Android GridView avec des catégories?

probablement ce code va vous aider. C'est SectionedGridRecyclerViewAdapter, le résultat ressemble à ceci:

OriginalL'auteur girlOnSledge

Vous pouvez modifier l'habitude listview adaptateur pour revenir à une des grilles à chaque ligne voir ici

public GenericModelAdapter(Context context, int textViewResourceId, List<Map<String, List<Object>>> items, Map<String, String> sectionHeaderTitles, int numberOfCols, View.OnClickListener mItemClickListener){
super(context, textViewResourceId, items);
this.items = items;
this.numberOfCols = numberOfCols;
layoutInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
this.mItemClickListener = mItemClickListener;
this.sectionHeaderTitles = sectionHeaderTitles;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
if(isHeaderPosition(position)){
convertView = layoutInflater.inflate(R.layout.grid_header_view, null);
TextView headerText = (TextView)convertView.findViewById(R.id.headerText);
String section = getItemTypeAtPosition(position);
headerText.setText(getHeaderForSection(section));
return convertView;
}else{
LinearLayout row = (LinearLayout)layoutInflater.inflate(R.layout.row_item, null);
Map<String, List<Object>> map = getItem(position);
List<Object> list = map.get(getItemTypeAtPosition(position));
for (int i = 0; i < numberOfCols; i++){
FrameLayout grid = (FrameLayout)layoutInflater.inflate(R.layout.grid_item, row, false);
ImageView imageView;
if (i < list.size()){
GenericModel model = (GenericModel)list.get(i);
if (grid != null){
imageView = (ImageView)grid.findViewWithTag("image");
imageView.setBackgroundResource(model.getImageResource());
TextView textView = (TextView)grid.findViewWithTag("subHeader");
textView.setText(model.getHeader());
grid.setTag(R.id.row, position);
grid.setTag(R.id.col, i);
grid.setOnClickListener(mItemClickListener);
}
}else{
if (grid != null){
grid.setVisibility(View.INVISIBLE);
grid.setOnClickListener(null);
}
}
row.addView(grid);
}
return row;
}
}
@Override
public int getCount() {
int totalItems = 0;
for (Map<String, List<Object>> map : items){
Set<String> set = map.keySet();
for(String key : set){
//calculate the number of rows each set homogeneous grid would occupy
List<Object> l = map.get(key);
int rows = l.size() % numberOfCols == 0 ? l.size() / numberOfCols : (l.size() / numberOfCols) + 1;
//insert the header position
if (rows > 0){
headerPositions.add(String.valueOf(totalItems));
offsetForItemTypeMap.put(key, totalItems);
itemTypePositionsMap.put(key, totalItems + "," + (totalItems + rows) );
totalItems += 1; //header view takes up one position
}
totalItems+= rows;
}
}
return totalItems;
}
@Override
public Map<String, List<Object>> getItem(int position) {
if (!isHeaderPosition(position)){
String itemType = getItemTypeAtPosition(position);
List<Object> list = null;
for (Map<String, List<Object>> map : items) {
if (map.containsKey(itemType)){
list = map.get(itemType);
break;
}
}
if (list != null){
int offset = position - getOffsetForItemType(itemType);
//remove header position
offset -= 1;
int low = offset * numberOfCols;
int high = low + numberOfCols  < list.size() ? (low + numberOfCols) : list.size();
List<Object> subList = list.subList(low, high);
Map<String, List<Object>> subListMap = new HashMap<String, List<Object>>();
subListMap.put(itemType, subList);
return subListMap;
}
}
return null;
}
public String getItemTypeAtPosition(int position){
String itemType = "Unknown";
Set<String> set = itemTypePositionsMap.keySet();
for(String key : set){
String[] bounds = itemTypePositionsMap.get(key).split(",");
int lowerBound = Integer.valueOf(bounds[0]);
int upperBoundary = Integer.valueOf(bounds[1]);
if (position >= lowerBound && position <= upperBoundary){
itemType = key;
break;
}
}
return itemType;
}
public int getOffsetForItemType(String itemType){
return offsetForItemTypeMap.get(itemType);
}
public boolean isHeaderPosition(int position){
return headerPositions.contains(String.valueOf(position));
}
private String getHeaderForSection(String section){
if (sectionHeaderTitles != null){
return sectionHeaderTitles.get(section);
}else{
return section;
}
}

OriginalL'auteur korosmatick