I cannot update the existing value in text input.
<TextField
label='Email Id'
//placeholder={value_email}
onChangeText={(email) => this.setState({ email })}
value={value_email}
/>
here value_email is
const value_email = this.state.userInfo.email;
Thanks.
this.setState({ email }
Sets the email to state object (this.state.email) but you are reading it from state.userInfo
.
If you are setting it to state variable you need to change to
const value_email = this.state.email;