如何在 React Native 中重置 state 的值？

Question

I want to reset and save the state of the items inside initialState to 0 on the click of the button resetvalues .

const initialState = {
  present_count: [0, 0, 0, 0, 0, 0, 0],
  total_count: [0, 0, 0, 0, 0, 0, 0],
  present: 0,
  total: 0
};

export default class MarkAttendanceScreen extends Component {
  constructor(props) {
    super(props);
    this.state = { 
      subjects: [],
      text: "",
      ...initialState,
    }
  }

  resetvalues = () => { 
    this.setState({ ...initialState });
  };

 ...

};

NOTE: The current code is not changing and saving the state of those values. I used an alert box to check if the function is accessible, that is working fine. I am using AsyncStorage to save the modified state.

Answer 1

Got it working!

const defaultState = {
  subjects: [],
  text: "",
  present_count: [0, 0, 0, 0, 0, 0, 0],
  total_count: [0, 0, 0, 0, 0, 0, 0],
  present: 0,
  total: 0
}

export default class MarkAttendanceScreen extends Component {

  constructor(props) {
    super(props);
    this.state = {
      ...defaultState,
      refreshing: false,
    }
  }

  resetvalues = () => {
    this.setState({
      ...defaultState,
      subjects: this.state.subjects,
      text: this.state.text
    });
  };
  ...
};