在 libgdx 中截屏

问题描述

我有一个应用程序，我想在其中截取游戏屏幕的屏幕截图并将其保存为图像并上传到 Facebook.我正在使用 Libgdx，我的重点是 android.

I have an application in which i want to take the screenshot of the game screen and save it as an image and upload to Facebook. I am using Libgdx and my focus is android.

谁能帮助我如何以编程方式截取游戏屏幕并将其保存为图像??

Can anyone help me that how to take screenshot of the game screen programmatically and save it as an image ??

推荐答案

现在相当容易.Libgdx 提供了一个示例，可以在这里找到.

It is now fairly easy. Libgdx provides an example, which can be found here.

我必须添加一条语句才能使其正常工作.图片无法直接保存到 /screenshot1.png.只需添加 Gdx.files.getLocalStoragePath().

I had to add one statement to get it working. The image could not be saved directly to /screenshot1.png. Simply prepend Gdx.files.getLocalStoragePath().

源代码:

public class ScreenshotFactory {

    private static int counter = 1;
    public static void saveScreenshot(){
        try{
            FileHandle fh;
            do{
                fh = new FileHandle(Gdx.files.getLocalStoragePath() + "screenshot" + counter++ + ".png");
            }while (fh.exists());
            Pixmap pixmap = getScreenshot(0, 0, Gdx.graphics.getWidth(), Gdx.graphics.getHeight(), false);
            PixmapIO.writePNG(fh, pixmap);
            pixmap.dispose();
        }catch (Exception e){           
        }
    }

    private static Pixmap getScreenshot(int x, int y, int w, int h, boolean yDown){
        final Pixmap pixmap = ScreenUtils.getFrameBufferPixmap(x, y, w, h);

        if (yDown) {
            // Flip the pixmap upside down
            ByteBuffer pixels = pixmap.getPixels();
            int numBytes = w * h * 4;
            byte[] lines = new byte[numBytes];
            int numBytesPerLine = w * 4;
            for (int i = 0; i < h; i++) {
                pixels.position((h - i - 1) * numBytesPerLine);
                pixels.get(lines, i * numBytesPerLine, numBytesPerLine);
            }
            pixels.clear();
            pixels.put(lines);
        }

        return pixmap;
    }
}

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