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react-nativeasyncstorage

React Native AsyncStorage: Push to an array with a key


Hi I am having trouble with adding values to an array inside AsyncStorage.

AsyncStorage.getItem('savedIds', (err, result) => {
  const id = '1';
  if (result !== null) {
      console.log('Data Found', result);
      result = JSON.parse(result);
      result.push(id);
      AsyncStorage.setItem('savedIds', JSON.stringify(result));
    } else {
      console.log('Data Not Found');
      AsyncStorage.setItem('savedIds', id);
    }
});

AsyncStorage.getItem('savedIds', (err, result) => {
  console.log(result);
});

After my the initial id is set I get the error "result.push" is not a function. What do I need to change to fix this? or is there a more elegant solution to this?


Solution

  • AsyncStorage.getItem('savedIds', (err, result) => {
      const id = [1];
      if (result !== null) {
        console.log('Data Found', result);
        var newIds = JSON.parse(result).concat(id);
        AsyncStorage.setItem('savedIds', JSON.stringify(newIds));
      } else {
        console.log('Data Not Found');
        AsyncStorage.setItem('savedIds', JSON.stringify(id));
      }
    });