截屏 for ListView

`
public static Bitmap getWholeListViewItemsToBitmap(ListView listview) {

    ListAdapter adapter  = listview.getAdapter();
    int allitemsheight   = 0;
    List<Bitmap> bmps    = new ArrayList<Bitmap>();
    int firstPosition = listview.getFirstVisiblePosition();
    int lastPosition = listview.getLastVisiblePosition();
    for (int i = firstPosition; i < lastPosition; 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);

    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;
    }


    return bigbitmap;
}`

The issue names no repository files, tests, or entry points; it only provides a Java Android ListView bitmap snippet. First inspect the blog repository structure and surrounding issue context to determine whether this is meant as a post, correction, or implementation request. Confirm the desired output and acceptance criteria before making changes.