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Hi, I’m new to Android Programming. I’m trying to put a custom Alertdialog in an Activity in this Alertdialog I want to put a listview that calls items present in my Firebase database. But when I click to open the Error Alertdialog and to. Follow the class code:
package com.cpcp.jaykl.pesquisacpcp;
import android.content.DialogInterface;
import android.support.design.widget.FloatingActionButton;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import com.google.firebase.FirebaseApp;
import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.ValueEventListener;
import java.util.ArrayList;
import java.util.List;
import java.util.zip.Inflater;
public class ListaProdutos extends AppCompatActivity {
private static FirebaseDatabase firebaseDatabase;
DatabaseReference databaseReference;
List<BdProdutos> listProdutos = new ArrayList<BdProdutos>();
ArrayAdapter<BdProdutos> arrayAdapterProdutos;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_lista_produtos);
inicializarFireBase();
FloatingActionButton fab = findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view)
{
chamaTela();
}
});
}
private void inicializarFireBase()//inicializa o fireBase
{
if(firebaseDatabase == null)
{
firebaseDatabase = FirebaseDatabase.getInstance();
}
FirebaseApp.initializeApp(ListaProdutos.this);
databaseReference = firebaseDatabase.getReference();
}
private void chamaTela()
{
final AlertDialog.Builder dialogBuilder = new AlertDialog.Builder(this);
LayoutInflater inflater = this.getLayoutInflater();
final View dialogView = inflater.inflate(R.layout.teste_dialog, null);
dialogBuilder.setView(dialogView);
dialogBuilder.setMessage("Testando Tela");
final ListView listViewTeste = (ListView)findViewById(R.id.listViewTeste);
databaseReference.child("Produtos").orderByChild("nome").addValueEventListener(new ValueEventListener()
{
@Override
public void onDataChange(DataSnapshot dataSnapshot)
{
for (DataSnapshot objSnapshot : dataSnapshot.getChildren())
{
BdProdutos bdProdutos = objSnapshot.getValue(BdProdutos.class);
listProdutos.add(bdProdutos);
arrayAdapterProdutos = new ArrayAdapter<BdProdutos>(ListaProdutos.this,
android.R.layout.simple_list_item_1, listProdutos);
listViewTeste.setAdapter(arrayAdapterProdutos);
}
}
@Override
public void onCancelled(DatabaseError databaseError)
{
}
});
dialogBuilder.setPositiveButton("Ok", new DialogInterface.OnClickListener()
{
@Override
public void onClick(DialogInterface dialog, int which)
{
}
});
AlertDialog b = dialogBuilder.create();
b.show();
}
}
What is the error displayed in logcat?
– Leonardo Lima
found this response in stackoverflow en, take a look
– Gaspar