I have a problem wtih a program.
The program logic is like this..........
from a class which extends midlet class i create object of
a class(say canobj(word)) which extends canvas class by
passing a string.
the next statement is display.setCurrent(canobj);
Everything is fine but the paint(Graphics g) method is not
executed. What may the problem. please suggest me the
answer.
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Answer Posted / shelly
Hey,
check out the following code. See if u get any clue from
this. Your display needs to be initialised first..hope ur
doin tat in ur code.. unless u do tat ur paint wudn't be
called at all. try to display a form instead of a canvas and
see if display is causing the problem. hope this was helpful
to u.
public class Mainscreen extends MIDlet implements
CommandListener{
Display display;
public Mainscreen(){
display = Display.getDisplay(this);
setcommandListener(this);
}
public void startApp(){
Form f = new Form("ShowCanvas"){
f.addCommand(Command.OK);
f.setcommandListener(this);
display.setcurrent(f);
}
}
public void DestroyApp(boolean t){
notifyDestroyed();
}
public void pauseApp(){
}
public void commandAction(Command c ,Displayable d){
if(c==Command.OK){
showDetails();
}
}
}
public void showDetails() {
Canvas canvas = new Canvas() {
protected void paint(Graphics g) {
g.setColor(255, 255, 255);
g.fillRect(0, 0, getWidth(), getHeight());
g.setColor(0, 0, 0);
g.setFont(font_med);
g.drawString("HI anonymous",10, 0, 0);
}
};
canvas.addCommand(Commands.Back);
canvas.setCommandListener(this);
display.setcurrent(canvas);
}
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