如何使用自定義適配器填充ListView？列表視圖空（

Question

我有自定義適配器列表視圖PROGRAMM工作沒有錯誤回報，但列表視圖是空

我的適配器看起來象是：。

public class CustomAdapter extends BaseAdapter implements Filterable { 

private ArrayList<OItem> _data; 
Context _c; 

public CustomAdapter(ArrayList<OItem> data, Context c) { 
    _data = data; 
    _c = c; 
} 

public View getView(int position, View convertView, ViewGroup parent) { 
    View v = convertView; 
    if (v == null) 
    { 
     LayoutInflater vi = (LayoutInflater)_c.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
     v = vi.inflate(R.layout.item, null); 
    } 

    OItem oItem = _data.get(position); 

    TextView tvId = (TextView)v.findViewById(R.id.id); 
    TextView tvName = (TextView)v.findViewById(R.id.name); 
    TextView tvBatch = (TextView)v.findViewById(R.id.batch); 

    tvId.setText(oItem.getId()); 
    tvName.setText(oItem.getName()); 
    tvBatch.setText(oItem.getBatch()); 

    return v; 
} 
} 

在活動時間：

ArrayList<OItem> arrItems = new ArrayList<OItem>(); 
.... 
here I fill arrItens with the data 
.... 
ListView lvSimple = (ListView) findViewById(R.id.lvContent); 
lvSimple.setAdapter(new CustomAdapter(arrItems, this)); 

可能是什麼問題？ 也許應該在getView方法中加入適配器？

謝謝

Answer 1

我想你還沒有實現getCount將在您的CustomAdapter

public int getCount() { 
    return null == _data ? 0 : _data.size(); 
}