I have a question about AsyncStorage..

console.log(this.state.UserEmail);
AsyncStorage.setItem('email', JSON.stringify(this.state.UserEmail));

the console log logs the user's email perfectly fine, but for some reason when i try to do

AsyncStorage.getItem("email").then((res) => { this.setState({username: res })});

It seems that the AsyncStorage with the item name of "email" is empty.as it does not return anything if i console.log this.state.username.

Thanks in advance,

Mario

I have a question about AsyncStorage..

console.log(this.state.UserEmail);
AsyncStorage.setItem('email', JSON.stringify(this.state.UserEmail));

the console log logs the user's email perfectly fine, but for some reason when i try to do

AsyncStorage.getItem("email").then((res) => { this.setState({username: res })});

It seems that the AsyncStorage with the item name of "email" is empty.as it does not return anything if i console.log this.state.username.

Thanks in advance,

Mario

• javascript
• react-native
• asyncstorage

Share Improve this question Follow asked Apr 20, 2018 at 13:53 MarioMario 4911 silver badge1111 bronze badges 6

• Are you calling getItem immediately after setItem? setItem is an async function, so it may not be plete immediately after. – TKoL Commented Apr 20, 2018 at 14:02
• No. I'm calling it further into the application. Could it be because i'm navigating to another view? I wouldnt think so but i'm not sure. – Mario Commented Apr 20, 2018 at 14:04
• AsyncStorage.getItem("email").then(async (res) => { const val = await res; this.setState({username: JSON.parse(val) }) }); – Vraj Solanki Commented Apr 20, 2018 at 16:07
• AsyncStorage.getItem('email').then(async (res) => { const val = await res; this.setState({username: JSON.parse(val) }) }); console.log(this.props.navigation.state.params.id + " " + this.state.typing + " " + this.state.username); The params.id works, the this.state.typing works, but the this.state.username does not :/ – Mario Commented Apr 20, 2018 at 16:22
• what is your project version? – Batu Commented Apr 20, 2018 at 17:10

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2 Answers 2

Sorted by: Reset to default 4

//check it out !

state = {
        UserEmail: '[email protected]'
      }

async setValue() {
        await AsyncStorage.setItem('email', JSON.stringify(this.state.UserEmail));
 }

 async getValue() {
  try {
       const value = await AsyncStorage.getItem('email');
         if (value !== null) {
            // We have data!!
            console.log(value);
         }
      } catch (error) {
          // Error retrieving data
    }
 }

AsyncStorage.getItem("email").then((res) => { this.setState({username: res })});

to:

AsyncStorage.getItem("email").then(async (res) => {
  const val = await res;

  this.setState({username: val })
});

should wait for response data before doing setState