Java Code Examples for android.support.v7.widget.RecyclerView#NO_ID

/**
 * generate viewtype by component
 *
 * @param component
 * @return
 */
private int generateViewType(WXComponent component) {
  long id;
  try {
    id = Integer.parseInt(component.getDomObject().getRef());
    String type = component.getDomObject().getAttrs().getScope();

    if (!TextUtils.isEmpty(type)) {
      if (mRefToViewType == null) {
        mRefToViewType = new ArrayMap<>();
      }
      if (!mRefToViewType.containsKey(type)) {
        mRefToViewType.put(type, id);
      }
      id = mRefToViewType.get(type);

    }
  } catch (RuntimeException e) {
    WXLogUtils.eTag(TAG, e);
    id = RecyclerView.NO_ID;
    WXLogUtils.e(TAG, "getItemViewType: NO ID, this will crash the whole render system of WXListRecyclerView");
  }
  return (int) id;
}
 

/**
 * Return the child component type. The type is defined by scopeValue in .we file.
 *
 * @param position the position of the child component.
 * @return the type of certain component.
 */
@Override
public int getItemViewType(int position) {
    long id;
    try {
        id = Integer.parseInt(getChild(position).getDomObject().ref);
        String type = mChildren.get(position).getDomObject().attr.getScope();

        if (!TextUtils.isEmpty(type)) {
            if (mRefToViewType == null) {
                mRefToViewType = new HashMap<>();
            }
            if (!mRefToViewType.containsKey(type)) {
                mRefToViewType.put(type, id);
            }
            id = mRefToViewType.get(type);

        }
    } catch (RuntimeException e) {
        WXLogUtils.e(TAG, WXLogUtils.getStackTrace(e));
        id = RecyclerView.NO_ID;
        WXLogUtils.e(TAG, "getItemViewType: NO ID, this will crash the whole render system of WXListRecyclerView");

    }
    return (int) id;
}
 

@Override
public long getItemId(int position) {
  long id;
  try {
    id = Long.parseLong(getChild(position).getDomObject().getRef());
  } catch (RuntimeException e) {
    WXLogUtils.e(TAG, WXLogUtils.getStackTrace(e));
    id = RecyclerView.NO_ID;
  }
  return id;
}
 

@Override
public void onClick(View v) {
    int index = getAdapterPosition();
    if (onItemClickListener != null && index != RecyclerView.NO_ID) {
        onItemClickListener.onItemClick(adapter.itemAt(index));
    }
}
 

@Override
public long getItemId(int position) {
    ShieldDisplayNode displayNode = getDisplayNode(position);
    if (displayNode != null && displayNode.stableid != null) {
        if (nodeIdIndex.containsValue(displayNode.stableid)) {
            return nodeIdIndex.getIndex(displayNode.stableid);
        } else {
            nodeIdIndex.putValue(displayNode.stableid);
            return nodeIdIndex.getIndex(displayNode.stableid);
        }
    }
    return RecyclerView.NO_ID;
}
 

@Override
public long getItemId(int position) {
    final DataModel m = getItemAt(position);
    if (m == null) {
        return RecyclerView.NO_ID;
    }
    return m.id().hashCode();
}
 

@Override
public long getItemId(int position) {
  long id;
  try {
    id = Long.parseLong(getChild(position).getDomObject().getRef());
  } catch (RuntimeException e) {
    WXLogUtils.e(TAG, WXLogUtils.getStackTrace(e));
    id = RecyclerView.NO_ID;
  }
  return id;
}
 

@Override
public long getItemId(int position) {
    if (hasStableIds()) {
        if (cursor != null && cursor.moveToPosition(position)) {
            return cursor.get(idProperty);
        }
        return RecyclerView.NO_ID;
    }
    return super.getItemId(position);
}
 

public final void performScrollToStableId(long stableId) {
    if (stableId != RecyclerView.NO_ID) {
        int position = -1;
        for (int i = 0; i < mAdapter.getItemCount(); i++) {
            if (mAdapter.getItemId(i) == stableId) {
                position = i;
                break;
            }
        }
        if (position >= 0) {
            scrollToPosition(position);
            onScrolledToStableId(stableId, position);
        }
    }
}
 

@Override
public long getItemId(int position) {
    if (!hasStableIds()) return RecyclerView.NO_ID;

    Pair<Date, TimedItem> pair = getItemAt(position);
    return pair.second == null ? getStableIdFromDate(pair.first) : pair.second.getStableId();
}
 

@Override
public long getItemId(int position) {
    if (!hasStableIds()) return RecyclerView.NO_ID;

    Pair<Date, TimedItem> pair = getItemAt(position);
    return pair.second == null ? getStableIdFromDate(pair.first) : pair.second.getStableId();
}
 

@Override public long getItemId(int position) {
	try {
		return data.getJSONObject(position).getJSONObject("id").getString("$t").hashCode();
	} catch (JSONException e) {
		return RecyclerView.NO_ID;
	}
}
 

@Override
    public int getItemViewType(int position) {
        final long stableId = getItemId(position);
        return stableId != RecyclerView.NO_ID && stableId == mExpandedId
//                position == mExpandedPosition
                ? VIEW_TYPE_EXPANDED : VIEW_TYPE_COLLAPSED;
    }
 

public boolean expand(int position) {
        if (position == RecyclerView.NO_POSITION)
            return false;
        final long stableId = getItemId(position);
        if (stableId == RecyclerView.NO_ID || mExpandedId == stableId)
            return false;
        mExpandedId = stableId;
        // If we can call this, the item is in view, so we don't need to scroll to it?
//        mScrollHandler.smoothScrollTo(position);
        if (mExpandedPosition >= 0) {
            // Collapse this position first. getItemViewType() will be called
            // in onCreateViewHolder() to verify which ViewHolder to create
            // for the position.
            notifyItemChanged(mExpandedPosition);
        }
        mExpandedPosition = position;
        notifyItemChanged(position);
        return true;

        // This would be my alternative solution. But we're keeping Google's
        // because the stable ID *could* hold up better for orientation changes
        // than the position? I.e. when saving instance state we save the id.
//        int oldExpandedPosition = mExpandedPosition;
//        mExpandedPosition = position;
//        if (oldExpandedPosition >= 0) {
//            notifyItemChanged(oldExpandedPosition);
//        }
//        notifyItemChanged(mExpandedPosition);
    }
 

@Override
public void onLoadFinished(Loader<C> loader, C data) {
    mAdapter.swapCursor(data);
    if (hasEmptyView() && mEmptyView != null) {
        // TODO: Last I checked after a fresh install, this worked fine.
        // However, previous attempts (without fresh installs) didn't hide the empty view
        // upon an item being added. Verify this is no longer the case.
        mEmptyView.setVisibility(mAdapter.getItemCount() == 0 ? View.VISIBLE : View.GONE);
    }
    // This may have been a requery due to content change. If the change
    // was an insertion, scroll to the last modified alarm.
    performScrollToStableId(mScrollToStableId);
    mScrollToStableId = RecyclerView.NO_ID;
}
 

protected long getItemId(@NonNull final T item, final int position) {
    return RecyclerView.NO_ID;
}
 

public void collapse(int position) {
    mExpandedId = RecyclerView.NO_ID;
    mExpandedPosition = RecyclerView.NO_POSITION;
    notifyItemChanged(position);
}
 

@Override
public long getItemId(int position) {
    return isLoadingRow(position) ? RecyclerView.NO_ID : wrappedAdapter.getItemId(position);
}
 

public long getItemId() {
    return RecyclerView.NO_ID;
}
 

/**
 * Returns the stable ID for the {@code index}-th item to present the data. Called only if stable
 * IDs are enabled with {@link RepositoryAdapter#setHasStableIds
 * RepositoryAdapter.setHasStableIds(true)}, and therefore this method is optional with a default
 * implementation of returning {@link RecyclerView#NO_ID}. If stable IDs are enabled, this ID and
 * the item's {@linkplain #getLayoutResId layout resource ID} should together uniquely identify
 * this item in the whole {@link RecyclerView} throughout all changes.
 *
 * @param index The item index between 0 (incl.) and {@link #getItemCount} (excl.).
 */
public long getItemId(@NonNull final T data, final int index) {
  return RecyclerView.NO_ID;
}