我在以下查询中得到“索引1处的绑定值为空”:
public String searchForWifiSSID(String one, String two){
c = db.query(Constants.TABLE_NAME, new String[]{Constants.PARAM1, Constants.PARAM2}, Constants.PARAM1 + " =? " +" AND " + Constants.PARAM2 + " =? ", new String[]{one,two}, null, null, null);
}
我对selectionArgs的语法是否不正确?这样做是不正确的:
public String searchForWifiSSID(String one, String two){
c = db.query(Constants.TABLE_NAME, new String[]{Constants.PARAM1, Constants.PARAM2}, Constants.PARAM1 + " = " + one +" AND " + Constants.PARAM2 + " = " + two, null, null, null, null);
}
答案 0 :(得分:6)
确保值“one”和“two”不为NULL。我相信错误意味着其中一个值为空。