Exposing Access to the Data Source
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You can expose queries and transactions with your Content Provider by implementing the delete, insert, update, and query methods... Read more
Create a new Content Provider by extending the abstract ContentProvider class. Override the onCreate method to open or initialize the underlying data source you’re exposing with this new provider. The.. Read more
The Android Media Store provides a managed repository for audio, video, and image files. Whenever you add a new multimedia file to the Android filesystem, it should be added to the Media Store to expo.. Read more
Content Providers represent files as fully qualified URIs rather than raw file data. To insert a file into a Content Provider, or access a saved file, use the Content Resolvers openOutputStream or ope.. Read more
Adding, Updating, and Deleting Content
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To perform transactions on Content Providers, use the delete, update, and insert methods on the ContentResolver object.
.. Read more
Content Providers are a generic interface mechanism that lets you share data between applications. By abstracting away the underlying data source, Content Providers let you decouple your application l.. Read more
INTERNATIONAL Note
Following the end of Queen Elizabeth II’s record-breaking reign of seven decades on Thursday, some image and national symbols in the United Kingdom and across the Commonwealth will.. Read more
To extract actual values from a result Cursor, first use the moveTo<location> methods described pre-viously to position the Cursor at the correct row of the result set.
With the Cursor at the d.. Read more
Android Database Design Considerations
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There are several considerations specific to Android that you should consider when designing your databas
❑Files (such a.. Read more
SQLiteOpenHelper is an abstract class that wraps up the best practice pattern for creating, opening, and upgrading databases. By implementing and using an SQLiteOpenHelper, you hide the logic used to .. Read more
It’s good practice to create a helper class to simplify your database interactions.
Consider creating a database adapter, which adds an abstraction layer that encapsulates database inter-actions. It .. Read more
SQLite is a relational database management system (RDBMS). It is well regarded, being:
❑Open source
❑ Standards-compliant
❑ Lightweight
❑Single-tier
It has been implemented as a compact C library.. Read more
All di political parties for Nigeria don finish dia primary elections as na Thursday 9 June 2022 di INEC deadline for completion of primaries and submission of presidential candidates go expire.
On W.. Read more
It’s good practice to use Shared Preferences or a database to store your application data, but there are
still times when you’ll want to use fi les directly rather than rely on Android’s managed mech.. Read more
At the moment the Queen died, the throne passed immediately and without ceremony to the heir, Charles, the former Prince of Wales.
But there are a number of practical - and traditional - steps which .. Read more
Queen Elizabeth II was the longest-reigning monarch in British history. She had four children, eight grandchildren and 12 great-grandchildren.
She died on 8 September after 70 years on the throne and.. Read more
aged 96, after reigning for 70 years.
Her family gathered at her Scottish estate after concerns grew about her health earlier on Thursday.
The Queen came to the throne in 1952 and witnessed enormous.. Read more
In Chapter 5, you created an earthquake monitor that showed a list of recent earthquakes based on an Internet feed.
In the following example, you’ll create a Preferences page for this earthquake view.. Read more
The data persistence techniques in Android provide options for balancing speed, efficiency, and robustness:
❑Shared Preferences When storing the UI state, user preferences, or application settings, y.. Read more
In this chapter, you’ll be introduced to three of the most versatile data persistence techniques in Android — preferences, local files, and SQLite databases — before looking at Content Providers.
Sav.. Read more
