Android Quiz
What are the 4 application building blocks?
1. Activity 2. Service 3. Content Provider 4. Intent Receiver
Which process converts byte code into a system-dependent binary?
ART
What are the 4 activity states?
Active, Paused, Stopped, Inactive
An activity is implemented as a subclass of _____ class.
Activity
a single screen of UI that appears in your app - the fundamental unit of GUI
Activity
The Android SDK tools compile the code—along with any data and resource files—into an ____________, an archive file with an _____ suffix.
Android package, .apk
What is a subclass of Activity and the base class for activities that use the support library action bar features?
AppCompatActivity
When you rotate the devices' orientation from portrait to landscape How to handle rotation?
Create Landscape Layout variation
process virtual machine originally used by Android
Dalvik
What directory are images stored in?
Drawable
actions that occurs when a user interacts with widgets e.g. - clicking, typing, scrolling, etc....
Events
What kind of build / compile management system does android use?
Gradle
What kind of event is added to onCreate method to capture user input?
KeyListener
Which method is called when an activity first starts or resumes?
OnCreate()
In android _______ is used to provide access to resources defined in XML files.
R.java
items that appear on screen in an Activity e.g. - widget : GUI control such a button or text field - layout : invisible container that manages positions/sizes of widgets
View
_____ ______ refers an Android application launched to process an element of data or respond to an event, such as the receipt of a text message.
broadcast receivers
_______ ________ play the role of database servers
content providers
What are the 6 log methods for Android?
debug, error, info, verbose, warning, log stack trace of an exception
To access the resource we need to invoke ________method passing in the id of the resource to be fetched.
findViewById()
current state of an activity is referred to as?
instance state
The _______ file presents essential information about your app to the Android system, information the system must have before it can run any of the app's code.
manifest
Both __________ and ____________ methods receive the same Bundle that contains the instance state information.
onCreate() and onRestoreInstanceState()
Which method is called when an activity is done
onDestoy()
Which method is called when activity is in the background
onPause()
Which method is called when an Activity is recreated after previously destroyed?
onRestoreInstanceState()
Which activity is called on start, restart, or after pause
onResume()
which method is called automatically and saves any non-persistence state of app?
onSaveInstanceState()
each application, by default, has access only to the components that it requires to do its work and no more refers to what principle
principle of least privilege
Most security between applications and the system is enforced at the _____ level through standard Linux facilities,
process
Which directory is strings.xml found in?
res/values/strings.xml
a _______ is an isolated area of the operating system that does not have access to the rest of the system's resources, unless access permissions are granted by the user when the application is installed.
sandbox
a _________ should be used for any application that needs to persist for a long time
service
What is the definition of non-persistence?
stays for now, but lost on shutdown / reboot
How does the application know the initial activity to call?
stored in the AndroidManifest.xml
Radio button needs a listener so that the app knows when it is interacted with. This is done through the ____________ interface
"OnCheckedChangeListener"
What is the name for a drop down list in an Android app?
Spinner
Activities are maintained in a ______
Stack
