数据库Log之Couldn't read row 0, col -1 from CursorWindow

今天写代码，日志报出了一个很奇葩的错误。在CursorWindow的信息是Couldn‘t read row 0, col -1

这个错误一般是从sqlite查数据的时候照不到指定的列，或数据类型不匹配。避免这些低级错误最好养成良好的编程习惯，比如写成“cursor.getString(cursor.getColumnIndex("xxx"))”而不是“cursor.getString(3)”。

再有的一点可能是db = dbHelper.getReadableDatabase();而实际上db = dbHelper.getWritableDatabase();

这个错误就是在构造函数db = dbHelper.getWritableDatabase();初始化后，在后面查询数据忘了改过来

数据库Log之Couldn't read row 0, col -1 from CursorWindow

时间： 2024-10-11 13:51:19

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