Android Fundamentals II

Capacitación Fundamentos Básicos de Android

Transcript

1. Android Application Fundamentals II By : Luis Alonso Paulino Flores
2. Android Base Components ❖ ACTIVITIES ❖ CONTENT PROVIDERS ❖ BROADCAST RECEIVERS ❖ SERVICES
3. Content Provider A content provider manages a shared set of app data. Through the content provider, other apps can query or even modify the data (if the content provider allows it).
4. Content Provider - Content Resolver
5. Content Provider Can I create my own Content Provider? Yes, let’s go to see how we can do it :)
6. Content Provider Be careful! We have many differents ways to store data, you should use content providers just in this situations : • You want to offer complex data or files to other applications. • You want to allow users to copy complex data from your app into other apps. • You want to provide custom search suggestions using the search framework.
7. Broadcast Receiver ¿How much do you know about Broadcast Receivers?
8. Broadcast Receiver A broadcast receiver is a component that responds to system-wide broadcast announcements.
9. Services ¿How much do you know about Services?
10. Services A service is a component that runs in the background to perform long-running operations or to perform work for remote processes. A service does not provide a user interface.
11. Services Services can take two forms: ❖ Started ❖ Bound
12. Services Services Lifecycle
13. Services - IntentService Do you think, a Service and Intent Service are the same? Why?
14. Services - IntentService Service : • Main Thread • You have to call “stopSelf” method. • Multiple processes in parallel. IntentService : • Other Thread • You not have to call “stopSelf” method. • Manage a queue with processes, you are not allowed to use them in parallel.
15. Services How the system should continue the service in the event that the system kills it? START_NO_STICKY START_STICKY START_REDELIVER_INTENT
16. Services & BroadcastReceiver
17. Activity & Content Provider & Services & BroadcastReceiver Android Components working together!
18. Any questions?
19. Congratulations! Now, you are ready to start coding. Always keep in mind the fundamentals we have reviewed if you really want to be part of the great android family devs :).