<\/span><\/h2>\r\n\r\n\r\n\r\nWe need to develop a state to keep the email value and a handle change method to handle text changes and update the email state when we add TextInputs for things like email addresses.<\/p>\r\n\r\n\r\n\r\n
This might be daunting, especially when working with a large number of inputs.<\/p>\r\n\r\n\r\n\r\n
This is where Formik comes in to help with all of the monotonous labor. So, let’s see how we can accomplish this with Formik by including an input form.<\/p>\r\n\r\n\r\n\r\n
import React from 'react';\r\nimport {\r\n SafeAreaView,\r\n StyleSheet,\r\n View,\r\n Text,\r\n TextInput,\r\n Button,\r\n} from 'react-native';\r\nimport { Formik } from 'formik';\r\nimport * as yup from 'yup';\r\n\r\nconst loginValidationSchema = yup.object().shape({\r\n email: yup\r\n .string()\r\n .email('Please enter valid email')\r\n .required('Email Address is Required'),\r\n password: yup\r\n .string()\r\n .min(8, ({ min }) => `Password must be at least ${min} characters`)\r\n .required('Password is required'),\r\n});\r\n\r\nconst App = () => {\r\n return (\r\n <>\r\n <SafeAreaView style={styles.container}>\r\n <Text style={styles.title}>\r\n React Native Example{'\\n'}Login Screen using Formik And Yup{' '}\r\n <\/Text>\r\n <View style={styles.loginContainer}>\r\n <Formik\r\n validateOnMount={true}\r\n validationSchema={loginValidationSchema}\r\n initialValues={{ email: '', password: '' }}\r\n onSubmit={(values) => console.log(values)}>\r\n {({\r\n handleChange,\r\n handleBlur,\r\n handleSubmit,\r\n values,\r\n errors,\r\n touched,\r\n isValid,\r\n }) => (\r\n <>\r\n <TextInput\r\n name=\"email\"\r\n placeholder=\"Email Address\"\r\n style={styles.textInput}\r\n onChangeText={handleChange('email')}\r\n onBlur={handleBlur('email')}\r\n value={values.email}\r\n keyboardType=\"email-address\"\r\n \/>\r\n {errors.email && touched.email && (\r\n <Text style={styles.errorText}>{errors.email}<\/Text>\r\n )}\r\n\r\n <TextInput\r\n name=\"password\"\r\n placeholder=\"Password\"\r\n style={styles.textInput}\r\n onChangeText={handleChange('password')}\r\n onBlur={handleBlur('password')}\r\n value={values.password}\r\n secureTextEntry\r\n \/>\r\n {errors.password && touched.password && (\r\n <Text style={styles.errorText}>{errors.password}<\/Text>\r\n )}\r\n\r\n <Button\r\n onPress={handleSubmit}\r\n title=\"LOGIN\"\r\n disabled={!isValid || values.email === ''}\r\n \/>\r\n <\/>\r\n )}\r\n <\/Formik>\r\n <\/View>\r\n <\/SafeAreaView>\r\n <\/>\r\n );\r\n};\r\n\r\nconst styles = StyleSheet.create({\r\n container: {\r\n flex: 1,\r\n justifyContent: 'center',\r\n alignItems: 'center',\r\n backgroundColor: '#ecf0f1',\r\n padding: 8,\r\n },\r\n loginContainer: {\r\n width: '80%',\r\n alignItems: 'center',\r\n padding: 10,\r\n elevation: 10,\r\n },\r\n textInput: {\r\n height: 40,\r\n width: '100%',\r\n margin: 10,\r\n backgroundColor: 'white',\r\n borderColor: 'gray',\r\n borderWidth: StyleSheet.hairlineWidth,\r\n borderRadius: 10,\r\n },\r\n title: {\r\n textAlign: 'center',\r\n fontSize: 18,\r\n margin: 24,\r\n fontWeight: 'bold',\r\n },\r\n errorText: {\r\n fontSize: 10,\r\n color: 'red',\r\n },\r\n});\r\n\r\nexport default App;\r\n<\/code><\/pre>\r\n\r\n\r\n\r\n<\/p>\r\n\r\n\r\n\r\n
Link : https:\/\/snack.expo.dev\/@rudiahmad\/react-native—formik-example<\/a><\/p>\r\n\r\n\r\n\r\n<\/p>\r\n","protected":false},"excerpt":{"rendered":"
I’ll make a basic form with name, phone number, email, password, and confirm password input fields to showcase easy form-building in react native. A state is a database window or screen that has numerous...<\/p>\n","protected":false},"author":1,"featured_media":4368,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2,173],"tags":[150,145],"class_list":["post-4363","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-komputer","category-react-native","tag-react-native","tag-source-code"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.bagi2info.com\/en\/wp-json\/wp\/v2\/posts\/4363","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.bagi2info.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.bagi2info.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.bagi2info.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.bagi2info.com\/en\/wp-json\/wp\/v2\/comments?post=4363"}],"version-history":[{"count":8,"href":"https:\/\/www.bagi2info.com\/en\/wp-json\/wp\/v2\/posts\/4363\/revisions"}],"predecessor-version":[{"id":4515,"href":"https:\/\/www.bagi2info.com\/en\/wp-json\/wp\/v2\/posts\/4363\/revisions\/4515"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.bagi2info.com\/en\/wp-json\/wp\/v2\/media\/4368"}],"wp:attachment":[{"href":"https:\/\/www.bagi2info.com\/en\/wp-json\/wp\/v2\/media?parent=4363"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.bagi2info.com\/en\/wp-json\/wp\/v2\/categories?post=4363"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.bagi2info.com\/en\/wp-json\/wp\/v2\/tags?post=4363"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}