安卓：创建具有SurfaceView内容的位图 [英] Android: creating a Bitmap with SurfaceView content

问题描述

我怕已经有不幸的回答这个问题，但为了以防万一......我使用SurfaceView做一些与位图（灯光和颜色修改），图像处理和我需要导入修改位图（即SurfaceView的内容）的新位图，这样我可以将其保存为图像文件。

I'm afraid to already have the unfortunate answer to this question but just in case... I'm using a SurfaceView to do some image processing with bitmaps (lights and colors modifications) and I would need to import the modified bitmap (i.e. the content of the SurfaceView) in a new bitmap so that I can save it as an image file.

我一直在环顾四周，似乎有可能得到View.getDrawingCache（）位图，但它不与SurfaceView工作。我得到的是一个空的位图。

I've been looking around and it seems that it's possible to get a bitmap from View.getDrawingCache() but it doesn't work with SurfaceView. All I get is an empty bitmap.

有没有什么解决办法？

感谢

推荐答案

你能绘制SurfaceView到多数民众赞成背靠一个位图一个帆布？

Can you draw your SurfaceView onto a Canvas that's backed by a Bitmap?

    // be sure to call the createBitmap that returns a mutable Bitmap
    Bitmap b = Bitmap.createBitmap(100, 100, Bitmap.Config.ARGB_8888); 
    Canvas c = new Canvas(b);
    yourSurfaceView.draw(c);

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