private int measureContentWidth(android.widget.ListAdapter adapter)
{
// Menus don't tend to be long, so this is more sane than it looks.
int width = 0;
android.view.View itemView = null;
int itemType = 0;
int widthMeasureSpec = android.view.View.MeasureSpec.makeMeasureSpec(0, android.view.View
.MeasureSpec.UNSPECIFIED);
int heightMeasureSpec = android.view.View.MeasureSpec.makeMeasureSpec(0, android.view.View
.MeasureSpec.UNSPECIFIED);
int count = adapter.getCount();
{
for (int i = 0; i < count; i++)
{
int positionType = adapter.getItemViewType(i);
if (positionType != itemType)
{
itemType = positionType;
itemView = null;
}
if (mMeasureParent == null)
{
mMeasureParent = new android.widget.FrameLayout(mContext);
}
itemView = adapter.getView(i, itemView, mMeasureParent);
itemView.measure(widthMeasureSpec, heightMeasureSpec);
width = System.Math.Max(width, itemView.getMeasuredWidth());
}
}
return width;
}
internal virtual int measureContentWidth(android.widget.SpinnerAdapter adapter, android.graphics.drawable.Drawable
background)
{
if (adapter == null)
{
return 0;
}
int width = 0;
android.view.View itemView = null;
int itemType = 0;
int widthMeasureSpec = android.view.View.MeasureSpec.makeMeasureSpec(0, android.view.View
.MeasureSpec.UNSPECIFIED);
int heightMeasureSpec = android.view.View.MeasureSpec.makeMeasureSpec(0, android.view.View
.MeasureSpec.UNSPECIFIED);
// Make sure the number of items we'll measure is capped. If it's a huge data set
// with wildly varying sizes, oh well.
int start = System.Math.Max(0, getSelectedItemPosition());
int end = System.Math.Min(adapter.getCount(), start + MAX_ITEMS_MEASURED);
int count = end - start;
start = System.Math.Max(0, start - (MAX_ITEMS_MEASURED - count));
{
for (int i = start; i < end; i++)
{
int positionType = adapter.getItemViewType(i);
if (positionType != itemType)
{
itemType = positionType;
itemView = null;
}
itemView = adapter.getView(i, itemView, this);
if (itemView.getLayoutParams() == null)
{
itemView.setLayoutParams(new android.view.ViewGroup.LayoutParams(android.view.ViewGroup
.LayoutParams.WRAP_CONTENT, android.view.ViewGroup.LayoutParams.WRAP_CONTENT));
}
itemView.measure(widthMeasureSpec, heightMeasureSpec);
width = System.Math.Max(width, itemView.getMeasuredWidth());
}
}
// Add background padding to measured width
if (background != null)
{
background.getPadding(mTempRect);
width += mTempRect.left + mTempRect.right;
}
return width;
}
public override void setAdapter(android.widget.ListAdapter adapter)
{
if (mAdapter != null && mDataSetObserver != null)
{
mAdapter.unregisterDataSetObserver(mDataSetObserver);
}
resetList();
mRecycler.clear();
mAdapter = adapter;
mOldSelectedPosition = android.widget.AdapterView.INVALID_POSITION;
mOldSelectedRowId = android.widget.AdapterView.INVALID_ROW_ID;
// AbsListView#setAdapter will update choice mode states.
base.setAdapter(adapter);
if (mAdapter != null)
{
mOldItemCount = mItemCount;
mItemCount = mAdapter.getCount();
mDataChanged = true;
checkFocus();
mDataSetObserver = new android.widget.AbsListView.AdapterDataSetObserver(this);
mAdapter.registerDataSetObserver(mDataSetObserver);
mRecycler.setViewTypeCount(mAdapter.getViewTypeCount());
int position;
if (mStackFromBottom)
{
position = lookForSelectablePosition(mItemCount - 1, false);
}
else
{
position = lookForSelectablePosition(0, true);
}
setSelectedPositionInt(position);
setNextSelectedPositionInt(position);
checkSelectionChanged();
}
else
{
checkFocus();
// Nothing selected
checkSelectionChanged();
}
requestLayout();
}
