如何检查行，如果它是0或1在Sqlite中

Question

我有一行命名为例如管理员 我如何工作，例如，如果数字0做某事，反之亦然？

这是我的经验，但它不工作

con_db connect = new con_db(Main2Activity.this); 
SQLiteDatabase read = connect.getReadableDatabase(); 
Cursor saved = read.rawQuery("select * from show where administrator=0 or administrator=1",null); 
if(saved.getCount() == 0) 
Toast.makeText(this, "0", Toast.LENGTH_SHORT).show(); 
if(saved.getCount() == 1) 
Toast.makeText(this, "1", Toast.LENGTH_SHORT).show(); 

Answer 1

getCount将（）光标返回行的数量。 试试这个：

Cursor saved = read.rawQuery("select * from show",null); 
if(cursor.getCount() == 0){ 
    Toast.makeText(this, "Table is empty", Toast.LENGTH_SHORT).show(); 
    return; 
} 
while (saved.moveToNext()) { 
    int admin = saved.getInt(saved.getColumnIndex("administrator")); 
    if(admin == 0){ 
     Toast.makeText(this, "0", Toast.LENGTH_SHORT).show(); 
    }else if(admin == 1){ 
     Toast.makeText(this, "1", Toast.LENGTH_SHORT).show(); 
    } 
} 
saved.close()