[Android] Make CoreSelection and HistorySelection statically instantiable.

Allows showing the dialogs without the need for an actual variable or ugly "new HistorySelection(fm, tag).show();" syntax.

Also moved the else if for "Quit Retroarch" to the bottom of the if statements so its structured relative to the UI.

android/phoenix/src/com/retroarch/browser/CoreSelection.java

@@ -27,6 +27,16 @@ public final class CoreSelection extends DialogFragment
 {
 	private IconAdapter<ModuleWrapper> adapter;
 
+	/**
+	 * Creates a statically instantiated instance of CoreSelection.
+	 * 
+	 * @return a statically instantiated instance of CoreSelection.
+	 */
+	public static CoreSelection newInstance()
+	{
+		return new CoreSelection();
+	}
+
 	@Override
 	public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
 	{

android/phoenix/src/com/retroarch/browser/HistorySelection.java

@@ -33,6 +33,16 @@ public final class HistorySelection extends DialogFragment
 	private FragmentActivity ctx;
 	private IconAdapter<HistoryWrapper> adapter;
 
+	/**
+	 * Creates a statically instantiated instance of HistorySelection.
+	 * 
+	 * @return a statically instantiated instance of HistorySelection.
+	 */
+	public static HistorySelection newInstance()
+	{
+		return new HistorySelection();
+	}
+
 	@Override
 	public void onCreate(Bundle savedInstanceState)
 	{

android/phoenix/src/com/retroarch/browser/mainmenu/MainMenuFragment.java

@@ -347,14 +347,7 @@ public final class MainMenuFragment extends PreferenceListFragment implements On
 		// Load Core Preference
 		else if (prefKey.equals("loadCorePref"))
 		{
-			final CoreSelection coreSelection = new CoreSelection();
+			CoreSelection.newInstance().show(getFragmentManager(), "core_selection");
-			coreSelection.show(getFragmentManager(), "core_selection");
-		}
-		// Quit RetroArch preference
-		else if (prefKey.equals("quitRetroArch"))
-		{
-			// TODO - needs to close entire app gracefully - including
-			// NativeActivity if possible
 		}
 		// Load ROM Preference
 		else if (prefKey.equals("loadRomPref"))
@@ -382,8 +375,13 @@ public final class MainMenuFragment extends PreferenceListFragment implements On
 		// Load ROM (History) Preference
 		else if (prefKey.equals("loadRomHistoryPref"))
 		{
-			final HistorySelection historySelection = new HistorySelection();
+			HistorySelection.newInstance().show(getFragmentManager(), "history_selection");
-			historySelection.show(getFragmentManager(), "history_selection");
+		}
+		// Quit RetroArch preference
+		else if (prefKey.equals("quitRetroArch"))
+		{
+			// TODO - needs to close entire app gracefully - including
+			// NativeActivity if possible
 		}
 
 		return true;