AsyncStorage in react native

Question

componentDidMount(){

    console.log("get")
    AsyncStorage.getItem('token')
                    .then((res)=>{
                console.log(res)    
            })

}

I have componentDidMount with console.log and AsyncStorage.getItem function.I want to make axios call after getting the token value.
But the thing is AsyncStorage.getItem is not working get //console.log('get') is printed as log without res.
Any help please how to get value? am I doing something wrong?

I would start by adding a .catch() .method to your promise chain to see if you are getting any errors. — Matt Greenberg
– Matt Greenberg, Commented Sep 10, 2018 at 20:02
@ mattdevio I added .catch() now but no error is printed in that. — Rajan Lagah
– Rajan Lagah, Commented Sep 10, 2018 at 20:10

crystal_17 · Accepted Answer · 2018-09-10 20:04:04Z

2

You can do it as follows.

componentDidMount(){
    this.onGetToken();
}
onGetToken = async () => {
    try {
      const token = await AsyncStorage.getItem('token');
      console.log("get")
      // call api using axios with token value
    } catch(e => console.info('error for getting token', e))
}

edited Sep 10, 2018 at 20:04

answered Sep 10, 2018 at 19:58

crystal_17

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8 Comments

Matt Greenberg Over a year ago

If the getItem() method returns a promise then both your code and his are identical in terms of behavior.

crystal_17 Over a year ago

that's why we use await keyword.

Matt Greenberg Over a year ago

Which is why your code won't solve his problem. Its the same functionality.

crystal_17 Over a year ago

I updated the answer, I think the current token value is null or undefined.

Matt Greenberg Over a year ago

Thats possible.

|

Rajan Lagah · Accepted Answer · 2018-09-10 20:40:45Z

0

Try to Just restart the app and asyncStorage will behave properly.

answered Sep 10, 2018 at 20:40

Rajan Lagah

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