Item chosen in Spinner be a global variable

Question

Good afternoon, everyone ,

I have an Activity that has a Spinner , the value chosen in this Spinner is sent to another Activity in which I do getIntent and receive the value of Spinner , my doubt is, I would like to turn the received Item into a global variable , to use it in any Activity .

Follow the code of my Activitys.

Activity that sends the data :

"Secondactivity"

package br.exemplosqlite;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Spinner;

import org.w3c.dom.Text;

public class SecondActivity extends Activity implements AdapterView.OnItemSelectedListener {



@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_second);

    //referencia a Spinner
    //Spinner coligada;

    //final TextView nome = (TextView)findViewById(R.id.txvNome);
    //final TextView sobrenome = (TextView)findViewById(R.id.txvSobrenome);
    //final Spinner pday = (Spinner)findViewById(R.id.spinner);

    final Spinner spcoligada = (Spinner)findViewById(R.id.coligada);








    //spinner = (Spinner)findViewById(R.id.spinner);

    ArrayAdapter adaptercoligada= ArrayAdapter.createFromResource(this, R.array.coligada, android.R.layout.simple_spinner_item);
    spcoligada.setAdapter(adaptercoligada);



    Button ok = (Button)findViewById(R.id.btnok);







    ok.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            //chamada para a nova Activity
            Intent intent = new Intent(SecondActivity.this, TerceiraActivity.class);
            intent.putExtra("coligada", spcoligada.getSelectedItem().toString());


            //intent.putExtra("nomePessoa", nome.getText().toString());
            //intent.putExtra("sobrenomePessoa", sobrenome.getText().toString());
            //intent.putExtra("day", pday.getSelectedItem().toString());










            startActivity(intent);
        }
    });
}




@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {

}

@Override
public void onNothingSelected(AdapterView<?> parent) {

}
    }

And this is the "Terceiraactivity" that receives the data.

package br.exemplosqlite;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.widget.Spinner;
import android.widget.TextView;

public class TerceiraActivity extends Activity {








@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_terceira);

    Intent intent = getIntent();
    //String parametro = (String) intent.getSerializableExtra("nomePessoa");
    //String psobrenome = (String) intent.getSerializableExtra("sobrenomePessoa");
    //String ppday = (String) intent.getSerializableExtra("day");

    String pcoligada = (String) intent.getSerializableExtra("coligada");











    //TextView nome = (TextView)findViewById(R.id.txvNome);
    //TextView sobrenome = (TextView)findViewById(R.id.txvSobrenome);
    TextView coligadas = (TextView)findViewById(R.id.spvcoligada);







    //nome.setText("Olá " + parametro + ", Tem de fazer a barba " );
    coligadas.setText("coliga escolhida : "+ pcoligada);


}


    }

Answer 1

creates a global variabiel with the same name as the one you receive and, at the time of receiving, uses this.variável... so it becomes global...I don’t know if it will help. ex: declares a variable int i as global in the third Activity and at the time of receiving that value from the second, uses for example this. i = i; (the first i is of the third Activity and the second i is what you received of the second)

Answer 2

I suggest you two choices:

1st Create a class of variables static, so just call the name of the class.variavel, ex:

public class Globais{
    static String coligada;
}

2nd Storing in the memory of the mobile phone, if you want to save this variable even after closing the application, in this case it depends now on what you want to do in your application. For this we use the class SharedPreferences, ex:

Initialize

SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context);

Receive

String storedPreference = preferences.getString("coligada", "valorPorDefeito");

Keep

SharedPreferences.Editor editor = preferences.edit();
editor.putString("coligada", pcoligada); // varivel a guardar
editor.commit();