Java Image类代码示例

import javax.microedition.lcdui.Image; //导入依赖的package包/类
private Image getCategoryImage(String id) {
	Image image = null;
	String path;

	if(id.equals("Family"))
		path = "/family.png";
	else if(id.equals("Work"))
		path = "/work.png";
	else
		path = "/school.png";

	try {
		image = Image.createImage(path);
	} catch (IOException e) {
		e.printStackTrace();
	}		
	return image;
}
 

import javax.microedition.lcdui.Image; //导入依赖的package包/类
public IAnswerData processImage(Image image)
        throws ImageProcessingException {
    MonochromeBitmapSource source = new LCDUIImageMonochromeBitmapSource(
            image);
    Reader reader = new QRCodeReader();
    Hashtable hints = new Hashtable();
    // hints.put(DecodeHintType.TRY_HARDER, Boolean.TRUE);

    try {
        Result result = reader.decode(source, hints);
        if ((result != null) && (result.getText() != null)) {
            String scannedCode = result.getText();
            return new StringData(scannedCode);
        } else {
            throw new ImageProcessingException("Barcode scanning failed");
        }
    } catch (ReaderException re) {
        throw new ImageProcessingException("Barcode scanning failed");
    }
}
 

import javax.microedition.lcdui.Image; //导入依赖的package包/类
private Image getListRowImage(int priority){
	Image image = null;
	String path;
	if (priority < 3)
		path = "/low.png";
	else if (priority < 7)
		path = "/normal.png";
	else
		path = "/important.png";		
	
	try {
		image = Image.createImage(path);
	} catch (IOException e) {
		e.printStackTrace();
	}
	return image;
}
 

import javax.microedition.lcdui.Image; //导入依赖的package包/类
public void setImage(final Image image) {
	activity.post(new Runnable() {
		public void run() {
			if (image == null) {
				imageView.setVisibility(GONE);
				imageView.setImageBitmap(null);
			} else {
				imageView.setVisibility(VISIBLE);
				if (image.isMutable()) {
					imageView.setImageBitmap(((AndroidMutableImage) image).getBitmap());
				} else {
					imageView.setImageBitmap(((AndroidImmutableImage) image).getBitmap());
				}
			}
		}
	});
}
 

import javax.microedition.lcdui.Image; //导入依赖的package包/类
public Image createRGBImage(int[] rgb, int width, int height, boolean processAlpha) {
	if (rgb == null)
		throw new NullPointerException();
	if (width <= 0 || height <= 0)
		throw new IllegalArgumentException();
	
	// TODO processAlpha is not handled natively, check whether we need to create copy of rgb
	int[] newrgb = rgb;
	if (!processAlpha) {
		newrgb = new int[rgb.length];
		for (int i = 0; i < rgb.length; i++) {
			newrgb[i] = (0x00ffffff & rgb[i]) | 0xff000000;
		}
	}
	return new AndroidImmutableImage(Bitmap.createBitmap(newrgb, width, height, Bitmap.Config.ARGB_8888));
}
 

import javax.microedition.lcdui.Image; //导入依赖的package包/类
/**
 * ���������ʼ��
 * @param score ����
 * @throws IOException
 */
public void init(int score) throws IOException
{
	/*��Ϸ����:42,23
	gameover:42,38
	������:38,58
	����ͼƬ:45,107*/
	gameovertip=Image.createImage("/gameovertip.GIF");
	endtip=Image.createImage("/endtip.GIF");
	scorebg=Image.createImage("/scorebg.GIF");
	gameoverbg=Image.createImage("/gameoverbg.GIF");
	
	Graphics gra=super.getGraphics();
	gra.setColor(255, 255, 255);
	gra.fillRect(0, 0, sw, sh);
	gra.drawImage(endtip, 42, 23,Graphics.LEFT|Graphics.TOP);
	gra.drawImage(gameovertip, 42, 38,Graphics.LEFT|Graphics.TOP);
	gra.drawImage(scorebg, 38, 58,Graphics.LEFT|Graphics.TOP);
	gra.drawImage(gameoverbg, 45, 107,Graphics.LEFT|Graphics.TOP);
	flushGraphics();
	repaint();
	super.ShowScore(score);
	System.out.println("��������������");
}
 

import javax.microedition.lcdui.Image; //导入依赖的package包/类
public static ImageItem getImageItem(FormEntryPrompt fep,int height,int width) {
    String IaltText;

    IaltText = fep.getShortText();
    Image im = ImageUtils.getImage(fep.getImageText());
    if(im!=null){

        //scale
        int[] newDimension = ImageUtils.getNewDimensions(im, height, width);

        if(newDimension[0] != height || newDimension[1] != width) {
            im = ImageUtils.resizeImage(im, newDimension[1], newDimension[0]);
        }

        ImageItem imItem = new ImageItem(null,im, ImageItem.LAYOUT_CENTER | ImageItem.LAYOUT_VCENTER, IaltText);
        imItem.setLayout(Item.LAYOUT_CENTER);
        return imItem;
    }else{
        return null;
    }

}
 

import javax.microedition.lcdui.Image; //导入依赖的package包/类
private void raiseAlert() {
    if(alertTitle != null || msg != null) {
        Runnable r = new Runnable() {
            String at = alertTitle;
            String m = msg;
            Image alIm = alertImage;
            String aURI = audioURI;
            long time = new Date().getTime();


            public void run() {
                J2MEDisplay.showError(at, m, alIm);
                if(aURI != null) {
                    MediaUtils.playAudio(aURI);
                }
            }

        };
        new HandledThread(r).start();
        alertTitle = null;
        msg = null;
        alertImage = null;
        audioURI = null;
    }
}
 

import javax.microedition.lcdui.Image; //导入依赖的package包/类
/**
 * Used for scaling an image.  Checks to see if an image is bigger than the
 * provided dimensions, and provides new dimensions such that the image
 * scales to fit within the dimensions given. If the image is smaller (in both width and height)
 * than the given dimensions, returns the original image dimensions.
 * @param source image
 * @return int array [height, width]
 */
public static int[] getNewDimensions(Image im, int height, int width){
  double scalef = im.getHeight()*1.0/im.getWidth();
  int w = 1;
  int h = 1;
  if(im.getHeight() > height && im.getWidth() <= width){ //height is overbounds
      h = height;
      w = (int)Math.floor(h/scalef);
  }else if (im.getHeight() <= height && im.getWidth() > width){  //width is overbouds
      w = width;
      h = (int)Math.floor(w*scalef);
  }else if (im.getHeight() > height && im.getWidth() > width){ //both are overbounds
      if(height > width){    //screen width is smaller dimension, so reduce im width and scale height
          w = width;
          h = (int)Math.floor(w*scalef);
      }else if(height <= width){ //reduce height and scale width
          h = height;
          w = (int)Math.floor(h/scalef);
      }
  }else{
      h = im.getHeight();
      w = im.getWidth();
  }
      int[] dim = {h,w};
      return dim;
}
 

import javax.microedition.lcdui.Image; //导入依赖的package包/类
CBitmap(Image img) {
    
    Larg = img.getWidth();
    Alt = img.getHeight();

    raw = new int[Larg*Alt];

    img.getRGB(raw, 0, Larg, 0, 0, Larg, Alt);
    
    PMCor = new Cor[Alt][Larg];

    for (int y = 0; y < Alt; y++) {
        for (int x = 0; x < Larg; x++) {
            PMCor[y][x] = new Cor(raw[x+y*Larg]);
        }
    }
}
 

import javax.microedition.lcdui.Image; //导入依赖的package包/类
/**
 * Constrói um CTonsCinza a partir de uma Image
 */
CTonsCinza(Image img) {
   
    Larg = img.getWidth();
    Alt = img.getHeight();
    
    TonsCinza = new int[Alt][Larg];
    raw = new int[Larg*Alt];

    img.getRGB(raw, 0, Larg, 0, 0, Larg, Alt);
    
    for (int y = 0; y < Alt; y++) {
        for (int x = 0; x < Larg; x++) {
            pixel=raw[x+y*Larg];
            
            azul=pixel & 0x0000FF;
            verde=(pixel & 0xFF00) >> 8;
            vermelho=(pixel & 0xFF0000) >> 16;
            pixel=azul*11+verde*59+vermelho*30;
            pixel*=0.01;
            TonsCinza[y][x] = pixel;
        }
    }
}
 

import javax.microedition.lcdui.Image; //导入依赖的package包/类
/**
 * @see javax.microedition.lcdui.CustomItem#paint(javax.microedition.lcdui.Graphics, int, int)
 */
protected void paint(Graphics g, int w, int h) {
	// Draw the title text
	Util.drawStringCenteredAndTruncated(g, "Rating:", font, 0, 0, w, font.getHeight(),
			Graphics.TOP | Graphics.LEFT );
	for(int i = 0; i < zones.length; i++) {
		GestureInteractiveZone zone = zones[i];
		Image image = null;
		// Determine whether a full or empty star needs to be drawn
		if(i < rating){
			image = starImgFilled;
		} else{
			image = starImgEmpty;
		}
		// Draw a star image
		Util.drawImageCentered(g, image, zone.getX(), zone.getY(),
				zone.getWidth(), zone.getHeight());
	}
}
 

import javax.microedition.lcdui.Image; //导入依赖的package包/类
/**
 * Retorna uma Image gerada a partir do CTonsCinza
 */
Image SaveImage() {
    
    int[] rawRGB = new int[Larg*Alt];
  
    int ponteiro = 0;
    
    for (int y = 0; y < Alt; y++) {
        for (int x = 0; x < Larg; x++) {
            rawRGB[ponteiro] = TonsCinza[y][x];
            rawRGB[ponteiro] = TonsCinza[y][x];
            rawRGB[ponteiro++] = TonsCinza[y][x];
        }
    }
    
    Image img = Image.createRGBImage(rawRGB, Larg, Alt, false);
   
    return img;
}
 

import javax.microedition.lcdui.Image; //导入依赖的package包/类
public Screen(Display display) {
    super();
    this.setFullScreenMode(true);
    this.parentDisplay = display;

    updateOrientation();

    try {
        // Create background image
        this.background = Image.createImage("midlets/blogwriter/images/Background.png");
    } catch (IOException e) {
        this.parentDisplay.setCurrent(
                new Alert("Cannot create graphics."), this);
    }
    VirtualKeyboard.setVisibilityListener(this);
}
 

import javax.microedition.lcdui.Image; //导入依赖的package包/类
public Image loadImage(int zoom, int x, int y, int mapSource, boolean goDown, Vector obs) {
	String key = mapSource + "/" + zoom + "/" + x + "/" + y;
	synchronized(this.keys) {
		if(this.isEnabled && this.keys.containsKey(key)) {
			int id = Integer.parseInt((String)this.keys.get(key));
			try {
				byte[] buf = rsImages.getRecord(id);
				Image img = Image.createImage(buf, 0, buf.length);
				return img;
			} catch(RecordStoreException ex) {
				ex.printStackTrace();
				return this.successor.loadImage(zoom, x, y, mapSource, goDown, obs);
			}
		} else if(goDown) {
			if(obs == null) {
				obs = new Vector();
			}
			obs.addElement(this);
			return this.successor.loadImage(zoom, x, y, mapSource, goDown, obs);
		} else {
			return null;
		}
	}
}