Meu spinner so aparece a seta o que tem de errado no código. no primeiro tem que aparece os estados que esta na string.xml array provincias e o segundo as cidades do estado escolhido que esta na string.xml tambem
Esse e o codigo java
public class PropertyRegisterActivity extends AppCompatActivity implements OnItemSelectedListener{
private Spinner spProvincias;
private Spinner spLocalidades;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_property_register);
this.spProvincias = (Spinner) findViewById(R.id.sp_provincia);
this.spLocalidades = (Spinner) findViewById(R.id.sp_localidad);
loadSpinnerProvincias();
}
private void loadSpinnerProvincias() {
ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(
this, R.array.provincias, R.layout.spinner_item);
adapter.setDropDownViewResource(R.layout.spinner_dropdown_item);
this.spProvincias.setAdapter(adapter);
this.spProvincias.setOnItemSelectedListener( this);
this.spLocalidades.setOnItemSelectedListener(this);
}
@Override
public void onItemSelected(AdapterView<?> parent, View view, int pos,
long id) {
switch (parent.getId()) {
case R.id.sp_provincia:
TypedArray arrayLocalidades = getResources().obtainTypedArray(
R.array.array_provincia_a_localidades);
CharSequence[] localidades = arrayLocalidades.getTextArray(pos);
arrayLocalidades.recycle();
ArrayAdapter<CharSequence> adapter = new ArrayAdapter<CharSequence>(
this, R.layout.spinner_item,
android.R.id.text1, localidades);
adapter.setDropDownViewResource(R.layout.spinner_dropdown_item);
this.spLocalidades.setAdapter(adapter);
break;
case R.id.sp_localidad:
break;
}
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
}
}
Essa e o arquivo xml.
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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"
tools:context="view.PropertyRegisterActivity">
<ImageView
android:id="@+id/imageView5"
android:layout_width="360dp"
android:layout_height="82dp"
android:layout_marginBottom="8dp"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:contentDescription="TODO"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.0"
app:srcCompat="@drawable/ic_cadastrodepropiedade_logo"
tools:ignore="VectorDrawableCompat" />
<TextView
android:id="@+id/textView5"
android:layout_width="wrap_content"
android:layout_height="23dp"
android:layout_marginBottom="8dp"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:text="@string/property_register_description"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.56"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/imageView5"
app:layout_constraintVertical_bias="0.096" />
<EditText
android:id="@+id/editYear"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:ems="10"
android:hint="@string/hint_year"
android:inputType="numberDecimal"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/imageView5"
app:layout_constraintVertical_bias="0.309" />
<EditText
android:id="@+id/editProperty"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:ems="10"
android:hint="@string/hint_property"
android:inputType="textPersonName"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/imageView5"
tools:ignore="MissingConstraints,UnknownId" />
<Button
android:id="@+id/buttonSave"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:background="@drawable/custom_button"
android:text="@string/save"
android:textColor="@color/text_color"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
tools:ignore="UnknownId" />
<Spinner
android:id="@+id/sp_provincia"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:spinnerMode="dropdown"
android:prompt="@string/provincia_prompt"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/imageView5"
app:layout_constraintVertical_bias="0.648" />
<Spinner
android:id="@+id/sp_localidad"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:spinnerMode="dropdown"
android:prompt="@string/localidad_prompt"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="@+id/imageView5"
app:layout_constraintVertical_bias="0.805" />
</android.support.constraint.ConstraintLayout>
Esses sao os layouts para o spinner.
spinner_item.xml
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@android:id/text1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="20sp"
android:textColor="#ff0000" />
spinner_dropdown_item.xml
<?xml version="1.0" encoding="utf-8"?>
<CheckedTextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@android:id/text1"
style="?android:attr/spinnerDropDownItemStyle"
android:singleLine="true"
android:layout_width="match_parent"
android:layout_height="?android:attr/listPreferredItemHeight"
android:ellipsize="marquee"
android:textColor="#aa66cc"/>
E assim que esta não carrega as informações do string.xml.
