Send variable between classes via Intent

Question

I'm having trouble using Intent to navigate screens. I want to send a variable and use it in another class.

I use a method, the method accepts a variable, but I don’t know how to send it with the intention to a new screen, which will use it to perform some actions.

The main class calls the method:

private void pantallaDetalles(final int identificador)
{
     startActivityForResult(new Intent(this,MostrarDetalles.class),REQST_CODE);
}

MostrarDetalles.class is * .java that will take a variable. I start like this:

public class MostrarDetalles extends Activity {

    SQLiteDatabase db;

    public void onCreate(Bundle savedInstanceState)
        {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.detalles);


         //more code...


         Cursor c = db.rawQuery("SELECT * FROM table WHERE _id="+ identificador, null);

        }

You saw? I talk about it. I do not know how to send the variable "identificador" from the main class to the second class through Intent.

Can you help me? Thank you so much for the advice.

JMasia.

Answer 1

.

Intent i = new Intent(...);
i.putExtra("name_of_extra", myObject);

on onCreate:

getIntent.getIntExtra("name_of_extra", -1);

Answer 2

1:

Intent i=new Intent("com.suatatan.app.Result");
                i.putExtra("VAR_RESULT", "Added !");
                startActivity(i);

2: ():

TextView tv_sonuc = (TextView) findViewById(R.id.tv_sonuc);

Bundle bundle = getIntent().getExtras();

String var_from_prev_intent = bundle.getString("VAR_RESULT");
tv_sonuc.setText(var_from_prev_intent);

Answer 3

You can use Intent.putExtra()to bind the data you want to send with intent.