What intent to start to show Manage Accounts / Sync Settings activity? What is the easiest way to lookup intents for such system activities?
SOLUTION: Thanks to hint from @cant0na, to start Manage Accounts activity:
new Intent("android.settings.SYNC_SETTINGS")
How to lookup intents see @cant0na's answer.
The easiest way to find which intents to use is to see in logcat in eclipse or ddms while opening the app on your phone.
It will look something like this:
ActivityManager(2690): Starting: Intent { cmp=com.android.providers.subscribedfeeds/com.android.settings.ManageAccountsSettings } from pid 19036