Blackberry JAVA DEVELOPMENT ENVIRONMENT - - GPS AND MAPS - DEVELOPMENT GUIDE Instrukcja Użytkownika Pobierz pdf (Strona 22)

SQLite is designed to make efficient use of memory resources and includes only a small set of features. As a result, it can be a

good choice for embedded and wireless applications. You should consider using the SQLite API if you want to store application

data, and your application would benefit from the additional structure and manageability that a relational database can provide.

You can use the SQLite API, provided in the net.rim.device.api.database package, to store application data persistently

to eMMC memory or a microSD card. The SQLite API provides the option to store data in an encrypted format using the same

mechanisms as the Persistent Store APIs.

To download a sample application that demonstrates how to use the SQLite API, visit www.blackberry.com/go/sqlitedemo. For

more information about SQLite, see the BlackBerry Java Application SQLite Development Guide and the API reference for the

BlackBerry® Java® Development Environment.

Connections

Enhanced Network API

You can specify how your application opens a connection to a wireless network by using the enhanced Network API that is

provided in the net.rim.device.api.io.transport and net.rim.device.api.io.transport.options

packages. The Network API simplifies how your application establishes a connection to a wireless network and enables you to

find the wireless transport types available on the BlackBerry® device. For example, you can use the Network API to find the

availability and signal strength of a Wi-Fi® network that your application can use to open an HTTP connection.

You can use the Network API to specify a preferred list of wireless transport types. For example, if a Wi-Fi network is not available

or does not have sufficient signal strength, you can have your application search for other transport types, such as a cellular

network. If you do not specify a transport type, by default the BlackBerry device searches for all available transport types.

For more information about the Network API, see the BlackBerry Java Application Development Guide and the API reference

for the BlackBerry® Java® Development Environment.

Hotspot API

You can create an application that helps users connect to hotspots, by using the Hotspot API that is provided in the

net.rim.device.api.wlan.hotspot package. Your application can interact with the Wi-Fi® transceiver on a Wi-Fi

enabled BlackBerry® device, and the application that users use to manage a connection to a Wi-Fi network.

Previously, to connect to a hotspot a user completed multiple tasks. Now, to automate the process of associating and

authenticating a user to a hotspot, you can use the Hotspot API to create an application that performs the following functions:

• automatically associate a Wi-Fi profile on the device, with a hotspot

• automatically log in users to a hotspot

• store a user's hotspot login information on the device

• integrate with the setup wizard and the Wi-Fi profiles that users use to manage a connection to a Wi-Fi network

Feature and Technical Overview

Connections

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Blackberry JAVA DEVELOPMENT ENVIRONMENT - - GPS AND MAPS - DEVELOPMENT GUIDE Instrukcja Użytkownika Strona 22