在为整个布局截图时,只有屏幕上可见的列表项以位图的形式出现

我正在尝试拍摄整个视图的截图,并通过pdf或图像共享它。 这是我的布局视图。

活动xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/mainView"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/White"
    tools:context="com.tally.enjay.tallyandroid.activity.LedgerTransactionHistoryActivity">

    <include
        android:id="@+id/toolbar"
        layout="@layout/toolbar" />

    <RelativeLayout
        android:id="@+id/relativeLayout"
        style="@style/Base.CardView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@+id/toolbar"
        android:background="@color/DateTheme"
        android:elevation="2dp"
        android:padding="10dp">


        <RelativeLayout
            android:id="@+id/relative_date"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content">

            <TextView
                android:id="@+id/current_date"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignParentStart="true"
                android:layout_marginEnd="5dp"
                android:text="01/04/17 - 31/03/18"
                android:textColor="@color/Black"
                android:textSize="14sp"
                android:textStyle="bold"
                tools:ignore="HardcodedText" />

            <TextView
                android:id="@+id/vs"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignParentStart="true"
                android:layout_below="@+id/current_date"
                android:padding="2dp"
                android:text="vs."
                android:textColor="@color/colorGreyshred"
                android:textSize="13sp"
                android:visibility="gone"
                tools:ignore="HardcodedText,RtlSymmetry" />

            <TextView
                android:id="@+id/previous_date"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_below="@id/current_date"
                android:layout_marginStart="1dp"
                android:layout_toEndOf="@+id/vs"
                android:padding="2dp"
                android:text="01/04/16 - 31/03/17"
                android:textColor="@color/colorGreyshred"
                android:textSize="13sp"
                android:visibility="gone"
                tools:ignore="HardcodedText" />


        </RelativeLayout>

    </RelativeLayout>

    <TextView
        android:id="@+id/amount"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@+id/relativeLayout"
        android:layout_marginBottom="10dp"
        android:background="@color/DateTheme"
        android:gravity="center"
        android:padding="5dp"
        android:textColor="?attr/colorPrimary"
        android:textSize="18sp"
        android:textStyle="" />

    <RelativeLayout
        android:id="@+id/table_header"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@id/amount">

        <TextView
            android:id="@+id/header_date"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="5dp"
            android:padding="5dp"
            android:text="Date"
            android:textSize="15sp"
            android:textStyle="bold" />

        <TextView
            android:id="@+id/header_vch"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="25dp"
            android:layout_toEndOf="@id/header_date"
            android:padding="5dp"
            android:text="Vch No. / Vch Type"
            android:textSize="15sp"
            android:textStyle="bold" />

        <TextView
            android:id="@+id/header_amt"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentEnd="true"
            android:padding="5dp"
            android:paddingEnd="50dp"
            android:text="Amount"
            android:textSize="15sp"
            android:textStyle="bold" />

    </RelativeLayout>

    <FrameLayout
        android:id="@+id/empty_view"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:visibility="gone">

        <TextView
            android:id="@+id/ledger_empty_txt"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:text="@string/no_data_available_for_this_ledger"
            android:textSize="15sp" />

    </FrameLayout>

    <android.support.v4.widget.SwipeRefreshLayout
        android:id="@+id/swipe"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/table_header">

        <ListView
            android:id="@+id/list"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@android:color/white" />

    </android.support.v4.widget.SwipeRefreshLayout>

</RelativeLayout>

现在,当我单击工具栏中的共享按钮时,它将打开弹出菜单来共享图像或pdf。关于图像或pdf的选择,我的方法是 shareViaPdfOrImage(字符串选择) 调用,其中选择将包含每个弹出菜单选项的PDF或图像aas字符串。

活动班

     private void shareViaPdfOrImage(String selection) {
            Bitmap bitmap = takeScreenshot();   //method called to take screen shot here is think my issues is happening.
            saveBitmap(bitmap, selection);

        }

       //This whole method is woking fine so i am not expnading it.
        private void saveBitmap(Bitmap myBitmap, String selection) {
            final String dirPath = Environment.getExternalStorageDirectory().getAbsolutePath() + "/myappxyz";

            if (selection.equals("PDF")) {
                createPdf(myBitmap, dirPath);
            } else if (selection.equals("Image")) {
                createImage(myBitmap, dirPath);
            }


        }

 // My issues starts with this method
 private Bitmap takeScreenshot() {
        //View view = getWindow().findViewById(R.id.mainView);
        //  int width = view.getWidth();
        //  int height = view.getHeight();
        RelativeLayout mainView = findViewById(R.id.mainView);
        int childcount = mainView.getChildCount();
        Log.e("childCount", "==>" + childcount);

        ArrayList<Bitmap> bitmaps = new ArrayList<>();
        for (int i = 0; i < childcount; i++) {

            View subview = mainView.getChildAt(i);

            if (subview instanceof SwipeRefreshLayout) {
                Log.e("subview is swipe", "==>" + i);
                bitmaps.add(getWholeListViewItemsToBitmap(listView));

            } else {
                bitmaps.add(Bitmap.createBitmap(subview.getWidth(), subview.getHeight(), Bitmap.Config.ARGB_8888));
            }
            //bitmaps.add(Bitmap.createBitmap(mainView.getChildAt(i).getWidth(), mainView.getChildAt(i).getHeight(), Bitmap.Config.ARGB_8888));


        }



        Bitmap tempbitmap = combineImageIntoOne(bitmaps, mainView);

        Bitmap bitmap = tempbitmap.copy(Bitmap.Config.ARGB_8888, true);

        Canvas canvas = new Canvas(bitmap);
        mainView.layout(0, 0, mainView.getLayoutParams().width, mainView.getLayoutParams().height);
        Drawable bgDrawable = mainView.getBackground();
        if (bgDrawable != null)
            bgDrawable.draw(canvas);
        else
            canvas.drawColor(Color.WHITE);
        mainView.draw(canvas);
        return bitmap;
    }

    private Bitmap combineImageIntoOne(ArrayList<Bitmap> bitmap, RelativeLayout mainView) {
        int w = 0, h = 0;
        for (int i = 0; i < bitmap.size(); i++) {
            if (i < bitmap.size() - 1) {
                w = bitmap.get(i).getWidth() > bitmap.get(i + 1).getWidth() ? bitmap.get(i).getWidth() : bitmap.get(i + 1).getWidth();
            }
            h += bitmap.get(i).getHeight();
        }

        Bitmap temp = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888);
        Canvas canvas = new Canvas(temp);
        int top = 0;
        for (int i = 0; i < bitmap.size(); i++) {
            //Log.d("HTML", "Combine: "+i+"/"+bitmap.size()+1);

            top = (i == 0 ? 0 : top + bitmap.get(i).getHeight());
            canvas.drawBitmap(bitmap.get(i), 0f, top, null);
            // canvas.drawBitmap(bitmap.get(i), new Matrix(), null);
            //canvas.drawBitmap(bitmap.get(i+1), 0, 0, null);
        }
        //canvas.drawColor(Color.WHITE);

        return temp;
    }

  // This method will get all list items screen shot in one bitmap.
  public Bitmap getWholeListViewItemsToBitmap(ListView p_ListView) {
        ListView listview = p_ListView;
        ListAdapter adapter = listview.getAdapter();
        int itemscount = adapter.getCount();
        int allitemsheight = 0;
        List<Bitmap> bmps = new ArrayList<Bitmap>();
        for (int i = 0; i < itemscount; i++) {
            View childView = adapter.getView(i, null, listview);
            childView.measure(
                    View.MeasureSpec.makeMeasureSpec(listview.getWidth(), View.MeasureSpec.EXACTLY),
                    View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED));
            childView.layout(0, 0, childView.getMeasuredWidth(), childView.getMeasuredHeight());
            childView.setDrawingCacheEnabled(true);
            childView.buildDrawingCache();
            bmps.add(childView.getDrawingCache());
            allitemsheight += childView.getMeasuredHeight();
        }
        Bitmap bigbitmap = Bitmap.createBitmap(listview.getMeasuredWidth(), allitemsheight,
                Bitmap.Config.ARGB_8888);
        Canvas bigcanvas = new Canvas(bigbitmap);
        //bigcanvas.drawColor(Color.WHITE);

        Paint paint = new Paint();
        int iHeight = 0;
        for (int i = 0; i < bmps.size(); i++) {
            Bitmap bmp = bmps.get(i);
            bigcanvas.drawBitmap(bmp, 0, iHeight, paint);
            iHeight += bmp.getHeight();
            bmp.recycle();
            bmp = null;
        }
        //Long tsLong = System.currentTimeMillis() / 1000;


        return storeImage(bigbitmap);
    }

    //This method will save bitmap and store it in app data and will return a bitmap to the mani method.
    public Bitmap storeImage(Bitmap imageData) {
        // get path to external storage (SD card)
        final String dirPath = Environment.getExternalStorageDirectory().getAbsolutePath() + "/myappxyz";

        File dir = new File(dirPath);
        if (!dir.exists())
            dir.mkdirs();

        String fileName = "LastSharedImage.jpg";
        File file = new File(dirPath, fileName);
        try {
            FileOutputStream fOut = new FileOutputStream(file);
            imageData.compress(Bitmap.CompressFormat.PNG, 85, fOut);
            fOut.flush();
            fOut.close();

        } catch (Exception e) {
            e.printStackTrace();
        }

        BitmapFactory.Options options = new BitmapFactory.Options();
        options.inPreferredConfig = Bitmap.Config.ARGB_8888;
        Bitmap bitmap = BitmapFactory.decodeFile(file.getAbsolutePath(), options);
        Log.e("AbosolutePath","==>"+file.getAbsolutePath());


        return bitmap;

    }

问题:: 我得到一个最终位图,并将其传递给创建pdf或图像,但最终的结果是,我的位图仅用于当前可见的视图,即使我使用getWholeListViewItemsToBitmap(ListView p\u ListView)方法获得整个列表视图屏幕截图,只需在其中传递一个ListView即可。目前,我得到了屏幕上10个可见项目的屏幕截图,以及相对主视图到相对表布局的布局,然后是一个很长的空白区域,我认为这是由于剩余的列表视图项目在屏幕上不可见,但在列表视图中,即使向下滚动到最后,也会发生这种情况。我尝试了所有方法,但都失败了。

注:: 我在列表视图中有52个列表项,在屏幕截图中只有10-12个列表项可见,当前显示在列表视图中。

要求 ::只需在android端解决此问题,不想使用任何第三方库。