android.database.CursorIndexOutOfBoundsException: Index -1 requested, with a size of 3

       今天在写一个小项目的数据库部分的功能时，出现了一个这样的问题：java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=99, result=-1, data=Intent { (has extras) }} to activity {com.xxx.xxx/com.xxx.xxx.activity.XXXXActivity}: android.database.CursorIndexOutOfBoundsException: Index -1 requested, with a size of 3java.lang