I have a record in Android but when I hit the "Register Incidence" button, it generates the following error in the logcat:
This is my RegisterIncidences:
btnRegistrar.setOnClickListener(new View.OnClickListener() {
@Ov...
I'm new to this and I do not quite understand the structure of a Servlet, it just seems to consist of 3 methods doGet, doPost and processRequest, no? But at what moment does each one run?
Why do not I see anything in the emulation with this code?
I do not know how and where the TextView must be created to which the text 's' is set. I do not understand how it works, thank you.
public class Cursos extends AppCompatActivity {...
I need help printing on a brother-ql720 label printer from java code using escp mode
I have installed the drivers that come with the printer and also the p-touch software
Since the p-touch software recognizes the paper size and prints with...
I need to obtain the path where the image is saved when the user selects the image, I have this code:
// Llamada al explorador de archivos
public void elegirFoto(View vista){
Intent intent = new Intent(Intent.ACTION_GET_CONTENT, MediaStore...
I have a program that receives a time in this format from a GPS: HHmmss.ss and I save it in a String, I wanted to know some way to print the String with this format: HH: mm: ss. I just need to print the time on the screen
I have this structure in Firebase
And I'm calling the last three data with the name "dose" with this structure
my.child("usuario").orderByKey().limitToLast(3).addValueEventListener(new ValueEventListener() {
@Override...
I need to export a database to a .txt file delimited by commas, I have researched but I can not find the way, I need the files to be shown in this way:
Data, Data, Data
Data, Data, Data
How can I do it?
I try to make a program that converts a decimal number to binary, octal and hexadecimal I made a menu and everything, the binary conversion works but when entering the number in the other conversions, it just does not print anything.
here the p...
Hello everyone, I have the following problem:
At the moment of wanting to show my jasperreport the "PDF", I get the following error java.io.FileNotFoundException when I place the path String path = "prueba.jasper"; or whe...