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java.lang.Object
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+--javax.microedition.lcdui.Displayable
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+--javax.microedition.lcdui.Screen
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+--javax.microedition.lcdui.Form
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+--net.rim.device.api.lcdui.BlackBerryForm
The BlackBerryForm class extends the functionality of the Form class.
The BlackBerryForm class implements Controllable and can be queried
to retrieve BlackBerry-specific Controls. For instance, on devices which support a virtual keyboard,
getControl(String) can be queried to return a VirtualKeyboardControl
object.
| Constructor Summary | ||
BlackBerryForm(String title)
Creates a new instance of a BlackBerryForm. |
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BlackBerryForm(String title,
Item[] items)
Creates a new instance of a BlackBerryForm |
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| Method Summary | ||
Control |
getControl(String controlType)
Obtain the object that implements the specified Control interface. |
|
Control[] |
getControls()
Obtain the collection of Controls
from the object that implements this interface. |
|
| Methods inherited from class javax.microedition.lcdui.Form |
append, append, append, delete, deleteAll, get, getHeight, getWidth, insert, set, setItemStateListener, size |
| Methods inherited from class javax.microedition.lcdui.Displayable |
addCommand, getTicker, getTitle, isShown, removeCommand, setCommandListener, setTicker, setTitle, sizeChanged |
| Methods inherited from class java.lang.Object |
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Constructor Detail |
public BlackBerryForm(String title)
javax.microedition.lcdui.Form(String)public BlackBerryForm(String title, Item[] items)
IllegalStateException - if one of the items is already owned by
another containerNullPointerException - if an element of the items array is nulljavax.microedition.lcdui.Form(String, Item[])| Method Detail |
public Control getControl(String controlType)
ControllableControl interface.
If the specified Control interface is not supported
then null is returned.
If the Controllable supports multiple objects that
implement the same specified Control interface, only
one of them will be returned. To obtain all the
Control's of that type, use the getControls
method and check the list for the requested type.
IllegalArgumentException - Thrown if controlType
is null.javax.microedition.media.Controllable.getControl(String)public Control[] getControls()
ControllableControls
from the object that implements this interface.
Since a single object can implement multiple
Control interfaces, it's necessary
to check each object against different Control
types. For example:
Controllable controllable;
:
Control cs[];
cs = controllable.getControls();
for (int i = 0; i < cs.length; i++) {
if (cs[i] instanceof ControlTypeA)
doSomethingA();
if (cs[i] instanceof ControlTypeB)
doSomethingB();
// etc.
}
The list of Control objects returned
will not contain any duplicates. And the list will not
change over time.
If no Control is supported, a zero length
array is returned.
javax.microedition.media.Controllable.getControls()
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Copyright 1999-2009 Research In Motion Limited. 295 Phillip Street, Waterloo, Ontario, Canada, N2L 3W8. All Rights Reserved.
Copyright 1993-2003 Sun Microsystems, Inc. 901 San Antonio Road, Palo Alto, California, 94303, U.S.A.
Copyright 2002-2003 Nokia Corporation All Rights Reserved.
Java is a trademark or registered trademark of Sun Microsystems, Inc. in the US and other countries.