For the More Curious: Concurrent Documents
If you tried testing the overview screen with CriminalIntent and sharing crime data with other apps, you may have noticed some interesting behavior. When you opt to send a crime report from CriminalIntent, the activity for the app you select from the chooser is added to its own task rather than to CriminalIntent’s task (Figure 23.14).
Figure 23.14 Gmail launched into a separate task
The implicit intent chooser creates a new, separate task for activities launched with the
This behavior uses a notion called ...