获取surfaceView的屏幕截图在Android中 [英] Get screenshot of surfaceView in Android

问题描述

在我的应用我认为有一些按钮和SurfaceView。我一定要把这个观点的截图，但在地方SurfaceView的只有黑场。我尝试，我发现计算器的解决方案，但他们不为我工作。

In my application I have view with some buttons and SurfaceView. I must take screenshot of this view, but in place of SurfaceView is only black field. I try solutions which I found on stackoverflow, but they don't work for me.

这是我的code，我usualy采取截图：

This is my code which I usualy take screenshots:

File folder = new File(Environment.getExternalStorageDirectory().getPath() + "/folder");
if (!folder.exists()) {
    folder.mkdir();
}
String path = folder.getAbsolutePath() + "snapshot.png";
File file = new File(path);
file.createNewFile();

View view = this.findViewById(android.R.id.content).getRootView();
view.setDrawingCacheEnabled(true);
Bitmap drawingCache = view.getDrawingCache();
Bitmap bitmap = Bitmap.createBitmap(drawingCache);

FileOutputStream fos = null;
try {
    fos = new FileOutputStream(file);
    bitmap.compress(CompressFormat.PNG, 100, fos);
} finally {
    bitmap.recycle();
    view.setDrawingCacheEnabled(false);
    if (fos != null) {
        try {
            fos.close();
        } catch (IOException e) {
            Log.e(TAG, e.getMessage(), e);
        }
    }
}

也许有人可以提供帮助。

Maybe someone can help.

推荐答案

我找到的解决方案如何使截图（但我不知道这是否是一个正确使用）。在surfaceView我创建方法drawBitmap：

I found solution how to make screenshot (but I don't know if this is a correct use). In surfaceView I created method drawBitmap:

public Bitmap drawBitmap() {
    Bitmap bitmap = Bitmap.createBitmap(getWidth(), getHeight(), Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(bitmap);
    thread.doDraw(canvas);
    return bitmap;
}

在下一步骤余COM preSS的这个位图：

In the next step I compress this bitmap:

 FileOutputStream fos = null;
try {
    fos = new FileOutputStream(file);
    bitmap.compress(CompressFormat.PNG, 100, fos);
} finally {
    bitmap.recycle();
    if (fos != null) {
        try {
            fos.close();
        } catch (IOException e) {
            Log.e(TAG, e.getMessage(), e);
        }
    }
}

这篇关于获取surfaceView的屏幕截图在Android中的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！