Blackberry JAVA DEVELOPMENT ENVIRONMENT - - DEVELOPMENT GUIDE Manual page 40

Development Guide
• net.rim.device.api.ui.TouchEvent
• net.rim.device.api.ui.Field
• net.rim.device.api.ui.Manager
• net.rim.device.api.ui.Screen
2. Create a class that extends the Manager class, the Screen class, the Field class, or one of the Field subclasses.
public class newButtonField extends ButtonField {
3. In your implementation of the touchEvent(TouchEvent message) method, invoke
TouchEvent.getEvent().
4. Check if the value that TouchEvent.getEvent() returns is equal to TouchEvent.MOVE.
protected boolean touchEvent(TouchEvent message) {
switch(message.getEvent()) {
case TouchEvent.MOVE:
Dialog.alert("Move event occurred");
return true;
}
return false;
}
Respond to a user touching the screen lightly
1. Import the following classes:
• net.rim.device.api.ui.TouchEvent
• net.rim.device.api.ui.TouchGesture
• net.rim.device.api.ui.Field
• net.rim.device.api.ui.Manager
• net.rim.device.api.ui.Screen
2. Create a class that extends the Manager class, the Screen class, the Field class, or one of the Field subclasses.
public class newButtonField extends ButtonField {
3. In your implementation of the touchEvent(TouchEvent message) method, invoke
TouchEvent.getEvent().
4. Check if the value that TouchEvent.getEvent() returns is equal to TouchEvent.DOWN.
protected boolean touchEvent(TouchEvent message) {
switch(message.getEvent()) {
case TouchEvent.DOWN:
Dialog.alert("Touch occurred");
return true;
}
return false;
}
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Touch screen events