You can get some intent information from logcat. When I shared with StumbleUpon, I noticed this in the log:
12-08 19:01:18.915: I/ActivityManager(139): Starting activity: Intent { act=android.intent.action.SEND typ=text/plain flg=0x3000000 cmp=com.google.android.gm/.ComposeActivityGmail (has extras) } from pid 4213
From this, I was able to get the application that appears in the StumbleUpon share list with the following filter:
<intent-filter> <action android:name="android.intent.action.SEND" /> <category android:name="android.intent.category.DEFAULT" /> <data android:mimeType="text/plain"/> </intent-filter>
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