How to implement focus/blur response in a custom react-native TextInput - react-native

Question

I implemented a custom react-native TextInput backed by a native library. It's working pretty well except that when I tap outside of the textfield, it doesn't blur automatically and the keyboard doesn't disappear. I also tried with Keyboard.dismiss(), it doesn't work either. I looked at the 'official' TextInput implementation to replicate it without any success.
I added this code in my custom implementation (componentDidMount)
if (this.context.focusEmitter) {
this._focusSubscription = this.context.focusEmitter.addListener(
'focus',
el => {
if (this === el) {
this.requestAnimationFrame(this.focus);
} else if (this.isFocused()) {
this.blur();
}
},
);
if (this.props.autoFocus) {
this.context.onFocusRequested(this);
}
} else {
if (this.props.autoFocus) {
this.requestAnimationFrame(this.focus);
}
}
and I also defined the required contextTypes
static contextTypes = {
focusEmitter: PropTypes.instanceOf(EventEmitter)
}
code from TextInput
The problem I have is that the focusEmitter is undefined in the context and I have no idea from where it's provided in the context nor if it's actually the way it works for the regular TextInput. The only occurence of focusEmitter I could find in the react-native repo is in NavigatorIOS which I don't even use in my app.
Could anyone clarify this to me?

Answer 1

The simpler way to do what you want is to use Keyboard.dismiss() on a TouchableWithoutFeedback just like following example:
import {Keyboard} from 'react-native';
...
render(){
return(
<TouchableWithoutFeedback onPress={() => Keyboard.dismiss()}>
<View>
// Return everything here
<TextInput />
</View>
</TouchableWithoutFeedback>
)
}
So when you tap outside the input it will dismiss keyboard and blur the TextInput.