How can I launch the QuickContact action in android 2.1. Like the one shown here
If you use the QuickContactBadge you'll get that functionality built in. If you want to use it from your own widget you can use ContactsContract.QuickContact#showQuickContact.
来源：https://stackoverflow.com/questions/3168115/how-can-i-launch-the-quickcontact-action-in-android-2-1