Android 如何在使用onListItemClick启动新活动时收集对象信息

我有一个事件处理程序：

@Override
        protected void onListItemClick(ListView l, View v, int position, long id) {
         // TODO Auto-generated method stub
         //super.onListItemClick(l, v, position, id);
         String selection = l.getItemAtPosition(position).toString();

         Intent myIntent = new Intent(MainActivity.this, sondaggioActivity.class);
         MainActivity.this.startActivity(myIntent);
         //Toast.makeText(this, selection, Toast.LENGTH_LONG).show();
        }

单击的项目是以下内容的列表视图：

public class categorie {
      private long id;
      private String nome;
      private long preferita;

      public long getId() {
        return id;
      }

      public void setId(long id) {
        this.id = id;
      }

      public String getNome() {
        return nome;
      }

      public void setNome(String nome) {
        this.nome = nome;
      }



      public long getPreferita() {
        return preferita;
    }

    public void setPreferita(long preferita) {
        this.preferita = preferita;
    }

    // Will be used by the ArrayAdapter in the ListView
      @Override
      public String toString() {
        return nome;
      }
    } 

我按以下方式列出：

datasource = new pollDataSource(this);
        datasource.open();

        Cursor values = datasource.getAllCategorie();

        String[] categorieColumns =
            {
                MySQLiteHelper.COLUMN_NOME   // Contract class constant containing the word column name

            };


            int[] mWordListItems = { R.id.categoria_label };


        SimpleCursorAdapter adapter = new SimpleCursorAdapter(
                getApplicationContext(),               // The application's Context object
                R.layout.single_list_item,             // A layout in XML for one row in the ListView
                values,                                // The result from the query
                categorieColumns,                      // A string array of column names in the cursor
                mWordListItems,                        // An integer array of view IDs in the row layout
                0);                                    // Flags (usually none are needed)


        setListAdapter(adapter);

---

在新的活动中，我想收集数据库中给定类别（我单击的类别）中的一些“问题”。。。如何将单击的类别传递给新活动？

您知道意图吗？您可以在开始下一个活动的意图中添加简单的原语、字符串等。它与键值关系一起工作，如

HashMap

。这里有一个简单的例子

@Override
protected void onListItemClick(ListView l, View v, int position, long id) {
    int selection = position;
    Intent myIntent = new Intent(MainActivity.this, sondaggioActivity.class);
    myIntent.putExtra("SELECTION", selection); // <--- put the value (KEY, VALUE)
    MainActivity.this.startActivity(myIntent);
}

@覆盖
受保护的void onListItemClick（列表视图l、视图v、整数位置、长id）{
int选择=位置；
Intent myIntent=新的Intent（MainActivity.this，sondaggioActivity.class）；
myIntent.putExtra（“选择”，选择）；//您可能想要：

Cursor data = (Cursor)l.getItemAtPosition(position);
String cat = data.getString(cursor.getIndexColumn(MySQLiteHelper.COLUMN_NOME));
Intent myIntent = new Intent(MainActivity.this, sondaggioActivity.class);
myIntent.putExtra("categorieName", cat);
MainActivity.this.startActivity(myIntent);

然后在
SONDAGIOActivity
活动中，您可以使用
getIntent（）
获取启动活动的
Intent
，并检索分类名称。
是光标=光标？还是光标是其他东西？
Cursor data = (Cursor)l.getItemAtPosition(position);
String cat = data.getString(cursor.getIndexColumn(MySQLiteHelper.COLUMN_NOME));
Intent myIntent = new Intent(MainActivity.this, sondaggioActivity.class);
myIntent.putExtra("categorieName", cat);
MainActivity.this.startActivity(myIntent);