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- Creating user interfaces
- Screens
- Touch screen orientation and direction
- Working with the accelerometer of a BlackBerry device
- Types of accelerometer data
- Accelerometer
- Retrieve accelerometer data at specific intervals
- Query the accelerometer when the application is in the foreground
- Query the accelerometer when the application is in the background
- Store accelerometer readings in a buffer
- Retrieve accelerometer readings from a buffer
- Get the time a reading was taken from the accelerometer
- UI components
- Add a UI component to a screen
- Create a dialog box
- Create a bitmap
- Create a button
- Create a list
- Create a drop-down list
- Create a search field
- Create a check box
- Create an option button
- Create a date field
- Creating a text field
- Create a progress indicator
- Create a text label
- Create a list box
- Create a field to display a tree view
- Add a UI component to a screen
- Create a custom field
- Add a menu item to a BlackBerry Device Software application
- Adding a menu item to a BlackBerry Device Software application
- Register a menu item
- Arrange UI components
- Events
- Touch screen events
- Types of touch screen events
- Respond to touch screen events
- Respond to system events while the user touches the screen
- Respond to a user sliding a finger up quickly on the screen
- Respond to a user sliding a finger down quickly on the screen
- Respond to a user sliding a finger to the left quickly on the screen
- Respond to a user sliding a finger to the right quickly on the screen
- Respond to a user clicking the screen
- Respond to a user touching the screen twice quickly
- Respond to a user touching and dragging an item on the screen
- Respond to a user touching the screen lightly
- Respond to a scroll action
- Respond to a user touching the screen in two locations at the same time
- Keyboard on a BlackBerry device with a touch screen
- Spell check
- Accessibility
- Integrating with assistive technology software
- 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
- Enable an assistive technology application to receive notification of UI events
- Storing data
- Creating connections
- Managing applications
- Using custom messages and folders in the message list
- Applications for push content
- Localizing BlackBerry device applications
- Controlling access to APIs and application data
- Testing a BlackBerry device application
- Packaging and distributing a BlackBerry Java Application
- Glossary
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Development Guide - BlackBerry Java Development Environment - 4.7.0
Receive notification when the orientation of the touch screen changes
- Import the net.rim.device.api.ui.Manager class.
- Override net.rim.device.api.ui.Manager.sublayout(int, int).
protected void sublayout(int width, int height) { int x = 0; int y = 0; Field field; int numberOfFields = getFieldCount(); for (int i=0; i<numberOfFields; ++i) { field = getField(i); layoutChild(field, width, height); setPositionChild(field, x, y); field.setPosition(x,y); x += field.getPreferredWidth(); y += field.getPreferredHeight(); } setExtent(width,height); }
Parent topic: Touch screen orientation and direction