In React Native on iOS, is there a way to determine when an app is resumed? Such as an onResume event?

Question

I'm trying to determine when an app is resumed. For instance, when you open the app, press the home button on the device, and then go back into the app.

Answer 1

Hope you are looking for this. Documentation Here

getInitialState: function() {
  return {
    currentAppState: AppStateIOS.currentState,
  };
},
componentDidMount: function() {
  AppStateIOS.addEventListener('change', this._handleAppStateChange);
},
componentWillUnmount: function() {
    AppStateIOS.removeEventListener('change', this._handleAppStateChange);
},
_handleAppStateChange: function(currentAppState) {
  this.setState({ currentAppState, });
},
render: function() {
  return (
     <Text>Current state is: {this.state.currentAppState}</Text>
 );
},