int数组到BufferedImage

Question

我正在使用Robot类打印屏幕,我将BufferedImage转换为int数组.然后我想将int数组转换回bufferedimage,但这会产生错误.这是我的代码:

Dimension screen = Toolkit.getDefaultToolkit().getScreenSize();
BufferedImage printscreen = robot.createScreenCapture(new Rectangle(screen));
int[] pixels = ((DataBufferInt) printscreen.getRaster().getDataBuffer()).getData();

BufferedImage image = new BufferedImage(screen.width, screen.height, BufferedImage.TYPE_INT_RGB);
WritableRaster raster = (WritableRaster) image.getRaster();
raster.setPixels(0, 0, screen.width, screen.height, pixels);

但我得到错误:ArrayIndexOutOfBoundsException: 2073600但为什么？

我在这一行得到了例外:

raster.setPixels(0, 0, screen.width, screen.height, pixels);

编辑:如果我将第二个bufferedimage类型更改为TYPE_BYTE_GRAY,它正在工作.

Answer 1

int[] bitMasks = new int[]{0xFF0000, 0xFF00, 0xFF, 0xFF000000};
SinglePixelPackedSampleModel sm = new SinglePixelPackedSampleModel(
        DataBuffer.TYPE_INT, width, height, bitMasks);
DataBufferInt db = new DataBufferInt(pixels, pixels.length);
WritableRaster wr = Raster.createWritableRaster(sm, db, new Point());
BufferedImage image = new BufferedImage(ColorModel.getRGBdefault(), wr, false, null);

Answer 2

变成：

getRaster().getPixels(0, 0, screen.width, screen.height, pixels)

它有效！无论如何，谢谢你的帮助