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Note that there are some explanatory texts on larger screens.

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    <p>This is how you should populate a spinner.</p> <p><a href="http://developer.android.com/guide/topics/ui/controls/spinner.html" rel="nofollow">http://developer.android.com/guide/topics/ui/controls/spinner.html</a></p> <p>But this is how you should do it via code.</p> <pre><code>Spinner spinner = (Spinner) findViewById(R.id.spinner); // Create an ArrayAdapter using the string array and a default spinner layout ArrayAdapter&lt;CharSequence&gt; adapter = ArrayAdapter.createFromResource(this, R.array.planets_array, android.R.layout.simple_spinner_item); // Specify the layout to use when the list of choices appears adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); // Apply the adapter to the spinner spinner.setAdapter(adapter); </code></pre> <p>EDIT: Here is the code for the ActionBar spinner. </p> <pre><code> import android.app.ActionBar; import android.app.Fragment; import android.os.Bundle; import android.support.v4.app.FragmentActivity; import android.view.Gravity; import android.view.LayoutInflater; import android.view.Menu; import android.view.View; import android.view.ViewGroup; import android.widget.ArrayAdapter; import android.widget.TextView; public class MainActivity extends FragmentActivity implements ActionBar.OnNavigationListener { /** * The serialization (saved instance state) Bundle key representing the * current dropdown position. */ private static final String STATE_SELECTED_NAVIGATION_ITEM = "selected_navigation_item"; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); // Set up the action bar to show a dropdown list. final ActionBar actionBar = getActionBar(); actionBar.setDisplayShowTitleEnabled(false); actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_LIST); final String[] dropdownValues = getResources().getStringArray(R.array.dropdown); // Specify a SpinnerAdapter to populate the dropdown list. ArrayAdapter&lt;String&gt; adapter = new ArrayAdapter&lt;String&gt;(actionBar.getThemedContext(), android.R.layout.simple_spinner_item, android.R.id.text1, dropdownValues); adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); // Set up the dropdown list navigation in the action bar. actionBar.setListNavigationCallbacks(adapter, this); // use getActionBar().getThemedContext() to ensure // that the text color is always appropriate for the action bar // background rather than the activity background. } @Override public void onRestoreInstanceState(Bundle savedInstanceState) { // Restore the previously serialized current dropdown position. if (savedInstanceState.containsKey(STATE_SELECTED_NAVIGATION_ITEM)) { getActionBar().setSelectedNavigationItem(savedInstanceState.getInt(STATE_SELECTED_NAVIGATION_ITEM)); } } @Override public void onSaveInstanceState(Bundle outState) { // Serialize the current dropdown position. outState.putInt(STATE_SELECTED_NAVIGATION_ITEM, getActionBar() .getSelectedNavigationIndex()); } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.activity_main, menu); return true; } @Override public boolean onNavigationItemSelected(int position, long id) { // When the given dropdown item is selected, show its contents in the // container view. Fragment fragment = new DummySectionFragment(); Bundle args = new Bundle(); args.putInt(DummySectionFragment.ARG_SECTION_NUMBER, position + 1); fragment.setArguments(args); getFragmentManager().beginTransaction() .replace(R.id.container, fragment).commit(); return true; } /** * A dummy fragment */ public static class DummySectionFragment extends Fragment { public static final String ARG_SECTION_NUMBER = "placeholder_text"; @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { TextView textView = new TextView(getActivity()); textView.setGravity(Gravity.CENTER); textView.setText(Integer.toString(getArguments().getInt(ARG_SECTION_NUMBER))); return textView; } } } </code></pre>
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    1. COThis is works for spinner..But not for Actionbar Spinner or navigationList
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    2. COhttp://developer.android.com/guide/topics/ui/actionbar.html scroll down to Example SpinnerAdapter and OnNavigationListener. Should be good to go :)
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    3. COCheck the edit in my post.
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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