CODEWITHSUNDEEP
androidfirebasefirebase-realtime-databasedata-retrieval
jwen
jwen

Reputation: 157

Getting specific location's latitude and longitude data set saved in Firebase

In my Firebase Database, I set it like this:

Current Firebase data

The latitude and longitude are represented by 0 and 1 respectively. I am currently using hard-coded method to obtain the latitude, longitude and name:

Firebase locationRef = mRootRef.child("loc");
        locationRef.addValueEventListener(new com.firebase.client.ValueEventListener() {
            @Override
            public void onDataChange(com.firebase.client.DataSnapshot dataSnapshot) {

                Double latitude = dataSnapshot.child("0").getValue(Double.class);
                Double longitude = dataSnapshot.child("1").getValue(Double.class);
                String name = dataSnapshot.child("name").getValue(String.class);}
            @Override
            public void onCancelled(FirebaseError firebaseError) {
                throw firebaseError.toException();

            }
        });

Now I set my data as shown in the image:

New Firebase data set

How can I obtain the data value of variable (0, 1 and name) for loc1 and loc2 in a manner that I can obtain them easily without hard-coding. The number of locations will increase in number too in the future too.

Upvotes: 0

Views: 1635

Answers (1)

Miral Bhalani
Miral Bhalani

Reputation: 274

I think you need something like folowing

Need to add getChildren() foreach it will give your all location under loc you can take that info in some other array also

Firebase locationRef = mRootRef.child("loc");
locationRef.addValueEventListener(new com.firebase.client.ValueEventListener() {
    @Override
    public void onDataChange(com.firebase.client.DataSnapshot dataSnapshot) {


        for (DataSnapshot snapm: dataSnapshot.getChildren()) {

            Double latitude = snapm.child("0").getValue(Double.class);
            Double longitude = snapm.child("1").getValue(Double.class);
            String name = snapm.child("name").getValue(String.class);}
        }
    @Override
    public void onCancelled(FirebaseError firebaseError) {
        throw firebaseError.toException();

    }
});

Upvotes: 1

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