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Google Associate-Android-Developer Exam Questions
- Topic 1: Understand the basic debugging techniques available in Android Studio/ Know how to build and run an Android app
- Topic 2: Understand how to use a Repository to mediate data operations/ Be able to create persistent Preference data from user input
- Topic 3: Display simple messages in a popup using a Toast or a Snackbar/ Be able to use the System Log to output debug information
- Topic 4: Be able to bind local data to a RecyclerView list using the Paging library/ Understand the architecture of the Android system
- Topic 5: Understand the Android activity lifecycle/ Understand how to create a custom View class and add it to a Layout
- Topic 6: Understand how to use breakpoints in Android Studio/ Understand how to implement drawer navigation
- Topic 7: Understand how to localize an app/ Understand how to display items in a Recycler View
- Topic 8: Understand how to define data using Room entities/ Be able to schedule a background task using WorkManager
- Topic 9: Be able to read and parse raw resources or asset files/ Be able to access Room database with data access object (DAO)
- Topic 10: Know how to apply content descriptions to views for accessibility/ Be able to describe the basic building blocks of an Android app
Free Google Associate-Android-Developer Exam Actual Questions
Note: Premium Questions for Associate-Android-Developer were last updated On 30-07-2024 (see below)
If you added to your build.gradle file a room.schemaLocation:
android {
defaultConfig {
javaCompileOptions {
annotationProcessorOptions {
arguments = ["room.schemaLocation": "$projectDir/schemas".toString
()]
}
}
}
}
Then, you build your app or module.
As a result you got a json file, with such path to it: app/schemas/your_app_package/db_package/DbClass/DB_VERSION.json What are the correct statements about this file? (Choose all that apply.)
Exported schema file example:
{
'formatVersion': 1,
'database': {
'version': 1,
'identityHash': 'd90c93040756d2b94a178d5555555555',
'entities': [
{
'tableName': 'tea_table',
'createSql': 'CREATE TABLE IF NOT EXISTS `${TABLE_NAME}` (`id` INTEGER
PRIMARY KEY AUTOINCREMENT NOT NULL, `name` TEXT, `type` TEXT, `origin` TEXT,
`steep_times` INTEGER, `Description` TEXT, `ingredients` TEXT, `cafeinLevel` TEXT, `favorite` INTEGER)',
'fields': [
{
'fieldPath': 'mId',
'columnName': 'id',
'affinity': 'INTEGER',
'notNull': true
},
{
'fieldPath': 'mName',
'columnName': 'name',
'affinity': 'TEXT',
'notNull': false
},
{
'fieldPath': 'mType',
'columnName': 'type',
'affinity': 'TEXT',
'notNull': false
},
{
'fieldPath': 'mOrigin',
'columnName': 'origin',
'affinity': 'TEXT',
'notNull': false
},
{
'fieldPath': 'mSteepTimeMs',
'columnName': 'steep_times',
'affinity': 'INTEGER',
'notNull': false
},
{
'fieldPath': 'mDescription',
'columnName': 'Description',
'affinity': 'TEXT',
'notNull': false
},
{
'fieldPath': 'mIngredients',
'columnName': 'ingredients',
'affinity': 'TEXT',
'notNull': false
},
{
'fieldPath': 'mCaffeineLevel',
'columnName': 'cafeinLevel',
'affinity': 'TEXT',
'notNull': false
},
{
'fieldPath': 'mFavorite',
'columnName': 'favorite',
'affinity': 'INTEGER',
'notNull': false
}
],
'primaryKey': {
'columnNames': [
'id'
],
'autoGenerate': true
},
'indices': [],
'foreignKeys': []
}
],
'views': [],
'setupQueries': [
'CREATE TABLE IF NOT EXISTS room_master_table (id INTEGER PRIMARY
KEY,identity_hash TEXT)',
'INSERT OR REPLACE INTO room_master_table (id,identity_hash) VALUES(42,
'd90c93040756d2b94a178d5555555555')'
]
}
}
In our TeaViewModel class, that extends ViewModel, we have such prorerty:
val tea: LiveData
An observer in our Activity (type of mViewModel variable in example is TeaViewModel) is set in this way:
mViewModel!!.tea.observe(this, Observer { tea: Tea? -> displayTea(tea) })
What will be a correct displayTea method definition?
About queries in DAO classes. Room verifies the return value of the query such that if the name of the field in the returned object doesn't match the corresponding column names in the query response, Room alerts you in one of the following two ways: (Choose two.)
For example, we have a BufferedReader reader, associated with the json file through
InputStreamReader. To get a file data we can do this:
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