Android Spinner: onItemSelected listener not called when selecting the same item

Question

I have a requirement to show AlertDialogwhen selecting the second item in Spinner. I know that using onItemSelected, we can listen to the spinner selection and show a popup. The problem is that when I select the second element, a dialog box appears, but after closing the dialog box, and then we select the same element, it does not display the dialog box because onItemSelectedit will not be called. Is there a workaround for this? Without using a custom implementation Spinner.

Answer 1

Create your own counter

import android.content.Context;
import android.util.AttributeSet;
import android.view.View;
import android.widget.AdapterView;
import android.widget.Spinner;

public class CustomSpinner extends Spinner {
    OnItemSelectedListener listener;
    private AdapterView<?> lastParent;
    private View lastView;
    private long lastId;

    public CustomSpinner(Context context, AttributeSet attrs) {
        super(context, attrs);
        // TODO Auto-generated constructor stub
        initlistner();
    }

    @Override
    public void setSelection(int position) {
        if (position == getSelectedItemPosition() && listener != null) {
            listener.onItemSelected(lastParent, lastView, position, lastId);
        } else {
            super.setSelection(position);
        }

    }

    private void initlistner() {
        // TODO Auto-generated method stub
        super.setOnItemSelectedListener(new OnItemSelectedListener() {

            @Override
            public void onItemSelected(AdapterView<?> parent, View view,
                    int position, long id) {
                // TODO Auto-generated method stub
                lastParent = parent;
                lastView = view;
                lastId = id;
                if (listener != null) {
                    listener.onItemSelected(parent, view, position, id);
                }
            }

            @Override
            public void onNothingSelected(AdapterView<?> parent) {
                // TODO Auto-generated method stub
                if (listener != null) {
                    listener.onNothingSelected(parent);
                }
            }
        });

    }

    public void setOnItemSelectedEvenIfUnchangedListener(
            OnItemSelectedListener listener) {
        this.listener = listener;
    }

}

private OnItemSelectedListener listener;

listener = new OnItemSelectedListener() {

        @Override
        public void onItemSelected(AdapterView<?> arg0, View arg1,
                int arg2, long arg3) {}

        @Override
        public void onNothingSelected(AdapterView<?> arg0) {
            // TODO Auto-generated method stub

        }
    };

-

cusSpinner.setOnItemSelectedEvenIfUnchangedListener(listener);

Answer 2

:

spinner.setOnItemSelectedListener(this);

@Override
public void onItemSelected(AdapterView<?> arg0, View arg1, int arg2, long arg3) 
{
     switch(arg2)
     {
          case 0:
          {
               Dialog dialog = new Dialog(getApplicationContext());
               .......
               dialog.show();
               spinner.setSelection(0);
          }
          break;
     }
[...]