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16 Cards in this Set
- Front
- Back
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What two steps must be performed to include a Google map into an app? |
1. Create and include a unique API key (from Google dev console) 2. Create a layout file to contain the map |
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Where is a Google map always centered by default? |
At the intersection of the equator and prime meridian (0.0, 0.0) |
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What values are GPS coordinates? |
Doubles |
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How can you set a default map start location in XML? |
map:cameraTargetLat:"" map:cameraTargetLng:"" |
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How can you set a default map start location in Java? |
goToLocation(lat, long, zoom) |
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How does geocoding work? |
Wraps up all request and response functionality; returns everything back as Java object |
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What permission must be included in the manifest to access the user's current location? |
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What are the non-code and Java code approaches to getting the user's current location? |
1. mMap.setMyLocationEnabled(true) 2. showCurrentLocation() { calls to Google API } |
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What are the components that make up an Android Application? |
1. Activities: screens of the app, made up of views 2. Services: perform background jobs; usually non-visual 3. Content providers: manage access to data, allow apps to exchange data 4. Broadcast receivers: reacts to system messages and messages from other apps |
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What are the four most important files/folders in an Android project? |
1. res folder: contents app resources 2. Manifest: information and permissions of the app 3. Java code files: app itself 4. Layout files: visual appearance tied to activities |
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Activity |
An application component that provides a screen (made up of views) |
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What are the layers of the Android framework? |
1. Applications 2. Application framework (managers, content providers) 3. Libraries (SQLite, OpenGL) AND Android Runtime (virtual machine, C#) 4. Linux Kernel (drivers) |
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Why is the activity lifecycle important? |
1. Allows app to not crash when another app starts 2. Allows user to not lose progress/saved data when app is destroyed 3. Allows app to not do heavy processing or network operations while user is away from it |
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When the user launches another activity that appears in front of the previous one, what lifecycle methods get called? |
onPause(), then onStop() |
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What happens when the user returns to an activity that has stopped? |
onRestart() is called, followed by start/resume |
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Where is the UI updated? |
On the Main Thread |
