Can anyone explain what the error in this code is? I honestly do not understand why I'm getting this error!
Java:
public class Chose_curso extends AppCompatActivity {
private TextView pickLetraText;
private ListView cursoList;
private Spinner letraPicker;
private ArrayList<String> letras = new ArrayList<String>();
private ArrayList<String> cursos = new ArrayList<String>();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_chose_curso);
pickLetraText = (TextView) findViewById(R.id.pickLetraText);
cursoList = (ListView) findViewById(R.id.cursoList);
letraPicker = (Spinner) findViewById(R.id.letraPicker);
letras.add("A");
letras.add("B");
letras.add("C");
letras.add("D");
letras.add("E");
letras.add("F");
letras.add("G");
letras.add("H");
letras.add("I");
letras.add("J");
letras.add("L");
letras.add("M");
letras.add("N");
letras.add("O");
letras.add("P");
letras.add("Q");
letras.add("R");
letras.add("S");
letras.add("T");
letras.add("U");
letras.add("V");
ArrayAdapter<String> adapterLetras = new ArrayAdapter<String>(Chose_curso.this,0,letras);
adapterLetras.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
letraPicker.setAdapter(
new NothingSelectedSpinnerAdapter(
adapterLetras,
R.layout.contact_spinner_row_nothing_selected,
// R.layout.contact_spinner_nothing_selected_dropdown, // Optional
this));
Document document = null;
Thread thread = new Thread(new Runnable() {
@Override
public void run() {
try {
if(letraPicker.getSelectedItem()!=null){
Document document = null;
document = Jsoup.connect("http://www.dges.gov.pt/guias/indcurso.asp?letra="+letraPicker.getSelectedItem().toString()).get();
for(int contador=0;contador<document.select(".lin-area-c2").size();contador++){
cursos.add(document.select(".lin-area-c2").get(contador).text());}}
} catch (Exception e) {
e.printStackTrace();
}
}
});
thread.start();
ArrayAdapter<String> cursosAdapter = new ArrayAdapter<String>(Chose_curso.this,0,cursos);
cursoList.setAdapter(cursosAdapter);
}
}
XML:
<?xml version="1.0" encoding="utf-8"?>
<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"
tools:context="com.pedrogouveia.averagemaker.Chose_curso"
android:background="@color/Cyan">
<TextView
android:id="@+id/pickLetraText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="25dp"
android:layout_marginTop="39dp"
android:text="Escolha a letra inicial do seu curso :"
android:textColor="@color/white"
android:textSize="@dimen/_14sdp"
android:layout_alignParentTop="true"
android:layout_alignParentStart="true" />
<Spinner
android:id="@+id/letraPicker"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="@+id/pickLetraText"
android:layout_alignParentEnd="true"
android:layout_marginEnd="17dp"
android:layout_alignTop="@+id/pickLetraText"
android:scaleX="0.75"
android:scaleY="0.75"/>
<ListView
android:id="@+id/cursoList"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentStart="true"
android:layout_below="@+id/pickLetraText"
android:layout_marginTop="54dp" />
Error:
FATAL EXCEPTION: main
Process: com.pedrogouveia.averagemaker, PID: 4397
android.content.res.Resources$NotFoundException: Resource ID #0x0
at android.content.res.ResourcesImpl.getValue(ResourcesImpl.java:194)
at android.content.res.Resources.loadXmlResourceParser(Resources.java:2131)
at android.content.res.Resources.getLayout(Resources.java:1142)
at android.view.LayoutInflater.inflate(LayoutInflater.java:424)
at android.widget.ArrayAdapter.createViewFromResource(ArrayAdapter.java:416)
at android.widget.ArrayAdapter.getView(ArrayAdapter.java:407)
at com.pedrogouveia.averagemaker.NothingSelectedSpinnerAdapter.getView(NothingSelectedSpinnerAdapter.java:66)
at android.widget.Spinner.measureContentWidth(Spinner.java:856)
at android.widget.Spinner.onMeasure(Spinner.java:606)
at android.support.v7.widget.AppCompatSpinner.onMeasure(AppCompatSpinner.java:416)
at android.view.View.measure(View.java:21783)
at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:715)
at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:461)
at android.view.View.measure(View.java:21783)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6549)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
at android.support.v7.widget.ContentFrameLayout.onMeasure(ContentFrameLayout.java:139)
at android.view.View.measure(View.java:21783)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6549)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1514)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:806)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:685)
at android.view.View.measure(View.java:21783)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6549)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
at android.view.View.measure(View.java:21783)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6549)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1514)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:806)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:685)
at android.view.View.measure(View.java:21783)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6549)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:185)
at com.android.internal.policy.DecorView.onMeasure(DecorView.java:699)
at android.view.View.measure(View.java:21783)
at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:2409)
at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1497)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1750)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1385)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6722)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:886)
at android.view.Choreographer.doCallbacks(Choreographer.java:698)
at android.view.Choreographer.doFrame(Choreographer.java:633)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:872)
at android.os.Handler.handleCallback(Handler.java:769)
at android.os.Handler.dispatchMessage(Handler.java:98)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6540)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767)