I/O BootCamp 2011: Beginner's Guide to Android
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17 terms
Terms | Definitions |
|---|---|
 activity | a single screen; can invoke functionality from other applications. |
| service | long-running operations in background; has no UI. |
| content provider | retrieves/stores data; system uses it to manage a shared set of app data |
| broadcast receiver | responds to system-wide messages (normal or ordered) ; very lightweight |
| intents | messages that link app components together (explicit or implicit) |
| manifest | declare features, components, and version compatibility. Sets app permissions. |
| activity lifecycle | Activity Created -> Activity Running -> returns to app or gets destroyed. |
| unobstrusive content | event-driven notifications; even app can link to it! |
| widgets | display app info on homescreen; keep users engaged! |
| cloud to device messages | the server "pushes" messages (data) to app. |
| UI | defined by XML layout files, a hierarchy of View & ViewGroup |
| Resources framework | comprised by res folder, esp. R.java. Qualifiers of these allow different device configs. |
| supporting multiple screens | Think web style layout. Provide density assets and size layouts |
| hardware sensors | devices have these to make more fluid experience with environment (accelerometer, gyroscope, etc.) |
| background tasks | multitasking, regular updates, and offline availability granted. |
| accessibility | make tasks, tweaks, setting changes, and UI accessible. |
| quality | in conjunction with Activity lifecycle; Set up feedback mechanisms and consult an app designer to ensure this. |
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