"React-Native AsyncStorage：TypeError：無法讀取未定義的屬性“setItem”"

Question

我正在學習 react-native 並嘗試使用AsyncStorage<\/code> 。 我正在使用此代碼來存儲數據：

_storeData = async (token) => {
    console.log("store token");
    console.log(token);
    try {
      await AsyncStorage.setItem('token', token);
    } catch (error) {
      // Error saving data
      console.log(error);
    }
  }

Answer 1

我正在學習react-native並嘗試使用AsyncStorage 。 我正在使用以下代碼來存儲數據：

_storeData = async (token) => {
    console.log("store token");
    console.log(token);
    try {
      await AsyncStorage.setItem('token', token);
    } catch (error) {
      // Error saving data
      console.log(error);
    }
  }

調用它： this._storeData(res.token);

但這給了我這個錯誤：

> TypeError: Cannot read property 'setItem' of undefined
>     at LoginOrCreateForm._callee$ (blob:http://localhost:8081/21ec2746-a3c9-4c68-937f-ee50c63a6d58:138096:71)
>     at tryCatch (blob:http://localhost:8081/21ec2746-a3c9-4c68-937f-ee50c63a6d58:21408:19)
>     at Generator.invoke [as _invoke] (blob:http://localhost:8081/21ec2746-a3c9-4c68-937f-ee50c63a6d58:21583:24)
>     at Generator.prototype.(anonymous function) [as next] (blob:http://localhost:8081/21ec2746-a3c9-4c68-937f-ee50c63a6d58:21451:23)
>     at tryCatch (blob:http://localhost:8081/21ec2746-a3c9-4c68-937f-ee50c63a6d58:21408:19)
>     at invoke (blob:http://localhost:8081/21ec2746-a3c9-4c68-937f-ee50c63a6d58:21484:22)
>     at blob:http://localhost:8081/21ec2746-a3c9-4c68-937f-ee50c63a6d58:21514:13
>     at tryCallTwo (blob:http://localhost:8081/21ec2746-a3c9-4c68-937f-ee50c63a6d58:22690:7)
>     at doResolve (blob:http://localhost:8081/21ec2746-a3c9-4c68-937f-ee50c63a6d58:22854:15)
>     at new Promise (blob:http://localhost:8081/21ec2746-a3c9-4c68-937f-ee50c63a6d58:22713:5)

有人可以幫我解決我做錯的事情嗎？ 謝謝

Answer 2

我正在學習react-native並嘗試使用AsyncStorage 。 我正在使用以下代碼來存儲數據：

_storeData = async (token) => {
    console.log("store token");
    console.log(token);
    try {
      await AsyncStorage.setItem('token', token);
    } catch (error) {
      // Error saving data
      console.log(error);
    }
  }

調用它： this._storeData(res.token);

但這給了我這個錯誤：

> TypeError: Cannot read property 'setItem' of undefined
>     at LoginOrCreateForm._callee$ (blob:http://localhost:8081/21ec2746-a3c9-4c68-937f-ee50c63a6d58:138096:71)
>     at tryCatch (blob:http://localhost:8081/21ec2746-a3c9-4c68-937f-ee50c63a6d58:21408:19)
>     at Generator.invoke [as _invoke] (blob:http://localhost:8081/21ec2746-a3c9-4c68-937f-ee50c63a6d58:21583:24)
>     at Generator.prototype.(anonymous function) [as next] (blob:http://localhost:8081/21ec2746-a3c9-4c68-937f-ee50c63a6d58:21451:23)
>     at tryCatch (blob:http://localhost:8081/21ec2746-a3c9-4c68-937f-ee50c63a6d58:21408:19)
>     at invoke (blob:http://localhost:8081/21ec2746-a3c9-4c68-937f-ee50c63a6d58:21484:22)
>     at blob:http://localhost:8081/21ec2746-a3c9-4c68-937f-ee50c63a6d58:21514:13
>     at tryCallTwo (blob:http://localhost:8081/21ec2746-a3c9-4c68-937f-ee50c63a6d58:22690:7)
>     at doResolve (blob:http://localhost:8081/21ec2746-a3c9-4c68-937f-ee50c63a6d58:22854:15)
>     at new Promise (blob:http://localhost:8081/21ec2746-a3c9-4c68-937f-ee50c63a6d58:22713:5)

有人可以幫我解決我做錯的事情嗎？ 謝謝

Answer 3

我面臨着同樣的問題。

如果你正在使用

然后按照https:\/\/react-native-async-storage.github.io\/async-storage\/docs\/install\/<\/a>在您的項目中安裝 AsyncStorage。

安裝和鏈接完成后，將其導入您的項目：

import AsyncStorage from '@react-native-async-storage/async-storage';

Answer 4

我正在學習react-native並嘗試使用AsyncStorage 。 我正在使用以下代碼來存儲數據：

_storeData = async (token) => {
    console.log("store token");
    console.log(token);
    try {
      await AsyncStorage.setItem('token', token);
    } catch (error) {
      // Error saving data
      console.log(error);
    }
  }

調用它： this._storeData(res.token);

但這給了我這個錯誤：

> TypeError: Cannot read property 'setItem' of undefined
>     at LoginOrCreateForm._callee$ (blob:http://localhost:8081/21ec2746-a3c9-4c68-937f-ee50c63a6d58:138096:71)
>     at tryCatch (blob:http://localhost:8081/21ec2746-a3c9-4c68-937f-ee50c63a6d58:21408:19)
>     at Generator.invoke [as _invoke] (blob:http://localhost:8081/21ec2746-a3c9-4c68-937f-ee50c63a6d58:21583:24)
>     at Generator.prototype.(anonymous function) [as next] (blob:http://localhost:8081/21ec2746-a3c9-4c68-937f-ee50c63a6d58:21451:23)
>     at tryCatch (blob:http://localhost:8081/21ec2746-a3c9-4c68-937f-ee50c63a6d58:21408:19)
>     at invoke (blob:http://localhost:8081/21ec2746-a3c9-4c68-937f-ee50c63a6d58:21484:22)
>     at blob:http://localhost:8081/21ec2746-a3c9-4c68-937f-ee50c63a6d58:21514:13
>     at tryCallTwo (blob:http://localhost:8081/21ec2746-a3c9-4c68-937f-ee50c63a6d58:22690:7)
>     at doResolve (blob:http://localhost:8081/21ec2746-a3c9-4c68-937f-ee50c63a6d58:22854:15)
>     at new Promise (blob:http://localhost:8081/21ec2746-a3c9-4c68-937f-ee50c63a6d58:22713:5)

有人可以幫我解決我做錯的事情嗎？ 謝謝

Answer 5

我正在學習react-native並嘗試使用AsyncStorage 。 我正在使用以下代碼來存儲數據：

_storeData = async (token) => {
    console.log("store token");
    console.log(token);
    try {
      await AsyncStorage.setItem('token', token);
    } catch (error) {
      // Error saving data
      console.log(error);
    }
  }

調用它： this._storeData(res.token);

但這給了我這個錯誤：

> TypeError: Cannot read property 'setItem' of undefined
>     at LoginOrCreateForm._callee$ (blob:http://localhost:8081/21ec2746-a3c9-4c68-937f-ee50c63a6d58:138096:71)
>     at tryCatch (blob:http://localhost:8081/21ec2746-a3c9-4c68-937f-ee50c63a6d58:21408:19)
>     at Generator.invoke [as _invoke] (blob:http://localhost:8081/21ec2746-a3c9-4c68-937f-ee50c63a6d58:21583:24)
>     at Generator.prototype.(anonymous function) [as next] (blob:http://localhost:8081/21ec2746-a3c9-4c68-937f-ee50c63a6d58:21451:23)
>     at tryCatch (blob:http://localhost:8081/21ec2746-a3c9-4c68-937f-ee50c63a6d58:21408:19)
>     at invoke (blob:http://localhost:8081/21ec2746-a3c9-4c68-937f-ee50c63a6d58:21484:22)
>     at blob:http://localhost:8081/21ec2746-a3c9-4c68-937f-ee50c63a6d58:21514:13
>     at tryCallTwo (blob:http://localhost:8081/21ec2746-a3c9-4c68-937f-ee50c63a6d58:22690:7)
>     at doResolve (blob:http://localhost:8081/21ec2746-a3c9-4c68-937f-ee50c63a6d58:22854:15)
>     at new Promise (blob:http://localhost:8081/21ec2746-a3c9-4c68-937f-ee50c63a6d58:22713:5)

有人可以幫我解決我做錯的事情嗎？ 謝謝