I'm having a problem with a ListView that is not loading the values. This is my situation:
I have an application that at one point opens a TabBar with 2 Fragments and inside one of these Fragments I have a ListView that I am trying to populate through a POST request with Volley.
I'm getting values correctly through webservice and it brings results (getCount () in the Adapter has values), but it's not getting into getView () so I guess that should be why it's not displaying anything in the ListView.
Adapter:
public class LancarVendaCarrinhoListViewAdapter extends BaseAdapter
{
private Context mContext;
private List<PesquisarProdutoObjetoRetorno> mDataSource;
public LancarVendaCarrinhoListViewAdapter(Context context, List<PesquisarProdutoObjetoRetorno> items)
{
mContext = context;
mDataSource = items;
}
@Override
public int getCount() {
return mDataSource.size();
}
@Override
public Object getItem(int position) {
return mDataSource.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent)
{
try
{
LayoutInflater mInflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View sView = mInflater.inflate(R.layout.activity_lancarvenda_carrinho_list_view_item, parent, false);
PesquisarProdutoObjetoRetorno sItem = (PesquisarProdutoObjetoRetorno) getItem(position);
TextView descricao = (TextView)sView.findViewById(R.id.lancarvenda_carrinho_item_txtdescricao);
descricao.setText(sItem.getDescricao());
TextView preco = (TextView)sView.findViewById(R.id.lancarvenda_carrinho_item_txvpreco);
preco.setText(String.valueOf(sItem.getPreco()));
EditText quantidade = (EditText)sView.findViewById(R.id.lancarvenda_carrinho_item_etquantidade);
quantidade.setText("1");
return sView;
}
catch (Exception e)
{
e.printStackTrace();
return null;
}
}
public List<PesquisarProdutoObjetoRetorno> getItemList()
{
return mDataSource;
}
public void setItemList(List<PesquisarProdutoObjetoRetorno> itemList)
{
this.mDataSource = itemList;
}
}
Fragment:
public class LancarVendaCarrinhoFragment extends Fragment
{
private ListView fCarrinhoResultado;
List<PesquisarProdutoObjetoRetorno> sCarrinhoAuxiliar;
LancarVendaCarrinhoListViewAdapter sAdaptador;
private PesquisarProdutoRequest sCorpoBusca = new PesquisarProdutoRequest();
public LancarVendaCarrinhoFragment() {
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
LayoutInflater sInflater = getActivity().getLayoutInflater();
View sView = sInflater.inflate(R.layout.fragment_lancarvenda_carrinho, null);
fCarrinhoResultado = (ListView) sView.findViewById(R.id.lancarvenda_carrinho_lvwresultado);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
Time sData = new Time();
sData.setToNow();
sCorpoBusca = new PesquisarProdutoRequest();
sCorpoBusca.setIdioma("pt-BR");
sCorpoBusca.setUsaGrade(Variaveis.UsaGrade);
sCorpoBusca.setFilial(Variaveis.Filial);
sCorpoBusca.setUFFilial(Variaveis.UFFilial);
sCorpoBusca.setTipoSistema(Variaveis.TipoSistema);
sCorpoBusca.setNumeroCaixa(Variaveis.NumeroCaixa);
sCorpoBusca.setRede(Variaveis.Rede);
sCorpoBusca.setTabelaTributo((byte) 0);
sCorpoBusca.setCodigoProduto("0030900939");
PesquisarProduto();
return inflater.inflate(R.layout.fragment_lancarvenda_carrinho, container, false);
}
private void PesquisarProduto() {
RequestQueue sQueue = Volley.newRequestQueue(getActivity());
String sEnderecoBase = "http://www.minha-url";
sCarrinhoAuxiliar = new ArrayList<>();
StringRequest sRequest = new StringRequest(Request.Method.POST, sEnderecoBase, new Response.Listener<String>() {
@Override
public void onResponse(String response) {
PesquisarProdutoResponse sResultado = new Gson().fromJson((String) response, PesquisarProdutoResponse.class);
if (sResultado.getCodigoRetorno() == 0) {
Variaveis.Carrinho.add(sResultado);
try {
sCarrinhoAuxiliar.clear();
for (int i = 0; i < Variaveis.Carrinho.size(); i++) {
PesquisarProdutoObjetoRetorno sItem = Variaveis.Carrinho.get(i).getDadosProduto();
sCarrinhoAuxiliar.add(sItem);
Variaveis.CarrinhoAuxiliar.add(sItem);
}
sAdaptador = new LancarVendaCarrinhoListViewAdapter(getActivity(), sCarrinhoAuxiliar);
sAdaptador.setItemList(sCarrinhoAuxiliar);
fCarrinhoResultado.setAdapter(sAdaptador);
sAdaptador.notifyDataSetChanged();
} catch (Exception e) {
e.printStackTrace();
}
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
byte[] sBytesResposta = error.networkResponse.data;
String sTexto = new String(sBytesResposta);
Mensagem.ExibirAlert(getActivity(), String.valueOf(error.networkResponse.statusCode));
}
}) {
@Override
public Map<String, String> getHeaders() throws AuthFailureError {
Map<String, String> sHeaders = new HashMap<>();
sHeaders.put("Authorization", "Bearer " + Variaveis.ApiToken);
return sHeaders;
}
@Override
public byte[] getBody() throws AuthFailureError {
return new Gson().toJson(sCorpoBusca).getBytes();
}
@Override
public String getBodyContentType() {
return "application/json";
}
};
sQueue.add(sRequest);
}
}
Fragment Layout
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="15dp">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical">
<ListView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/lancarvenda_carrinho_lvwresultado"
android:orientation="vertical" />
</LinearLayout>
Cell layout:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<de.hdodenhof.circleimageview.CircleImageView xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/lancarvenda_carrinho_item_imvFoto"
android:layout_width="80dp"
android:layout_height="80dp"
android:layout_gravity="center_horizontal"
android:background="@drawable/circulo_foto2"
app:border_color="#898989"
app:border_width="2dp" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:layout_marginLeft="10dp">
<TextView
android:id="@+id/lancarvenda_carrinho_item_txtdescricao"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:text="Relogio Mormaii 2730"
android:textSize="17dp"
android:textStyle="bold"
android:layout_marginRight="8dp"
android:lines="2"
android:minLines="2"
android:singleLine="false"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<TextView
android:id="@+id/lancarvenda_carrinho_item_txvpreco"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="8dp"
android:text="R$ 399,89"
android:textColor="#1ba39c"
android:textSize="19dp"
android:layout_marginRight="70dp"/>
<EditText
android:id="@+id/lancarvenda_carrinho_item_etquantidade"
android:layout_width="50dp"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:backgroundTint="#9a9b9c"
android:hint="0"
android:textColor="#2a2d2e"
android:layout_marginRight="8dp"/>
</RelativeLayout>
</LinearLayout>
</LinearLayout>
</LinearLayout>
I have a test populate a public variable on another page and then populate a ListView any in another Activity and it worked, it goes through getView () and shows the ListView correctly but not in the Fragment being populated in the Fragment itself. p>
Any suggestions? I've been searching for a solution for days and nothing ..