返回值时不兼容的类型 [英] Incompatible types when returning value

问题描述

我希望在地图上显示带有绘制线条的图像，并为图像中的每个部分创建单独的图像（多条连接线条）。我写了这段代码：

I want to display an image with drawn lines on a map, and separate images made for every single section in the image (several connected lines). I have written this code:

public BufferedImage getLineImage() {
    BufferedImage lineImage = null;
    BufferedImage lineImage1[]=null;
    int i=0;

    if(image != null) {
        lineImage1[i] = new BufferedImage(image.getWidth(), image.getHeight(),                               image.getType());

        lineImage  = new BufferedImage(image.getWidth(), image.getHeight(), image.getType());

        Graphics2D g1 = lineImage1[i].createGraphics();
        Graphics2D g = lineImage.createGraphics();

        g.setColor(Color.WHITE);
        g.setStroke(new BasicStroke(5, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND));

        g1.setColor(Color.WHITE);
        g1.setStroke(new BasicStroke(5, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND));

        for(Section section : observeTraffic) {
            section.paintTags(g1);
            i++;
        }
        for(Section section : observeTraffic) {
            section.paintTags(g);
        }
    }

    return lineImage;
    return lineImage1;
}

但在最后一行我收到错误：不兼容的类型

but in the last row I get error: Incompatible types

java：不兼容类型
required：java.awt.image.BufferedImage
found：java.awt.image.BufferedImage []

java: incompatible types required: java.awt.image.BufferedImage found: java.awt.image.BufferedImage[]

有人可以帮帮我吗？

谢谢

推荐答案

lineImage1 定义为 BufferedImage lineImage1 [] ，这是一个BufferedImages数组。该方法的返回值是 BufferedImage 。

lineImage1 is defined as BufferedImage lineImage1[], which is an array of BufferedImages. The return value of the method is BufferedImage.

您要么将返回类型更改为 BufferedImage s，或只返回一个 BufferedImage 。

You either want to change the return type to an array of BufferedImages, or only return a single BufferedImage.

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