对不起,如果我的英语不好。 但我希望你能理解我编码中的错误。
我想从函数中检索值" ambilKey()"获得" hasilKey"的价值在外部方法onDataChange()中。请把我需要的代码告诉我#34; hasiKey"在外部方法onDataChange()。
[MyPictureDatabaseFirebase] [1]
[MyPictureResultLog] [2]
public class IbuActivity extends AppCompatActivity {
private FirebaseAuth mAuth;
private String hasilKey="error";
private DatabaseReference dbAmbilKeyPengguna;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_ibu);
mAuth=FirebaseAuth.getInstance();
//Retrieve Value hasilKey is my problem
ambilKey();
//Check Value
Log.i("Result=",hasilKey);
//hasilKey Not Working and not saved
}
private void ambilKey() {
dbAmbilKeyPengguna=FirebaseDatabase.getInstance().getReference().child("DataPengguna").child(mAuth.getCurrentUser().getUid()).child("BisnisId");
dbAmbilKeyPengguna.addValueEventListener(new ValueEventListener() {
@Override
public void onDataChange(DataSnapshot dataSnapshot) {
hasilKey=dataSnapshot.getValue(String.class);
Log.i("ResultKeyAmbilKey=",hasilKey); // Hasil Key Value Working in this method but after variable used in outside not working
}
@Override
public void onCancelled(DatabaseError databaseError) {
Log.i("Pesan","DatabaseError");
}
});
}
}