use OI File Manager intents to handle open/save file selection

res/layout/file_dialog.xml

@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2010 Thialfihar <thi@thialfihar.org>
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<LinearLayout
+  xmlns:android="http://schemas.android.com/apk/res/android"
+  android:layout_width="fill_parent"
+  android:layout_height="wrap_content"
+  android:paddingLeft="5dip"
+  android:paddingRight="5dip"
+  >
+    <EditText
+        android:id="@+id/input"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_weight="1"
+      />
+
+   <ImageButton
+        android:id="@+id/btn_browse"
+        android:layout_height="wrap_content"
+        android:src="@drawable/ic_launcher_folder_small" android:layout_width="wrap_content"/>
+</LinearLayout>