CP470 UPDATED Actual Exam Questions and CORRECT Answers
0 view 0 purchase
Course
CP470
Institution
CP470
CP470 UPDATED Actual Exam Questions
and CORRECT Answers
What are parcelables? - CORRECT ANSWER- -Uses putExtra with parcelable as the
object
-Class has to implement parcelable
What two methods do you need for Parcelables? - CORRECT ANSWER-
describeContents() and WriteToParcel() - called whe...
CP470 UPDATED Actual Exam Questions
and CORRECT Answers
What are parcelables? - CORRECT ANSWER- ✔✔-Uses putExtra with parcelable as the
object
-Class has to implement parcelable
What two methods do you need for Parcelables? - CORRECT ANSWER-
✔✔describeContents() and WriteToParcel() - called when startActivity is executed, takes
parcel as input parameter
How do you retrieve a Parcelable from another activity? - CORRECT ANSWER-
✔✔getParcelableExtra()
How can you store files? - CORRECT ANSWER- ✔✔-SharedPreferences
-Internal/External
-SQL Databases
-Content Providers
External Storage - CORRECT ANSWER- ✔✔-could be SD Card
-World-readable
-Permissions set on AM
Internal Storage - CORRECT ANSWER- ✔✔-Always available
-Device's file system
-Only app can access files
-System removes all upon uninstall
-getFilesDir() for permanent
-getCacheDir() for temporary
SQLite DB - CORRECT ANSWER- ✔✔A - all or no mods performed
, C - when transaction has completed, all data is in consistent state
I - mods made by concurrent transactions must be isolated
D - effects are permanent
SQLiteOpenHelper - CORRECT ANSWER- ✔✔-Used for creating and opening DB
-Need to override constructor, onCreate, onUpgrade
-SQLiteOpenHelper(context, dbName, null, version)
How do you create an SQL DB? - CORRECT ANSWER- ✔✔Must call super
super(context, DB_NAME, NULL, VER)
SQLiteDB - onCreate - CORRECT ANSWER- ✔✔-if DB doesn't exist, this will be called
-Creating tables should occur here
-execSQL used to execute SQL statements
SQLiteDB - onUpgrade() - CORRECT ANSWER- ✔✔-if DB exists but ver number is newer,
then this is called
-used to drop tables, add tables, do anything else to update new schema
How do you open a read/write database? - CORRECT ANSWER- ✔✔Database =
dbHelper.getWritableDatabase()
Content values - CORRECT ANSWER- ✔✔-Class used for inserting rows into DB
-put(columnName, value)
rawQuery - CORRECT ANSWER- ✔✔-allows for arguments in queries
Cursor - CORRECT ANSWER- ✔✔-queries always return a cursor object
-storage object that contains rows from a query
-pointer to table rows
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller MGRADES. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.49. You're not tied to anything after your purchase.
