Freaky Dug Freaky Dug - 1 year ago 73
Android Question

Skip the headers in PreferenceActivity when there's only one header

I added preference-headers to my app so that the preference screen would not look broken on Honeycomb and tablet sized ICS. However, I only have one header at the moment so you have to click through a header screen with only one entry on phone sized devices. Is there an easy way to tell android to skip the header screen when there's only one header, but to still show it on large screens?

It seems that the stock Contacts app does this successfully but I've browsed through its source and can't figure out how it is doing it.

Answer Source

You can skip the headers by setting one of your PreferenceFragments as default.

When you take a look at the source, you will find these two extras:

 * When starting this activity, the invoking Intent can contain this extra
 * string to specify which fragment should be initially displayed.
public static final String EXTRA_SHOW_FRAGMENT = ":android:show_fragment";

 * When starting this activity, the invoking Intent can contain this extra
 * boolean that the header list should not be displayed.  This is most often
 * used in conjunction with {@link #EXTRA_SHOW_FRAGMENT} to launch
 * the activity to display a specific fragment that the user has navigated
 * to.
public static final String EXTRA_NO_HEADERS = ":android:no_headers";

Now simply add these two extras to the intent which is invoking your PrefenceActivity and specify the PreferenceFragment which should be shown by default as follows:

Intent intent = new Intent( this, Preferences.class );
intent.putExtra( PreferenceActivity.EXTRA_SHOW_FRAGMENT, PreferencesFragment.class.getName() );
intent.putExtra( PreferenceActivity.EXTRA_NO_HEADERS, true );
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