sqlite保存viewpageradapter

[judemingzi]

我重写了viewpageradapter，现在用一个sqlite保存它。但是在activity中应该怎么应用，我运行就报错。

public ViewPagerAdapter query() {
		ViewPagerAdapter viewPagerAdapter = new ViewPagerAdapter(null, null);
		Cursor c = queryTheCursor();
		if (c != null) {
			while (c.moveToNext()) {
				byte data[] = c.getBlob(c.getColumnIndex("adapter_data"));
				ByteArrayInputStream arrayInputStream = new ByteArrayInputStream(
						data);
				try {
					ObjectInputStream inputStream = new ObjectInputStream(
							arrayInputStream);
					viewPagerAdapter = (ViewPagerAdapter) inputStream
							.readObject();
					inputStream.close();
					arrayInputStream.close();
				} catch (Exception e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}

			}
		}
		c.close();
		return viewPagerAdapter;
	}

这是我返回viewpageradapter的方法

public void add(ViewPagerAdapter viewPagerAdapter) {

		ByteArrayOutputStream arrayOutputStream = new ByteArrayOutputStream();
		try {
			ObjectOutputStream objectOutputStream = new ObjectOutputStream(
					arrayOutputStream);
			objectOutputStream.writeObject(viewPagerAdapter);
			objectOutputStream.flush();
			byte data[] = arrayOutputStream.toByteArray();
			objectOutputStream.close();
			arrayOutputStream.close();
			//
			db.execSQL("INSERT INTO adapter VALUES(null, ?)",
					new Object[] { data });
			db.setTransactionSuccessful(); // 设置事务成功完成
			db.close();
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

这是我保存viewpageradapter的方法。
在activity中我应该怎么用，直接在oncreate中覆盖adapter会报错。onresume中也不行。

[Hcwfc]

最好的办法是贴出来logcat