java.lang.IndexOutOfBoundsException: Invalid item position 0(0). Item count:0

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[syusikoku]

@Override public void onMeasure(RecyclerView.Recycler recycler, RecyclerView.State state, int widthSpec, int heightSpec) { if (measuredHeight <= 0 && state.getItemCount() > 0) { // View view = recycler.getViewForPosition(0); View view = recycler.getViewForPosition(0); if (view != null) { measureChild(view, widthSpec, heightSpec); measuredWidth = View.MeasureSpec.getSize(widthSpec); measuredHeight = view.getMeasuredHeight() * getSpanCount(); } } setMeasuredDimension(measuredWidth, measuredHeight); }