如何转换的滚动视图为位图的所有内容？ [英] How to convert all content in a scrollview to a bitmap?

问题描述

我用低于code转换，但似乎只能得到在显示屏的内容并不能得到内容没有在显示屏幕。

有没有办法让所有的内容甚至开出滚动？

 位图viewBitmap = Bitmap.createBitmap（mScrollView.getWidth（），mScrollView.getHeight（），Bitmap.Config.ARGB_8888）;
帆布油画=新的Canvas（viewBitmap）;
mScrollView.draw（画布）;
 

解决方案

我们可以将滚动视图中的所有内容使用如下

在code转换为位图图像

 私人无效takeScreenShot（）
{
    查看U =（（活动）mContext）.findViewById（R.id.scroll）;

    Horizo​​ntalScrollView Z =（Horizo​​ntalScrollView）（（活动）mContext）.findViewById（R.id.scroll）;
    INT totalHeight = z.getChildAt（0）.getHeight（）;
    INT totalWidth = z.getChildAt（0）.getWidth（）;

    位图B = getBitmapFromView（U，totalHeight，totalWidth）;

    //保存位图
    字符串抽= Environment.getExternalStorageDirectory（）+/文件夹/;
    字符串文件名=report.jpg;
    文件mypath中=新的文件（抽，文件名）;
    FileOutputStream中FOS = NULL;
    尝试 {
        FOS =新的FileOutputStream（mypath中）;
        b.com preSS（Bitmap.Com pressFormat.JPEG，100，FOS）;
        fos.flush（）;
        fos.close（）;
        MediaStore.Images.Media.insertImage（mContext.getContentResolver（），B，屏幕，屏幕）;
    }赶上（FileNotFoundException异常E）{
        // TODO自动生成的catch块
        e.printStackTrace（）;
    }赶上（例外五）{
        // TODO自动生成的catch块
        e.printStackTrace（）;
    }

}

公共位图getBitmapFromView（查看视图，诠释totalHeight，诠释totalWidth）{

    位图returnedBitmap = Bitmap.createBitmap（totalWidth，totalHeight，Bitmap.Config.ARGB_8888）;
    帆布油画=新的Canvas（returnedBitmap）;
    可绘制bgDrawable = view.getBackground（）;
    如果（bgDrawable！= NULL）
        bgDrawable.draw（画布）;
    其他
        canvas.drawColor（Color.WHITE）;
    view.draw（画布）;
    返回returnedBitmap;
}
 

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.

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);

解决方案

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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