Patch bugs AddFriendActivity

app/src/main/java/be/lepl1509group13/workoutwarrior/AddFriendActivity.java

@@ -30,6 +30,8 @@ public class AddFriendActivity extends AppCompatActivity {
     private final FirebaseDatabase firebaseDb = FirebaseDatabase.getInstance();
     private DatabaseReference db;
     private String userPseudo;
+    private ValueEventListener checkPseudo;
+    private ValueEventListener checkIfFriends;
 
     @Override
     protected void onCreate(Bundle savedInstanceState) {
@@ -82,7 +84,7 @@ public class AddFriendActivity extends AppCompatActivity {
     }
 
     private void checkPseudo(String pseudo) {
-        db.addValueEventListener(new ValueEventListener() {
+        checkPseudo = new ValueEventListener() {
             @Override
             public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
                 for (DataSnapshot childSnapshot: dataSnapshot.getChildren()) {
@@ -101,11 +103,12 @@ public class AddFriendActivity extends AppCompatActivity {
             public void onCancelled(@NonNull DatabaseError error) {
                 Toast.makeText(AddFriendActivity.this, "Erreur !", Toast.LENGTH_SHORT).show();
             }
-        });
+        };
+        db.addValueEventListener(checkPseudo);
     }
 
     private void checkIfAlreadyFriends(String newFriendPseudo, String userPseudo) {
-        db.addValueEventListener(new ValueEventListener() {
+        checkIfFriends = new ValueEventListener() {
             @Override
             public void onDataChange(@NonNull DataSnapshot dataSnapshot) {
                 DataSnapshot friendsList = dataSnapshot.child(userPseudo);
@@ -125,7 +128,9 @@ public class AddFriendActivity extends AppCompatActivity {
             public void onCancelled(@NonNull DatabaseError error) {
                 Toast.makeText(AddFriendActivity.this, "Erreur !", Toast.LENGTH_SHORT).show();
             }
-        });
+        };
+        db.addValueEventListener(checkIfFriends);
+        //db.removeEventListener(checkIfFriends);
     }
 
     private void addFriendship(String userPseudo, String newFriendPseudo) {
@@ -137,10 +142,18 @@ public class AddFriendActivity extends AppCompatActivity {
         try {
             db.updateChildren(updates);
             Toast.makeText(AddFriendActivity.this, "Ami ajouté !", Toast.LENGTH_SHORT).show();
+            resetFirebaseQuery();
             finish();
             return;
         } catch (Exception e){
             Log.d("error", "savePseudo: " + e);
         }
     }
+
+    private void resetFirebaseQuery(){
+        //stop each onDataChange query
+        db = firebaseDb.getReference("Friends");
+        db.removeEventListener(checkPseudo);
+        db.removeEventListener(checkIfFriends);
+    }
 }
\ No newline at end of file