Draw dragShadow from layout resource

case : using layout resource file.

Make view and measure, layout. `````java //Inflate shadowView from layout resource file. //No displayed. Has no size. //If you insert true in 3rd param and ViewGroup in 2nd param, this view will be attaching immediately. View shadowView = layoutInflater.inflate(R.layout.item_shadow, null, false); // View.MeasureSpec.UNSPECIFIED is one of the measure mode(=we has no value of exactly measured). //It cause to measure the shadowView size. //So, static layout dimens are ignored. shadowView.measure(View.MeasureSpec.UNSPECIFIED, View.MeasureSpec.UNSPECIFIED); //Position of left,top,right,bottom relative to parent. //Assign a size and position to a view and all of its descendants. shadowView.layout(0, 0, width, height); `````

And insert the shadowView into View.DragShadowBuilder.class constructor param. ```java triggerView.startDragAndDrop(ClipData.newPlainText("", ""), new MyDragShadow(shadowView), null, 0); ```