mSpnImageSize = (Spinner) findViewById(R.id.spnImageSize);

package com.laurengariepy.android.gridimagesearch;

import android.R;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.text.Selection;
import android.view.Menu;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Spinner;

public class FilterActivity extends ActionBarActivity {

    protected static final String FILTERS = "FilterPreferences";

    private Spinner  mSpnImageSize,
                     mSpnColorFilter,
                     mSpnImageType;
    private EditText mEtSiteFilter;
    private Button   mBtnSave;

    private ArrayAdapter<CharSequence> aImageSizeAdapter,
                                       aColorFilterAdapter,
                                       aImageTypeAdapter;

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

        setupViews();
        restoreFilterPreferences();
        setCursor();
    }

    private void setupViews() {
        mSpnImageSize = (Spinner) findViewById(R.id.spnImageSize);
        aImageSizeAdapter = ArrayAdapter.createFromResource(this, R.array.image_size_options,
                android.R.layout.simple_spinner_item);
        aImageSizeAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        mSpnImageSize.setAdapter(aImageSizeAdapter);

        mSpnColorFilter = (Spinner) findViewById(R.id.spnColorFilter);
        aColorFilterAdapter = ArrayAdapter.createFromResource(this, R.array.color_filter_options,
                android.R.layout.simple_spinner_item);
        aColorFilterAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        mSpnColorFilter.setAdapter(aColorFilterAdapter);

        mSpnImageType = (Spinner) findViewById(R.id.spnImageType);
        aImageTypeAdapter = ArrayAdapter.createFromResource(this, R.array.image_type_options,
                android.R.layout.simple_spinner_item);
        aImageTypeAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        mSpnImageType.setAdapter(aImageTypeAdapter);

        mEtSiteFilter = (EditText) findViewById(R.id.etSiteFilter);

        mBtnSave = (Button) findViewById(R.id.btnSave);
        mBtnSave.setOnClickListener( new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent i = new Intent();
                setResult(RESULT_OK, i);
                finish();
            }
        });
    }

    private void restoreFilterPreferences() {
        SharedPreferences filters = getSharedPreferences(FILTERS, 0);

        int imageSizeSelection = filters.getInt("image_size", 0);
        mSpnImageSize.setSelection(imageSizeSelection);

        int colorFilterSelection = filters.getInt("color_filter", 0);
        mSpnColorFilter.setSelection(colorFilterSelection);

        int imageTypeSelection = filters.getInt("image_type", 0);
        mSpnImageType.setSelection(imageTypeSelection);

        String siteFilterSelection = filters.getString("site_filter", mEtSiteFilter.getHint().toString());
        mEtSiteFilter.setText(siteFilterSelection);
    }

    private void setCursor() {
        int position = mEtSiteFilter.length();
        Selection.setSelection(mEtSiteFilter.getText(), position);
    }

    @Override
    protected void onPause() {
        super.onPause();
        saveFilterPreferences();
    }

    private void saveFilterPreferences() {
        SharedPreferences filters = getSharedPreferences(FILTERS, 0);
        SharedPreferences.Editor editor = filters.edit();
        editor.putInt("image_size", mSpnImageSize.getSelectedItemPosition());
        editor.putInt("color_filter", mSpnColorFilter.getSelectedItemPosition());
        editor.putInt("image_type", mSpnImageType.getSelectedItemPosition());
        editor.putString("site_filter", mEtSiteFilter.getText().toString());
        editor.commit();
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.filter, menu);
        return true;
    }

}

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/container"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <TextView
        android:id="@+id/tvFilterHeader"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:layout_margin="10dp"
        android:textStyle="bold"
        android:textSize="22sp"
        android:text="@string/tv_filter_header" />

    <TextView
        android:id="@+id/tvImageSize"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_below="@+id/tvFilterHeader"
        android:layout_margin="10dp"
        android:textSize="18sp"
        android:text="@string/tv_image_size" />

     <Spinner
        android:id="@+id/spnImageSize"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:layout_alignBottom="@+id/tvImageSize"
        android:layout_toRightOf="@+id/tvImageSize"
        android:textSize="18sp"
        android:spinnerMode="dropdown" />

    <TextView
        android:id="@+id/tvColorFilter"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_below="@+id/tvImageSize"
        android:layout_margin="10dp"
        android:textSize="18sp"
        android:text="@string/tv_color_filter" />

    <Spinner
        android:id="@+id/spnColorFilter"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:layout_alignBottom="@+id/tvColorFilter"
        android:layout_toRightOf="@+id/tvColorFilter"
        android:textSize="18sp"
        android:spinnerMode="dropdown" />

    <TextView
        android:id="@+id/tvImageType"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_below="@+id/tvColorFilter"
        android:layout_margin="10dp"
        android:textSize="18sp"
        android:text="@string/tv_image_type" />

    <Spinner
        android:id="@+id/spnImageType"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:layout_alignBottom="@+id/tvImageType"
        android:layout_toRightOf="@+id/tvImageType"
        android:textSize="18sp"
        android:spinnerMode="dropdown" />

    <TextView
        android:id="@+id/tvSiteFilter"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_below="@+id/tvImageType"
        android:layout_margin="10dp"
        android:textSize="18sp"
        android:text="@string/tv_site_filter" />

    <EditText
        android:id="@+id/etSiteFilter"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBottom="@+id/tvSiteFilter"
        android:layout_toRightOf="@+id/tvSiteFilter"
        android:ems="10"
        android:hint="@string/et_filter_hint" >

        <requestFocus />
    </EditText>

    <Button
        android:id="@+id/btnSave"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/tvSiteFilter"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="36dp"
        android:text="@string/btn_save" />

</RelativeLayout>

import android.R;

import com.laurengariepy.android.gridimagesearch.R;
// your packagename.R