Error Handling in TextInput - React Native
By: Niraj in React-Native Tutorials on 2023-04-17
The TextInput component in React Native does not have an error property by default. However, you can implement error handling in the TextInput component by using the onBlur or onSubmitEditing event to trigger validation checks and display errors using state variables and conditional rendering. Here is an example implementation:
import React, { useState } from 'react';
import { TextInput, View, Text } from 'react-native';
const MyTextInput = () => {
const [value, setValue] = useState('');
const [error, setError] = useState('');
const handleBlur = () => {
if (value === '') {
setError('This field is required.');
} else {
setError('');
}
};
return (
<View>
<TextInput
value={value}
onChangeText={setValue}
onBlur={handleBlur}
/>
{error !== '' && <Text style={{ color: 'red' }}>{error}</Text>}
</View>
);
};
export default MyTextInput;
In this example, the handleBlur function is triggered when the TextInput loses focus. It checks if the value of the TextInput is empty and sets an error message if it is. The error message is then displayed using conditional rendering.
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