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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical"
    android:padding="16dp">

    <TextView
        android:id="@+id/data_view"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:text="Daftar Barang"
        android:textSize="20dp" />

    <ListView
        android:id="@+id/listview"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="10dp" />
</LinearLayout>

public class TampilDataActivity extends AppCompatActivity {

    ListView listView;

    private DBSource dataSource;

    private ArrayList<Barang> values;


    private Button editButton;
    private Button delButton;

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

        listView = findViewById(R.id.listview);

        dataSource = new DBSource(this);

        dataSource.open();

        // ambil semua data barang
        values = dataSource.getAllBarang();


        // masukkan data barang ke array adapter
        ArrayAdapter<Barang> adapter = new ArrayAdapter<Barang>(this,
                android.R.layout.simple_list_item_1, values);

        listView.setAdapter(adapter);

        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                Barang barang = (Barang) parent.getAdapter().getItem(position);
                switchToGetData(barang.getId());
            }
        });


        listView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
            @Override
            public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long l) {

                final Dialog dialog = new Dialog(TampilDataActivity.this);
                dialog.setContentView(R.layout.dialog_view);
                dialog.setTitle("Pilih Aksi");
                dialog.show();
                final Barang b = (Barang) parent.getAdapter().getItem(position);
                editButton = (Button) dialog.findViewById(R.id.button_edit_data);
                delButton = (Button) dialog.findViewById(R.id.button_delete_data);

                editButton.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View view) {
                        switchToEdit(b.getId());
                        dialog.dismiss();
                    }
                });

                delButton.setOnClickListener(
                        new View.OnClickListener() {
                            @Override
                            public void onClick(View v) {
                                // Delete barang
                                dataSource.deleteBarang(b.getId());
                                dialog.dismiss();
                                finish();
                                startActivity(getIntent());
                            }
                        }
                );

                return true;
            }
        });


    }

    public void switchToEdit(long id) {
        Barang b = dataSource.getBarang(id);
        Intent i = new Intent(this, UbahDataActivity.class);
        Bundle bun = new Bundle();
        bun.putLong("id", b.getId());
        bun.putString("nama", b.getNama_barang());
        bun.putString("merk", b.getMerk_barang());
        bun.putString("harga", b.getHarga_barang());
        i.putExtras(bun);
        finale();
        startActivity(i);
    }

    public void finale() {
        TampilDataActivity.this.finish();
        dataSource.close();
    }

    @Override
    protected void onResume() {
        dataSource.open();
        super.onResume();
    }

    @Override
    protected void onPause() {
        dataSource.close();
        super.onPause();
    }

    public void switchToGetData(long id) {
        Barang b = dataSource.getBarang(id);
        Intent i = new Intent(this, DetailActivity.class);
        Bundle bun = new Bundle();
        bun.putLong("id", b.getId());
        bun.putString("nama", b.getNama_barang());
        bun.putString("merk", b.getMerk_barang());
        bun.putString("harga", b.getHarga_barang());
        i.putExtras(bun);
        dataSource.close();
        startActivity(i);
    }
}

public ArrayList<Barang> getAllBarang() {
    ArrayList<Barang> daftarBarang = new ArrayList<Barang>();

    Cursor cursor = database.query(DBHelper.TABLE_NAME,
            allColumns, null, null, null, null, null);

    cursor.moveToFirst();

    while (!cursor.isAfterLast()) {
        Barang barang = cursorToBarang(cursor);
        daftarBarang.add(barang);
        cursor.moveToNext();
    }
    cursor.close();
    return daftarBarang;
}