Spinner does not show selected item

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I'm doing a private List states = new ArrayList (); I'm filling it correctly and displays the values in Spinner plus when I select it it changes size as if I had selected plus it does not display the content. Ex: correct would be

spinner="SP"

So it is in my spinner=""

My spinner in xml 

<Spinner
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/spinnersexo_usu"
        android:layout_below="@+id/txtsexo"
        android:layout_alignLeft="@+id/edtnome_usu"/>

My code to add values in spinner 

ArrayAdapter<String> adp= new ArrayAdapter<String>(this,
            android.R.layout.simple_list_item_1,estados);
    adp.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    EstadoUsu.setAdapter(adp);

My class 

 public class Cadastro_Usuario extends Activity {

EditText NomeUsu, FotoUsu, NascimentoUsu, SenhaUsu, TelefoneUsu, CelularUsu, EmailUsu, CepUsu, EnderecoUsu, NumeroUsu, ComplementoUsu, BairroUsu, CidadeUsu;
Spinner SexoUsu, EstadoUsu;

private ProgressDialog pDialog;
private List<String> estados = new ArrayList<String>();
private String estado;

private String tag_json_obj = "jobj_req", tag_json_arry = "jarray_req";
private String TAG = Cadastro_Usuario.class.getSimpleName();


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_cadastro_usuario);

    NomeUsu = (EditText) findViewById(R.id.edtnome_usu);
    SexoUsu = (Spinner) findViewById(R.id.spinnersexo_usu);
    NascimentoUsu = (EditText) findViewById(R.id.edtdata_usu);
    NascimentoUsu.addTextChangedListener(Mask.insert("##/##/####", NascimentoUsu));
    SenhaUsu = (EditText) findViewById(R.id.edtsenha_usu);
    TelefoneUsu = (EditText) findViewById(R.id.edttelefone_usu);
    TelefoneUsu.addTextChangedListener(Mask.insert("(##)####-####", TelefoneUsu));
    CelularUsu = (EditText) findViewById(R.id.edtcelular_usu);
    CelularUsu.addTextChangedListener(Mask.insert("(##)#####-####", CelularUsu));
    EmailUsu = (EditText) findViewById(R.id.edtemail_usu);
    CepUsu = (EditText) findViewById(R.id.edtcep_usu);
    CepUsu.addTextChangedListener(Mask.insert("##.###-####", CepUsu));
    EnderecoUsu = (EditText) findViewById(R.id.edtendereco_usu);
    NumeroUsu = (EditText) findViewById(R.id.edtnumero_usu);
    ComplementoUsu = (EditText) findViewById(R.id.edtcomplemento_usu);
    BairroUsu = (EditText) findViewById(R.id.edtbairro_usu);
    CidadeUsu = (EditText) findViewById(R.id.edtcidade_usu);
    EstadoUsu = (Spinner) findViewById(R.id.spinnerestado_usu);

    pDialog = new ProgressDialog(this);
    pDialog.setMessage("Loading...");
    pDialog.setCancelable(false);

    RetornaJSONEstado();

}

private void RetornaJSONEstado() {
        showProgressDialog();
    JsonArrayRequest req = new JsonArrayRequest(Const.URL_JSON_ARRAY_CAD_USU,
            new Response.Listener<JSONArray>() {
                @Override
                public void onResponse(JSONArray response) {
                    Log.d(TAG, response.toString());
                    hideProgressDialog();

                    int aJsonint = 0;
                    String aJsonString;

                    // Recupera seu adapter
                    ArrayAdapter<String> adp = (ArrayAdapter<String>) EstadoUsu.getAdapter();

                    // Desabilito a notificao por enquanto, ate terminar de adicionar tudo
                    adp.setNotifyOnChange(false);

                    try {
                        JSONArray jsonarray = response;
                        JSONObject jsonobj;

                        for (int i=0; i<jsonarray.length(); i++){
                            jsonobj = jsonarray.getJSONObject(i);

                            aJsonString = jsonobj.getString("sigla");
                            aJsonint = jsonobj.getInt("id");
                            System.out.println("ID " + aJsonint + " sigla  " + aJsonString);
                            // Voce pode adicionar aqui, mas nao eh recomendado
                            //estados.add(aJsonString);

                            // Adiciono direto no ArrayAdapter
                            adp.add(aJsonString);
                        }

                        // Habilitar novamente a notificacao
                        adp.setNotifyOnChange(true);
                        // Notifica o Spinner de que houve mudanca no modelo
                        adp.notifyDataSetChanged();
                    } catch (JSONException e) {
                        e.printStackTrace();
                    }
                }
            },
            new Response.ErrorListener() {
                @Override
                public void onErrorResponse(VolleyError error) {
                    VolleyLog.d(TAG, "Error: " + error.getMessage());

                    System.out.println("Deu ERROR PQP");
                    hideProgressDialog();
                    msgerro();
                    finish();
                }
            }
    );

        // Adding request to request queue
        AppController.getInstance().addToRequestQueue(req,
                tag_json_arry);

    // Cancelling request
    // ApplicationController.getInstance().getRequestQueue().cancelAll(tag_json_arry);


}

private void msgerro(){
    Toast.makeText(this, "Verifique sua conexao com internet e tente novamente", Toast.LENGTH_LONG).show();

}

private void showProgressDialog() {
    if (!pDialog.isShowing())
        pDialog.show();
}

private void hideProgressDialog() {
    if (pDialog.isShowing())
        pDialog.hide();
}
}

My complete layout 

<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
xmlns:android="http://schemas.android.com/apk/res/android"
android:background="@drawable/fundoverde2">


<ScrollView
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:id="@+id/scrollView"
    android:layout_centerHorizontal="true"
    android:layout_alignParentTop="true" >
<RelativeLayout
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="*Nome:"
        android:id="@+id/textView"
        android:layout_alignParentTop="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:layout_marginLeft="10dp"
        android:layout_marginTop="15dp"
        android:textColor="#006600"
        android:textSize="15dp" />

    <EditText
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:inputType="textPersonName"
        android:ems="15"
        android:id="@+id/edtnome_usu"
        android:layout_below="@+id/textView"
        android:layout_alignLeft="@+id/textView"
        android:layout_alignStart="@+id/textView" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="*Sexo:"
        android:layout_marginTop="10dp"
        android:id="@+id/txtsexo"
        android:layout_below="@+id/edtnome_usu"
        android:layout_alignLeft="@+id/edtnome_usu"
        android:layout_alignStart="@+id/edtnome_usu"
        android:textColor="#006600"
        android:textSize="15dp" />

    <Spinner
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:id="@+id/spinnersexo_usu"
        android:layout_below="@+id/txtsexo"
        android:layout_alignLeft="@+id/edtnome_usu"/>

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="*Nascimento:"
        android:layout_marginTop="10dp"
        android:id="@+id/txtData"
        android:layout_below="@+id/spinnersexo_usu"
        android:layout_alignLeft="@+id/edtnome_usu"
        android:layout_alignStart="@+id/edtnome_usu"
        android:entries="@array/array_sexo"
        android:textColor="#006600"
        android:textSize="15dp" />

    <EditText
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:inputType="textPersonName"
        android:ems="10"
        android:id="@+id/edtdata_usu"
        android:layout_below="@+id/txtData"
        android:layout_alignLeft="@+id/textView"
        android:layout_alignStart="@+id/textView" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Telefone Fixo"
        android:layout_marginTop="10dp"
        android:id="@+id/txttelefone"
        android:layout_below="@+id/edtdata_usu"
        android:layout_alignLeft="@+id/edtnome_usu"
        android:layout_alignStart="@+id/edtnome_usu"
        android:textColor="#006600"
        android:textSize="15dp" />

    <EditText
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:inputType="phone"
        android:ems="10"
        android:id="@+id/edttelefone_usu"
        android:layout_below="@+id/txttelefone"
        android:layout_alignLeft="@+id/edtnome_usu" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Celular:"
        android:layout_marginTop="10dp"
        android:id="@+id/txtcelular"
        android:layout_below="@+id/edttelefone_usu"
        android:layout_alignLeft="@+id/edtnome_usu"
        android:layout_alignStart="@+id/edtnome_usu"
        android:textColor="#006600"
        android:textSize="15dp" />

    <EditText
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:inputType="phone"
        android:ems="10"
        android:id="@+id/edtcelular_usu"
        android:layout_below="@+id/txtcelular"
        android:layout_alignLeft="@+id/edtnome_usu" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="*E-mail:"
        android:layout_marginTop="10dp"
        android:id="@+id/txtemail"
        android:layout_below="@+id/edtcelular_usu"
        android:layout_alignLeft="@+id/edtnome_usu"
        android:layout_alignStart="@+id/edtnome_usu"
        android:textColor="#006600"
        android:textSize="15dp" />

    <EditText
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/edtemail_usu"
        android:inputType="textPersonName"
        android:layout_below="@+id/txtemail"
        android:layout_alignLeft="@+id/textView"
        android:layout_alignStart="@+id/textView"
        android:ems="15"
        />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="*Senha:"
        android:layout_marginTop="10dp"
        android:id="@+id/txtsenha"
        android:layout_below="@+id/edtemail_usu"
        android:layout_alignLeft="@+id/edtnome_usu"
        android:layout_alignStart="@+id/edtnome_usu"
        android:textColor="#006600"
        android:textSize="15dp" />

    <EditText
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:inputType="textPassword"
        android:id="@+id/edtsenha_usu"
        android:layout_below="@+id/txtsenha"
        android:layout_alignLeft="@+id/textView"
        android:layout_alignStart="@+id/textView"
        android:ems="10" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="*Estado:"
        android:layout_marginTop="10dp"
        android:id="@+id/txtestado"
        android:layout_below="@+id/edtsenha_usu"
        android:layout_alignLeft="@+id/edtnome_usu"
        android:layout_alignStart="@+id/edtnome_usu"
        android:textColor="#006600"
        android:textSize="15dp" />

    <Spinner
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/spinnerestado_usu"
        android:layout_below="@+id/txtestado"
        android:layout_alignLeft="@+id/edtnome_usu"
        android:layout_alignStart="@+id/edtnome_usu"/>

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="*Cidade:"
        android:layout_marginTop="10dp"
        android:id="@+id/txtcidade"
        android:layout_below="@+id/spinnerestado_usu"
        android:layout_alignLeft="@+id/edtnome_usu"
        android:layout_alignStart="@+id/edtnome_usu"
        android:textColor="#006600"
        android:textSize="15dp" />

    <EditText
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:inputType="textPersonName"
        android:id="@+id/edtcidade_usu"
        android:layout_below="@+id/txtcidade"
        android:layout_alignLeft="@+id/textView"
        android:layout_alignStart="@+id/textView"
        android:ems="10" />


    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="*Endereço:"
        android:layout_marginTop="10dp"
        android:id="@+id/txtRua"
        android:layout_below="@+id/edtcidade_usu"
        android:layout_alignLeft="@+id/edtnome_usu"
        android:layout_alignStart="@+id/edtnome_usu"
        android:textColor="#006600"
        android:textSize="15dp" />


    <EditText
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/edtendereco_usu"
        android:inputType="textPersonName"
        android:layout_below="@+id/txtRua"
        android:layout_alignLeft="@+id/textView"
        android:layout_alignStart="@+id/textView"
        android:layout_alignParentRight="true"
        android:layout_alignParentEnd="true"
        android:layout_marginRight="30dp" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Complemento:"
        android:layout_marginTop="10dp"
        android:id="@+id/txtcomplemento"
        android:layout_below="@+id/edtendereco_usu"
        android:layout_alignLeft="@+id/edtnome_usu"
        android:layout_alignStart="@+id/edtnome_usu"
        android:textColor="#006600"
        android:textSize="15dp" />

    <EditText
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/edtcomplemento_usu"
        android:inputType="textPersonName"
        android:layout_below="@+id/txtcomplemento"
        android:layout_alignLeft="@+id/textView"
        android:layout_alignStart="@+id/textView"
        android:layout_alignParentRight="true"
        android:layout_alignParentEnd="true"
        android:layout_marginRight="30dp" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="*Numero:"
        android:layout_marginTop="10dp"
        android:id="@+id/txtnumero"
        android:layout_below="@+id/edtcomplemento_usu"
        android:layout_alignLeft="@+id/edtnome_usu"
        android:layout_alignStart="@+id/edtnome_usu"
        android:textColor="#006600"
        android:textSize="15dp" />

    <EditText
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:inputType="number"
        android:id="@+id/edtnumero_usu"
        android:layout_below="@+id/txtnumero"
        android:layout_alignLeft="@+id/textView"
        android:layout_alignStart="@+id/textView"
        android:ems="10" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="*Bairro:"
        android:layout_marginTop="10dp"
        android:id="@+id/txtbairro"
        android:layout_below="@+id/edtnumero_usu"
        android:layout_alignLeft="@+id/edtnome_usu"
        android:layout_alignStart="@+id/edtnome_usu"
        android:textColor="#006600"
        android:textSize="15dp" />

    <EditText
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/edtbairro_usu"
        android:inputType="textPersonName"
        android:layout_below="@+id/txtbairro"
        android:layout_alignLeft="@+id/textView"
        android:layout_alignStart="@+id/textView"
        android:ems="10" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="CEP:"
        android:layout_marginTop="10dp"
        android:id="@+id/txtcep"
        android:layout_below="@+id/edtbairro_usu"
        android:layout_alignLeft="@+id/edtnome_usu"
        android:layout_alignStart="@+id/edtnome_usu"
        android:textColor="#006600"
        android:textSize="15dp" />

    <EditText
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/edtcep_usu"
        android:layout_below="@+id/txtcep"
        android:layout_alignLeft="@+id/textView"
        android:layout_alignStart="@+id/textView"
        android:ems="10" />

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="   Salvar   "
        android:id="@+id/btsalvar_tra"
        android:layout_below="@+id/edtcep_usu"
        android:layout_centerHorizontal="true"
        android:onClick="OnCadastroUsuario"
        android:textColor="#FFF"
        android:textStyle="bold"
        android:background="#009900" />

</RelativeLayout>
</ScrollView>

I made the change that indicated and is giving this error 

09-23 11:59:26.348    2211-2211/spac.com.br.jobbroker W/dalvikvm﹕ threadid=1: thread exiting with uncaught exception (group=0x40a13300)
09-23 11:59:26.398    2211-2211/spac.com.br.jobbroker E/AndroidRuntime﹕ FATAL EXCEPTION: main java.lang.NullPointerException
    at spac.com.br.jobbroker.Cadastro.Cadastro_Usuario$1.onResponse(Cadastro_Usuario.java:102)
    at spac.com.br.jobbroker.Cadastro.Cadastro_Usuario$1.onResponse(Cadastro_Usuario.java:89)
    at com.android.volley.toolbox.JsonRequest.deliverResponse(JsonRequest.java:65)
    at com.android.volley.ExecutorDelivery$ResponseDeliveryRunnable.run(ExecutorDelivery.java:99)
    at android.os.Handler.handleCallback(Handler.java:615)
    at android.os.Handler.dispatchMessage(Handler.java:92)
    at android.os.Looper.loop(Looper.java:137)
    at android.app.ActivityThread.main(ActivityThread.java:4745)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:511)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
    at dalvik.system.NativeStart.main(Native Method)
    
asked by anonymous 23.09.2014 / 14:25

1 answer

2

Ah, I got the error.

You forgot to call the notifyDatasetChanged method on your ArrayAdapter . This is necessary because you are adding the direct items in ArrayList estados .

Alternatively you could add directly to ArrayAdapter , but it is recommended to add the entire collection, using addAll (Android version 11+ only), because with each addition it will call notifyDataSetChanged . To add individually you should use setNotifyOnChange(false) , add items using add(String) and then return to normal with setNotifyOnChange(true) and call notifyDataSetChanged .

To do so, you either have to save the reference to the instance you created, or you can pick up from Spinner and notify.

The notifyDataSetChanged notifies the Spinner that the template has changed. With this, it again measures the View that is visible (not that of DropDown ), calling the onMeasure method on Adapter to perform the measurement.

Logo should: 

JsonArrayRequest req = new JsonArrayRequest(Const.URL_JSON_ARRAY_CAD_USU,
    new Response.Listener<JSONArray>() {
        @Override
        public void onResponse(JSONArray response) {
            Log.d(TAG, response.toString());
            hideProgressDialog();

            int aJsonint = 0;
            String aJsonString;

            // Recupera seu adapter
            ArrayAdapter<String> adp = (ArrayAdapter<String>) EstadoUsu.getAdapter();

            // Desabilito a notificao por enquanto, ate terminar de adicionar tudo
            adp.setNotifyOnChange(false);

            try {
                JSONArray jsonarray = response;
                JSONObject jsonobj;

                for (int i=0; i<jsonarray.length(); i++){
                    jsonobj = jsonarray.getJSONObject(i);

                    aJsonString = jsonobj.getString("sigla");
                    aJsonint = jsonobj.getInt("id");
                    System.out.println("ID " + aJsonint + " sigla  " + aJsonString);
                    // Voce pode adicionar aqui, mas nao eh recomendado
                    //estados.add(aJsonString);

                    // Adiciono direto no ArrayAdapter
                    adp.add(aJsonString);
                }

                // Habilitar novamente a notificacao
                adp.setNotifyOnChange(true);
                // Notifica o Spinner de que houve mudanca no modelo
                adp.notifyDataSetChanged();
            } catch (JSONException e) {
                e.printStackTrace();
            }
        }
    },
    new Response.ErrorListener() {
        @Override
        public void onErrorResponse(VolleyError error) {
            VolleyLog.d(TAG, "Error: " + error.getMessage());

            System.out.println("Deu ERROR PQP");
            hideProgressDialog();
            msgerro();
            finish();
        }
    }
);
    
23.09.2014 / 16:19
Make a foreach that does not repeat the same data String with memory garbage