隐藏的关键！
handleFingerprintDismissed();
})
}
//指纹验证成功后的事件，比如登录
const successVerify = () => {
dispatch({
type: 'user/login',
payload: {
username: "张三",
password: '123456',
}
});
}
//android API<23时调用指纹组件的兼容写法
const authLegacy = () => {
FingerprintScanner
.authenticate({onAttempt: handleAuthenticationAttemptedLegacy})
.then(() => {
//指纹验证成功
handleFingerprintDismissed();
Alert.alert('指纹身份验证', '身份验证成功');
successVerify();
})
.catch((error) => {
//指纹验证失败
setLegacyInfo({errorMessageLegacy: error.message, biometricLegacy: error.biometric});
description.shake();
handleFingerprintDismissed();
});
}
//当用户尝试扫描指纹但失败时的回调函数
const handleAuthenticationAttemptedLegacy = (error) => {
setLegacyInfo({
...LegacyInfo,
errorMessageLegacy: error.message
});
description.shake();
};
//手动写一个指纹验证的组件
const renderLegacy = (
style={styles.logo}
source={require('../../../assets/login/finger_print.png')}
/>
生物识别{'\n'}身份验证
ref={(instance) => {
description = instance;
}}
style={styles.description(!!LegacyInfo.errorMessageLegacy)}>
{LegacyInfo.errorMessageLegacy || `Scan your ${LegacyInfo.biometricLegacy} on the\ndevice scanner to continue`}
style={styles.buttonContainer}
onPress={handleFingerprintDismissed}
>
返回
);
return () => {
//android API>23时，不需要渲染；否则渲染renderLegacy的组件
if (requiresLegacyAuthentication()) {
return renderLegacy
}
return null;
}
})
export default connector(FingerPrintPopup);
const styles = StyleSheet.create({
container: {
position: 'absolute',
top: 0,
bottom: 0,
left: 0,
right: 0,
backgroundColor: 'rgba(0, 164, 222, 0.9)',
flexDirection: 'column',
justifyContent: 'center',
alignItems: 'center',
},
contentContainer: {
flexDirection: 'column',
justifyContent: 'center',
alignItems: 'center',
backgroundColor: '#ffffff',
},
logo: {
marginVertical: 45,
},
heading: {
textAlign: 'center',
color: '#00a4de',
fontSize: 21,
},
description: (error) => {
return {
textAlign: 'center',
color: error ? '#ea3d13' : '#a5a5a5',
height: 65,
fontSize: 18,
marginVertical: 10,
marginHorizontal: 20,
}
},
buttonContainer: {
padding: 20,
},
buttonText: {
color: '#8fbc5a',
fontSize: 15,
fontWeight: 'bold',
},
});
import React, {Component, useState, useCallback} from 'react';
import {
Alert,
Image,
Text,
TouchableOpacity,
View,
ViewPropTypes,
Platform,
StyleSheet,
} from 'react-native';
import FingerprintScanner from 'react-native-fingerprint-scanner';
import ShakingText from './ShakingText.component';
import {connector, ModelState} from '@/models/connect';
import {useFocusEffect} from "@react-navigation/native";
interface Props extends ModelState{
fingerPrint,
setFingerPrint,
}
const FingerPrintPopup: React.FC = React.memo(props => {
let {fingerPrint, setFingerPrint,dispatch} = props;
const description = null;
const [LegacyInfo, setLegacyInfo] = useState({
errorMessageLegacy: undefined,
biometricLegacy: undefined
})
useFocusEffect(
React.useCallback(() => {
console.log("进入指纹组件");
//判断设备是否支持指纹识别
detectFingerprintAvailable();
//判断Android API是不是<23，高于此版本使用标准指纹解锁api;低于此版本使用兼容适配版本
if (requiresLegacyAuthentication()) {
authLegacy();
} else {
authCurrent();
}
return () => {
console.log("离开指纹组件");
//组件卸载，停止指纹监听指纹扫描器并释放内部缓存
FingerprintScanner.release();
}
}, [])
)
//判断安卓版本
function requiresLegacyAuthentication() {
return Platform.Version < 23;
}
//控制指纹组件消失
const handleFingerprintDismissed = () => {
setFingerPrint({
...fingerPrint,
popupShowed: false
});
};
//检测手机是否支持指纹识别
const detectFingerprintAvailable = () => {
FingerprintScanner
.isSensorAvailable()
.catch(error => {
Alert.alert("您的设备不支持指纹识别，请选择其他方式登录")
setFingerPrint({
...fingerPrint,
errorMessage: error.message,
biometric: error.biometric,
popupShowed: false,
})
});
}
//android API>23时，调用authCurrent
const authCurrent = () => {
FingerprintScanner
.authenticate({title: '指纹登录', cancelButton: '取消'})
.then(() => {
//离开页面时将popupShowed置为false
handleFingerprintDismissed();
//指纹验证成功后的事件，比如登录
successVerify();
})
.catch(() => {
//点击取消或上方空白区隐藏组件后，将popupShowed置为false
//这里是控制指纹组件切换显示/隐藏的关键！
handleFingerprintDismissed();
})
}
//指纹验证成功后的事件，比如登录
const successVerify = () => {
dispatch({
type: 'user/login',
payload: {
username: "张三",
password: '123456',
}
});
}
//android API<23时调用指纹组件的兼容写法
const authLegacy = () => {
FingerprintScanner
.authenticate({onAttempt: handleAuthenticationAttemptedLegacy})
.then(() => {
//指纹验证成功
handleFingerprintDismissed();
Alert.alert('指纹身份验证', '身份验证成功');
successVerify();
})
.catch((error) => {
//指纹验证失败
setLegacyInfo({errorMessageLegacy: error.message, biometricLegacy: error.biometric});
description.shake();
handleFingerprintDismissed();
});
}
//当用户尝试扫描指纹但失败时的回调函数
const handleAuthenticationAttemptedLegacy = (error) => {
setLegacyInfo({
...LegacyInfo,
errorMessageLegacy: error.message
});
description.shake();
};
//手动写一个指纹验证的组件
const renderLegacy = (
style={styles.logo}
source={require('../../../assets/login/finger_print.png')}
/>
生物识别{'\n'}身份验证
ref={(instance) => {
description = instance;
}}
style={styles.description(!!LegacyInfo.errorMessageLegacy)}>
{LegacyInfo.errorMessageLegacy || `Scan your ${LegacyInfo.biometricLegacy} on the\ndevice scanner to continue`}
style={styles.buttonContainer}
onPress={handleFingerprintDismissed}
>
返回
);
return () => {
//android API>23时，不需要渲染；否则渲染renderLegacy的组件
if (requiresLegacyAuthentication()) {
return renderLegacy
}
return null;
}
})
export default connector(FingerPrintPopup);
const styles = StyleSheet.create({
container: {
position: 'absolute',
top: 0,
bottom: 0,
left: 0,
right: 0,
backgroundColor: 'rgba(0, 164, 222, 0.9)',
flexDirection: 'column',
justifyContent: 'center',
alignItems: 'center',
},
contentContainer: {
flexDirection: 'column',
justifyContent: 'center',
alignItems: 'center',
backgroundColor: '#ffffff',
},
logo: {
marginVertical: 45,
},
heading: {
textAlign: 'center',
color: '#00a4de',
fontSize: 21,
},
description: (error) => {
return {
textAlign: 'center',
color: error ? '#ea3d13' : '#a5a5a5',
height: 65,
fontSize: 18,
marginVertical: 10,
marginHorizontal: 20,
}
},
buttonContainer: {
padding: 20,
},
buttonText: {
color: '#8fbc5a',
fontSize: 15,
fontWeight: 'bold',
},
});
可以看出来，android API在23以上版本是不需要渲染指纹识别组件的，23以下版本需要自己手动写一个渲染的组件，引用了一个ShakingText组件，这个组件官网有给，我们直接复制过来就可以，在ShakingText.component.js写：ShakingTextShakingText.component.js
import PropTypes from 'prop-types';
import React, { Component } from 'react';
import {
Animated,
Text,
} from 'react-native';
class ShakingText extends Component {
componentWillMount() {
this.shakedValue = new Animated.Value(0);
}
get animatedStyle() {
return {
transform: [
{
translateY: this.shakedValue.interpolate({
inputRange: [0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1],
outputRange: [0, 10, -15, 12, -9, 18, -7, 10, -11, 5, 0],
}),
},
{
translateX: this.shakedValue.interpolate({
inputRange: [0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1],
outputRange: [0, 2, -3, 4, -4, 3, -3, 4, -5, 2, 0],
}),
},
],
};
}
shake = () => {
this.shakedValue.setValue(0);
Animated.spring(this.shakedValue, {
toValue: 1,
friction: 3,
tension: 10,
}).start(() => this.shakedValue.setValue(0));
};
render() {
return (
{...this.props}
style={[this.animatedStyle, this.props.style]}
/>
);
}
}
ShakingText.propTypes = {
children: PropTypes.oneOfType([
PropTypes.arrayOf(PropTypes.node),
PropTypes.node
]),
style:Text.propTypes.style,
};
export default ShakingText;
import PropTypes from 'prop-types';
import React, { Component } from 'react';
import {
Animated,
Text,
} from 'react-native';
class ShakingText extends Component {
componentWillMount() {
this.shakedValue = new Animated.Value(0);
}
get animatedStyle() {
return {
transform: [
{
translateY: this.shakedValue.interpolate({
inputRange: [0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1],
outputRange: [0, 10, -15, 12, -9, 18, -7, 10, -11, 5, 0],
}),
},
{
translateX: this.shakedValue.interpolate({
inputRange: [0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1],
outputRange: [0, 2, -3, 4, -4, 3, -3, 4, -5, 2, 0],
}),
},
],
};
}
shake = () => {
this.shakedValue.setValue(0);
Animated.spring(this.shakedValue, {
toValue: 1,
friction: 3,
tension: 10,
}).start(() => this.shakedValue.setValue(0));
};
render() {
return (
{...this.props}
style={[this.animatedStyle, this.props.style]}
/>
);
}
}
ShakingText.propTypes = {
children: PropTypes.oneOfType([
PropTypes.arrayOf(PropTypes.node),
PropTypes.node
]),
style:Text.propTypes.style,
};
export default ShakingText;写好了指纹组件，接下来我们需要使用ActionSheet组件来切换和控制指纹组件的显示隐藏。控制指纹组件的显示隐藏我们使用popupShowed这个变量来控制，将它放在state中。我们在LoginSheet/index.tsx下写：ActionSheetpopupShowedLoginSheet/index.tsx
import React,{useState} from 'react';
import {View, Text, StyleSheet} from 'react-native';
import {px2rem} from "@/utils/px2rem";
import {ActionSheet} from "@ant-design/react-native";
import {navigateReplace} from "@/utils/navigation";
import FingerprintPopup from "@/pages/Account/FingerPrint";
import {connector,ModelState} from '@/models/connect';
interface Props {
}
const LoginSheet: React.FC = React.memo(props => {
const {dispatch} = props;
const [fingerPrint,setFingerPrint] = useState({
errorMessage: undefined,
biometric: undefined,
popupShowed: false,
})
//点击指纹登录选项时，将popupShowed置为true
const handleFingerprintShowed = () => {
setFingerPrint({
...fingerPrint,
popupShowed: true
});
}
const showActionSheet = () =>{
const BUTTONS = [
'账号 / 短信登录',
'手势登录',
'指纹登录',
'人脸识别登录',
'取消',
];
ActionSheet.showActionSheetWithOptions(
{
options: BUTTONS,
cancelButtonIndex: 4,
},
buttonIndex => {
const clickOption = BUTTONS[buttonIndex];
console.log('clicked: ',clickOption);
switch (clickOption){
case '账号 / 短信登录':
navigateReplace("Login");
return;
case '手势登录':
navigateReplace("GestureUnlock");
return;
case '指纹登录':
//显示指纹登录
handleFingerprintShowed();
return;
case '人脸识别登录':
navigateReplace("Login");
return;
}
}
);
}
return (
登录方式
{fingerPrint.popupShowed ? (
fingerPrint={fingerPrint}
setFingerPrint={setFingerPrint}
/>
) : null}
);
})
export default connector(LoginSheet);
const styles = StyleSheet.create({
container:{
},
more:{
width:'100%',
alignItems:'center',
height:px2rem(50),
marginBottom:px2rem(30),
},
moreText:{
// color:'#a1a1a1'
}
});
import React,{useState} from 'react';
import {View, Text, StyleSheet} from 'react-native';
import {px2rem} from "@/utils/px2rem";
import {ActionSheet} from "@ant-design/react-native";
import {navigateReplace} from "@/utils/navigation";
import FingerprintPopup from "@/pages/Account/FingerPrint";
import {connector,ModelState} from '@/models/connect';
interface Props {
}
const LoginSheet: React.FC = React.memo(props => {
const {dispatch} = props;
const [fingerPrint,setFingerPrint] = useState({
errorMessage: undefined,
biometric: undefined,
popupShowed: false,
})
//点击指纹登录选项时，将popupShowed置为true
const handleFingerprintShowed = () => {
setFingerPrint({
...fingerPrint,
popupShowed: true
});
}
const showActionSheet = () =>{
const BUTTONS = [
'账号 / 短信登录',
'手势登录',
'指纹登录',
'人脸识别登录',
'取消',
];
ActionSheet.showActionSheetWithOptions(
{
options: BUTTONS,
cancelButtonIndex: 4,
},
buttonIndex => {
const clickOption = BUTTONS[buttonIndex];
console.log('clicked: ',clickOption);
switch (clickOption){
case '账号 / 短信登录':
navigateReplace("Login");
return;
case '手势登录':
navigateReplace("GestureUnlock");
return;
case '指纹登录':
//显示指纹登录
handleFingerprintShowed();
return;
case '人脸识别登录':
navigateReplace("Login");
return;
}
}
);
}
return (
登录方式
{fingerPrint.popupShowed ? (
fingerPrint={fingerPrint}
setFingerPrint={setFingerPrint}
/>
) : null}
);
})
export default connector(LoginSheet);
const styles = StyleSheet.create({
container:{
},
more:{
width:'100%',
alignItems:'center',
height:px2rem(50),
marginBottom:px2rem(30),
},
moreText:{
// color:'#a1a1a1'
}
});这样就完成了react-native 的指纹登录功能，总结一下，关键点在于：切换指纹组件显示隐藏在于控制popupShowed的true/false状态来切换FingerprintPopup组件的展示与否每次唤醒组件都要通过显示FingerprintPopup组件，在初始化期间进行判断可用、版本然后调用组件展示每次隐藏组件都要通过隐藏FingerprintPopup组件，在组件卸载阶段释放指纹组件监听器FingerprintScanner.release();操作指纹组件时不管是指纹识别成功还是点击取消，都一定要将popupShowed置为false;指纹识别失败不做操作。popupShowedFingerprintPopupFingerprintPopupFingerprintPopupFingerprintScanner.release();popupShowed总结总结总结
import React, {Component, useState, useCallback} from 'react';
import {
Alert,
Image,
Text,
TouchableOpacity,
View,
ViewPropTypes,
Platform,
StyleSheet,
} from 'react-native';
import FingerprintScanner from 'react-native-fingerprint-scanner';
import ShakingText from './ShakingText.component';
import {connector, ModelState} from '@/models/connect';
import {useFocusEffect} from "@react-navigation/native";
interface Props extends ModelState{
fingerPrint,
setFingerPrint,
}
const FingerPrintPopup: React.FC
let {fingerPrint, setFingerPrint,dispatch} = props;
const description = null;
const [LegacyInfo, setLegacyInfo] = useState({
errorMessageLegacy: undefined,
biometricLegacy: undefined
})
useFocusEffect(
React.useCallback(() => {
console.log("进入指纹组件");
//判断设备是否支持指纹识别
detectFingerprintAvailable();
//判断Android API是不是<23，高于此版本使用标准指纹解锁api;低于此版本使用兼容适配版本
if (requiresLegacyAuthentication()) {
authLegacy();
} else {
authCurrent();
}
return () => {
console.log("离开指纹组件");
//组件卸载，停止指纹监听指纹扫描器并释放内部缓存
FingerprintScanner.release();
}
}, [])
)
//判断安卓版本
function requiresLegacyAuthentication() {
return Platform.Version < 23;
}
//控制指纹组件消失
const handleFingerprintDismissed = () => {
setFingerPrint({
...fingerPrint,
popupShowed: false
});
};
//检测手机是否支持指纹识别
const detectFingerprintAvailable = () => {
FingerprintScanner
.isSensorAvailable()
.catch(error => {
Alert.alert("您的设备不支持指纹识别，请选择其他方式登录")
setFingerPrint({
...fingerPrint,
errorMessage: error.message,
biometric: error.biometric,
popupShowed: false,
})
});
}
//android API>23时，调用authCurrent
const authCurrent = () => {
FingerprintScanner
.authenticate({title: '指纹登录', cancelButton: '取消'})
.then(() => {
//离开页面时将popupShowed置为false
handleFingerprintDismissed();
//指纹验证成功后的事件，比如登录
successVerify();
})
.catch(() => {
//点击取消或上方空白区隐藏组件后，将popupShowed置为false
//这里是控制指纹组件切换显示/隐藏的关键！
handleFingerprintDismissed();
})
}
//指纹验证成功后的事件，比如登录
const successVerify = () => {
dispatch({
type: 'user/login',
payload: {
username: "张三",
password: '123456',
}
});
}
//android API<23时调用指纹组件的兼容写法
const authLegacy = () => {
FingerprintScanner
.authenticate({onAttempt: handleAuthenticationAttemptedLegacy})
.then(() => {
//指纹验证成功
handleFingerprintDismissed();
Alert.alert('指纹身份验证', '身份验证成功');
successVerify();
})
.catch((error) => {
//指纹验证失败
setLegacyInfo({errorMessageLegacy: error.message, biometricLegacy: error.biometric});
description.shake();
handleFingerprintDismissed();
});
}
//当用户尝试扫描指纹但失败时的回调函数
const handleAuthenticationAttemptedLegacy = (error) => {
setLegacyInfo({
...LegacyInfo,
errorMessageLegacy: error.message
});
description.shake();
};
//手动写一个指纹验证的组件
const renderLegacy = (
style={styles.logo}
source={require('../../../assets/login/finger_print.png')}
/>
生物识别{'\n'}身份验证
ref={(instance) => {
description = instance;
}}
style={styles.description(!!LegacyInfo.errorMessageLegacy)}>
{LegacyInfo.errorMessageLegacy || `Scan your ${LegacyInfo.biometricLegacy} on the\ndevice scanner to continue`}
style={styles.buttonContainer}
onPress={handleFingerprintDismissed}
>
返回
);
return () => {
//android API>23时，不需要渲染；否则渲染renderLegacy的组件
if (requiresLegacyAuthentication()) {
return renderLegacy
}
return null;
}
})
export default connector(FingerPrintPopup);
const styles = StyleSheet.create({
container: {
position: 'absolute',
top: 0,
bottom: 0,
left: 0,
right: 0,
backgroundColor: 'rgba(0, 164, 222, 0.9)',
flexDirection: 'column',
justifyContent: 'center',
alignItems: 'center',
},
contentContainer: {
flexDirection: 'column',
justifyContent: 'center',
alignItems: 'center',
backgroundColor: '#ffffff',
},
logo: {
marginVertical: 45,
},
heading: {
textAlign: 'center',
color: '#00a4de',
fontSize: 21,
},
description: (error) => {
return {
textAlign: 'center',
color: error ? '#ea3d13' : '#a5a5a5',
height: 65,
fontSize: 18,
marginVertical: 10,
marginHorizontal: 20,
}
},
buttonContainer: {
padding: 20,
},
buttonText: {
color: '#8fbc5a',
fontSize: 15,
fontWeight: 'bold',
},
});
import React, {Component, useState, useCallback} from 'react';
import {
Alert,
Image,
Text,
TouchableOpacity,
View,
ViewPropTypes,
Platform,
StyleSheet,
} from 'react-native';
import FingerprintScanner from 'react-native-fingerprint-scanner';
import ShakingText from './ShakingText.component';
import {connector, ModelState} from '@/models/connect';
import {useFocusEffect} from "@react-navigation/native";
interface Props extends ModelState{
fingerPrint,
setFingerPrint,
}
const FingerPrintPopup: React.FC
let {fingerPrint, setFingerPrint,dispatch} = props;
const description = null;
const [LegacyInfo, setLegacyInfo] = useState({
errorMessageLegacy: undefined,
biometricLegacy: undefined
})
useFocusEffect(
React.useCallback(() => {
console.log("进入指纹组件");
//判断设备是否支持指纹识别
detectFingerprintAvailable();
//判断Android API是不是<23，高于此版本使用标准指纹解锁api;低于此版本使用兼容适配版本
if (requiresLegacyAuthentication()) {
authLegacy();
} else {
authCurrent();
}
return () => {
console.log("离开指纹组件");
//组件卸载，停止指纹监听指纹扫描器并释放内部缓存
FingerprintScanner.release();
}
}, [])
)
//判断安卓版本
function requiresLegacyAuthentication() {
return Platform.Version < 23;
}
//控制指纹组件消失
const handleFingerprintDismissed = () => {
setFingerPrint({
...fingerPrint,
popupShowed: false
});
};
//检测手机是否支持指纹识别
const detectFingerprintAvailable = () => {
FingerprintScanner
.isSensorAvailable()
.catch(error => {
Alert.alert("您的设备不支持指纹识别，请选择其他方式登录")
setFingerPrint({
...fingerPrint,
errorMessage: error.message,
biometric: error.biometric,
popupShowed: false,
})
});
}
//android API>23时，调用authCurrent
const authCurrent = () => {
FingerprintScanner
.authenticate({title: '指纹登录', cancelButton: '取消'})
.then(() => {
//离开页面时将popupShowed置为false
handleFingerprintDismissed();
//指纹验证成功后的事件，比如登录
successVerify();
})
.catch(() => {
//点击取消或上方空白区隐藏组件后，将popupShowed置为false
//这里是控制指纹组件切换显示/隐藏的关键！
handleFingerprintDismissed();
})
}
//指纹验证成功后的事件，比如登录
const successVerify = () => {
dispatch({
type: 'user/login',
payload: {
username: "张三",
password: '123456',
}
});
}
//android API<23时调用指纹组件的兼容写法
const authLegacy = () => {
FingerprintScanner
.authenticate({onAttempt: handleAuthenticationAttemptedLegacy})
.then(() => {
//指纹验证成功
handleFingerprintDismissed();
Alert.alert('指纹身份验证', '身份验证成功');
successVerify();
})
.catch((error) => {
//指纹验证失败
setLegacyInfo({errorMessageLegacy: error.message, biometricLegacy: error.biometric});
description.shake();
handleFingerprintDismissed();
});
}
//当用户尝试扫描指纹但失败时的回调函数
const handleAuthenticationAttemptedLegacy = (error) => {
setLegacyInfo({
...LegacyInfo,
errorMessageLegacy: error.message
});
description.shake();
};
//手动写一个指纹验证的组件
const renderLegacy = (
style={styles.logo}
source={require('../../../assets/login/finger_print.png')}
/>
生物识别{'\n'}身份验证
ref={(instance) => {
description = instance;
}}
style={styles.description(!!LegacyInfo.errorMessageLegacy)}>
{LegacyInfo.errorMessageLegacy || `Scan your ${LegacyInfo.biometricLegacy} on the\ndevice scanner to continue`}
style={styles.buttonContainer}
onPress={handleFingerprintDismissed}
>
返回
);
return () => {
//android API>23时，不需要渲染；否则渲染renderLegacy的组件
if (requiresLegacyAuthentication()) {
return renderLegacy
}
return null;
}
})
export default connector(FingerPrintPopup);
const styles = StyleSheet.create({
container: {
position: 'absolute',
top: 0,
bottom: 0,
left: 0,
right: 0,
backgroundColor: 'rgba(0, 164, 222, 0.9)',
flexDirection: 'column',
justifyContent: 'center',
alignItems: 'center',
},
contentContainer: {
flexDirection: 'column',
justifyContent: 'center',
alignItems: 'center',
backgroundColor: '#ffffff',
},
logo: {
marginVertical: 45,
},
heading: {
textAlign: 'center',
color: '#00a4de',
fontSize: 21,
},
description: (error) => {
return {
textAlign: 'center',
color: error ? '#ea3d13' : '#a5a5a5',
height: 65,
fontSize: 18,
marginVertical: 10,
marginHorizontal: 20,
}
},
buttonContainer: {
padding: 20,
},
buttonText: {
color: '#8fbc5a',
fontSize: 15,
fontWeight: 'bold',
},
});
可以看出来，android API在23以上版本是不需要渲染指纹识别组件的，23以下版本需要自己手动写一个渲染的组件，引用了一个ShakingText组件，这个组件官网有给，我们直接复制过来就可以，在ShakingText.component.js写：ShakingTextShakingText.component.js
import PropTypes from 'prop-types';
import React, { Component } from 'react';
import {
Animated,
Text,
} from 'react-native';
class ShakingText extends Component {
componentWillMount() {
this.shakedValue = new Animated.Value(0);
}
get animatedStyle() {
return {
transform: [
{
translateY: this.shakedValue.interpolate({
inputRange: [0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1],
outputRange: [0, 10, -15, 12, -9, 18, -7, 10, -11, 5, 0],
}),
},
{
translateX: this.shakedValue.interpolate({
inputRange: [0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1],
outputRange: [0, 2, -3, 4, -4, 3, -3, 4, -5, 2, 0],
}),
},
],
};
}
shake = () => {
this.shakedValue.setValue(0);
Animated.spring(this.shakedValue, {
toValue: 1,
friction: 3,
tension: 10,
}).start(() => this.shakedValue.setValue(0));
};
render() {
return (
{...this.props}
style={[this.animatedStyle, this.props.style]}
/>
);
}
}
ShakingText.propTypes = {
children: PropTypes.oneOfType([
PropTypes.arrayOf(PropTypes.node),
PropTypes.node
]),
style:Text.propTypes.style,
};
export default ShakingText;
import PropTypes from 'prop-types';
import React, { Component } from 'react';
import {
Animated,
Text,
} from 'react-native';
class ShakingText extends Component {
componentWillMount() {
this.shakedValue = new Animated.Value(0);
}
get animatedStyle() {
return {
transform: [
{
translateY: this.shakedValue.interpolate({
inputRange: [0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1],
outputRange: [0, 10, -15, 12, -9, 18, -7, 10, -11, 5, 0],
}),
},
{
translateX: this.shakedValue.interpolate({
inputRange: [0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1],
outputRange: [0, 2, -3, 4, -4, 3, -3, 4, -5, 2, 0],
}),
},
],
};
}
shake = () => {
this.shakedValue.setValue(0);
Animated.spring(this.shakedValue, {
toValue: 1,
friction: 3,
tension: 10,
}).start(() => this.shakedValue.setValue(0));
};
render() {
return (
{...this.props}
style={[this.animatedStyle, this.props.style]}
/>
);
}
}
ShakingText.propTypes = {
children: PropTypes.oneOfType([
PropTypes.arrayOf(PropTypes.node),
PropTypes.node
]),
style:Text.propTypes.style,
};
export default ShakingText;写好了指纹组件，接下来我们需要使用ActionSheet组件来切换和控制指纹组件的显示隐藏。控制指纹组件的显示隐藏我们使用popupShowed这个变量来控制，将它放在state中。我们在LoginSheet/index.tsx下写：ActionSheetpopupShowedLoginSheet/index.tsx
import React,{useState} from 'react';
import {View, Text, StyleSheet} from 'react-native';
import {px2rem} from "@/utils/px2rem";
import {ActionSheet} from "@ant-design/react-native";
import {navigateReplace} from "@/utils/navigation";
import FingerprintPopup from "@/pages/Account/FingerPrint";
import {connector,ModelState} from '@/models/connect';
interface Props {
}
const LoginSheet: React.FC
const {dispatch} = props;
const [fingerPrint,setFingerPrint] = useState({
errorMessage: undefined,
biometric: undefined,
popupShowed: false,
})
//点击指纹登录选项时，将popupShowed置为true
const handleFingerprintShowed = () => {
setFingerPrint({
...fingerPrint,
popupShowed: true
});
}
const showActionSheet = () =>{
const BUTTONS = [
'账号 / 短信登录',
'手势登录',
'指纹登录',
'人脸识别登录',
'取消',
];
ActionSheet.showActionSheetWithOptions(
{
options: BUTTONS,
cancelButtonIndex: 4,
},
buttonIndex => {
const clickOption = BUTTONS[buttonIndex];
console.log('clicked: ',clickOption);
switch (clickOption){
case '账号 / 短信登录':
navigateReplace("Login");
return;
case '手势登录':
navigateReplace("GestureUnlock");
return;
case '指纹登录':
//显示指纹登录
handleFingerprintShowed();
return;
case '人脸识别登录':
navigateReplace("Login");
return;
}
}
);
}
return (
{fingerPrint.popupShowed ? (
fingerPrint={fingerPrint}
setFingerPrint={setFingerPrint}
/>
) : null}
);
})
export default connector(LoginSheet);
const styles = StyleSheet.create({
container:{
},
more:{
width:'100%',
alignItems:'center',
height:px2rem(50),
marginBottom:px2rem(30),
},
moreText:{
// color:'#a1a1a1'
}
});
import React,{useState} from 'react';
import {View, Text, StyleSheet} from 'react-native';
import {px2rem} from "@/utils/px2rem";
import {ActionSheet} from "@ant-design/react-native";
import {navigateReplace} from "@/utils/navigation";
import FingerprintPopup from "@/pages/Account/FingerPrint";
import {connector,ModelState} from '@/models/connect';
interface Props {
}
const LoginSheet: React.FC
const {dispatch} = props;
const [fingerPrint,setFingerPrint] = useState({
errorMessage: undefined,
biometric: undefined,
popupShowed: false,
})
//点击指纹登录选项时，将popupShowed置为true
const handleFingerprintShowed = () => {
setFingerPrint({
...fingerPrint,
popupShowed: true
});
}
const showActionSheet = () =>{
const BUTTONS = [
'账号 / 短信登录',
'手势登录',
'指纹登录',
'人脸识别登录',
'取消',
];
ActionSheet.showActionSheetWithOptions(
{
options: BUTTONS,
cancelButtonIndex: 4,
},
buttonIndex => {
const clickOption = BUTTONS[buttonIndex];
console.log('clicked: ',clickOption);
switch (clickOption){
case '账号 / 短信登录':
navigateReplace("Login");
return;
case '手势登录':
navigateReplace("GestureUnlock");
return;
case '指纹登录':
//显示指纹登录
handleFingerprintShowed();
return;
case '人脸识别登录':
navigateReplace("Login");
return;
}
}
);
}
return (
{fingerPrint.popupShowed ? (
fingerPrint={fingerPrint}
setFingerPrint={setFingerPrint}
/>
) : null}
);
})
export default connector(LoginSheet);
const styles = StyleSheet.create({
container:{
},
more:{
width:'100%',
alignItems:'center',
height:px2rem(50),
marginBottom:px2rem(30),
},
moreText:{
// color:'#a1a1a1'
}
});这样就完成了react-native 的指纹登录功能，总结一下，关键点在于：切换指纹组件显示隐藏在于控制popupShowed的true/false状态来切换FingerprintPopup组件的展示与否每次唤醒组件都要通过显示FingerprintPopup组件，在初始化期间进行判断可用、版本然后调用组件展示每次隐藏组件都要通过隐藏FingerprintPopup组件，在组件卸载阶段释放指纹组件监听器FingerprintScanner.release();操作指纹组件时不管是指纹识别成功还是点击取消，都一定要将popupShowed置为false;指纹识别失败不做操作。popupShowedFingerprintPopupFingerprintPopupFingerprintPopupFingerprintScanner.release();popupShowed总结总结总结
刚刚发布热门点击发布时间
- [07/09]Chrome抓取页面内容代码|chrome插件获取页面数据
- [07/09]谷歌浏览器数据采集插件开发|谷歌浏览器的采集功能
- [07/09]Chrome插件轻松抓取网络数据,Chrome插件轻松抓取网页源码数据
- [07/09]chrome插件怎么安装?chrome插件开发如何安装chrome插件
- [07/09]快速chrome插件开发-北京chrome插件开发外包
- [12/31]清大光德落地护眼灯|清大光德儿童护眼灯
- [07/20]网站无障碍适老化外包改造私有化过程遇到问题整理
- [07/19]适老化改造工信部明确APP适老化规范：禁广告弹窗，网站需提供特大字体
- [07/19]适老化改造包括哪些方面?
- [07/19]什么是适老化改造？
- [07/19]适老化与信息无障碍是什么关系，二者有何异同？
- [07/19]网站如何进行适老化改造？
- [07/12]老年群体面临“数字鸿沟” 数字化网站适老化改造服务彰显人文关怀
- [07/12]数字适老化改造方案 老龄群体数字化改造受关注
- [07/11]什么是重绘?什么是回流?常见引起回流属性和方法：
