主要是操作下面的工具类
public class GraphicsUtil {
public static final int SHIFT_RED_TO_GREEN = 0;
public static final int SHIFT_RED_TO_BLUE = 1;
public static final int SHIFT_GREEN_TO_BLUE = 2;
public static final int SHIFT_GREEN_TO_RED = 3;
public static final int SHIFT_BLUE_TO_RED = 4;
public static final int SHIFT_BLUE_TO_GREEN = 5;
public static int[] flipImageColor(Image source, int shiftType) {
// we start by getting the image data into an int array – the number
// of 32-bit ints is equal to the width multiplied by the height
int[] rgbData = new int[(source.getWidth() * source.getHeight())];
source.getRGB(rgbData, 0, source.getWidth(), 0, 0, source.getWidth(),
source.getHeight());
// now go through every pixel and adjust it’s color
for (int i = 0; i < rgbData.length; i++) {
int p = rgbData[i];
// split out the different byte components of the pixel by
// applying
// a mask so we only get what we need, then shift it to make it
// a normal number we can play around with
int a = ((p & 0xff000000) >> 24);
int r = ((p & 0x00ff0000) >> 16);
int g = ((p & 0x0000ff00) >> 8);
int b = ((p & 0x000000ff) >> 0);
int ba = a, br = r, bb = b, bg = g; // backup copies
// flip the colors around according to the operation required
switch (shiftType) {
case SHIFT_RED_TO_GREEN:
g = r;
r = bg;
break;
case SHIFT_RED_TO_BLUE:
b = r;
r = bb;
break;
case SHIFT_GREEN_TO_BLUE:
g = b;
b = bg;
break;
case SHIFT_GREEN_TO_RED:
g = r;
r = bg;
break;
case SHIFT_BLUE_TO_RED:
b = r;
r = bb;
break;
case SHIFT_BLUE_TO_GREEN:
b = g;
g = bb;
break;
}
// shift all our values back in
rgbData[i] = (a << 24) | (r << 16) | (g << 8) | b;
}
return rgbData;
}
}
调用：
int[] targetImage= GraphicsUtil.flipImageColor(srcImage, GraphicsUtil.SHIFT_RED_TO_BLUE);
g.drawRGB(targetImage，0，srcImage.getWidth(), 30, srcImage.getHeight() + 40, srcImage.getWidth(),srcImage.getHeight(), true);