ifcursormoveToNext 取出当前记录 int _id=cursorgetIntcursorgetColumnIndexCOL1; 初始化 utem utem=new UserInfo; 本句执行 完后 utem值不等于null 设置属性 utemsetId_id; utemsetUsernamename; utemsetUserpasspass;

This code block is used to retrieve data from a SQLite database using a cursor. If the cursor is able to move to the next record, it means there is data available, and it enters the if statement.

Inside the if statement, it retrieves the value of the first column (COL1) using the getColumnIndex method. This value is assigned to the _id variable.

An instance of the UserInfo class is created and assigned to the utem variable. The id, username, and userpass properties of the utem object are then set using the values obtained from the cursor.

Finally, the utem object is returned, which contains the retrieved data. If there is no data available, the utem object remains null