Add a few specific file type support

Support to receive and send a few specific file types
.xls, .zip, .doc, .ppt, .pdf

AndroidManifest.xml

@@ -41,6 +41,13 @@
                 <data android:mimeType="image/*" />
                 <data android:mimeType="video/*" />
                 <data android:mimeType="audio/*" />
+                <data android:mimeType="text/plain" />
+                <data android:mimeType="text/html" />
+                <data android:mimeType="application/zip" />
+                <data android:mimeType="application/vnd.ms-excel" />
+                <data android:mimeType="application/msword" />
+                <data android:mimeType="application/vnd.ms-powerpoint" />
+                <data android:mimeType="application/pdf" />
             </intent-filter>
             <intent-filter>
                 <action android:name="android.intent.action.SEND_MULTIPLE" />

src/com/android/bluetooth/opp/Constants.java

@@ -116,6 +116,11 @@ public class Constants {
         "audio/*",
         "text/plain",
         "text/html",
+        "application/zip",
+        "application/vnd.ms-excel",
+        "application/msword",
+        "application/vnd.ms-powerpoint",
+        "application/pdf",
     };
 
     /**