Cursor.getType() API < 11期

Question

我正在遵循@JuanSánchez建议的answer，但我遇到了一个问题。

当尝试将ClassCastException对象(c)转换为CursorWrapper时，我的问题是一个CursorWrapper。更具体地说，代码行与CursorWrapper cw = (CursorWrapper)c;一样。

        CursorWindow cursorWindow = null;
        int cursorPosition = 0;
        if (android.os.Build.VERSION.SDK_INT < 11) {
            CursorWrapper cw = (CursorWrapper)c;
            Class<?> cursorWrapper = CursorWrapper.class;
            Field mCursor = null;
            try {
                mCursor = cursorWrapper.getDeclaredField("mCursor");
                mCursor.setAccessible(true);
                AbstractWindowedCursor abstractWindowedCursor = (AbstractWindowedCursor)mCursor.get(cw);
                cursorWindow = abstractWindowedCursor.getWindow();
                cursorPosition = abstractWindowedCursor.getPosition();
            } catch (NoSuchFieldException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (IllegalArgumentException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (IllegalAccessException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }

        }

任何帮助我都会非常感激。

Answer 1

算出来了。超级简单。

换掉下面的行。

交换 CursorWrapper cw = (CursorWrapper)cursor;

For CursorWrapper cw = new CursorWrapper(cursor);