Android图片操作-切割

/**
     * 图片切割方法
     * @param bitmap 图片
     * @param xPiece 行
     * @param yPiece 列
     * @return
     */
    public static List<ImagePiece> split(Bitmap bitmap, int xPiece, int yPiece) {

        List<ImagePiece> pieces = new ArrayList<ImagePiece>(xPiece * yPiece);
        int width = bitmap.getWidth();
        int height = bitmap.getHeight();
        int pieceWidth = width / 3;
        int pieceHeight = height / 3;
        for (int i = 0; i < yPiece; i++) {
            for (int j = 0; j < xPiece; j++) {
                ImagePiece piece = new ImagePiece();
                piece.index = j + i * xPiece;
                int xValue = j * pieceWidth;
                int yValue = i * pieceHeight;
                piece.bitmap = Bitmap.createBitmap(bitmap, xValue, yValue,
                        pieceWidth, pieceHeight);
                pieces.add(piece);
            }
        }

        return pieces;
    }

ImagePiece代码

/**
 * 此类保存了一个Bitmap对象和一个标识图片的顺序索引的int变量
 * 
 * @author lenovo
 * 
 */
public class ImagePiece {

    public int index = 0;

    public Bitmap bitmap = null;
}