Question

I have created a spinner with 3 options: Beginner, Advanced and Pro. When one of the options is selected, I want to create a toast and set a double. I need the double to use that value later on, to calculate with 2 other values from an edittext.
For developing purposes I want to set a textview with that value, to check it.
I have tried a few things, but I cant bring it work. The textview keeps displaying 0.0

Hope someone can help me.

My java code:

package tim.steunebrink.tab;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.Spinner;
import android.widget.TextView;
import android.widget.Toast;

public class AlbumsActivity  extends Activity{


private TextView ExpValue;
private double expchosen;

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

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

    Spinner spinner = (Spinner) findViewById(R.id.spinner_experience);
    ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(
            this, R.array.experience_array, android.R.layout.simple_spinner_item);
    adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    spinner.setAdapter(adapter);

    class MyOnItemSelectedListener implements OnItemSelectedListener {

        public void onItemSelected(AdapterView<?> parent,
                View view, int pos, long id) {
            if (pos == 0) {
                // Beginner
                Toast.makeText(parent.getContext(), "Beginner = 0.5", Toast.LENGTH_LONG).show();
                double expchosen = new Double("0.5");

            } else if(pos == 1) {
                // Advanced
                Toast.makeText(parent.getContext(), "Advanced = 1.0", Toast.LENGTH_LONG).show();
                double expchosen = new Double("1.0");

            } else {
                // Pro
                Toast.makeText(parent.getContext(), "Pro = 1.5", Toast.LENGTH_LONG).show();
                double expchosen = new Double("1.5");

            }


            ExpValue.setText(Double.toString(expchosen));

        }

        public void onNothingSelected(AdapterView<?> parent) {
            // Do Nothing
        }
    }

    spinner.setOnItemSelectedListener(new MyOnItemSelectedListener());
}   
}

Answer 1

Make these Changes

class MyOnItemSelectedListener implements OnItemSelectedListener {
        double expchosen ;
        public void onItemSelected(AdapterView<?> parent,
                View view, int pos, long id) {
            if (pos == 0) {
                // Beginner
                Toast.makeText(parent.getContext(), "Beginner = 0.5", Toast.LENGTH_LONG).show();
                expchosen= new Double("0.5");
            } else if(pos == 1) {
                // Advanced
                Toast.makeText(parent.getContext(), "Advanced = 1.0", Toast.LENGTH_LONG).show();
                expchosen = new Double("1.0");
            } else {
                // Pro
                Toast.makeText(parent.getContext(), "Pro = 1.5", Toast.LENGTH_LONG).show();
                expchosen = new Double("1.5");
            }
            ExpValue.setText(Double.toString(expchosen));
        }

        public void onNothingSelected(AdapterView<?> parent) {
            // Do Nothing
        }
    }