Add a custom listview in a fragment

I solved the problem, it was something ... insignificant, but at first I was not clear and it is something I never found in videos or tutorials, but it was something logical. The reason why my program "thundered" is because I was trying to put an int in a TextView of the custom ListView, which has a native String format, and did not do the correct assignment of text ... So here I put the as it was at the end of the AdapterHistorial class, since this is the only one that I had to modify:

private class AdaptadorHistorial extends ArrayAdapter<ListaHistorial>{
        ...
        String paraTVCalificacion = String.valueOf(listaCalificaciones.get(position).getCalificacion());
        ...
    }
}

The corrected error is found in the commented part.

You are creating a custom listview, which is why you need your Adapter to inherit from BaseAdapter, I share how you should implement it:

private class AdaptadorHistorial extends BaseAdapter {

    //Propiedades
    ArrayList<ListaHistorial>  listaCalificaciones;
    Context context;
    LayoutInflater inflater;


    //Constructor
    public AdaptadorHistorial(Context context, ArrayList<ListaHistorial> listaCalificaciones) {

        this.listaCalificaciones = listaCalificaciones;
        this.context = context;
        inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

    }

    //Base Adapter

    @Override
    public int getCount() {
        return listaCalificaciones.size();
    }

    @Override
    public Object getItem(int position) {
        return position;
    }

    @Override
    public long getItemId(int i) {
        return 0;
    }


    //Holder para crear View de cada item de la lista

    class Holder {
        //Propiedades
        TextView tv1, tv2, tv3;

    }


    @Override
    public View getView(int position, View view, ViewGroup viewGroup) {

        View rowView = inflater.inflate(R.layout.item_customlistview, null);
        Holder holder = new Holder();

        //Init item_customlistivew
        holder.tv1 =  rowView.findViewById(R.id.tv1);
        holder.tv2 =  rowView.findViewById(R.id.tv2);
        holder.tv3 =  rowView.findViewById(R.id.tv3);

        holder.tv1.setText(listaCalificaciones.get(position).getExamen());
        holder.tv2.setText("" + listaCalificaciones.get(position).getCalificacion());
        holder.tv3.setText(listaCalificaciones.get(position).getFecha());


        return rowView;
    }
}

This is the way it is implemented in your fragment

public class CustomListFragment extends Fragment {

//Propiedades
AdaptadorHistorial adaptadorHistorial;
ArrayList<ListaHistorial> listaCalificaciones;

//View
View rootView;
ListView lvCustom;


@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, Bundle savedInstanceState) {

    rootView = inflater.inflate(R.layout.fragment_customlistview, container, false);
    lvCustom = rootView.findViewById(R.id.lvCustom);

    listaCalificaciones = new ArrayList<>();
    listaCalificaciones.add(new ListaHistorial("Math", 10, "9/1/2017 13:45"));
    listaCalificaciones.add(new ListaHistorial("Math", 8, "7/5/2017 10:50"));
    listaCalificaciones.add(new ListaHistorial("Marh", 4, "7/7/2017 16:30"));
    listaCalificaciones.add(new ListaHistorial("Math", 5, "4/15/2017 15:00"));
    listaCalificaciones.add(new ListaHistorial("Math", 7, "3/10/2017 10:29"));

    adaptadorHistorial = new AdaptadorHistorial(getActivity(), listaCalificaciones);

    lvCustom.setAdapter(adaptadorHistorial);

    return rootView;
}

}

This is how fragment starts from the activity

public class CustomListView extends AppCompatActivity {

//Propiedades
CustomListFragment customListFragment;


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


    //Init fragment
    customListFragment = (CustomListFragment) getFragmentManager().findFragmentById(R.id.fragment_customlistview);


}

}

Finally, your main layout, the fragment, and the item of your CustomListView

activity_custom_list_view.xml

    <?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    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.grupovolada.voladadev.StackOverFlow.CustomListView"
    android:orientation="vertical">

    <fragment
        android:id="@+id/fragment_customlistview"
        android:layout_width="match_parent"
        android:layout_height="match_parent"     class="com.grupovolada.voladadev.StackOverFlow.Fragments.CustomListFragment"></fragment>

</LinearLayout>

fragment_customlistview.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <ListView
        android:id="@+id/lvCustom"
        android:layout_width="match_parent"
        android:layout_height="match_parent"></ListView>

</LinearLayout>

item_customlistview.xml

 <?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">

    <TextView
        android:id="@+id/tv1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:text="" />

    <TextView
        android:id="@+id/tv2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:text="" />

    <TextView
        android:id="@+id/tv3"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:text="" />



</LinearLayout>

I hope this solves your doubt, greetings.

I take this thread because I am doing something very similar, it is also giving me problems and I need help. In my case, the code is as follows:

-fragment_my_stanteria.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MiEstanteria">

<ListView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@android:id/list"
    />

</LinearLayout>

-fila_lista_miestanteria.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">

<ImageView
    android:id="@+id/book_cover_item"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    />

<TextView
    android:id="@+id/book_title_item"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:gravity="center_vertical"
    />

</LinearLayout>

-BookItem.java

package com.example.app_tfg;

import android.graphics.drawable.Drawable;

public class BookItem {
static String title_item;
static Drawable cover_item;

public BookItem(){
    super();
}

public BookItem(String title, Drawable cover){
    super();
    this.title_item = title;
    this.cover_item = cover;
}


public String getTitle() {
    return title_item;
}

public void setTitle(String title){
    this.title_item = title;
}

public static Drawable getCover() {
    return cover_item;
}

public void setCover(Drawable cover) {
    this.cover_item = cover;
}
}

-BookAdapter.java

public class BookAdapter extends BaseAdapter {

ArrayList<BookItem> bookList;
Context context;
LayoutInflater inflater;

public BookAdapter(Context context, ArrayList<BookItem> bookList) {
    this.bookList = bookList;
    this.context = context;
    inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}

@Override
public int getCount() {
    return bookList.size();
}

@Override
public Object getItem(int i) {
    return i;
}

@Override
public long getItemId(int i) {
    return 0;
}

static class BookHolder {
    ImageView cover_item;
    TextView title_item;
}

    @Override
public View getView(int i, View view, ViewGroup viewGroup) {
    View v = inflater.inflate(R.layout.fila_lista_miestanteria, null);
    BookHolder bookHolder = new BookHolder();
    bookHolder.cover_item = (ImageView) v.findViewById(R.id.book_cover_item);
    bookHolder.title_item = (TextView) v.findViewById(R.id.book_title_item);

    bookHolder.title_item.setText(bookList.get(i).getTitle());
    return v;
}
}

Now, my problem comes when I want to put everything together in the Fragment "MiEstanteria". The main problem I have is that I want to fill the Listview with data from a Google Spreadsheets spreadsheet, and I do not know where to make this call.

-MiEstanteria.java

public class MiEstanteria extends ListFragment {
static String read = "si";
ListView bookList;

public MiEstanteria() {
    // Required empty public constructor
}

//Se crea el Fragment
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

}

//Carga layout fragment
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    super.onCreateView(inflater, container, savedInstanceState);
    View view = inflater.inflate(R.layout.fragment_mi_estanteria,container, false);
    bookList = (ListView) view.findViewById(android.R.id.list);
    return view;
}

private void rellenar() {
    Intent intent = new Intent(getActivity(),Spreadsheets.class);
    intent.putExtra(read_only,read);
    startActivity(intent);
}

@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater menuInflater) {

    menuInflater.inflate(R.menu.menu_main, menu);
    super.onCreateOptionsMenu(menu, menuInflater);

    MenuItem item = menu.findItem(R.id.search);
    SearchView searchView = (SearchView) item.getActionView();
    searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
        @Override
        public boolean onQueryTextSubmit(String query) {
            return false;
        }

        @Override
        public boolean onQueryTextChange(String newText) {
            Intent intent1 = new Intent(getActivity(), GetBookInfo.class);
            startActivity(intent1);
            return false;
        }
    });
}

@Override
public boolean onOptionsItemSelected(MenuItem item) {

    switch (item.getItemId()) {

        case R.id.settings:
            Intent intent2 = new Intent(getActivity(), Ajustes.class);
            startActivity(intent2);
            return true;
        case R.id.about:
            Intent intent3 = new Intent(getActivity(), About.class);
            startActivity(intent3);
            return true;
        case R.id.exit:
            new AlertDialog.Builder(getActivity()).setIcon(android.R.drawable.ic_dialog_alert).setTitle("Salir")
                    .setMessage("¿Estás seguro?").setNegativeButton(android.R.string.cancel, null).setPositiveButton(android.R.string.ok, new DialogInterface.OnClickListener() {

                @Override
                public void onClick(DialogInterface dialog, int which) {
                    //finish();
                }
            }).show();
            return true;
        default:
            return super.onOptionsItemSelected(item);
    }
}
}

Could you help me? Thank you very much in advance!