Most location-sensitive applications will need to be reactive to user movement. Simply polling the Location Manager will not force it to get new updates from the Location Providers.
Use the **request.. Read more
The purpose of location-based services is to find the physical location of the device.
Access to the location-based services is handled using the Location Manager system Service. To access the Locati.. Read more
Depending on the device, there may be several technologies that Android can use to determine the cur-rent location. Each technology, or Location Provider, will offer different capabilities including p.. Read more
Create an Application to Manage Test Location Providers
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In this example, you’ll create a new project to set up the emulator to simplify testing.. Read more
Using Location - Based Services
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Location-based services (LBS) is an umbrella term used to describe the different technologies used to find the device’s current locatio.. Read more
One of the defi ning features of mobile phones is their portability, so it’s not surprising that some
of the most enticing Android features are the services that let you find, contextualize, and map .. Read more
Using the Provider
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You can now update the Earthquake Activity to use the Earthquake Provider to store quakes, and use
them to populate the List View.
1\. Within the Earthquake .. Read more
Having created an application that features a list of earthquakes, you have an excellent opportunity to share this information with other application
By exposing these data through a Content Provider.. Read more
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
