java - Is there any function in Android to output random stuff from a collection of things in database ? For more details read information given below

Question

I am making an Android app for automatic generation of question paper. In which I've made a database where I've stored questions but I'm facing problem in generating ramdon questions so that questions don't get repeated in the same question paper. Is there any specific function to generate random question from question set?

Answer 1

您可以使用 Random 关键字进行排序和limit所需的记录数。

 Cursor cursor = db.rawQuery("SELECT * FROM " + TABLE_NAME + " ORDER BY RANDOM() LIMIT " + limit, null);
   // use the cursor data

如果您在列表中有数据，请使用以下链接 https://stackoverflow.com/a/4229001/8603832