Posts by Alisson • 291 points
7 posts
-
3
votes1
answer1115
viewsA: How to print on Android via a bluetooth printer?
Yes, it is possible! I work in a company that has products for mobile devices and in one of them we use bluetooth printing, in a small printer acquired from abroad. The printer came with the SDK…
-
2
votes2
answers726
viewsA: How to use Hashmap in this case?
import java.util.HashMap; import java.util.Scanner; public class Testes { public static void main(String[] args) { Scanner leitor = new Scanner(System.in); …
-
1
votes2
answers2638
views -
0
votes1
answer298
viewsA: Run Splashscreen on android only the first time the user opens the application?
You can save a variable in Sharedpreferences the first time Splash is executed, then check this variable to show or not Splash the next time.
-
1
votes2
answers43
viewsA: Bring select in a row with 2 references
If there is a relationship between the Order table and the Products table, just use the foreign key of this relationship, example: SELECT PEDIDOS.ID, PEDIDOS.ID_PRODUTO1 (SELECT PRODUTOS.PRODUTO…
-
0
votes2
answers177
views -
6
votes2
answers140
viewsA: What are numbers for when creating columns in databases?
In the case of fields of the numeric type int, tinyint, bigint, the number in parentheses means the maximum number of digits. For varchar and char fields, the number indicates the maximum number of…