Question

我有这个SQL查询：

$sql1="SELECT articoli.sconto_st as promozione,  marche.ID,marche.marca, categorie.ID,articoli.marche_ID,articoli.categorie_ID,categorie.categoria
FROM articoli,categorie, marche
AND articoli.categorie_ID=categorie.ID
AND articoli.marche_ID=marche.ID
AND marca='$marcavalue'
AND categoria='$categoriavalue'
  ";
$result1=mysqli_query($con,$sql1);

我想输出一些数据：

<?php
    while($row1=mysqli_fetch_array($result1)) {
        echo "<tr>";
        echo '<td class="tab1"><b>'. $row1["marca"]  . '<b> '. $row1["promozione"].'</b>  </br></td>'; //scala
        echo "</tr>";

我想选择上面查询中的所有数据，但是只有当它是1时才输出promozione。所以要选择其他数据，但只有当它是1时，才会输出promozione。不同于1只输出马卡。有没有办法做到这一点？

Answer 1

public class ExpandableList extends AppCompatActivity {
private static final String Shared = null;

ExpandableListView expandableListView;
ExpandableListAdapter expandableListAdapter;
String expandableListTitle;
ArrayList<String> expandableListDetail;


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


    expandableListDetail = getIntent().getStringArrayListExtra("Options");

    expandableListTitle = getIntent().getStringExtra("Heading");


    expandableListAdapter = new CustomExpandableListAdapter(this, expandableListTitle, expandableListDetail);


    expandableListView.setAdapter(expandableListAdapter);
    expandableListView.setOnGroupExpandListener(new ExpandableListView.OnGroupExpandListener() {

        @Override
        public void onGroupExpand(int groupPosition) {

            Toast.makeText(getApplicationContext(),
                    expandableListTitle + " List Expanded.",
                    Toast.LENGTH_SHORT).show();
        }
    });

    expandableListView.setOnGroupCollapseListener(new ExpandableListView.OnGroupCollapseListener() {

        @Override
        public void onGroupCollapse(int groupPosition) {
            Toast.makeText(getApplicationContext(),
                    expandableListTitle + " List Collapsed.",
                    Toast.LENGTH_SHORT).show();

        }
    });

    expandableListView.setOnChildClickListener(new ExpandableListView.OnChildClickListener() {
        @Override
        public boolean onChildClick(ExpandableListView parent, View v,
                                    int groupPosition, int childPosition, long id) {
            Toast.makeText(
                    getApplicationContext(),
                    expandableListTitle
                            + " -> "
                            + expandableListDetail/*.get(
                            expandableListTitle.get(groupPosition)).get(
                            childPosition)*/, Toast.LENGTH_SHORT
            ).show();
            return false;
        }
    });
}}

这一行，我补充说：<?php while($row1=mysqli_fetch_array($result1)) { $promozione= ($row1['promozione'] == 1) ?1 :""; echo "<tr>"; echo '<td class="tab1"><b>'. $row1["marca"] . '<b> '. $promozione.'</b> </br></td>'; //scala echo "</tr>"; 是简称：

$promosione = ($row1['promozione'] == 1) ?1 :"";

我希望这能解决你的问题。

如何进行动态选择？

1 个答案: