react-query-est/App.js

/**
 * Sample React Native App
 * https://github.com/facebook/react-native
 *
 * @format
 */

import React from "react";
import {
  SafeAreaView,
  ScrollView,
  StatusBar,
  StyleSheet,
  Text,
  useColorScheme,
  View,
  Button,
} from "react-native";

import { useNetInfoInstance } from "@react-native-community/netinfo";

import {
  useQuery,
  useMutation,
  useQueryClient,
  QueryClient,
  QueryClientProvider,
} from "@tanstack/react-query";
import { PersistQueryClientProvider } from "@tanstack/react-query-persist-client";
import { createAsyncStoragePersister } from "@tanstack/query-async-storage-persister";
import AsyncStorage from "@react-native-async-storage/async-storage";

const queryClient = new QueryClient({
  defaultOptions: {
    queries: {
      gcTime: 1000 * 60 * 60 * 24, // 24 hours
    },
    mutations: {
      cacheTime: Infinity,
      retry: true,
    },
  },
});

const asyncStoragePersister = createAsyncStoragePersister({
  storage: AsyncStorage,
});


// Define the "addTodo" mutation
queryClient.setMutationDefaults(["addTodo"], {
  mutationFn: ({ page }) => {
    return makeCall(page);
  },
  retry: 3,
});


function makeCall(page) {
  return fetch(`http://10.0.2.2:8080/${page}`)
    .then(response => {
      return response;
    })
    .catch(error => {
      console.log(error);
      console.log(12);
    });
}

function App() {
  return (
    <PersistQueryClientProvider
      client={queryClient}
      persistOptions={{ persister: asyncStoragePersister }}
      onSuccess={() => {
        queryClient.resumePausedMutations().then(() => {
          queryClient.invalidateQueries();
        });
      }}
    >
      <SafeAreaView>
        <View>
          <ReqButton />
        </View>
      </SafeAreaView>
    </PersistQueryClientProvider>

  );
}

const ReqButton = () => {
  const mutation = useMutation({ mutationKey: ["addTodo"] });
  const query = useQuery({ queryKey: ["todos"], queryFn: () => makeCall("a") });

  return (
    <>
      <Button
        title={"Request"}
        onPress={() => mutation.mutate({ page: "a" })}
      />
      <Text>{query.data && query.data.toString() || ''}</Text>
    </>
  );
};

export default App;