Posting the code
This is the custom main screen (created to have a black background)
public class CustomMainScreen extends MainScreen {
private VerticalFieldManager container;
public CustomMainScreen(String title) {
super(Manager.NO_VERTICAL_SCROLL | Manager.NO_VERTICAL_SCROLLBAR);
setTitle(title);
VerticalFieldManager internalManager = new VerticalFieldManager(
Manager.NO_VERTICAL_SCROLL | Manager.NO_VERTICAL_SCROLLBAR) {
public void paintBackground(Graphics g) {
g.clear();
int color = g.getColor();
g.setColor(Color.BLACK);
g.fillRect(0, 0, Display.getWidth(), Display.getHeight());
g.setColor(color);
}
protected void sublayout(int maxWidth, int maxHeight) {
/*super.sublayout(maxWidth, maxHeight);
XYRect extent = getExtent();
int width = Math.max(extent.width, Display.getWidth());
int height = Math.max(extent.height, Display.getHeight());
setExtent(width, height);*/
Field titleField = getMyTitleField();
int titleFieldHeight = 0;
if(titleField != null){
titleFieldHeight = titleField.getHeight();
}
int displayWidth = Display.getWidth();
int displayHeight = Display.getHeight();
super.sublayout(displayWidth, displayHeight - titleFieldHeight);
setExtent(displayWidth, displayHeight - titleFieldHeight);
}
};
container = new VerticalFieldManager(Manager.VERTICAL_SCROLL
| Manager.VERTICAL_SCROLLBAR);
internalManager.add(container);
super.add(internalManager);
}
public void add(Field field) {
container.add(field);
}
private Field getMyTitleField() {
Manager delegate = getDelegate();
Field titleField = null;
try{
titleField = delegate.getField(0);
}
catch(Exception e){
e.printStackTrace();
}
return titleField;
}
}
Here's the Main screen which is actually displayed
public class MyMainScreen extends CustomMainScreen implements FieldChangeListener{
MyApplication _uiApp;
private VerticalFieldManager hfm = new VerticalFieldManager(VerticalFieldManager.FIELD_VCENTER | Manager.FIELD_HCENTER);
public MyMainScreen(){
super("Test Title");
_uiApp = (MyApplication) UiApplication.getUiApplication();
Bitmap myBitmap = Bitmap.getBitmapResource("icImg.png");
BitmapField icImg = new BitmapField(myBitmap, BitmapField.NON_FOCUSABLE);
hfm.add(icImg);
RichTextField rtf = new RichTextField(Field.NON_FOCUSABLE){
public void paint(Graphics graphics){
graphics.setBackgroundColor(Color.BLACK);
graphics.clear();
super.paint(graphics);
}
public int getPreferredHeight(){
return 50;
}
};
hfm.add(rtf);
CustomButton installBtn = new CustomButton("btn_over.png", "btn.png", Field.FOCUSABLE);
installBtn.setChangeListener(this);
hfm.add(installBtn);
add(hfm);
}
public boolean keyChar(char key, int status, int time) {
boolean retval = false;
switch (key) {
case Characters.ESCAPE:
close();
retval = true;
break;
}
return retval;
}
public boolean onClose() {
// exit the application if user chooses to close it from main menu
System.exit(0);
return true;
}
public void fieldChanged(Field field, int context)
{
if (field instanceof CustomButton) {
//go to next screen where we start installing the tones
OtherScreen scr = new OtherScreen();
_uiApp.pushScreen(scr);
}
}
}
This is the custom button class
public class CustomButton extends Field {
private Bitmap _currentPicture;
private Bitmap _onPicture;
private Bitmap _offPicture;
CustomButton (String onImage, String offImage, long style){
super(style);
_offPicture = Bitmap.getBitmapResource(offImage);
_onPicture = Bitmap.getBitmapResource(onImage);
_currentPicture = _onPicture;
}
public int getPreferredHeight(){
return 45;
}
public int getPreferredWidth(){
return 170;
}
protected void onFocus(int direction){
_currentPicture = _offPicture;
invalidate();
}
protected void onUnfocus(){
_currentPicture = _onPicture;
invalidate();
}
protected void layout(int width, int height) {
setExtent(Math.min( width, getPreferredWidth()), Math.min( height, getPreferredHeight()));
}
protected void paint(Graphics graphics) {
graphics.setBackgroundColor(Color.BLACK);
graphics.clear();
graphics.fillRect(0, 0, getWidth(), getHeight());
graphics.drawBitmap(0, 0, getWidth(), getHeight(), _currentPicture, 0, 0);
}
protected boolean navigationClick(int status, int time){
fieldChangeNotify(1);
return true;
}
}
