В моем приложении я пытаюсь передать список обрабатываемых массивов адаптеру секционированного представления переработчика, но в методе добавления, где мы добавляем разделы, это дает мне требуемую строковую ошибку:
Это мой класс:
public class HostBean implements Parcelable {
public static final String EXTRA = ActivityMain.PKG + ".extra";
public static final String EXTRA_POSITION = ActivityMain.PKG + ".extra_position";
public static final String EXTRA_HOST = ActivityMain.PKG + ".extra_host";
public static final String EXTRA_TIMEOUT = ActivityMain.PKG + ".network.extra_timeout";
public static final String EXTRA_HOSTNAME = ActivityMain.PKG + ".extra_hostname";
public static final String EXTRA_BANNERS = ActivityMain.PKG + ".extra_banners";
public static final String EXTRA_PORTSO = ActivityMain.PKG + ".extra_ports_o";
public static final String EXTRA_PORTSC = ActivityMain.PKG + ".extra_ports_c";
public static final String EXTRA_SERVICES = ActivityMain.PKG + ".extra_services";
public static final int TYPE_GATEWAY = 0;
public static final int TYPE_COMPUTER = 1;
public int deviceType = TYPE_COMPUTER;
public int isAlive = 1;
public int position = 0;
public int responseTime = 0; // ms
public String ipAddress = null;
public String hostname = null;
public String hostsection = null;
public String hardwareAddress = NetInfo.NOMAC;
public String nicVendor = "Unknown";
public String os = "Unknown";
public HashMap<Integer, String> services = null;
public HashMap<Integer, String> banners = null;
public ArrayList<Integer> portsOpen = null;
public ArrayList<Integer> portsClosed = null;
public HostBean() {
// New object
}
public HostBean(Parcel in) {
// Object from parcel
readFromParcel(in);
}
public int describeContents() {
return 0;
}
public void writeToParcel(Parcel dest, int flags) {
dest.writeInt(deviceType);
dest.writeInt(isAlive);
dest.writeString(ipAddress);
dest.writeString(hostname);
dest.writeString( hostsection );
dest.writeString(hardwareAddress);
dest.writeString(nicVendor);
dest.writeString(os);
dest.writeInt(responseTime);
dest.writeInt(position);
dest.writeMap(services);
dest.writeMap(banners);
dest.writeList(portsOpen);
dest.writeList(portsClosed);
}
private void readFromParcel(Parcel in) {
deviceType = in.readInt();
isAlive = in.readInt();
ipAddress = in.readString();
hostname = in.readString();
hardwareAddress = in.readString();
nicVendor = in.readString();
os = in.readString();
hostsection=in.readString();
responseTime = in.readInt();
position = in.readInt();
services = in.readHashMap(null);
banners = in.readHashMap(null);
portsOpen = in.readArrayList(Integer.class.getClassLoader());
portsClosed = in.readArrayList(Integer.class.getClassLoader());
}
@SuppressWarnings("unchecked")
public static final Creator CREATOR = new Creator() {
public HostBean createFromParcel(Parcel in) {
return new HostBean(in);
}
public HostBean[] newArray(int size) {
return new HostBean[size];
}
};
}
Это мой простой класс адаптеров:
public class SimpleAdapter extends RecyclerView.Adapter<SimpleAdapter.SimpleViewHolder> {
private final Context mContext;
private ArrayList<HostBean> mData;
final HostBean host = new HostBean();
public void add(HostBean s,int position) {
position = position == -1 ? getItemCount() : position;
host.hostsection=s;
mData.add(position,s); //at this line of code i'm getting error
notifyItemInserted(position);
}
public void remove(int position){
if (position < getItemCount() ) {
mData.remove(position);
notifyItemRemoved(position);
}
}
public static class SimpleViewHolder extends RecyclerView.ViewHolder {
public final TextView mac;
public final TextView vendor;
public final TextView ip;
public SimpleViewHolder(View view) {
super(view);
ip = (TextView) view.findViewById(R.id.ip);
mac = (TextView) view.findViewById(R.id.mac);
vendor = (TextView) view.findViewById(R.id.vendor);
}
}
public SimpleAdapter(Context context, List<HostBean> data) {
mContext = context;
if (data != null)
mData = new ArrayList<HostBean>();
}
public SimpleViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
final View view = LayoutInflater.from(mContext).inflate(R.layout.list_host, parent, false);
return new SimpleViewHolder(view);
}
@Override
public void onBindViewHolder(SimpleViewHolder holder, final int position) {
holder.ip.setText( (CharSequence) mData.get(position) );
holder.mac.setText( "" );
holder.vendor.setText( "" );
}
@Override
public int getItemCount() {
return mData.size();
}
}
Это мой простой секционированный класс адаптеров для повторных проверок:
public class SimpleSectionedRecyclerViewAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
private final Context mContext;
private static final int SECTION_TYPE = 0;
private boolean mValid = true;
private int mSectionResourceId;
private int mTextResourceId;
private LayoutInflater mLayoutInflater;
private RecyclerView.Adapter mBaseAdapter;
private SparseArray<Section> mSections = new SparseArray<Section>();
public SimpleSectionedRecyclerViewAdapter(Context context, int sectionResourceId, int textResourceId,
RecyclerView.Adapter baseAdapter) {
mLayoutInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
mSectionResourceId = sectionResourceId;
mTextResourceId = textResourceId;
mBaseAdapter = baseAdapter;
mContext = context;
mBaseAdapter.registerAdapterDataObserver(new RecyclerView.AdapterDataObserver() {
@Override
public void onChanged() {
mValid = mBaseAdapter.getItemCount()>0;
notifyDataSetChanged();
}
@Override
public void onItemRangeChanged(int positionStart, int itemCount) {
mValid = mBaseAdapter.getItemCount()>0;
notifyItemRangeChanged(positionStart, itemCount);
}
@Override
public void onItemRangeInserted(int positionStart, int itemCount) {
mValid = mBaseAdapter.getItemCount()>0;
notifyItemRangeInserted(positionStart, itemCount);
}
@Override
public void onItemRangeRemoved(int positionStart, int itemCount) {
mValid = mBaseAdapter.getItemCount()>0;
notifyItemRangeRemoved(positionStart, itemCount);
}
});
}
public static class SectionViewHolder extends RecyclerView.ViewHolder {
public TextView title;
public SectionViewHolder(View view, int mTextResourceid) {
super(view);
title = (TextView) view.findViewById(mTextResourceid);
}
}
@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int typeView) {
if (typeView == SECTION_TYPE) {
final View view = LayoutInflater.from(mContext).inflate(mSectionResourceId, parent, false);
return new SectionViewHolder(view,mTextResourceId);
}else{
return mBaseAdapter.onCreateViewHolder(parent, typeView -1);
}
}
@Override
public void onBindViewHolder(RecyclerView.ViewHolder sectionViewHolder, int position) {
if (isSectionHeaderPosition(position)) {
((SectionViewHolder)sectionViewHolder).title.setText(mSections.get(position).title);
}else{
mBaseAdapter.onBindViewHolder(sectionViewHolder,sectionedPositionToPosition(position));
}
}
@Override
public int getItemViewType(int position) {
return isSectionHeaderPosition(position)
? SECTION_TYPE
: mBaseAdapter.getItemViewType(sectionedPositionToPosition(position)) +1 ;
}
public static class Section {
int firstPosition;
int sectionedPosition;
CharSequence title;
public Section(int firstPosition, CharSequence title) {
this.firstPosition = firstPosition;
this.title = title;
}
public CharSequence getTitle() {
return title;
}
}
public void setSections(Section[] sections) {
mSections.clear();
Arrays.sort(sections, new Comparator<Section>() {
@Override
public int compare(Section o, Section o1) {
return (o.firstPosition == o1.firstPosition)
? 0
: ((o.firstPosition < o1.firstPosition) ? -1 : 1);
}
});
int offset = 0; // offset positions for the headers we're adding
for (Section section : sections) {
section.sectionedPosition = section.firstPosition + offset;
mSections.append(section.sectionedPosition, section);
++offset;
}
notifyDataSetChanged();
}
public int positionToSectionedPosition(int position) {
int offset = 0;
for (int i = 0; i < mSections.size(); i++) {
if (mSections.valueAt(i).firstPosition > position) {
break;
}
++offset;
}
return position + offset;
}
public int sectionedPositionToPosition(int sectionedPosition) {
if (isSectionHeaderPosition(sectionedPosition)) {
return RecyclerView.NO_POSITION;
}
int offset = 0;
for (int i = 0; i < mSections.size(); i++) {
if (mSections.valueAt(i).sectionedPosition > sectionedPosition) {
break;
}
--offset;
}
return sectionedPosition + offset;
}
public boolean isSectionHeaderPosition(int position) {
return mSections.get(position) != null;
}
@Override
public long getItemId(int position) {
return isSectionHeaderPosition(position)
? Integer.MAX_VALUE - mSections.indexOfKey(position)
: mBaseAdapter.getItemId(sectionedPositionToPosition(position));
}
@Override
public int getItemCount() {
return (mValid ? mBaseAdapter.getItemCount() + mSections.size() : 0);
}
}
Вот как инициализировать массив:
hosts = new ArrayList<HostBean>();
Это мой код активности для установки адаптера в утилитаре просмотра:
RecyclerView list =findViewById(R.id.output);
list.setHasFixedSize( true );
list.setLayoutManager( new LinearLayoutManager( this ) );
list.addItemDecoration(new DividerItemDecoration(this,LinearLayoutManager.VERTICAL));
SimpleAdapter mAdapter = new SimpleAdapter(this,hosts);
List<SimpleSectionedRecyclerViewAdapter.Section> sections =
new ArrayList<SimpleSectionedRecyclerViewAdapter.Section>();
//Sections
sections.add(new SimpleSectionedRecyclerViewAdapter.Section(0,"Know Devices"));
sections.add(new SimpleSectionedRecyclerViewAdapter.Section(5,"Unknown Devices"));
SimpleSectionedRecyclerViewAdapter.Section[] dummy = new SimpleSectionedRecyclerViewAdapter.Section[sections.size()];
SimpleSectionedRecyclerViewAdapter mSectionedAdapter = new
SimpleSectionedRecyclerViewAdapter(this,R.layout.section,R.id.section_text,mAdapter);
mSectionedAdapter.setSections(sections.toArray(dummy));
list.setAdapter( mSectionedAdapter );