@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
ListAdapter adapter = getAdapter();
if (adapter != null && adapter instanceof HeaderViewGridAdapter) {
((HeaderViewGridAdapter) adapter).setNumColumns(getNumColumnsCompatible());
((HeaderViewGridAdapter) adapter).setRowHeight(getRowHeight());
}
}
@Override
public void setAdapter(ListAdapter adapter) {
if (mHeaderViewInfos.size() > 0) {
HeaderViewGridAdapter hadapter = new HeaderViewGridAdapter(mHeaderViewInfos, adapter);
int numColumns = getNumColumns();
if (numColumns > 1) {
hadapter.setNumColumns(numColumns);
}
super.setAdapter(hadapter);
} else {
super.setAdapter(adapter);
}
}
@Override
public void setAdapter(ListAdapter adapter) {
mOriginalAdapter = adapter;
if (mHeaderViewInfos.size() > 0 || mFooterViewInfos.size() > 0) {
HeaderViewGridAdapter headerViewGridAdapter =
new HeaderViewGridAdapter(mHeaderViewInfos, mFooterViewInfos, adapter);
int numColumns = getNumColumnsCompatible();
if (numColumns > 1) {
headerViewGridAdapter.setNumColumns(numColumns);
}
headerViewGridAdapter.setRowHeight(getRowHeight());
super.setAdapter(headerViewGridAdapter);
} else {
super.setAdapter(adapter);
}
}
public void addFooterView(View v, Object data, boolean isSelectable) {
ListAdapter mAdapter = getAdapter();
if (mAdapter != null && !(mAdapter instanceof HeaderViewGridAdapter)) {
throw new IllegalStateException(
"Cannot add header view to grid -- setAdapter has already been called.");
}
ViewGroup.LayoutParams lyp = v.getLayoutParams();
FixedViewInfo info = new FixedViewInfo();
FrameLayout fl = new FullWidthFixedViewLayout(getContext());
if (lyp != null) {
v.setLayoutParams(new FrameLayout.LayoutParams(lyp.width, lyp.height));
fl.setLayoutParams(new AbsListView.LayoutParams(lyp.width, lyp.height));
}
fl.addView(v);
info.view = v;
info.viewContainer = fl;
info.data = data;
info.isSelectable = isSelectable;
mFooterViewInfos.add(info);
if (mAdapter != null) {
((HeaderViewGridAdapter) mAdapter).notifyDataSetChanged();
}
}
/**
* Add a fixed view to appear at the top of the grid. If addHeaderView is called more than once,
* the views will appear in the order they were added. Views added using this call can take focus
* if they want.
*
* <p>NOTE: Call this before calling setAdapter. This is so HeaderGridView can wrap the supplied
* cursor with one that will also account for header views.
*
* @param v The view to add.
* @param data Data to associate with this view
* @param isSelectable whether the item is selectable
*/
public void addHeaderView(View v, Object data, boolean isSelectable) {
ListAdapter adapter = getAdapter();
if (adapter != null && !(adapter instanceof HeaderViewGridAdapter)) {
throw new IllegalStateException(
"Cannot add header view to grid -- setAdapter has already been called.");
}
ViewGroup.LayoutParams lyp = v.getLayoutParams();
FixedViewInfo info = new FixedViewInfo();
FrameLayout fl = new FullWidthFixedViewLayout(getContext());
if (lyp != null) {
v.setLayoutParams(new FrameLayout.LayoutParams(lyp.width, lyp.height));
fl.setLayoutParams(new LayoutParams(lyp.width, lyp.height));
}
fl.addView(v);
info.view = v;
info.viewContainer = fl;
info.data = data;
info.isSelectable = isSelectable;
mHeaderViewInfos.add(info);
// in the case of re-adding a header view, or adding one later onCallBackData,
// we need to notify the observer
if (adapter != null) {
((HeaderViewGridAdapter) adapter).notifyDataSetChanged();
}
}
@Override
public void setNumColumns(int numColumns) {
super.setNumColumns(numColumns);
mNumColumns = numColumns;
ListAdapter adapter = getAdapter();
if (adapter != null && adapter instanceof HeaderViewGridAdapter) {
((HeaderViewGridAdapter) adapter).setNumColumns(numColumns);
}
}