如果使用 CursorAdapter，如何更新 ListView? [英] How to update ListView in case of CursorAdapter usage?

问题描述

我之所以这么问是因为 requery() 已被弃用.现在刷新 ListView 的最佳方法是什么?

The reason I'm asking that is because requery() is deprecated. What is the best way now to refresh your ListView?

推荐答案

requery() 更新 Cursor，而不是 CursorAdapter.正如你所说，它已被弃用，它的替代品是:

requery() updates a Cursor, not a CursorAdapter. As you say, it has been deprecated, and its replacement is:

oldCursor = myCursorAdapter.swapCursor(newCursor); // hands you back oldCursor

或:

myCursorAdapter.changeCursor(newCursor); // automatically closes old Cursor

myCursorAdapter.notifyDataSetChanged() 通知 ListView 数据集已经改变，它应该自己刷新

myCursorAdapter.notifyDataSetChanged() notifies the ListView that the data set has changed, and it should refresh itself

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