Android编程使用ListView实现数据列表显示的方法

2019-12-10 19:31:13于丽

使用SimpleAdapter进行数据绑定

public class MainActivity extends Activity {
  private PersonService service;
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    service = new PersonService(this);
    ListView listView = (ListView) this.findViewById(R.id.listView);
    //获取到集合数据
    List<Person> persons = service.getScrollData(0, 10);
    List<HashMap<String, Object>> data = new ArrayList<HashMap<String,Object>>();
    for(Person person : persons){
      HashMap<String, Object> item = new HashMap<String, Object>();
      item.put("id", person.getId());
      item.put("name", person.getName());
      item.put("phone", person.getPhone());
      item.put("amount", person.getAmount());
      data.add(item);
    }
    //创建SimpleAdapter适配器将数据绑定到item显示控件上
    SimpleAdapter adapter = new SimpleAdapter(this, data, R.layout.item,
        new String[]{"name", "phone", "amount"}, new int[]{R.id.name, R.id.phone, R.id.amount});
    //实现列表的显示
    listView.setAdapter(adapter);
    //条目点击事件
    listView.setOnItemClickListener(new ItemClickListener());
  }
    //获取点击事件
  private final class ItemClickListener implements OnItemClickListener{
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
      ListView listView = (ListView) parent;
      HashMap<String, Object> data = (HashMap<String, Object>) listView.getItemAtPosition(position);
      String personid = data.get("id").toString();
      Toast.makeText(getApplicationContext(), personid, 1).show();
    }
  }
}

使用SimpleCursorAdapter进行数据绑定

public class MainActivity extends Activity {
  private PersonService service;
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    service = new PersonService(this);
    ListView listView = (ListView) this.findViewById(R.id.listView);
    //获取游标
    Cursor cursor = service.getCursorScrollData(0, 10);
    //创建SimpleCursorAdapter适配器将数据绑定到item显示控件上
    SimpleCursorAdapter adapter = new SimpleCursorAdapter(this, R.layout.item, cursor,
        new String[]{"name", "phone", "amount"}, new int[]{R.id.name, R.id.phone, R.id.amount});
    listView.setAdapter(adapter);
    //条目点击事件
    listView.setOnItemClickListener(new ItemClickListener());
  }
  private final class ItemClickListener implements OnItemClickListener{
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
      ListView listView = (ListView) parent;
      Cursor cursor = (Cursor) listView.getItemAtPosition(position);
      String personid = String.valueOf(cursor.getInt(cursor.getColumnIndex("_id")));
      Toast.makeText(getApplicationContext(), personid, 1).show();
    }
  }
}