onDateChange callback is made with old date value

[jleon6626]

Issue

onDateChange callback is made with old date value. In datepicker.js "onDatePicked", the state is set with setState, then the callback occurs immediately after, but the date value in setState isn't guaranteed to be set until next redraw so the current value of state.date is sent in the callback.

Expected Behavior

correct new date value passed into the onDateChange callback

Code

onDatePicked({action, year, month, day}) {
      this.setState({
        date: new Date(year, month, day)  // <= new state,date isn't guaranteed to be ready!!
      });
      this.datePicked();  // <= callback made here

// I kludge fix it by making my own datePicked function and passing in the new date to that
 onDatePicked({action, year, month, day}) {
    if (action !== DatePickerAndroid.dismissedAction) {
      this.setState({
        date: new Date(year, month, day)
      });
    //  this.datePicked();
      this.datePickedKludge( new Date(year, month, day) );
    } else {
      this.onPressCancel();
    }
  }

Environment

1. react-native -v: 16.8.3
2. node -v: v10.15.3
3. npm -v:
4. yarn --version:
5. target platform: Android
6. operating system: Win10

[penghaogit]

this.datePickedKludge ？？What is it?

[kelement]

we will change this.datePicked to setState's callback, guaranteed state is new state