java - BufferedImage.getRGB 不返回数组

Question

我使用方法 BufferedImage.getRGB(...) 从 BufferedImage 获取 int 数组，但是当我尝试访问数组中的那些 int 时，我收到 ArrayIndexOutOfBounds 异常。我想要存储这些值的 int 数组的长度似乎为 0，即使看起来图像已正确加载。我哪里做错了？

代码如下:

import java.awt.image.BufferedImage;
import java.io.IOException;
import javax.imageio.ImageIO;

public class SpriteSheet {

public String path;
public int width, height;
public int[] pixels;

public SpriteSheet(String path){
    BufferedImage image = null;     
    try {
        image = ImageIO.read(SpriteSheet.class.getResourceAsStream(path));
    } catch (IOException e) {
        e.printStackTrace();
    }

    if (image == null){
        return;
    }


    this.path = path;
    this.width = image.getWidth();
    this.width = image.getHeight();

    pixels = image.getRGB(0, 0, width, height, pixels, 0, width);

    for (int i = 0; i < pixels.length; i++){
        pixels[i] = (pixels[i] & 0xff)/64;          // remove alpha channel
    }

    for (int i = 0; i < 8; i++){
        System.out.println(pixels[i]);
    }
}

}

当我尝试显示 int 的值时，ArrayIndexOutOfBounds 在最后一个 for 循环中抛出。

Answer 1

改变

this.width = image.getWidth();
this.width = image.getHeight();

至

this.width = image.getWidth();
this.height = image.getHeight(); // set height properly

<小时/>

改变

for (int i = 0; i < 8; i++) {

至

for (int i = 0; i < pixels.length; i++) {