error while fetching data from firebase push notification











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0
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I'm new to react native and I'm working on firebase push notification. I'm getting the notification, but the problem is I'm not able to fetch data and display it in flatlist. Notification are shown perfectly. But the problem is why I can't fetch data.



componentWillMount() {

    const firebase = require("firebase");

    if (!firebase.apps.length) {

        firebase.initializeApp(db);

    }

    this.fetchEventsList()

}

// Fetch events list

fetchEventsList = () => {

    Preference.set('userPhoneCheck', '+917508060520');

    let phone = Preference.get('userPhoneCheck');



    firebase.database().ref('/users').child(phone).child('/events').once('value').then((snapshot) => {

        let data = snapshot.val();

        let items = Object.values(data);

        this.setState({

            userEventsList: items

        });

        // this.deleteOldEvents();

        this.initAllEventList();

    }).then((data) => {}).catch((error) => {

        //error callback

        console.log('error ', error)

    })

}





//fetch the friends list according to group name

initAllEventList = () => {

    //let groupName='G1';

    let eventId = '';

    let userEventsList = [...this.state.userEventsList];

    for (var i = 0; i < userEventsList.length; i++) {

        eventId = userEventsList[i].eventId;

        ToastAndroid.show("eventId>" + eventId, ToastAndroid.SHORT);

        if (eventId != '') {

            this.fetchFriendsList(eventId);

        }

    }

}

//app users remove that not in contacts

fetchFriendsList = (eventId) => {

    let allEventsList = [...this.state.allEventsList];

    firebase.database().ref('/events').child(eventId).once('value').then((snapshot) => {

        let data = snapshot.val();

        let items = Object.values(data);



        allEventsList.push(items);

        this.setState({

            allEventsList: allEventsList

        });



        ToastAndroid.show("kk>" + allEventsList.length, ToastAndroid.SHORT);



    }).then((data) => {



    }).catch((error) => {

        //error callback

        console.log('error ', error)

    })

}





javascript reactjs firebase react-native firebase-realtime-database







share|improve this question




















  • 2




    When you run this code, which precise piece of it doesn't do what you expect it to do?
    – Frank van Puffelen
    9 hours ago















up vote
0
down vote

favorite












I'm new to react native and I'm working on firebase push notification. I'm getting the notification, but the problem is I'm not able to fetch data and display it in flatlist. Notification are shown perfectly. But the problem is why I can't fetch data.



componentWillMount() {

    const firebase = require("firebase");

    if (!firebase.apps.length) {

        firebase.initializeApp(db);

    }

    this.fetchEventsList()

}

// Fetch events list

fetchEventsList = () => {

    Preference.set('userPhoneCheck', '+917508060520');

    let phone = Preference.get('userPhoneCheck');



    firebase.database().ref('/users').child(phone).child('/events').once('value').then((snapshot) => {

        let data = snapshot.val();

        let items = Object.values(data);

        this.setState({

            userEventsList: items

        });

        // this.deleteOldEvents();

        this.initAllEventList();

    }).then((data) => {}).catch((error) => {

        //error callback

        console.log('error ', error)

    })

}





//fetch the friends list according to group name

initAllEventList = () => {

    //let groupName='G1';

    let eventId = '';

    let userEventsList = [...this.state.userEventsList];

    for (var i = 0; i < userEventsList.length; i++) {

        eventId = userEventsList[i].eventId;

        ToastAndroid.show("eventId>" + eventId, ToastAndroid.SHORT);

        if (eventId != '') {

            this.fetchFriendsList(eventId);

        }

    }

}

//app users remove that not in contacts

fetchFriendsList = (eventId) => {

    let allEventsList = [...this.state.allEventsList];

    firebase.database().ref('/events').child(eventId).once('value').then((snapshot) => {

        let data = snapshot.val();

        let items = Object.values(data);



        allEventsList.push(items);

        this.setState({

            allEventsList: allEventsList

        });



        ToastAndroid.show("kk>" + allEventsList.length, ToastAndroid.SHORT);



    }).then((data) => {



    }).catch((error) => {

        //error callback

        console.log('error ', error)

    })

}





javascript reactjs firebase react-native firebase-realtime-database







share|improve this question




















  • 2




    When you run this code, which precise piece of it doesn't do what you expect it to do?
    – Frank van Puffelen
    9 hours ago













up vote
0
down vote

favorite









up vote
0
down vote

favorite











I'm new to react native and I'm working on firebase push notification. I'm getting the notification, but the problem is I'm not able to fetch data and display it in flatlist. Notification are shown perfectly. But the problem is why I can't fetch data.



componentWillMount() {

    const firebase = require("firebase");

    if (!firebase.apps.length) {

        firebase.initializeApp(db);

    }

    this.fetchEventsList()

}

// Fetch events list

fetchEventsList = () => {

    Preference.set('userPhoneCheck', '+917508060520');

    let phone = Preference.get('userPhoneCheck');



    firebase.database().ref('/users').child(phone).child('/events').once('value').then((snapshot) => {

        let data = snapshot.val();

        let items = Object.values(data);

        this.setState({

            userEventsList: items

        });

        // this.deleteOldEvents();

        this.initAllEventList();

    }).then((data) => {}).catch((error) => {

        //error callback

        console.log('error ', error)

    })

}





//fetch the friends list according to group name

initAllEventList = () => {

    //let groupName='G1';

    let eventId = '';

    let userEventsList = [...this.state.userEventsList];

    for (var i = 0; i < userEventsList.length; i++) {

        eventId = userEventsList[i].eventId;

        ToastAndroid.show("eventId>" + eventId, ToastAndroid.SHORT);

        if (eventId != '') {

            this.fetchFriendsList(eventId);

        }

    }

}

//app users remove that not in contacts

fetchFriendsList = (eventId) => {

    let allEventsList = [...this.state.allEventsList];

    firebase.database().ref('/events').child(eventId).once('value').then((snapshot) => {

        let data = snapshot.val();

        let items = Object.values(data);



        allEventsList.push(items);

        this.setState({

            allEventsList: allEventsList

        });



        ToastAndroid.show("kk>" + allEventsList.length, ToastAndroid.SHORT);



    }).then((data) => {



    }).catch((error) => {

        //error callback

        console.log('error ', error)

    })

}





javascript reactjs firebase react-native firebase-realtime-database







share|improve this question















I'm new to react native and I'm working on firebase push notification. I'm getting the notification, but the problem is I'm not able to fetch data and display it in flatlist. Notification are shown perfectly. But the problem is why I can't fetch data.



componentWillMount() {

    const firebase = require("firebase");

    if (!firebase.apps.length) {

        firebase.initializeApp(db);

    }

    this.fetchEventsList()

}

// Fetch events list

fetchEventsList = () => {

    Preference.set('userPhoneCheck', '+917508060520');

    let phone = Preference.get('userPhoneCheck');



    firebase.database().ref('/users').child(phone).child('/events').once('value').then((snapshot) => {

        let data = snapshot.val();

        let items = Object.values(data);

        this.setState({

            userEventsList: items

        });

        // this.deleteOldEvents();

        this.initAllEventList();

    }).then((data) => {}).catch((error) => {

        //error callback

        console.log('error ', error)

    })

}





//fetch the friends list according to group name

initAllEventList = () => {

    //let groupName='G1';

    let eventId = '';

    let userEventsList = [...this.state.userEventsList];

    for (var i = 0; i < userEventsList.length; i++) {

        eventId = userEventsList[i].eventId;

        ToastAndroid.show("eventId>" + eventId, ToastAndroid.SHORT);

        if (eventId != '') {

            this.fetchFriendsList(eventId);

        }

    }

}

//app users remove that not in contacts

fetchFriendsList = (eventId) => {

    let allEventsList = [...this.state.allEventsList];

    firebase.database().ref('/events').child(eventId).once('value').then((snapshot) => {

        let data = snapshot.val();

        let items = Object.values(data);



        allEventsList.push(items);

        this.setState({

            allEventsList: allEventsList

        });



        ToastAndroid.show("kk>" + allEventsList.length, ToastAndroid.SHORT);



    }).then((data) => {



    }).catch((error) => {

        //error callback

        console.log('error ', error)

    })

}





javascript reactjs firebase react-native firebase-realtime-database




javascript reactjs firebase react-native firebase-realtime-database






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited 9 hours ago









Frank van Puffelen

219k25361387




219k25361387










asked 15 hours ago









shabnam singh

256




256








  • 2




    When you run this code, which precise piece of it doesn't do what you expect it to do?
    – Frank van Puffelen
    9 hours ago














  • 2




    When you run this code, which precise piece of it doesn't do what you expect it to do?
    – Frank van Puffelen
    9 hours ago








2




2




When you run this code, which precise piece of it doesn't do what you expect it to do?
– Frank van Puffelen
9 hours ago




When you run this code, which precise piece of it doesn't do what you expect it to do?
– Frank van Puffelen
9 hours ago

















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