Tag: Bitmap

BlackBerry AnimatedGIFField

BlackBerry is not support Animated GIF, especially Animated GIF on (Bitmap) Field.
You can extend BitmapField to create your own AnimatedGIFField[1].

public class AnimatedGIFField extends BitmapField
{
    private GIFEncodedImage _image;     //The image to draw.
    private int _currentFrame;          //The current frame in
                                        the animation sequence.
    private int _width;                 //The width of the image
                                        (background frame).
    private int _height;                //The height of the image
                                        (background frame).
    private AnimatorThread _animatorThread;

    public AnimatedGIFField(GIFEncodedImage image)
    {
        this(image, 0);
    }

    public AnimatedGIFField(GIFEncodedImage image, long style)
    {
        //Call super to setup the field with the specified style.
        //The image is passed in as well for the field to
        //configure its required size.
        super(image.getBitmap(), style);

        //Store the image and it's dimensions.
        _image = image;
        _width = image.getWidth();
        _height = image.getHeight();

        //Start the animation thread.
        _animatorThread = new AnimatorThread(this);
        _animatorThread.start();
    }

    protected void paint(Graphics graphics)
    {
        //Call super.paint. This will draw the first background
        //frame and handle any required focus drawing.
        super.paint(graphics);

        //Don't redraw the background if this is the first frame.
        if (_currentFrame != 0)
        {
            //Draw the animation frame.
            graphics.drawImage(_image.getFrameLeft(_currentFrame), _image.getFrameTop(_currentFrame),
                _image.getFrameWidth(_currentFrame), _image.getFrameHeight(_currentFrame), _image, _currentFrame, 0, 0);
        }
    }

    //Stop the animation thread when the screen the field is on is
    //popped off of the display stack.
    protected void onUndisplay()
    {
        _animatorThread.stop();
        super.onUndisplay();
    }


    //A thread to handle the animation.
    private class AnimatorThread extends Thread
    {
        private AnimatedGIFField _theField;
        private boolean _keepGoing = true;
        private int _totalFrames;     //The total number of
                                        frames in the image.
        private int _loopCount;       //The number of times the
                                      animation has looped (completed).
        private int _totalLoops;      //The number of times the animation should loop (set in the image).

        public AnimatorThread(AnimatedGIFField theField)
        {
            _theField = theField;
            _totalFrames = _image.getFrameCount();
            _totalLoops = _image.getIterations();

        }

        public synchronized void stop()
        {
            _keepGoing = false;
        }

        public void run()
        {
            while(_keepGoing)
            {
                //Invalidate the field so that it is redrawn.
                UiApplication.getUiApplication().invokeAndWait(new Runnable()
                {
                    public void run()
                    {
                        _theField.invalidate();
                    }
                });

                try
                {
                    //Sleep for the current frame delay before
                    //the next frame is drawn.
                    sleep(_image.getFrameDelay(_currentFrame) * 10);
                }
                catch (InterruptedException iex)
                {} //Couldn't sleep.

                //Increment the frame.
                ++_currentFrame;

                if (_currentFrame == _totalFrames)
                {
                    //Reset back to frame 0 if we have reached the end.
                    _currentFrame = 0;

                    ++_loopCount;

                    //Check if the animation should continue.
                    if (_loopCount == _totalLoops)
                    {
                        _keepGoing = false;
                    }
                }
            }
        }
    }
}

[1] http://www.blackberry.com/knowledgecenterpublic/livelink.exe/fetch/2000/348583/800332/800505/800345/How_To_-_Display_an_animated_GIF.html?nodeid=1405903&vernum=0


Bitmap.getBitmapResource()

Bitmap.getBitmapResource(String resourceName)

resourceName will be search in every package that declare on the project.

so, even you move your resourceFile from one to another directory, you don’t need to change the String parameter of Bitmap.getBitmapResource()

Eclipse+JDE Plugin 1.0.0.67


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