updating state using name attribute on TextInput react-native - react-native

Question

i'm attempting to update a state onChange within a form. When I type in the form my app crashes with this error
TypeError undefined is not an object react-native (evaluating e.target)
I'm trying to use [e.target.name] to select the appropriate state to update using my elements.
maybe i'm missing something small but I have pretty much the exact same code running in a react web project and it works fine?
here's my current form
export default class CreateNote extends Component {
state = {
modalVisible: false,
title: "",
who: "",
time: ""
};
setModalVisible(visible) {
this.setState({ modalVisible: visible });
}
onTextChange = (e) => {
this.setState({ [e.target.name]: e.target.value });
};
createNoteView=()=>{
if(this.state.modalVisible === true){
return (
<View style={{ marginTop: 10 }}>
<Button title="cancel" onPress={()=>this.setState({modalVisible:false})}></Button>
<TextInput
placeholder="title"
name = "title"
type="text"
onChange={()=>{this.onTextChange()}}
/>
<TextInput
placeholder="who"
name = "who"
type="text"
onChange={()=>{this.onTextChange()}}
/>
<TextInput
placeholder="when"
name = "time"
type="text"
onChange={()=>{this.onTextChange()}}
/>
</View>
)
}
return (
<View style={{ marginTop: 22, width: 150 }}>
<Button onPress={()=>{this.setModalVisible(!this.state.modalVisible)}} title="create"></Button>
</View>
)
}
render() {
return(
<View>
{this.createNoteView()}
</View>
)
}
}

Answer 1

You should use onChangeText method like below.
onTextChange = (name) => (value) => {
this.setState({ [name]: value });
};
...other code...
<TextInput
placeholder="title"
onChangeText={this.onTextChange("title")}
/>
You can refer onChangeText here
If you want to use onChange instead of onChangeText then you should use somthing like event.nativeEvent.text
onTextChange = (name) => (event) => {
this.setState({ [name]: event.nativeEvent.text });
};
...other code...
<TextInput
placeholder="title"
onChange={this.onTextChange("title")}
/>