如何从游标获取行ID [英] how to get a row ID from a Cursor

问题描述

如何从游标获取行ID?

How do I get the row ID from a Cursor?

推荐答案

我不认为Cursor直接公开此内容.
SQLiteDatabase.insert()返回新插入的行的行ID.或在Android中，约定是有一个名为"_ id" 的列，其中包含表的主要自动增量键.因此， cursor.getLong(cursor.getColumnIndex("_ id"))会检索到此.

I don't think the Cursor exposes this directly.
SQLiteDatabase.insert() returns the row id of the newly inserted row. Or in Android the convention is that there is a column named "_id" that contains the primary autoincrement key of the table. So cursor.getLong(cursor.getColumnIndex("_id")) would retrieve this.

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