preferenceactivity

I have preference screen extended PreferenceActivity . For targeting OS 4.0.3, I wanted to add < icon on action bar so I did this in onCreate() . ActionBar actionBar = getActionBar(); actionBar.setHomeButtonEnabled(true); actionBar.setDisplayHomeAsUpEnabled(true); It worked. < was added to left of app icon. But when I tap the item which goes into the next level (more detail screen), the < won't be displayed. Returning to the top level, the < appears again. I have never thought about a mechanism of nested preference since smart the PreferenceActivity hides it. Now my question is, why won't

I am creating a application with preference activity where the listpreference entries are problematically assigned. This application works fine on my emulator but while i test my application in mobile it shows error like this FATAL EXCEPTION: main java.lang.NullPointerException at android.widget.ArrayAdapter.createViewFromResource(ArrayAdapter.java:394) at android.widget.ArrayAdapter.getView(ArrayAdapter.java:362) at android.widget.AbsListView.obtainView(AbsListView.java:2033) This problem arises when i click that listpreference in my mobile. here this is my code prference.xml

I had the getpreferencescreen deprecated so I tryed to implement the header preference activity. here is my code: public class EditPreferences extends PreferenceActivity { ListPreference m_list_preference_dive_centre_rating; ListPreference m_list_preference_dive_region_rating; ListPreference m_list_preference_wreck; ListPreference m_list_preference_cave; MultyChoiceListPlugin m_list_preference_marine_life; ListPreference m_list_preference_region; Preference m_order_by_name; SharedPreferences.Editor m_editor; static Context m_context; int m_order_type_val = 0; boolean m_wreck_selected = false;

Ever since KitKat was released, I've noticed a whole bunch of my apps updating with "Fixing a crash in Kit Kat". Recently when I released my own app, I figured out the likely source of that is the new "isValidFragment" requirement for using preference activities. I haven't been able to get anyone, however, to explain why this new class is suddenly needed to validate fragments. Can anyone offer me an explanation of why this is required? Subclasses should override this method and verify that the given fragment is a valid type to be attached to this activity. The default implementation returns

I need to get the EditText that's defined in an xml layout which is dynamically loaded as a view in a preference dialog i.e. : public class ReportBugPreference extends EditTextPreference { @Override protected void onPrepareDialogBuilder(AlertDialog.Builder builder) { super.onPrepareDialogBuilder(builder); builder.setView(LayoutInflater.from(ctx).inflate(R.layout.preference_report_bug_layout,null)); EditText edttxtBugDesc = (EditText) findViewById(R.id.bug_description_edittext); // NOT WORKING } } EDIT : SOLUTION by jjnFord @Override protected void onPrepareDialogBuilder(AlertDialog.Builder

I am getting this error when I try to load and InterstitialAd from google AdMob. I know that I have written the code correctly. As I followed the short tutorial on https://developers.google.com/mobile-ads-sdk/docs/admob/advanced#play All the happens is I get and error in the Logcat. What might I be doing wrong. Here is the code: public class Pref extends PreferenceActivity implements SharedPreferences.OnSharedPreferenceChangeListener { /** The view to show the ad. */ private AdView adView; /* Your ad unit id. Replace with your actual ad unit id. */ private static final String AD_UNIT_ID = "MY

I would like to display a preference screen like the one in the Android settings app : using headers, PreferenceActivity, PreferenceFragment and headers categories. I wan't this result on a tablet : And this one on a smartphone : It works if I just use the basic headers, but if I try to add categories, it works on the smartphone, and crash on the tablet, where I get the exception "java.lang.NullPointerException: name == null" : FATAL EXCEPTION: main java.lang.RuntimeException: Unable to start activity ComponentInfo{fr.ifremer.testandroid/fr.ifremer.testandroid.models.preferences