i must admit, i havent tried what i am writen below
in manifest.xml, inside your main activity declare an intent filter as:
Using xml Syntax Highlighting
<intent-filter>
<action android:name=”android.intent.action.MEDIA_SCANNER_SCAN_FILE” />
<category android:name=”android.intent.category.LAUNCHER” />
<category android:name=”android.intent.category.DEFAULT” />
</intent-filter>
Parsed in 0.001 seconds, using
GeSHi 1.0.8.4
but in your application you must check the intent's extras because this intent is triggered for all media save operations