read the file data in android ?

Question

I download the *.ics file from the browser. Downloaded ics files are listed with my application icon. When I select the file it opens my application. At the time of opening application I need to read the file data. I am very new to android. I need some help to do this. Can any one help me to solve this??? i use the intent filter like this in mainfeast xml file

<intent-filter>
<action android:name="android.intent.action.VIEW" />
<category android:name="android.intent.category.DEFAULT" />
<data android:mimeType="*/*" />
<data android:pathPattern=".*\\.ics" />