private void getMyAppLauncherDefault() {
    final IntentFilter filter = new IntentFilter(Intent.ACTION_MAIN);
    filter.addCategory(Intent.CATEGORY_HOME);
    List<IntentFilter> filters = new ArrayList<IntentFilter>();
    filters.add(filter);
    List<ComponentName> activities = new ArrayList<ComponentName>();
    final PackageManager packageManager = (PackageManager) getPackageManager();

    packageManager.getPreferredActivities(filters, activities, null);
    for (ComponentName activity : activities) {

        Log.d(TAG,"======packet default:==="+activity.getPackageName());
    }
}

16:02:44.817 /com.exam D/Sample: ======packet default:===com.sec.android.gallery3d
 16:02:44.827 /com.exam D/Sample: ======packet default:===com.android.mms
 16:02:44.827 /com.exam D/Sample: ======packet default:===com.android.mms
 16:02:44.827 /com.exam D/Sample: ======packet default:===com.vlingo.midas
 16:02:44.827 /com.exam D/Sample: ======packet default:===com.sec.android.app.sbrowser
 16:02:44.827 /com.exam D/Sample: ======packet default:===com.sec.android.gallery3d
 16:02:44.827 /com.exam D/Sample: ======packet default:===com.android.mms
 16:02:44.827 /com.exam D/Sample: ======packet default:===com.sec.android.app.launcher
 16:02:44.827 /com.exam D/Sample: ======packet default:===com.sec.android.app.sbrowser
 16:02:44.827 /com.exam D/Sample: ======packet default:===com.android.mms
 16:02:44.827 /com.exam D/Sample: ======packet default:===com.google.android.googlequicksearchbox
 16:02:44.827 /com.exam D/Sample: ======packet default:===com.sec.android.app.sbrowser
 16:02:44.827 /com.exam D/Sample: ======packet default:===com.sec.android.gallery3d
 16:02:44.827 /com.exam D/Sample: ======packet default:===com.android.mms
 16:02:44.827 /com.exam D/Sample: ======packet default:===com.google.android.apps.plus

public static boolean isMyAppDefault(Context context) {
        final IntentFilter filter = new IntentFilter(Intent.ACTION_MAIN);
        filter.addCategory(Intent.CATEGORY_HOME);

        List<IntentFilter> filters = new ArrayList<IntentFilter>();
        filters.add(filter);

        final String myPackageName = context.getPackageName();
        List<ComponentName> activities = new ArrayList<ComponentName>();
        final PackageManager packageManager = (PackageManager) context.getPackageManager();

        packageManager.getPreferredActivities(filters, activities, null);

        for (ComponentName activity : activities) {
            if (myPackageName.equals(activity.getPackageName())) {
                return true;
            }
        }
        return false;
    }

private boolean isDefaultApp(Context context) {
        String packageApp= context.getPackageName();
        Intent intent = new Intent(Intent.ACTION_MAIN);
        intent.addCategory(Intent.CATEGORY_HOME);
        ResolveInfo resolveInfo = context.getPackageManager().resolveActivity(intent, PackageManager.MATCH_DEFAULT_ONLY);
        return packageApp.equals(resolveInfo.activityInfo.packageName);
    }