Preguntas respuestas Android 1

1. What is an advantage to use a debugger on Android Studio?

Examine variables and evaluate expressions at runtime 

Automatically eliminate errors on the application

Eliminate errors when .APK is generated

2. What is an Intent?

Intent is a messaging object you can use to request an action from another app component

Intents facilitate communication between components in several ways

All of the above 

3. In which of the following Activity Lifecycle makes the activity visible to the user

onStart() 

onCreate()

onPause()

Examine the following code: 

4. Suppose savedInstanceState is different from null, which is the correct output on the Logcat:

onCreate() No saved state available

onCreate() Restoring previous state 

TAG onCreate() Restoring previous state

5. Suppose we have a project called “MyProject”, where is the path for the string file resources?

MyProject/res/strings/string.xml

MyProject/res/values/string.xml 

MyProject/res/drawable/string.xml 

6. What is a Service?

It is an application component that can perform communication between layouts 

Service facilitates communication between fragments

It is an application component that can perform long-running operations in the background 

After you execute this explicit intent:

7. The result will be:

Intent is going to start DownloadService class 

The system will examine all of the installed apps to determine which ones can handle DownloadService

The code just creates a new intent

8. What is a breakpoint?

It is a signal that tells the debugger to temporarily suspend execution of the application 

It Fixes an error when the application is running

It is a signal that tells the debugger to continue the execution of the application

9. What is a Layout on Android?

It defines the visual structure for a user interface using an XML file 

It is a class that references a TextView

A Layout defines an XML permission for an application

Given the next .XML containing a group of checkboxes:

10. Which attribute do we need to add in order to add click event?

android:onClick 

android:click

android:listenerOnClick