CODEWITHSUNDEEP
androidstringfirebase-realtime-databaseonclickgetvalue
Ouertani Saiid
Ouertani Saiid

Reputation: 49

Get second Onclicklistener values

I have String values in firebase database I would like to get this String in onClick i make a toast for display the value but the value is toasted in the second click 

protected void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_souslistecuisine);
    cuisinecomplet=(ImageView)findViewById(R.id.cuisinecomplett);

    FirebaseDatabase database= FirebaseDatabase.getInstance();
    DatabaseReference myRef=database.getReference("Produit");
    DatabaseReference key=myRef.child("Cuisine");
    DatabaseReference text=key.child("cuisine complet");
    text1=text.child("text1");
    text1.addValueEventListener(new ValueEventListener() {
        @Override
        public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
            txt=dataSnapshot.getValue(String.class);
        }

        @Override
        public void onCancelled(@NonNull DatabaseError databaseError) {

        }
    });



}
public void complet(View view) {

    Toast.makeText(souslistecuisine.this, txt, Toast.LENGTH_LONG).show();


}

I tried to put text1.addValueEventListener(new ValueEventListener()) in Onclick method but same result

Upvotes: 0

Views: 63

Answers (1)

Zain
Zain

Reputation: 40820

Just add the Toast after you already receive the String value from Firebase, as Firebase callbacks run in background thread and take time to response.

text1.addValueEventListener(new ValueEventListener() {
    @Override
    public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
        txt=dataSnapshot.getValue(String.class);
        Toast.makeText(souslistecuisine.this, txt, Toast.LENGTH_LONG).show();
    }

    @Override
    public void onCancelled(@NonNull DatabaseError databaseError) {

    }
});

Upvotes: 1

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