Whitelist fragments appropriate for an activity

Change-Id: If4f8c4e9d9949b652946cffe0ebb09b587e5a042

src/com/android/settings/ChooseLockGeneric.java

@@ -17,6 +17,7 @@
 package com.android.settings;
 
 import android.app.Activity;
+import android.app.Fragment;
 import android.app.PendingIntent;
 import android.app.admin.DevicePolicyManager;
 import android.content.Context;
@@ -35,6 +36,7 @@ import android.view.ViewGroup;
 import android.widget.ListView;
 
 import com.android.internal.widget.LockPatternUtils;
+import com.android.settings.ConfirmLockPattern.ConfirmLockPatternFragment;
 
 import java.util.List;
 
@@ -50,6 +52,12 @@ public class ChooseLockGeneric extends PreferenceActivity {
         return modIntent;
     }
 
+    @Override
+    protected boolean isValidFragment(String fragmentName) {
+        if (ChooseLockGenericFragment.class.getName().equals(fragmentName)) return true;
+        return false;
+    }
+
     public static class ChooseLockGenericFragment extends SettingsPreferenceFragment {
         private static final int MIN_PASSWORD_LENGTH = 4;
         private static final String KEY_UNLOCK_BACKUP_INFO = "unlock_backup_info";