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Sunday, August 6, 2017

Preguntas respuestas Android 4

1. If we add the following property to a Widget:

 


The result is:
The Widget will show a splash screen using the preview image
The preview image will be set as a background on the Widget
The user will be able to see a preview of what the app widget looks like 

2. What is a Keystore on Android?
Contains keys to decompile different builds of an Android application
Contain access to private files on the project
Is a binary file that contains one or more private keys

3. Is it possible that Google Play Store accept an APK signed with a debug certificate for publishing?
No 
Yes

4. If we create a Widget with the following specifications:

minWidth: 110dp

minHeight: 250dp

How many columns and rows the widget is going to take on the screen (https://developer.android.com/guide/practices/ui_guidelines/widget_design.html)?
2 columns, 4 rows 
3 columns, 4 rows
2 columns, 2 rows

5. If we are creating a Widget which of the following class we need to declare on the AndroidManifest.xml?
AppWidgetProvider 
AppWidgetProviderInfo
WidgetContentProvider

6. What is a AppWidgetProvider class
A class that defines the basic widget information
Defines the basic methods that allow you to programmatically interact with the widget 
Is a class that extends from an Activity

7. Which property we need to set on the AppWidgetProviderInfo to defines how often the App Widget should update?
android:update
android:updatePeriod
android:updatePeriodMillis 

8. Is it possible to use Android Studio to generate signed APKs ?
Yes 
No
It is only possible on the command line

9. What is a Widget?
A View that displays a constraint layout
Widgets are miniature application views that can be embedded in other applications 
Widgets are a complete application views that can be merged in other applications

10. Is it necessary to define a initial layout for a widget?
No
Yes 


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