如何将滚动视图中的所有内容转换为位图? [英] How to convert all content in a scrollview to a bitmap?

问题描述

我使用下面的代码进行转换，但似乎只能获取显示屏幕中的内容，无法获取显示屏幕中的内容.

I use below code to convert, but it seems can only get the content in the display screen and can not get the content not in the display screen.

有没有办法让所有内容甚至脱离滚动?

Is there a way to get all the content even out of scroll?

Bitmap viewBitmap = Bitmap.createBitmap(mScrollView.getWidth(),mScrollView.getHeight(),Bitmap.Config.ARGB_8888);  
Canvas canvas = new Canvas(viewBitmap); 
mScrollView.draw(canvas);

推荐答案

我们可以使用如下所示的代码将 scrollView 的所有内容转换为位图图像

We can convert all the contents of a scrollView to a bitmap image using the code shown below

private void takeScreenShot() 
{
    View u = ((Activity) mContext).findViewById(R.id.scroll);

    HorizontalScrollView z = (HorizontalScrollView) ((Activity) mContext).findViewById(R.id.scroll);
    int totalHeight = z.getChildAt(0).getHeight();
    int totalWidth = z.getChildAt(0).getWidth();

    Bitmap b = getBitmapFromView(u,totalHeight,totalWidth);             

    //Save bitmap
    String extr = Environment.getExternalStorageDirectory()+"/Folder/";
    String fileName = "report.jpg";
    File myPath = new File(extr, fileName);
    FileOutputStream fos = null;
    try {
        fos = new FileOutputStream(myPath);
        b.compress(Bitmap.CompressFormat.JPEG, 100, fos);
        fos.flush();
        fos.close();
        MediaStore.Images.Media.insertImage(mContext.getContentResolver(), b, "Screen", "screen");
    }catch (FileNotFoundException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (Exception e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

}

public Bitmap getBitmapFromView(View view, int totalHeight, int totalWidth) {

    Bitmap returnedBitmap = Bitmap.createBitmap(totalWidth,totalHeight , Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(returnedBitmap);
    Drawable bgDrawable = view.getBackground();
    if (bgDrawable != null)
        bgDrawable.draw(canvas);
    else
        canvas.drawColor(Color.WHITE);
    view.draw(canvas);
    return returnedBitmap;
}

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