将根视图保存到图像时未捕获文本

Question

我正在尝试捕获我 ScrollView 中的所有项目并将其保存为图像。

private void takeScreenShot()
{

    ScrollView z = (ScrollView) findViewById(R.id.scroll_view);
    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(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;
}

生成的图像是 enter image description here

黑色区域应该有一些文字，但没有显示。

如果有人有可行的解决方案，我将不胜感激。

Answer 1

public static Bitmap loadBitmapFromView(View v, int width, int height) {
    Bitmap b = Bitmap.createBitmap(width , height, Bitmap.Config.ARGB_8888);                
    Canvas c = new Canvas(b);
    v.layout(0, 0, v.getLayoutParams().width, v.getLayoutParams().height);
    v.draw(c);
    return b;
}

Just pass ScrollView or it's immediate child view to above function.

试试这个，然后告诉我。希望对您有所帮助！

Answer 2

有时，如果它没有设置任何内容，它会将背景设置为黑色，并且当您创建位图时，它会显示为黑色背景上的黑色文本。

您可以通过在 .XML 文件中添加背景色来解决此问题。请务必为要捕获的视图以及视图中的每个项目添加背景颜色。任何没有设置背景的内容都将显示为黑色背景。

将根视图保存到图像时未捕获文本

Text not captured while saving rootview to image

android

image

scrollview