I have a dummy Login code with formik form in react-native
import React, { Component } from "react";
import {
TextInput,
Text,
Alert,
Image,
View,
TouchableOpacity,
SafeAreaView,
ScrollView
} from "react-native";
import styles from "./Styles/LoginStylesheet";
import { KeyboardAccessoryNavigation } from "react-native-keyboard-accessory";
import { Formik } from "formik";
import schemaObject, { initialValues, refs } from "./Validations/LoginValidations";
export default class LoginView extends Component {
constructor(props) {
super(props);
this.state = {
activeInputIndex: 0
};
}
handleFocus = index => () => {
this.setState({
activeInputIndex: index
});
};
handleFocusNext = () => {
if (this.state.activeInputIndex + 1 >= refs.length) {
return;
}
refs[this.state.activeInputIndex + 1].focus();
};
handleFocusPrevious = () => {
if (this.state.activeInputIndex - 1 < 0) {
return;
}
refs[this.state.activeInputIndex - 1].focus();
};
handleLogin = () => {
console.log("ACTIOn");
// this.formik.handleSubmit();
};
render() {
return (
<View style={styles.safeAreaView}>
<SafeAreaView style={styles.safeAreaView}>
<ScrollView style={styles.superView}>
<Formik {/* LINE 56 */}
initialValues={initialValues}
onSubmit={values => Alert.alert(JSON.stringify(values))}
validationSchema={schemaObject}
ref={p => (this.formik = p)}
>
{({
values,
handleChange,
errors,
setFieldTouched,
touched,
isValid,
handleSubmit
}) => (
<View style={styles.superView}>
<View style={styles.logoParentView}>
<Image
source={require("../../Resources/Assets/Login/aptihealth_logo.png")}
resizeMode={"contain"}
style={styles.logo}
/>
</View>
<View style={styles.emailParentView}>
<Text style={styles.titleLabel}>Email Id</Text>
<TextInput
value={values.emailId}
onChangeText={handleChange("emailId")}
onBlur={() => setFieldTouched("emailId")}
placeholder="Email Id"
style={styles.textInput}
autoCorrect={false}
onFocus={this.handleFocus(0)}
ref={input => {
refs[0] = input;
}}
/>
{touched.emailId && errors.emailId && (
<Text style={{ fontSize: 10, color: "red" }}>
{errors.emailId}
</Text>
)}
</View>
<View style={styles.passwordParentView}>
<Text style={styles.titleLabel}>Password</Text>
<TextInput
value={values.password}
onChangeText={handleChange("password")}
placeholder="Password"
onBlur={() => setFieldTouched("password")}
style={styles.textInput}
autoCorrect={false}
secureTextEntry={true}
onFocus={this.handleFocus(1)}
ref={input => {
refs[1] = input;
}}
/>
{touched.password && errors.password && (
<Text style={{ fontSize: 10, color: "red" }}>
{errors.password}
</Text>
)}
</View>
<View style={styles.forgotPasswordParentView}>
<TouchableOpacity
style={styles.forgotpasswordButton}
activeOpacity={0.7}
>
<Text>Forgot Password?</Text>
</TouchableOpacity>
</View>
<View style={styles.loginParentView}>
<TouchableOpacity
onPress={() => {
console.log("VALUES: ", values, this.formik);
this.handleLogin();
}}
style={styles.loginButton}
activeOpacity={0.7}
>
<Text style={styles.loginText}>Login</Text>
</TouchableOpacity>
</View>
<View style={styles.seperaterParentView}>
<View style={styles.seperaterView} />
<Text style={styles.seperaterText}>OR</Text>
<View style={styles.seperaterView} />
</View>
<View style={styles.faceIdLoginParentView}>
<Image
source={require("../../Resources/Assets/face_id_small_color/face_id_small_color.png")}
resizeMode={"contain"}
/>
<TouchableOpacity style={styles.faceIdButton}>
<Text>Sign In with Face ID</Text>
</TouchableOpacity>
</View>
<View style={styles.signUpParentView}>
<TouchableOpacity style={styles.signupButton}>
<Text>Sign Up for Account Here</Text>
</TouchableOpacity>
</View>
</View>
)}
</Formik>
</ScrollView>
</SafeAreaView>
<KeyboardAccessoryNavigation
nextDisabled={false}
previousDisabled={false}
nextHidden={false}
previousHidden={false}
onNext={this.handleFocusNext}
onPrevious={this.handleFocusPrevious}
avoidKeyboard
/>
</View>
);
}
}
I am trying to console formik ref in login action getting undefined value with debug error
ExceptionsManager.js:126 Warning: Function ponents cannot be given refs. Attempts to access this ref will fail. Did you mean to use React.forwardRef()?
Check the render method of `LoginView`.
in Formik (at LoginView.js:56)
I have no idea why it's getting undefined ??
I have a dummy Login code with formik form in react-native
import React, { Component } from "react";
import {
TextInput,
Text,
Alert,
Image,
View,
TouchableOpacity,
SafeAreaView,
ScrollView
} from "react-native";
import styles from "./Styles/LoginStylesheet";
import { KeyboardAccessoryNavigation } from "react-native-keyboard-accessory";
import { Formik } from "formik";
import schemaObject, { initialValues, refs } from "./Validations/LoginValidations";
export default class LoginView extends Component {
constructor(props) {
super(props);
this.state = {
activeInputIndex: 0
};
}
handleFocus = index => () => {
this.setState({
activeInputIndex: index
});
};
handleFocusNext = () => {
if (this.state.activeInputIndex + 1 >= refs.length) {
return;
}
refs[this.state.activeInputIndex + 1].focus();
};
handleFocusPrevious = () => {
if (this.state.activeInputIndex - 1 < 0) {
return;
}
refs[this.state.activeInputIndex - 1].focus();
};
handleLogin = () => {
console.log("ACTIOn");
// this.formik.handleSubmit();
};
render() {
return (
<View style={styles.safeAreaView}>
<SafeAreaView style={styles.safeAreaView}>
<ScrollView style={styles.superView}>
<Formik {/* LINE 56 */}
initialValues={initialValues}
onSubmit={values => Alert.alert(JSON.stringify(values))}
validationSchema={schemaObject}
ref={p => (this.formik = p)}
>
{({
values,
handleChange,
errors,
setFieldTouched,
touched,
isValid,
handleSubmit
}) => (
<View style={styles.superView}>
<View style={styles.logoParentView}>
<Image
source={require("../../Resources/Assets/Login/aptihealth_logo.png")}
resizeMode={"contain"}
style={styles.logo}
/>
</View>
<View style={styles.emailParentView}>
<Text style={styles.titleLabel}>Email Id</Text>
<TextInput
value={values.emailId}
onChangeText={handleChange("emailId")}
onBlur={() => setFieldTouched("emailId")}
placeholder="Email Id"
style={styles.textInput}
autoCorrect={false}
onFocus={this.handleFocus(0)}
ref={input => {
refs[0] = input;
}}
/>
{touched.emailId && errors.emailId && (
<Text style={{ fontSize: 10, color: "red" }}>
{errors.emailId}
</Text>
)}
</View>
<View style={styles.passwordParentView}>
<Text style={styles.titleLabel}>Password</Text>
<TextInput
value={values.password}
onChangeText={handleChange("password")}
placeholder="Password"
onBlur={() => setFieldTouched("password")}
style={styles.textInput}
autoCorrect={false}
secureTextEntry={true}
onFocus={this.handleFocus(1)}
ref={input => {
refs[1] = input;
}}
/>
{touched.password && errors.password && (
<Text style={{ fontSize: 10, color: "red" }}>
{errors.password}
</Text>
)}
</View>
<View style={styles.forgotPasswordParentView}>
<TouchableOpacity
style={styles.forgotpasswordButton}
activeOpacity={0.7}
>
<Text>Forgot Password?</Text>
</TouchableOpacity>
</View>
<View style={styles.loginParentView}>
<TouchableOpacity
onPress={() => {
console.log("VALUES: ", values, this.formik);
this.handleLogin();
}}
style={styles.loginButton}
activeOpacity={0.7}
>
<Text style={styles.loginText}>Login</Text>
</TouchableOpacity>
</View>
<View style={styles.seperaterParentView}>
<View style={styles.seperaterView} />
<Text style={styles.seperaterText}>OR</Text>
<View style={styles.seperaterView} />
</View>
<View style={styles.faceIdLoginParentView}>
<Image
source={require("../../Resources/Assets/face_id_small_color/face_id_small_color.png")}
resizeMode={"contain"}
/>
<TouchableOpacity style={styles.faceIdButton}>
<Text>Sign In with Face ID</Text>
</TouchableOpacity>
</View>
<View style={styles.signUpParentView}>
<TouchableOpacity style={styles.signupButton}>
<Text>Sign Up for Account Here</Text>
</TouchableOpacity>
</View>
</View>
)}
</Formik>
</ScrollView>
</SafeAreaView>
<KeyboardAccessoryNavigation
nextDisabled={false}
previousDisabled={false}
nextHidden={false}
previousHidden={false}
onNext={this.handleFocusNext}
onPrevious={this.handleFocusPrevious}
avoidKeyboard
/>
</View>
);
}
}
I am trying to console formik ref in login action getting undefined value with debug error
ExceptionsManager.js:126 Warning: Function ponents cannot be given refs. Attempts to access this ref will fail. Did you mean to use React.forwardRef()?
Check the render method of `LoginView`.
in Formik (at LoginView.js:56)
I have no idea why it's getting undefined ??
Share Improve this question asked Dec 23, 2019 at 15:31 Abhishek ThapliyalAbhishek Thapliyal 3,7086 gold badges35 silver badges71 bronze badges1 Answer
Reset to default 15You should take a look at this issue.
You problem is here
<Formik
initialValues={initialValues}
onSubmit={values => Alert.alert(JSON.stringify(values))}
validationSchema={schemaObject}
ref={p => (this.formik = p)} {/* passing this ref will throw the error */}
>
In the latest version of Formik, they changed Formik to a functional ponent as explained in the issue, which gives you this error if you pass ref's.
You can check for the suggestions on the issue or wait until they release an update with the correction.
Edit:
Formik made an update and now you can use ref with the prop innerRef.
Please see this ment
You should change it to
<Formik
initialValues={initialValues}
onSubmit={values => Alert.alert(JSON.stringify(values))}
validationSchema={schemaObject}
{/* using innerRef instead of ref*/}
innerRef={p => (this.formik = p)} {/* this will give you the formik bag */}
>
And this way you can call this.formik.handleSubmit(), just lik you want to do.