Android：在ScrollView中为所有视图截图

我尝试在ScrollView中为所有视图截图，我的ScrollView有溢出屏幕的内容，因此可以进行滚动，如何确保截图包含屏幕上不可见的元素

我一直在使用以下代码：

scroll_pp=(ScrollView)polis.findViewById(R.id.scroll_pp);
int totalHeight = scroll_pp.getChildAt(0).getHeight();
int totalWidth = scroll_pp.getChildAt(0).getWidth();
 Bitmap b= MethodSupport.loadBitmapFromView(scroll_pp, totalWidth, totalHeight);
String extr = Environment.getExternalStorageDirectory().toString() +   File.separator + "Folder";
                    String fileName = "Test.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(getActivity().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 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;
    }

创建了图像文件，但它只显示黑屏，而不是我想要的视图，所以我的代码有问题吗？请问有人能帮我吗

更新

在遵循@113408的答案后，我得到了错误，这是我的日志：

注释：08-27 10:40:57.555:E/AndroidRuntime4957:at id.co.ajsmssig.espaj.PemegangPolis.onClickPemegangPolis.java:1546 是指位图b=Bitmap.createBitmapu.getDrawingCache

试试这个：

Bitmap bitmap = Bitmap.createBitmap(scrollView.getChildAt(0).getWidth(), scrollView.getChildAt(0).getHeight(), Bitmap.Config.ARGB_8888);
Canvas c = new Canvas(bitmap);
scrollView.getChildAt(0).draw(c);

---

您可以获取scrollview的任何子布局的屏幕截图。

您可以使用此代码获取完整scrollview的屏幕截图。相同的代码可以适用于所有类型的视图

代码：

        View u = findViewById(R.id.scroll_pp);
        u.setDrawingCacheEnabled(true);                                                
        ScrollView scroll_pp = (ScrollView) findViewById(R.id.scroll_pp);
        int totalHeight = scroll_pp.getChildAt(0).getHeight();
        int totalWidth = scroll_pp.getChildAt(0).getWidth();
        u.layout(0, 0, totalWidth, totalHeight);    
        u.buildDrawingCache(true);
        Bitmap b = Bitmap.createBitmap(u.getDrawingCache());             
        u.setDrawingCacheEnabled(false);

        //Save bitmap
        String extr = Environment.getExternalStorageDirectory().toString() +   File.separator + "Folder";
        String fileName = "Test.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();
        } 

---

它在这一行中为我提供NullPointerException位图b=Bitmap.createBitmapu.getDrawingCache；我在ressource绑定上犯了一个小错误，但我认为您在使用我的代码时替换了它。你能发布日志吗？我只是测试了一下，似乎问题出在孩子的高度和宽度上对不起，我检查了很多次，但我都弄不清楚。如果你找到了一个可行的解决方案，就发布它。也许将来会有人需要它

        View u = findViewById(R.id.scroll_pp);
        u.setDrawingCacheEnabled(true);                                                
        ScrollView scroll_pp = (ScrollView) findViewById(R.id.scroll_pp);
        int totalHeight = scroll_pp.getChildAt(0).getHeight();
        int totalWidth = scroll_pp.getChildAt(0).getWidth();
        u.layout(0, 0, totalWidth, totalHeight);    
        u.buildDrawingCache(true);
        Bitmap b = Bitmap.createBitmap(u.getDrawingCache());             
        u.setDrawingCacheEnabled(false);

        //Save bitmap
        String extr = Environment.getExternalStorageDirectory().toString() +   File.separator + "Folder";
        String fileName = "Test.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();
        }