- Receiver adds intent
- Can send arbitrary byte data
- Specify a different layout for the lockscreen
- Our phones know a ton about us - we can leverage that for magical experiences
- Location Based services - Fused Location Provider is much simpler to use
- Geofencing - sends you a pending intent to monitor entry/exit
- Activity Recognition - can vary your code (e.g., update rates) based on detecting user activity
- Standing still vs. running vs. moving quickly (e.g. in a car)
- Google+ - Can know about the current user (picture, name)
- We can know about your friends, what they're reading, etc. for recommendations or pre-fetching things your user might want to see
- Avoiding seeming stalkerish
- Tell them what you're doing
- Tell them why
- Let them opt out
- Don't transmit or store contact details or location
- Supply a privacy policy on Play
- Allow users to delete stored data (including on your servers!)
- Introducing visceral elements lets people love the app
- Focus sharply on sight, sound and touch to connect with people
- Sound
- Text to speech - might need to get installed, but is simple to call
- Speech recognition - start an activity to do the listening, get the result back in
onActivityResult()- Can iterate through likely results to use your context knowledge to pick the best one
- Touch
- Touch elements should be based on a 48dp rhythm, 8, 16dp
- Elements should have have feedback states for all states
- Accessibility support through contentDescription should be descriptive of the content, not the container (e.g. "Send", not "Button")
- Use Touch Gestures, including multi-finger detection
- Google Analytics for mobile - is an API for event tracking, integrates with Play
- Eliminate the refresh button, make your data always timely and useful
- Use Google Cloud Messaging to deliver data from your server to devices, or from device to device
- Use SyncAdapter to push data from the device to your server
- Batch your on-demand downloads into the sync process to be more efficient with the radio usage