Formik values empty - reactjs

Question

I have the following Formik form
<Formik
initialValues={{
email: '',
password: ''
}}
onSubmit={(values, { setSubmitting }) => {
console.log(JSON.stringify(values));
setSubmitting(true);
fetch('/login', {
method: 'POST',
body: JSON.stringify(values),
headers: {
'Content-Type': 'application/json'
}
})
.then(res => res.json())
.then(response => {
console.log(response);
setSubmitting(false);
if (!response.success) return showAlert();
login(response.user);
history.push('/');
})
.catch(console.log);
}}
>
{({ isSubmitting }) => (
<Form className={classes.form}>
<TextField
required
variant="outlined"
margin="normal"
fullWidth
label="Email"
name="email"
autoFocus
/>
<TextField
required
variant="outlined"
margin="normal"
fullWidth
name="password"
label="Wachtwoord"
type="password"
/>
<Button
type="submit"
fullWidth
variant="contained"
color="primary"
className={classes.submit}
disabled={isSubmitting}
>
Log in
</Button>
<Grid container>
<Grid item xs>
<Link href="/register" variant="body2">
{'Nog geen account? Registreer nu!'}
</Link>
</Grid>
</Grid>
</Form>
)}
</Formik>
For some reason the values in the onSubmit are empty, how can I set it to the values inside the form? The only difference between this form and another one I got to work is that this one does not have a validation schema but I can not imagine that is required

Answer 1

You should take a look at the example in formik's docs.
TextField isn't connect to Formik. When the value of TextField changes, Formik don't change, you need Field (import { Field } from 'formik') that will render TextField.
Example for email
<Field
name="email"
render={({ field /* _form */ }) => (
<TextField
required
variant="outlined"
margin="normal"
fullWidth
label="Email"
autoFocus
{...field}
/>
)}
/>
If you are using a external input, you should use this way.

Answer 2

You need to pass this
onChangeText={handleChange('email')}
onBlur={handleBlur('email')}
value={values.email}
to the Textinput, and for Password aswell.
Your Textinput doesn't track any changes or submission.
Check here