Getting mobile screen dimensions

Question

Hi all,
I'm developing a game which is to be played on two mobiles. I use the Canvas class to display the playing field. Both mobiles need to decide on the screen size that both mobiles can use, e.g. find the smallest size displayable in both mobiles.
I use getHeight() and getWidth() in the canvas objec MyCanvas:
    public MyCanvas(MyGame theGame, MyData theData, Font theFont) {
         myGame = theGame;
        myData = theData;
        font   = theFont;
        // Get dimensions of the screen
        height = this.getHeight();      
        width  = this.getWidth();
        myData.setFieldDimension(width, height);But if I ask to print the dimensions using:
System.out.println (" myCanvas.constructor, read height=" + height + " and width = " + width + ".");        I get:
myCanvas.constructor, read height=0 and width = 0.
Anyone know why I do not get the requested screen dimensions?
TIA,
Maik

Answer 1

Hi,
I appreciate the effort you both put into my problem, but your advices contradicts each other.
I set my code back to the original situation, like:
    public MyCanvas(MyGame theGame, MyData theData, Font theFont) {
         myGame = theGame;
        myData = theData;
        font   = theFont;
        // Let Server start
        isServer = true;
        // Get dimensions of the screen
        height = getHeight();      
        width  = getWidth();
        myData.setFieldDimension(width, height);
System.out.println ("myCanvas.constructor, set height=" + height + " and width = " + width + ".");       
        // Set width of the rackets
        racketWidth = width/QUOTIENT;
System.out.println ("myCanvas.setScreenDimensions, set rackets to; " + racketWidth);       
    }with the result:
myCanvas.constructor, set height=0 and width = 0.
myCanvas.setScreenDimensions, set rackets to; 0I even tried waiting until the canvas is shown by using Canvas.isShown(). But no luck in that department.
Anyone have an insight I can use?
Maik