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Converting Facebook post ID from String to int

I am making a news feed where I retrieve Facebook posts from a specific Facebook page. I retrieve those posts with help of the Facebook Graph API. I have a FeedItem which has an ID (int). The ID is also used to check which item is at the current position (Recyclerview).
The problem is that Facebook gives the posts a String ID. I have no idea how I can possibly convert this so that it will work with my application.
My Adapter:
public class FeedListAdapter extends RecyclerView.Adapter<FeedListAdapter.ViewHolder> {
private ImageLoader imageLoader = AppController.getInstance().getImageLoader();
private List<FeedItem> mFeedItems;
private Context mContext;
public FeedListAdapter(List<FeedItem> pFeedItems, Context pContext) {
this.mFeedItems = pFeedItems;
this.mContext = pContext;
}
/* Create methods for further adapter use.*/
#Override
public ViewHolder onCreateViewHolder(final ViewGroup parent, final int viewType) {
View feedView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.feed_item, parent, false);
return new ViewHolder(feedView);
}
#Override
public void onBindViewHolder(final ViewHolder holder, final int position) {
holder.populateRow(getFeedItem(position));
}
#Override
public long getItemId(int position) {
return mFeedItems.get(position).getId();
}
#Override
public int getItemCount() {
return mFeedItems.size();
}
private FeedItem getFeedItem(int position) {
return mFeedItems.get(position);
}
class ViewHolder extends RecyclerView.ViewHolder implements OnClickListener {
private ImageView mProfilePic;
private TextView mName;
private TextView mTimestamp;
private TextView mTxtStatusMsg;
private FeedImageView mFeedImage;
//initialize the variables
ViewHolder(View view) {
super(view);
mProfilePic = (ImageView) view.findViewById(R.id.feedProfilePic);
mName = (TextView) view.findViewById(R.id.feedName);
mTimestamp = (TextView) view.findViewById(R.id.feedTimestamp);
mTxtStatusMsg = (TextView) view.findViewById(R.id.feedStatusMessage);
mFeedImage = (FeedImageView) view.findViewById(R.id.feedImage);
view.setOnClickListener(this);
}
#Override
public void onClick(View view) {
}
private void populateRow(FeedItem pFeedItem) {
getProfilePic(pFeedItem);
mName.setText(pFeedItem.getName());
mTimestamp.setText(pFeedItem.getTimeStamp());
mTxtStatusMsg.setText(pFeedItem.getStatus());
getStatusImg(pFeedItem);
}
private void getProfilePic(FeedItem pFeedItem) {
imageLoader.get(pFeedItem.getProfilePic(), new ImageListener() {
#Override
public void onResponse(ImageContainer response, boolean arg1) {
if (response.getBitmap() != null) {
// load image into imageview
mProfilePic.setImageBitmap(response.getBitmap());
}
}
#Override
public void onErrorResponse(final VolleyError pVolleyError) {
}
});
}
private void getStatusImg(FeedItem pFeedItem) {
if (pFeedItem.getImage() != null) {
mFeedImage.setImageUrl(pFeedItem.getImage(), imageLoader);
mFeedImage.setVisibility(View.VISIBLE);
mFeedImage
.setResponseObserver(new FeedImageView.ResponseObserver() {
#Override
public void onError() {
}
#Override
public void onSuccess() {
}
});
} else {
mFeedImage.setVisibility(View.GONE);
}
}
}
My FeedFragment:
public class FeedFragment extends android.support.v4.app.Fragment {
private static final String TAG = FeedFragment.class.getSimpleName();
private FeedListAdapter mListAdapter;
private List<FeedItem> mFeedItems;
private RecyclerView mRecyclerView;
private String FACEBOOKURL = "**URL OF MY FB-POSTDATA**";
// newInstance constructor for creating fragment with arguments
public static FeedFragment newInstance() {
FeedFragment fragment = new FeedFragment();
return fragment;
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
// Inflate the layout resource file
View view = getActivity().getLayoutInflater().inflate(R.layout.fragment_feed, container, false);
initRecyclerView(view);
initCache();
return view;
}
#Override
public void onStart() {
super.onStart();
}
#Override
public void onResume() {
super.onResume();
}
private void initRecyclerView(View pView) {
mRecyclerView = (RecyclerView) pView.findViewById(R.id.fragment_feed_recyclerview);
LayoutManager mLayoutManager = new LinearLayoutManager(getActivity());
mRecyclerView.setLayoutManager(mLayoutManager);
mRecyclerView.setHasFixedSize(false);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
mRecyclerView.setNestedScrollingEnabled(true);
}
mFeedItems = new ArrayList<>();
mListAdapter = new FeedListAdapter(mFeedItems, getActivity());
mRecyclerView.setAdapter(mListAdapter);
}
private void initCache() {
// We first check for cached request
Cache cache = AppController.getInstance().getRequestQueue().getCache();
Entry entry = cache.get(FACEBOOKURL);
if (entry != null) {
// fetch the data from cache
try {
String data = new String(entry.data, "UTF-8");
try {
parseJsonFeed(new JSONObject(data));
} catch (JSONException e) {
e.printStackTrace();
}
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
} else {
// making fresh volley request and getting json
JsonObjectRequest jsonReq = new JsonObjectRequest(Method.GET,
FACEBOOKURL, null, new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
VolleyLog.d(TAG, "Response: " + response.toString());
if (response != null) {
parseJsonFeed(response);
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
VolleyLog.d(TAG, "Error: " + error.getMessage());
}
});
// Adding request to volley request queue
AppController.getInstance().addToRequestQueue(jsonReq);
}
}
private void parseJsonFeed(JSONObject response) {
try {
JSONArray feedArray = response.getJSONArray("data");
for (int i = 0; i < feedArray.length(); i++) {
JSONObject feedObj = (JSONObject) feedArray.get(i);
FeedItem item = new FeedItem();
item.setId(Integer.parseInt(feedObj.getString("id")));
item.setName("name of page");
// Image might be null sometimes
String image = feedObj.isNull("full_picture") ? null : feedObj
.getString("full_picture");
item.setImage(image);
// Status message might be null sometimes
String status = feedObj.isNull("message") ? null : feedObj
.getString("message");
item.setStatus(status);
item.setProfilePic("**profile picture url**");
item.setTimeStamp(feedObj.getString("created_time"));
mFeedItems.add(item);
}
// notify data changes to list adapter
mListAdapter.notifyDataSetChanged();
} catch (JSONException e) {
e.printStackTrace();
}
} }
As I said; I have no idea how to handle this and I figured someone here would maybe have an idea on how to convert this, so that I can use the String that the graph api gives me, and use it as an integer.

If the id is all numeric, you should be able to do this: int id = Integer.valueOf(facebookId)
If you have an undescore you can try this:
public int getIdFromString(String postId) {
String finalId;
while (postId.indexOf("_") > 0) {
finalId = postId.substring(0, postId.indexOf("_"));
postId = finalId.concat(postId.substring(postId.indexOf("_") + 1));
}
return Integer.valueOf(postId);
}

If the value is numeric and you want an integer object, do
Integer id = Integer.valueOf(facebookId);
If you want the primitive type int, then do
int id = Integer.parseInt(facebookId);
or
int id = Integer.valueOf(facebookId);

fail to retrieve data to listview - android

[EDIT] I'm new to android development, so please bear with me. I have two java classes named Join Game, extends to AppCompatActivity and HintList,extends to ArrayAdapter<>. This is connected to a database. So maybe its one of the factors?
For the layout of join game, I have a listview
and for the layout of hintlist I have three textview.
The code goes this way
JoinGame
public class JoinGame extends AppCompatActivity {
ListView list;
String[] itemdescription = {};
String[] itemhints = {};
String[] itemlocasyon = {};
ProgressDialog progress;
View view;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_joingame);
Button schan = (Button)findViewById(R.id.tarascan);
schan.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent intent = new Intent(JoinGame.this,ScanActivity.class);
startActivity(intent);
}
});
}
#Override
protected void onStart() {
super.onStart();
progress = new ProgressDialog(this);
progress.setMessage("Connecting...");
progress.setCancelable(false);
progress.show();
RequestFactory.joingameitems(JoinGame.this, RequestFactory.user_id, new RequestCallback<JSONArray>() {
#Override
public void onSuccess(final JSONArray response) {
runOnUiThread(new Runnable() {
#Override
public void run() {
RequestFactory.response = response;
itemdescription = new String[response.length()];
itemhints = new String[response.length()];
itemlocasyon = new String[response.length()];
for (int hl = 0; hl < response.length(); hl++){
try{
itemdescription[hl] = ((String)(response.getJSONObject(hl)).get("description"));
itemhints[hl] = ((String)(response.getJSONObject(hl)).get("hint"));
itemlocasyon[hl] = ((String)(response.getJSONObject(hl)).get("location"));
} catch (JSONException e) {
e.printStackTrace();
}
} ////////// below this is the adapter
final HintList hladapt = new HintList(JoinGame.this,itemdescription,itemlocasyon,itemhints);
list = (ListView)findViewById(R.id.item_hints_and_location);
list.setAdapter(hladapt);
progress.dismiss();
}
});
}
#Override
public void onFailed(final String message) {
runOnUiThread(new Runnable() {
#Override
public void run() {
runOnUiThread(new Runnable() {
#Override
public void run() {
Toast.makeText(JoinGame.this, message, Toast.LENGTH_LONG).show();
progress.dismiss();
}
});
}
});
}
});
}
HintList
public class HintList extends ArrayAdapter<String> {
private final Activity context;
private String[] itemDesc = {};
private String[] itemHints = {};
private String[] itemLocation = {};
public HintList(Activity context,String[] itemDesc,String[] itemhints,String[] itemlocation) {
super(context,R.layout.hints_list);
this.context = context;
this.itemDesc = itemDesc;
itemHints = itemhints;
itemLocation = itemlocation;
}
#Override
public View getView(int position, View view, ViewGroup parent) {
LayoutInflater inflater = context.getLayoutInflater();
View rowView = inflater.inflate(R.layout.hints_list, null, true);
TextView itemDesc2 = (TextView)rowView.findViewById(R.id.itemdescription);
TextView itemHint = (TextView)rowView.findViewById(R.id.itemhint);
TextView itemLocation2 = (TextView)rowView.findViewById(R.id.itemlocation);
itemDesc2.setText(itemDesc[position]);
itemHint.setText(itemHints[position]);
itemLocation2.setText(itemLocation[position]);
return rowView;
}
}
I actually retrieved the data (here)
E/DB: [{"description":"chinese garter","location":"near Tricycle station","hint":"garter plus chinese"},{"description":"isang pinoy game","location":"near ....","hint":"may salitang baka"},{"description":"\"tinik\"","location":"below...","hint":"may salitang tinik"},{"description":"aka Tinubigan","location":"at the back...","hint":"katunog ng pintero"},{"description":"\"knock down the can\"","location":"near...","hint":"gumagamit ng lata"}]
but it doesnt display on my listview
I dont know anymore what I should do.
I actually tried making this (I added view)
final HintList hladapt = new HintList(JoinGame.this,itemdescription,itemlocasyon,itemhints);
list = (ListView)view.findViewById(R.id.item_hints_and_location);
list.setAdapter(hladapt);
progress.dismiss();
but it will only returns an error of java.lang.NullPointerException: Attempt to invoke virtual method

Change this:
View rowView = inflater.inflate(R.layout.hints_list, null, true);
to:
View rowView = inflater.inflate(R.layout.hints_list, parent, false);
Modify your getView() method to:
#Override
public View getView(int position, View view, ViewGroup parent) {
LayoutInflater inflater = context.getLayoutInflater();
View rowView = inflater.inflate(R.layout.hints_list, parent, false);
TextView itemDesc2 = (TextView)rowView.findViewById(R.id.itemdescription);
TextView itemHint = (TextView)rowView.findViewById(R.id.itemhint);
TextView itemLocation2 = (TextView)rowView.findViewById(R.id.itemlocation);
itemDesc2.setText(itemDesc[position]);
itemHint.setText(itemHints[position]);
itemLocation2.setText(itemLocation[position]);
return rowView;
}

try adding getCount
#Override
public int getCount() {
return itemHints.length;
}
Try to change your code to this
public class HintList extends ArrayAdapter<String> {
private final Activity context;
private String[] itemDesc = {};
private String[] itemHints = {};
private String[] itemLocation = {};
private LayoutInflater inflater=null;
public HintList(Activity context,String[] itemDesc,String[] itemhints,String[] itemlocation) {
super(context,R.layout.hints_list);
this.context = context;
this.itemDesc = itemDesc;
itemHints = itemhints;
itemLocation = itemlocation;
inflater = (LayoutInflater)this.context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
#Override
public int getCount() {
return itemHints.length;
}
#Override
public View getView(int position, View view, ViewGroup parent) {
ViewHolder holder;
if (view==null){
view=inflater.inflate(R.layout.hints_list, null, true);
holder = new ViewHolder(view);
view.setTag(holder);
}else {
holder = (ViewHolder) view.getTag();
}
holder.itemDesc2.setText(itemDesc[position]);
holder.itemHint.setText(itemHints[position]);
holder.itemLocation2.setText(itemLocation[position]);
return view;
}
static class ViewHolder{
TextView itemDesc2,itemHint,itemLocation2;
ViewHolder(View view) {
itemDesc2 = (TextView)view.findViewById(R.id.itemdescription);
itemHint = (TextView)view.findViewById(R.id.itemhint);
itemLocation2 = (TextView)view.findViewById(R.id.itemlocation);
}
}
}

My suggestions is create a bean class (DetailsBean), used for setter and getter method, and also the ArrayList (details1).
List<DetailsBean> details1 = new ArrayList<>(); // declare this as global
Then add the bean to below code
public void run() {
RequestFactory.response = response;
itemdescription = new String[response.length()];
itemhints = new String[response.length()];
itemlocasyon = new String[response.length()];
for (int hl = 0; hl < response.length(); hl++){
try{
itemdescription[hl] = ((String)(response.getJSONObject(hl)).get("description"));
itemhints[hl] = ((String)(response.getJSONObject(hl)).get("hint"));
itemlocasyon[hl] = ((String)(response.getJSONObject(hl)).get("location"));
// here the bean
DetailsBean dbean = new DetailsBean(itemDescription, itemhints, itemlocasyon);
details1.add(dbean); // add all the data to details1 ArrayList
HintList hladapt = new HintList(getActivity(), details1);
(ListView)findViewById(R.id.item_hints_and_location);
list.setAdapter(hladapt);
} catch (JSONException e) {
e.printStackTrace();
}
}
Your DetailsBean should looked like this
public class DetailsBean {
private String itemDescription="";
private String itemhints="";
private String itemlocasyon ="";
public DetailsBean(String description, String hints, String itemlocasyon) {
this.itemDescription=description;
.....
}
public void setItemDescription(String itemDescription) {
this.itemDescription = itemDesription;
}
public String getItemDescription() {
return itemDescription;
}
....
}
Then your HintList
public class HintList extends BaseAdapter{
Activity context;
List<DetailsBean> details;
private LayoutInflater mInflater;
public CustomBaseAdapter(Activity context,List<DetailsBean> details) {
this.context = context;
this.details = details;
}
........
}

Add these Override methods in your adapter
#Override
public int getCount() {
return itemHints.length;
}
#Override
public Object getItem(int i) {
return i;
}
#Override
public long getItemId(int i) {
return i;
}

Can't Populate Listview from Database Android with Display Adapter

I have a database with a column named "noteName". What I want is to populate the listView with mySQLiteDatabase. I use a display adapter to help the process.
But the problems come with Null Pointer Exception. I have to try to figure it out what cause the NPO but I still didn't get it.
Please help me, I have just been stuck here for two days.
NB. This my code for MainActivity.java (where the listview will show)
public class MainActivity extends ActionBarActivity {
SQLiteDatabase db;
DatabaseHelper dBHelper = new DatabaseHelper(this);
private ListView list;
private ArrayList<String> NoteName = new ArrayList<String>();
private static final String TABLE_NOTES_NAME = "Notes";
private ArrayList<Contact> noteData;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
findViewById(R.id.pink_icon).setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent registerIntent = new Intent(MainActivity.this, AddNote.class);
MainActivity.this.startActivity(registerIntent);
}
});
display();
}
public void display() {
db = dBHelper.getReadableDatabase();
Cursor mCursor = db.rawQuery("SELECT NoteName FROM " + TABLE_NOTES_NAME , null);
ListView list = (ListView)findViewById(android.R.id.list);
NoteName.clear();
if (mCursor.moveToFirst()) {
do {
NoteName.add(mCursor.getString(mCursor.getColumnIndex(dBHelper.TOL_NOTENAME)));
} while (mCursor.moveToNext());
}
DisplayAdapterTrans disadptr = new DisplayAdapterTrans(MainActivity.this, NoteName);
list.setAdapter(disadptr); // Here the console says have a null pointer exception
mCursor.close();
}
}
This one for my DisplayAdapter
public class DisplayAdapterTrans extends BaseAdapter {
private Context mContext;
private ArrayList<String> NoteName;
public DisplayAdapterTrans(Context c, ArrayList<String> noteName) {
this.mContext = c;
this.NoteName = noteName;
}
public int getCount() {
// TODO Auto-generated method stub
return NoteName.size();
}
public Object getItem(int position) {
// TODO Auto-generated method stub
return null;
}
public long getItemId(int position) {
// TODO Auto-generated method stub
return 0;
}
public View getView(int pos, View child, ViewGroup parent) {
Holder mHolder;
LayoutInflater layoutInflater;
if (child == null) {
layoutInflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
child = layoutInflater.inflate(R.layout.notename, null);
mHolder = new Holder();
mHolder.noteName= (TextView) child.findViewById(R.id.notenameTxt);
child.setTag(mHolder);
} else {
mHolder = (Holder) child.getTag();
}
mHolder.noteName.setText(NoteName.get(pos));
return child;
}
public class Holder {
TextView noteName;
}
}

How to fetch the value from custom ExpandableList Adapter class and set into previous fragment of UI component

I have the following two class one is fragment class and another one is custom expandablelistadapter class. i want the values fetch from the expandablelistadapter class and set the values into fragment UI component like set into textview i describe as comment in following class where to taken values
and where to set the values
SlideContentFragment.java
public class SlidingContentFragment extends Fragment {
static final String LOG_TAG = "SlidingContentFragment";
// store category list from Conastant list, used for to display pagetitle
List<String> catList = AppConstants.CATEGORY_LIST;
private static String[] tmpId = {"35","36","41","42","43","44","45","46"};
ExpandableListView exListCategory;
private SlidingTabLayout mSlidingTabLayout;
/**
* A {#link android.support.v4.view.ViewPager} which will be used in conjunction with the {#link SlidingTabLayout} above.
*/
private ViewPager mViewPager;
//private ExpandableListAdapter mAdapter; // added new
private SamplePagerAdapter myAdapter;
public SlidingContentFragment() {
}
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.fragment_sliding_content, container, false);
ImageButton cartImgBtn = (ImageButton)v.findViewById(R.id.imgBtnCart);
TextView totalCntItem = (TextView)v.findViewById(R.id.tvCartItemCount);
// I want here set the value of totalCounter from ExpandableList Adapter class when i click on plus
// OR minus button of particular item it updates its value as total count of all item selected
// here following line of code which not worked
totalCntItem.setText(String.format("%d",CategoryItemListAdapter.getTotalCounter()));
return v;
}
#Override
public void onViewCreated(View view, Bundle savedInstanceState) {
// BEGIN_INCLUDE (setup_viewpager)
// Get the ViewPager and set it's PagerAdapter so that it can display items
this.myAdapter = new SamplePagerAdapter(); // added new
mViewPager = (ViewPager) view.findViewById(R.id.viewpager);
mViewPager.setAdapter(this.myAdapter);
// END_INCLUDE (setup_viewpager)
// BEGIN_INCLUDE (setup_slidingtablayout)
// Give the SlidingTabLayout the ViewPager, this must be done AFTER the ViewPager has had
// it's PagerAdapter set.
mSlidingTabLayout = (SlidingTabLayout) view.findViewById(R.id.sliding_tabs);
mSlidingTabLayout.setViewPager(mViewPager);
}
public class SamplePagerAdapter extends PagerAdapter {
public SamplePagerAdapter() {
super();
}
#Override
public int getCount() {
return catList.size();
}
#Override
public boolean isViewFromObject(View view, Object o){
return o == view;
}
#Override
public CharSequence getPageTitle(int position) {
return catList.get(position);
}
#Override
public int getItemPosition (Object object)
{
return PagerAdapter.POSITION_NONE;
}
#Override
public Object instantiateItem(ViewGroup container, final int position) {
//return super.instantiateItem(container, position);
ViewPager viewPager = (ViewPager)container;
View view = getActivity().getLayoutInflater().inflate(R.layout.pager_item,
container, false);
viewPager.addView(view);
exListCategory = (ExpandableListView)view.findViewById(R.id.myExpandableListView);
//exListCategory.setIndicatorBounds(10,20);
exListCategory.setDividerHeight(2);
if(ConnectionDetector.isInternetAvailable(getActivity())) {
new CategoryJSONAsyncTask().execute("http://..../api/Main/GetCateenOrderCategoryItemListDetail?CategoryID=" + tmpId[position].trim());
}else{
Utility.buildDialog(getActivity()).show();
}
Log.i(String.format("%s: POSITION", LOG_TAG), String.valueOf(position));
Log.i(String.format("%s: CATLIST", LOG_TAG),String.valueOf(catList.get(position)));
view.setTag(position);
return view;
}
#Override
public void destroyItem(ViewGroup container, int position, Object object) {
//viewpager
ViewPager viewPager = (ViewPager)container;
View view = (View) object;
view.getTag(position);
viewPager.removeView(view);
//((ViewPager) container).removeView((View) object);
}
}
public class CategoryJSONAsyncTask extends AsyncTask<String,Void,String> {
#Override
protected void onPreExecute() {
super.onPreExecute();
}
#Override
protected String doInBackground(String... params) {
String result = "";
try {
HttpGet httppost = new HttpGet(params[0]);
HttpClient httpclient = new DefaultHttpClient();
HttpResponse response = httpclient.execute(httppost);
int status = response.getStatusLine().getStatusCode();
if (status == 200) {
HttpEntity entity = response.getEntity();
result = EntityUtils.toString(entity);
return result;
}
return result;
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
#Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
ArrayList<CategoryParentItemList> listParent = fetchResponse(result.replace("\n","").trim());
/*for (Object obj : listParent){
if(obj.getClass() == CategoryParentItemList.class){
CategoryParentItemList p = (CategoryParentItemList)obj;
System.out.println("P-ItemName: "+ p.subCategoryName);
}
}*/
CategoryItemListAdapter adapter = new CategoryItemListAdapter(SlidingContentFragment.this.getActivity(), listParent);
exListCategory.setAdapter(adapter);
adapter.notifyDataSetChanged();
}
}
public ArrayList<CategoryParentItemList> fetchResponse(String result)
{
ArrayList<CategoryParentItemList> listParent = new ArrayList<>();
if (!result.equals(""))
{
try
{
JSONObject jsono = new JSONObject(result);
JSONArray jarray = jsono.getJSONArray("SBL");
CategoryParentItemList parent;
for (int i = 0; i < jarray.length(); i++)
{
ArrayList<CategoryChildListItem> childrens = new ArrayList<>();
childrens.clear();
CategoryChildListItem child;
JSONObject object = jarray.getJSONObject(i);
//System.out.println("SCI: " + object.getInt("SubCategoryID"));
//System.out.println("SCN: " + object.getString("SubCategoryName"));
JSONArray subItemArray = object.getJSONArray("SubCategoryItemList");
if (subItemArray.length() > 0)
{
for (int j = 0; j < subItemArray.length(); j++)
{
JSONObject subItemObject = subItemArray.getJSONObject(j);
String strItemName = subItemObject.getString("ItemName");
String strDefaultPrice = subItemObject.getString("DefaultPrice");
child = new CategoryChildListItem(strItemName, strDefaultPrice);
childrens.add(child);
//Log.i("strItemName", strItemName);
//Log.i("strDefaultPrice", strDefaultPrice);
}
parent = new CategoryParentItemList(object.getString("SubCategoryName"),childrens);
listParent.add(parent);
}
}
}
catch (JSONException e)
{
e.printStackTrace();
}
}
return listParent;
}
}
CategoryListItemAdaptor.java
public class CategoryItemListAdapter extends BaseExpandableListAdapter{
private Context context;
public static int totalCounter=0;
private ArrayList<CategoryParentItemList> listParent;
static class ViewHolderGroup {
public TextView lblSubCategoryName;
}
static class ViewHolderChild {
public TextView lblItemName;
public TextView lblDefualtPrice;
public TextView lblQty;
public ImageButton imgPlus;
public ImageButton imgMinus;
}
public CategoryItemListAdapter(Context context, ArrayList<CategoryParentItemList> listParent) {
super();
this.context = context;
this.listParent = listParent;
}
#Override
public int getGroupCount() {
return listParent.size();
}
#Override
public int getChildrenCount(int groupPosition) {
ArrayList<CategoryChildListItem> ch = listParent.get(groupPosition).getChildList();
return ch.size();
}
#Override
public Object getGroup(int groupPosition) {
return listParent.get(groupPosition);
}
#Override
public Object getChild(int groupPosition, int childPosition) {
ArrayList<CategoryChildListItem> ch = listParent.get(groupPosition).getChildList();
return ch.get(childPosition);
}
#Override
public long getGroupId(int groupPosition) {
return groupPosition;
}
#Override
public long getChildId(int groupPosition, int childPosition) {
return childPosition;
}
#Override
public boolean hasStableIds() {
return false;
}
#Override
public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) {
//CategoryParentItemList parentItem = (CategoryParentItemList)listParent.get(groupPosition);
CategoryParentItemList parentItem = (CategoryParentItemList) getGroup(groupPosition);
ViewHolderGroup holderGroup;
if (convertView == null) {
LayoutInflater infalInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.group_header, null);
holderGroup = new ViewHolderGroup();
holderGroup.lblSubCategoryName = (TextView) convertView.findViewById(R.id.tvItemName);
convertView.setTag(holderGroup);
} else {
holderGroup = (ViewHolderGroup) convertView.getTag();
}
holderGroup.lblSubCategoryName.setText(parentItem.getSubCategoryName());
return convertView;
}
#Override
public View getChildView(int groupPosition,int childPosition, boolean isLastChild, View convertView, ViewGroup parent) {
//final CategoryParentItemList parentItem = (CategoryParentItemList) listParent.get(groupPosition);
//final CategoryChildListItem childItem = (CategoryChildListItem) parentItem.getChildList().get(childPosition);
CategoryChildListItem childItem = (CategoryChildListItem) getChild(groupPosition, childPosition);
ViewHolderChild holder;
if (convertView == null) {
LayoutInflater infalInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.child_row, null);
holder = new ViewHolderChild();
holder.lblItemName = (TextView) convertView.findViewById(R.id.tvSubItemName);
holder.lblDefualtPrice = (TextView) convertView.findViewById(R.id.tvrRupees);
holder.lblQty = (TextView) convertView.findViewById(R.id.tvQty);
holder.imgPlus = (ImageButton) convertView.findViewById(R.id.imageButtonPlus);
holder.imgMinus = (ImageButton) convertView.findViewById(R.id.imageButtonMinus);
convertView.setTag(holder);
} else {
holder = (ViewHolderChild) convertView.getTag();
}
holder.lblItemName.setText(childItem.getSubItemName());
holder.lblDefualtPrice.setText(childItem.getDefaultPrice());
int tmpCount = Integer.parseInt(holder.lblQty.getText().toString());
holder.imgPlus.setOnClickListener(new ClickUpdateListener(childItem,holder, tmpCount));
holder.imgMinus.setOnClickListener(new ClickUpdateListener(childItem,holder, tmpCount));
return convertView;
}
#Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return true;
}
#Override
public boolean areAllItemsEnabled() {
return true;
}
public static int getTotalCounter() {
return totalCounter;
}
private class ClickUpdateListener implements View.OnClickListener {
ViewHolderChild holder;
public CategoryChildListItem childItem;
int counter = 0;
String counterMin;
public ClickUpdateListener(CategoryChildListItem childItem,ViewHolderChild holder, int cnt) {
this.childItem = childItem;
this.holder = holder;
this.counter = cnt;
}
#Override
public void onClick(View v) {
if(v.getId() == R.id.imageButtonPlus) {
counter = counter + 1;
totalCounter+=1;
System.out.println(childItem.getSubItemName()+" : "+childItem.getDefaultPrice() + ": C+ :" + counter);
holder.lblQty.setText(String.format("%d", counter));
notifyDataSetChanged();
}
if(v.getId() == R.id.imageButtonMinus){
counterMin = (String) holder.lblQty.getText();
counter = Integer.parseInt(counterMin.toString().trim());
counterMin = null;
if(counter > 0) {
counter = counter - 1;
totalCounter-=1;
System.out.println(childItem.getSubItemName()+" : "+childItem.getDefaultPrice() + ": C- :" + counter);
holder.lblQty.setText(String.format("%d", counter));
notifyDataSetChanged();
}else{
Toast.makeText(context,"Qty Zero",Toast.LENGTH_SHORT).show();
}
}
}
}
}

Listview order.runOnUiThread?

Hi guys I have a problem with my ListView...
This is my code:
private ArrayAdapter<String> adapter ;
private ProgressDialog m_ProgressDialog = null;
private ArrayList<Order> m_orders = null;
public OrderAdapter m_adapter;
private Runnable viewOrders;
public class Order {
private String orderName;
private String orderStatus;
public String getOrderName() {
return orderName;
}
public void setOrderName(String orderName) {
this.orderName = orderName;
}
public String getOrderStatus() {
return orderStatus;
}
public void setOrderStatus(String orderStatus) {
this.orderStatus = orderStatus;
}
}
private class OrderAdapter extends ArrayAdapter<Order> {
private ArrayList<Order> items;
public OrderAdapter(Context context, int textViewResourceId, ArrayList<Order> items) {
super(context, textViewResourceId, items);
this.items = items;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View v = convertView;
if (v == null) {
LayoutInflater vi = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = vi.inflate(R.layout.list_single, null);
}
Order o = items.get(position);
if (o != null) {
// TextView tv2 = (TextView) v.findViewById(R.id.tv2);
TextView tv1 = (TextView) v.findViewById(R.id.tv1); //codice volo
TextView tv2 = (TextView) v.findViewById(R.id.tv2); // citta
TextView tv5 = (TextView) v.findViewById(R.id.tv5); //stato volo
TextView tv6 = (TextView) v.findViewById(R.id.tv6); //ora prevista
TextView tv7 = (TextView) v.findViewById(R.id.tv7); //ora stimata if (tt != null) {
tv1.setText("VOLO: "+o.getOrderName());
}
return v;
}
}
private void getOrders(){
try{
m_orders = new ArrayList<Order>();
Order o1 = new Order();
o1.setOrderName("SF services");
o1.setOrderStatus("Pending");
Order o2 = new Order();
o2.setOrderName("SF Advertisement");
o2.setOrderStatus("Completed");
m_orders.add(o1);
m_orders.add(o2);
Thread.sleep(2000);
Log.i("ARRAY", ""+ m_orders.size());
} catch (Exception e) {
Log.e("BACKGROUND_PROC", e.getMessage());
}
runOnUiThread(returnRes);
}
public LayoutInflater getSystemService(String layoutInflaterService) {
// TODO Auto-generated method stub
return null;
}
private Runnable returnRes = new Runnable() {
#Override
public void run() {
if(m_orders != null && m_orders.size() > 0){
m_adapter.notifyDataSetChanged();
for(int i=0;i<m_orders.size();i++)
m_adapter.add(m_orders.get(i));
}
m_ProgressDialog.dismiss();
m_adapter.notifyDataSetChanged();
}
};
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View ios = inflater.inflate(R.layout.arrivi, container, false);
m_orders = new ArrayList<Order>();
this.m_adapter = new OrderAdapter(getActivity(), R.layout.list_single, m_orders);
setListAdapter(getActivity(),m_adapter);
viewOrders = new Runnable(){
#Override
public void run() {
getOrders();
}
};
Thread thread = new Thread(null, viewOrders, "MagentoBackground");
thread.start();
m_ProgressDialog = ProgressDialog.show(getActivity(),
"Please wait...", "Retrieving data ...", true);
// new MyTask().execute("");
return ios;
}
private void setListAdapter(FragmentActivity activity,
OrderAdapter m_adapter2) {
// TODO Auto-generated method stub
}
In eclipse I get this error:
The method runOnUiThread(Runnable) is undefined for the type arrivi
This code isn't in MainActivity but in a fragment named arrivi.
The file XML is list_single.xml and is associated at custom rows!
Can you help me please?
Another question...
How to implement AsyncTask for replacing Thread?
public class MyTask extends AsyncTask<String, Void, String> {
ProgressDialog prog;
String info;
.... When I run my app... it's in loop in "Retrieving data ..."
Thank you so much!!

runOnUiThread is a method of Activity subclasses. Inside a Fragment :
getActivity().runOnUiThread(runnable);

You need to create an instance for AsyncTask like this and execute your program on background.
new AsyncTask<Void, Integer, Long>(){
#Override
protected Long doInBackground(Void... params) {
try {
// call you method here
} catch (Exception ex) {
// handle the exception here
}
return null;
}
}.execute();
runOnUiThread is used to execute some program in main Thread. When you call runOnUiThread , the action will be executed immediately if we are already in UIThread else will be posted in Queue.
You need to use the Activity Context associated with your Fragment to `runOnUiThread'.
getActivity().runOnUiThread(new Runnable() {
#Override
public void run() {
// execute your code here
}
});