undefined _ExpoTaskManager.default.EVENT_Name

#1

Hello. I’m trying to implement the new feature “TaskManager” to get the location of device in the background. My code is very similar to the one in the docs, but when I run the code, I get the following error: "undefined is not an object (evaluating ‘_ExpoTaskManager.default.EVENT_NAME’).
Can you help me with this? I need a solution as quickly as possible.
I try to run this on an android device with Expo. Thank you !

import React from 'react';
import { Location, TaskManager } from 'expo';
import { Text, Button } from 'react-native';

const LOCATION_TASK_NAME = 'background-location-task';

export default class Component extends React.Component {
  onPress = async () => {
    await Location.startLocationUpdatesAsync(LOCATION_TASK_NAME, {
      accuracy: Location.Accuracy.Balanced,
    });
  };

  render() {
    return (
      <Button onPress={this.onPress}>
        <Text>Enable background location</Text>
      </Button>
    );
  }
}

TaskManager.defineTask(LOCATION_TASK_NAME, ({ data, error }) => {
  if (error) {
    // Error occurred - check `error.message` for more details.
    return;
  }
  if (data) {
    const { locations } = data;
    // do something with the locations captured in the background
  }
});
#2

I have the same issue.
I solved this by changing the app.json.
from “sdkVersion”: “31.0.0”,
to “sdkVersion”: “32.0.0”,
then it worked.

2 Likes
#3

I solved this issue today. I changed the version in app.json. Thanks anyway!

1 Like
closed #4

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