/**
* 調節圖像明暗的方法，start和 end 的值 在0-255之間，
* 比如,0-16就會讓圖像變得很暗，0-255保持不變
*/
public static Image lightenessRGB(Image image, int start, int end) {
??? // System.out.println("reverseRGB IN");
??? int width = image.getWidth();
??? int height = image.getHeight();
??? // 獲得圖像的ARGB數據,存儲在rawInt里
??? int[] raw = null;
??? try {
??????? raw = new int[width * height];
??????? image.getRGB(raw, 0, width, 0, 0, width, height);
??????? int len = raw.length;
??????? // 開始循環，獲得圖像里每個像素的顏色，然后處理
??????? for (int i = 0; i < len; i++) {
??????????? // 獲得像素的顏色
??????????? int color = raw[i];
??????????? // System.out.println(Integer.toHexString(color));
??????????? // 獲得alpha
??????????? int alpha = 0xFF;
??????????? // System.out.println(Integer.toHexString(alpha));
??????????? // 獲得紅色
??????????? int red = (color & 0x00FF0000) >> 16;
??????????? // System.out.println(Integer.toHexString(red));
??????????? // 獲得綠色
??????????? int green = (color & 0x0000FF00) >> 8;
??????????? // System.out.println(Integer.toHexString(green));
??????????? // 獲得藍色
??????????? int blue = (color & 0x000000FF);
??????????? // System.out.println(Integer.toHexString(blue));
??????????? // 網上找到的算法
??????????? // 生成新顏色
??????????? red = start + end * red / 255;
??????????? green = start + end * green / 255;
??????????? blue = start + end * blue / 255;
??????????? // 生成新顏色
??????????? // System.out.println(Integer.toHexString((alpha << 24)+ (red <<
??????????? // 16)+(green << ));
??????????? color = (alpha << 24) + (red << 16) + (green << + blue;
??????????? raw[i] = color;
??????? }
??????? // System.out.println("blendRGB OUT");
??????? return Image.createRGBImage(raw, width, height, true);

??? } catch (Error e) {
??????? // e.printStackTrace();
??????? ImageAlbum.showAlert("圖像尺寸太大,不能完成此操作.");
??????? return image;
??? } catch (Exception e) {
??????? e.printStackTrace();
??????? return image;
??? } finally {
??????? raw = null;
??? }
}

如何在J2ME程序里調節圖像的明