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- Creating user interfaces
- Screens
- UI components
- Add a UI component to a screen
- Create a dialog box
- Creat a bitmap
- Create a button
- Create a list
- Create an alphanumeric drop-down list
- Create a text list that can be filtered
- Create a check box
- Create a radio button
- Create a date field
- Create a text field
- Create a read-only text field that allows formatting
- Create an editable text field that has no formatting and accepts filters
- Create an editable text field that allows special characters
- Create a password field
- Create a text field for AutoText
- Create a progress bar field
- Create a text label
- Create a list from which users can select multiple items
- Create a field to display a parent and child relationship between items
- Add a UI component to a screen
- Create a custom field
- Create a menu item
- Adding menu items to a BlackBerry device application
- Register a menu item
- Arrange UI components
- UI events
- Spell check
- Accessibility
- Notifying an assistive technology application when the UI changes
- UI changes that trigger a notification to an assistive technology application
- UI component states and properties
- Provide an assistive technology application with information about a UI change
- Provide an assistive technology application with information about text changes
- Provide an assistive technology application with access to information from a table
- Provide an assistive technology application with access to numeric values
- Allow an assistive technology application to receive notification of field changes
- Storing data
- Creating connections
- Network gateways
- Connections
- Wi-Fi connections
- Wireless access families
- Retrieve the wireless access families that a BlackBerry device supports
- Determine if a BlackBerry device supports multiple wireless access families
- Determine the wireless access family transceivers that are turned on
- Turn on the transceiver for a wireless access family
- Turn off the transceiver for a wireless access family
- Check if the Wi-Fi transceiver is turned on
- Check if the Wi-Fi transceiver is connected to a wireless access point
- Retrieve the status of the wireless access point or the active Wi-Fi profile
- Open a Wi-Fi socket connection
- Open a Wi-Fi HTTP connection
- Open a Wi-Fi HTTPS connection
- Managing applications
- Using custom messages and folders in the message list
- Creating a module for background processes
- Creating a module for the UI
- Create the module for background processes
- Start the module for background processes or the module for the UI
- Create an icon for a custom message
- Create a custom folder in the message list
- Send a notification when a custom folder changes
- Create an indicator for the number of messages in a custom folder
- Hide an indicator for a custom folder
- Remove an indicator for a custom folder
- Applications for push content
- Localizing BlackBerry device applications
- Controlling access to APIs and application data
- Check if a code signature is required
- Java APIs with controlled access
- Register to use controlled APIs
- Restrictions on code signatures
- Request a code signature
- Register a signature key using a proxy server
- Sign an application using a proxy server
- View the signature status for an application
- Using keys to protect APIs and data
- Protect APIs using code signing keys
- Protect runtime store data using code signing keys
- Protect persistent data using code signing keys
- Testing a BlackBerry device application
- Packaging and distributing a BlackBerry Java Application
- Preverify a BlackBerry device application
- Application distribution over the wireless network
- Wireless pull (user-initiated)
- Wireless push (server-initiated)
- Distributing BlackBerry Java Applications over the wireless network
- Distributing BlackBerry device applications with the BlackBerry Desktop Software
- Application distribution through a computer connection
- Distributing an application from a computer
- Create an application loader file
- Install a BlackBerry device application on a specific device
- Specifing supported versions of the BlackBerry Device Software
- Glossary
- Provide feedback
- Legal notice
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Development Guide - BlackBerry Java Development Environment - 4.6.1
Create an icon for a custom message
You can associate an icon with a message. In the message list, the icon displays on the left side of a message.
- Import the following classes:
- Import the net.rim.blackberry.api.messagelist.ApplicationMessage interface.
- To create an icon based on an encoded image, when you create an instance of an ApplicationIcon, invoke EncodedImage.getEncodedImageResource with the name of the image file as an argument.
ApplicationIcon newIcon = new ApplicationIcon( EncodedImage.getEncodedImageResource( "ml_sample_new.png" ) ); ApplicationIcon openedIcon = new ApplicationIcon( EncodedImage.getEncodedImageResource( "ml_sample_opened.png" ) );
- To assign a status and an icon to a message, invoke ApplicationMessageFolderRegistry.registerMessageIcon and specify the following as parameters: a value for the message type for an BlackBerry®device application, a field from the ApplicationMessage.Status interface as the status argument, and an instance of an ApplicationIcon.
int MESSAGE_TYPE = 0; reg.registerMessageIcon( MESSAGE_TYPE, STATUS_NEW, newIcon ); reg.registerMessageIcon( MESSAGE_TYPE, STATUS_OPENED, openedIcon );
Parent topic: Using custom messages and folders in the message list