解决方法
Here’s一个完整的例子似乎可以完成您想要做的大部分工作.似乎唯一需要做的更改是创建一个新的ImageView并将位图复制到其中.为此,您需要将类MyDragListener的onDrag()方法更改为如下所示:
case DragEvent.ACTION_DROP: // Dropped,reassign View to ViewGroup View view = (View) event.getLocalState(); //ViewGroup owner = (ViewGroup) view.getParent(); // Removed //owner.removeView(view); // Removed LinearLayout container = (LinearLayout) v; // Added the following to copy the old view's bitmap to a new ImageView: ImageView oldView = (ImageView) view; ImageView newView = new ImageView(getApplicationContext()); newView.setimageBitmap(((BitmapDrawable) oldView.getDrawable()).getBitmap()); container.addView(newView); // Changed to add new view instead view.setVisibility(View.VISIBLE); break;