src/jp/gr/java_conf/ofnhwx/olib/base/BaseCursorAdapter.java

   1 package jp.gr.java_conf.ofnhwx.olib.base;
   2
   3 import android.content.Context;
   4 import android.database.Cursor;
   5 import android.support.v4.widget.SimpleCursorAdapter;
   6 import android.support.v4.widget.SimpleCursorAdapter.ViewBinder;
   7
   8 /**
   9  * {@link SimpleCursorAdapter}のもと.
  10  * <table>
  11  *  <tr><td>・コンストラクタで{@link #setViewBinder(ViewBinder)}の実行</td></tr>
  12  *  <tr><td>・{@link #swapCursor(Cursor)}で{@link #onSetColumns(Cursor)}を呼出し</td></tr>
  13  * </table>
  14  * @author yuta
  15  */
  16 public abstract class BaseCursorAdapter extends SimpleCursorAdapter implements ViewBinder {
  17
  18     /**
  19      * {@link #swapCursor(Cursor)}から呼出し.項目の列取得などが可能.
  20      * @param c 新しいカーソル.
  21      */
  22     protected abstract void onSetColumns(Cursor c);
  23
  24     public BaseCursorAdapter(Context context, int layout, String[] from, int[] to, int flags) {
  25         super(context, layout, null, from, to, flags);
  26         setViewBinder(this);
  27     }
  28
  29     @Override
  30     public Cursor swapCursor(Cursor c) {
  31         if (c == null) {
  32             return super.swapCursor(c);
  33         } else {
  34             Cursor result = super.swapCursor(c);
  35             onSetColumns(c);
  36             return result;
  37         }
  38     }
  39
  40 }