I used CustomListAdapter class which extends baseadapter. In that i have a button on each view of the list view ..when I lick on the button it should print a text. everything is working fine except that the text is printed in someother view too. I have found many similar question but no exact solution.
public class CustomListAdapter extends BaseAdapter {
List<HashMap<String, Object>> models;
Context context;
LayoutInflater inflater;
ImageView pic,image,delam;
TextView name,timestamp,msg,url,idas,idas2;
ArrayList<String> listItems;
public int count1 = 0;
ProgressDialog pDialog;
//String session_email="",session_type="",share_app,share_via;
private String stringVal;
private int mCounter1=1;
private int counter=0;
public int temp=0;
String con, pros;
private int[] counters;
int pos;
int width,height;
Transformation transformation;
//ImageButton sharingButton;
String pacm,session_email;
int i ;
ImageButton like;
ImageButton share;
JSONParser jsonParser = new JSONParser();
static String IP = IpAddress.Ip;
//url to create new product
public static String add_wish = IP+"/studio/add_wishlist.php";
private static String url_all_propertiesdel = IP+"/studio/getdelete_all_agent.php";
boolean isSelected;
int a,a1,b,b1;
//private static final String TAG_SUCCESS1 = "mass";
private static final String TAG_USER = "users";
private static final String TAG_PRO = "properties";
//private static final String TAG_PRO1 = "properties1";
// products JSONArray
JSONArray users = null;
//JSONArray users1 = null;
View view;
// JSON Node names
private static final String TAG_SUCCESS = "success";
SharedPreferences sPref;
// int position;
public CustomListAdapter(Context context, List<HashMap<String, Object>> models) {
this.context = context;
this. models = models;
inflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
this.counters = new int[30];
//this.session_email = sPref.getString("SESSION_UID","");
}
public class ViewHolder {
public TextView countt;
public ImageButton like,share;
}
public void clear(){
if(models!=null)
models.clear();
}
#Override
public int getCount() {
return models.size();
}
public HashMap<String, Object> getItem(int position) {
return models.get(position);
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public int getItemViewType(int position) {
// TODO Auto-generated method stub
return position;
}
#Override
public int getViewTypeCount() {
// TODO Auto-generated method stub
return 1;
}
#Override
public View getView( int position, final View convertView, ViewGroup parent) {
// view = null;
view = convertView;
ViewHolder viewHolder;
pos = getItemViewType(position);
// long posn = getItemId(position);
// final int paps= (int)posn ;
if (view == null) {
viewHolder = new ViewHolder();
view = inflater.inflate(R.layout.fragment_home2, parent, false);
//your code
//add below code after (end of) your code
viewHolder.like=(ImageButton)view.findViewById(R.id.likem);
viewHolder.share=(ImageButton)view.findViewById(R.id.share);
viewHolder.like.setTag(position);
// viewHolder.share.setTag(position);
/* viewHolder.share.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
HashMap<String, Object> item = models.get(position);
Intent share = new Intent(Intent.ACTION_SEND);
// If you want to share a png image only, you can do:
// setType("image/png"); OR for jpeg: setType("image/jpeg");
share.setType("image/*");
// Make sure you put example png image named myImage.png in your
// directory
String imagePath = Environment.getExternalStorageDirectory()
+ "/108.png";
String imagePath = (String)item.get("IMAGE");
Toast.makeText(context, imagePath, Toast.LENGTH_LONG).show();
File imageFileToShare = new File(imagePath);
Uri uri = Uri.fromFile(imageFileToShare);
share.putExtra(Intent.EXTRA_STREAM, uri);
context.startActivity(Intent.createChooser(share, "Share Image!"));
}
});*/
// viewHolder.share.setOnItemClickListener(this);
viewHolder.like.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
int position = (Integer) v.getTag();
// viewHolder.countt = (TextView) v.findViewById(R.id.count);
HashMap<String, Object> item = models.get(position);
isSelected = (Boolean) item.get("selected");
item.put("selected", !isSelected);
notifyDataSetChanged();
}
});
} else {
viewHolder = (ViewHolder) view.getTag();
}
final HashMap<String, Object> item = getItem(position);
// like = (ImageView) view.findViewById(R.id.like);
//sharingButton = (ImageButton) view.findViewById(R.id.share);
// final HashMap<String, Object> item1 = getItem(position);
isSelected = (Boolean) item.get("selected");
if (isSelected) {
viewHolder.like.setBackgroundResource(R.drawable.checked);
} else {
viewHolder.like.setBackgroundResource(R.drawable.unchecked);
}
pic = (ImageView) view.findViewById(R.id.profilePic);
name = (TextView) view.findViewById(R.id.name);
idas = (TextView) view.findViewById(R.id.hpid);
idas2 = (TextView) view.findViewById(R.id.hpid2);
timestamp = (TextView) view.findViewById(R.id.timestamp);
msg = (TextView) view.findViewById(R.id.txtStatusMsg);
url = (TextView) view.findViewById(R.id.txtUrl);
image = (ImageView) view.findViewById(R.id.feedImage1);
//countt =(TextView)view.findViewById(R.id.count);
/*if any exception raises please use
locationTitle.setText(((String)item.get(“NAME�?)));
use this technique for the Image also.
*/
//holder.like.setText(item.get(item));
//like.setText((String) item.get(R.id.like));
idas.setText((CharSequence) item.get("UIDAS"));
// listItems.add(idas.getText().toString());
name.setText((CharSequence) item.get("NAME"));
timestamp.setText((CharSequence) item.get("TIME"));
msg.setText((CharSequence) item.get("MSG"));
url.setText((CharSequence) item.get("URL"));
//countt.setText((CharSequence) item.get("COUN"));
//count.setText("" + count1);
int w = image.getWidth();
int h = image.getHeight();
if (w > 1000)
{
a=w-1000;
b=w-a;
}
else
{
b=w;
}
if (h > 1000)
{
a1=h-1000;
b1=h-a1;
}
else
{
b1=h;
}
Picasso.with(context)
//.load("PIC")
.load((String)item.get("PIC"))
.placeholder(R.drawable.profile_dummy)
//.error(R.drawable.ic_whats_hot)
.resize(50, 50)
// .centerCrop()
// .fit()
.into(pic);
/*Display display = getActivity().getWindowManager().getDefaultDisplay();
Point size = new Point();
display.getSize(size);
int width = size.x;*/
Picasso.with(context)
.load((String)item.get("IMAGE"))
//.load("IMAGE")
// .placeholder(R.drawable.ic_pages)
//.error(R.drawable.ic_home)
.resize(1000,b1)
.onlyScaleDown()
//.centerCrop()
// .fit().centerInside()
.into(image);
/*if ((image).length() < 0)
{
//image.setVisibility(View.VISIBLE);
// invalid = true;
idas2.setText(1);
// Toast.makeText(getApplicationContext(), "hgghghghjgh", Toast.LENGTH_LONG).show();
}*/
/* delam.setOnClickListener(
new OnClickListener() {
#Override
public void onClick(View v) {
Integer index = (Integer) v.getTag();
// pacm = idas.getText().toString();
listItems.remove(index.intValue());
notifyDataSetChanged();
}
}
);
*/
/*
delam.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
pacm = idas.getText().toString();
removeItemFromList();
}
});
*/
/* like.setTag(position);
like.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
// int p = (Integer)v.getTag();
//int p;
//int posit=(Integer)v.getTag();
//String s = view[position];
//Context get = null;
//Toast.makeText(context, String.valueOf(p) , Toast.LENGTH_LONG).show();
//like.setBackgroundResource(R.drawable.checked);
if( viewHolder.like.isSelected()){
viewHolder.like.setSelected(false);
//ctv.setBackgroundColor (Color.parseColor("#ffffff"));
viewHolder.like.setBackgroundResource(R.drawable.unchecked);
}else if(! viewHolder.like.isSelected()){
viewHolder.like.setSelected(true);
//ctv.setBackgroundColor (Color.parseColor("#d2d0d0"));
viewHolder.like.setBackgroundResource(R.drawable.checked);
}
}
});*/
return view;
}
// HashMap<String, Object> item = models.get(position);
}
Well try this, in your HashMap list you need to have one more item called selected to store selected row status
#Override
public View getView(int position, final View convertView, ViewGroup parent) {
//your code
if (view == null) {
viewHolder = new ViewHolder();
//your code
//add below code after (end of) your code
viewHolder.like.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
int position = (int) v.getTag();
HashMap<String, Object> item = models.get(position);
boolean isSelected = (boolean) item.get("selected");
item.put("selected", !isSelected);
notifyDataSetChanged();
}
});
} else {
viewHolder = (ViewHolder) view.getTag();
}
//updated
viewHolder.like.setTag(position);
final HashMap<String, Object> item = getItem(position);
boolean isSelected = (boolean) item.get("selected");
if (isSelected) {
viewHolder.like.setBackgroundResource(R.drawable.checked);
} else {
viewHolder.like.setBackgroundResource(R.drawable.unchecked);
}
//your other code
}
This problem is due to recycling of Viewholder object in your ListView through convertView. Do not make logic based on the view state as the same state can be passed to some another item of ListView, where it supposed to be presented.
So what to do?
Hold your state on your data Item. And use notify dataSetChanged when you click some item not change its background Directly.
You can see example here. That one id for RecyclerView Adapter, but concept is same. RecyclerView causes issue when recycling
Related
I have used Customized ListView And not ExtendedListView. i have taken relative layout in order to show it as sub_list. By default i have set the visibilty of this sub_list relative layout as GONE. And on the click of any listItem that relative layout(by default set as gone) will appear on the screen respectively. But When I click on any of the rows the sub_list appear for each row simultaneously. What i want is that it should be shown only for one row at a time. I have already checked this similar [question]: How to modify only one row at a time in Listview? and modified my code but still i am unable to achieve my goal.
Here is my pieace of code:
public class CustomAdapter extends BaseAdapter {
Activity context;
ArrayList<String> s_date,c_number,d_ration,s_time,download_path,a_number,a_name,dt_number;
int flag=0,temp=1,position;
String mUrl;
int posview;
private int selectedIndex;
CustomAdapter(Activity context, ArrayList<String> start_date, ArrayList<String> caller_number, ArrayList<String> duration,ArrayList<String> start_time, ArrayList<String> download_path, ArrayList<String> agent_number, ArrayList<String> agent_name,ArrayList<String> dt_num)
{
this.context=context;
this.s_date=start_date;
this.c_number=caller_number;
this.d_ration=duration;
this.s_time=start_time;
this.download_path=download_path;
this.a_number=agent_number;
this.a_name=agent_name;
this.dt_number=dt_num;
selectedIndex = -1;
}
public void setSelectedIndex(int ind)
{
selectedIndex = ind;
notifyDataSetChanged();
}
#Override
public int getCount() {
return s_date.size();
}
#Override
public Object getItem(int i) {
return null;
}
#Override
public long getItemId(int position) {
return position;
}
public View getView(final int pos, final View v, ViewGroup g)
{
//LayoutInflater l=context.getLayoutInflater();
//View rowView=l.inflate(R.layout.log_layout,null,true);
posview=pos;
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
final View row = inflater.inflate(R.layout.list_item, g, false);
TextView start_date = (TextView) row.findViewById(R.id.start_date);
start_date.setText(s_date.get(pos));
TextView caller_number = (TextView) row.findViewById(R.id.caller_number);
caller_number.setText(c_number.get(pos));
TextView duration = (TextView) row.findViewById(R.id.duration);
duration.setText(d_ration.get(pos));
TextView start_time = (TextView) row.findViewById(R.id.start_time);
start_time.setText(s_time.get(pos));
TextView agent_name = (TextView) row.findViewById(R.id.agent_name);
agent_name.setText(a_name.get(pos));
TextView agent_number = (TextView) row.findViewById(R.id.agent_number);
agent_number.setText(a_number.get(pos));
TextView dt_numb=(TextView)row.findViewById(R.id.dt_number);
dt_numb.setText("MHL No. -"+dt_number.get(pos));
RelativeLayout r = (RelativeLayout)row.findViewById(R.id.sub_layout);
r.setVisibility(position == posview ? View.VISIBLE : View.GONE);
row.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
posview=pos;
notifyDataSetChanged();
}
});
return row;
}
}
Previously my code was:
row.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
//setSelectedIndex(view.getId());
RelativeLayout sub_list = (RelativeLayout) row.findViewById(R.id.sub_layout);
sub_list.setVisibility(View.VISIBLE);
//notifyDataSetChanged();
}
});
I am getting all the data dynamically. This is how i'm using the adapter in MainActivity:
CustomAdapter a=new CustomAdapter(MainScreen.this,start_date,caller_number,duration,start_time,download_path,agent_number,agent_name,dt_number);
data_list.setAdapter(a);
In this start_date caller_number etc are arraylist.This is how i'm parsing data in MainActivity.
JSONObject responseObject = new JSONObject(response);
JSONObject callLog = responseObject.getJSONObject("call_log");
Iterator<String> phoneNumbers = callLog.keys();
while (phoneNumbers.hasNext()) {
String number = phoneNumbers.next();
// Log.v("string number",number);
JSONObject numberLog = callLog.getJSONObject(number);
Iterator<String> callEntries = numberLog.keys();
while (callEntries.hasNext()) {
String entry = callEntries.next();
//Log.v("unique keys are",entry);
JSONObject entryObject = numberLog.getJSONObject(entry);
jsonArray.put(entryObject.getString("start_date"));
jsonArray.put(entryObject.getString("start_time"));
jsonArray.put(entryObject.getString("end_date"));
jsonArray.put(entryObject.getString("end_time"));
jsonArray.put(entryObject.getString("recording_path"));
String startDate = entryObject.getString("start_date");
start_date.add(startDate);
String startTime = entryObject.getString("start_time");
start_time.add(startTime);
String endDate = entryObject.getString("end_date");
String endTime = entryObject.getString("end_time");
String call_sdate = entryObject.getString("call_sdate");
String call_edate = entryObject.getString("call_edate");
String call_type = entryObject.getString("call_type");
String caller = entryObject.getString("caller");
caller_number.add(caller);
String duartion = entryObject.getString("duartion");
String call_duartion = entryObject.getString("call_duartion");
duration.add(call_duartion);
String dtmf = entryObject.getString("dtmf");
String dt_num = entryObject.getString("dt_number");
dt_number.add((dt_num));
String recording_path = entryObject.getString("recording_path");
download_path.add(recording_path);
String agent_mobile = entryObject.getString("agent_mobile");
agent_number.add(agent_mobile);
String a_name = entryObject.getString("agent_name");
agent_name.add(a_name);
Create two variables :
Map<Integer, View> lastExpanded = new HashMap<>();
int lastExpandedPosition =-1;
Create a function in your adapter :
private void expand(int i, View layout){
if(!lastExpanded.containsKey(i)){
layout.setVisibility(View.VISIBLE);
lastExpanded.put(i, layout);
if(lastExpanded.containsKey(lastExpandedPosition)){
expand(lastExpandedPosition, lastExpanded.get(lastExpandedPosition));
}
lastExpanded.remove(lastExpandedPosition);
lastExpandedPosition = i;
lastExpanded.put(lastExpandedPosition, layout);
}else{
layout.setVisibility(View.GONE);
lastExpandedPosition = -1;
lastExpanded.remove(i);
}
}
now,
final RelativeLayout layout = (RelativeLayout) row.findViewById(R.id.b);
layout.setVisibility(View.GONE);
row.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
expand(i, layout);
}
});
You can acheive this easily with expandable listview and your adapter class should extend BaseExpandableListAdapter
in activity
private int lastExpandedPosition = -1;
expListView.setOnGroupClickListener(new OnGroupClickListener() {
#Override
public boolean onGroupClick(ExpandableListView parent, View v,
final int groupPosition, long id) {
// TODO Auto-generated method stub
if (parent.isGroupExpanded(groupPosition)) {
expListView
.collapseGroup(lastExpandedPosition);
} else {
expListView.expandGroup(groupPosition);
}
return true;
}
});
expListView.setOnGroupExpandListener(new OnGroupExpandListener() {
#Override
public void onGroupExpand(int groupPosition) {
// TODO Auto-generated method stub
if (lastExpandedPosition != -1
&& groupPosition != lastExpandedPosition) {
expListView
.collapseGroup(lastExpandedPosition);
}
lastExpandedPosition = groupPosition;
}
});
You have to use ArrayList which contents as your data while you click on the item.
public class DataModel{
private String s_date,c_number,d_ration,s_time,download_path,a_number,a_name,dt_number;
private boolean isChildVisible;
..... create it's setter and getter methods.
}
when itemclick is called that time you should update the flag of isChildVisible for that position.
public void setSelectedIndex(int ind)
{
arrayListDataModel.get(ind).setIsChildVisible(true);
notifyDataSetChanged();
}
In your getview method :
public View getView(final int pos, final View v, ViewGroup g)
{
----your initialization code.
RelativeLayout r = (RelativeLayout)row.findViewById(R.id.sub_layout);
r.setVisibility(arrayListDataModel.get(pos).isChildVisible() ? View.VISIBLE : View.GONE);
row.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
setSelectedIndex(pos);
}
});
return row;
}
parse the data with below code :
final ArrayList<DataModel> dataModelList = new ArrayList<>();
while (callEntries.hasNext()) {
DataModel dataModel = new DataModel();
String entry = callEntries.next();
//Log.v("unique keys are",entry);
JSONObject entryObject = numberLog.getJSONObject(entry);
jsonArray.put(entryObject.getString("start_date"));
jsonArray.put(entryObject.getString("start_time"));
jsonArray.put(entryObject.getString("end_date"));
jsonArray.put(entryObject.getString("end_time"));
jsonArray.put(entryObject.getString("recording_path"));
String startDate = entryObject.getString("start_date");
dataModel.setStartDate(startDate);
String startTime = entryObject.getString("start_time");
dataModel.setStartTime(startTime);
...... same as above for others fields
dataModelList.add(dataModel);
}
I have a list view like the below image.
Now I want to select Only Any two items from the list view at a time and pass the values of both listview items with Intent to next activity. How can I achieve it.?
If Both items are not selected set validation on it?
AdapterClass
public class LoadAdapter extends BaseAdapter {
private ArrayList<DataBase> mProductItems;
private LayoutInflater mLayoutInflater;
private Context mContext;
DBHelper mydb;
DataBase stringItem;
public LoadAdapter(Context context, ArrayList<DataBase> arrayList){
mContext = context;
mProductItems = arrayList;
mLayoutInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
#Override
public int getCount() {
// TODO Auto-generated method stub
Log.e("testtt", String.valueOf(mProductItems.size()));
return mProductItems.size();
}
#Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return null;
}
#Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return 0;
}
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
final ViewHolder holder;
if (convertView == null) {
holder = new ViewHolder();
convertView = mLayoutInflater.inflate(R.layout.load_chart_item, parent, false);
holder.txtv_name = (TextView) convertView.findViewById(R.id.text);
holder.nameid = (TextView) convertView.findViewById(R.id.nameid);
holder.btn_delete = (Button) convertView.findViewById(R.id.btn_delete);
holder.btn_edit = (Button)convertView.findViewById(R.id.btn_edit);
holder.location = (TextView)convertView.findViewById(R.id.loc);
holder.img= (ImageView)convertView.findViewById(R.id.img);
holder.btn_delete.setTag(position);
convertView.setTag(holder);
} else {
holder = (ViewHolder)convertView.getTag();
}
mydb = new DBHelper(mContext);
stringItem = mProductItems.get(position);
if (stringItem != null) {
if (holder.txtv_name != null) {
holder.txtv_name.setText(stringItem.getName());
holder.nameid.setText(stringItem.getId());
holder.location.setText(stringItem.getLocation());
Log.e("saved Location values",stringItem.getLocation());
}
}
if(selected.get(position))
{
//for selected row
holder.img.setBackgroundResource(R.drawble.myimg)
}
else
{
// for not selected row
}
holder.btn_delete.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
DataBase test = mProductItems.get(position);
String id = test.getId();
mydb.deleteContact(Integer.valueOf(id));
mProductItems.remove(mProductItems.get(position));
LoadAdapter.this.notifyDataSetChanged();
if (mProductItems.size() == 0){
mProductItems.clear();
LoadAdapter.this.notifyDataSetChanged();
}
}
});
Log.e("DataBase", String.valueOf(mydb.getAllCotacts()));
holder.btn_edit.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent=new Intent(mContext,UpdateData.class).setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
SharedPreferences preff = PreferenceManager.getDefaultSharedPreferences(mContext);
SharedPreferences.Editor edi = preff.edit();
edi.putString("key",String.valueOf(position+1));
edi.apply();
mContext.startActivity(intent);
}
});
return convertView;
}
public void refresh(ArrayList<DataBase> items)
{
this.mProductItems = items;
notifyDataSetChanged();
}
private static class ViewHolder {
ImageView img;
TextView txtv_name,nameid,location;
Button btn_delete,btn_edit;
}
}
Main Class
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import java.util.ArrayList;
public class LoadChart extends AppCompatActivity {
public final static String EXTRA_MESSAGE = "MESSAGE";
private SwipeListView listView;
DBHelper mydb;
Button det;
LoadAdapter loadAdapter;
ArrayList<DataBase> array_list;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.load_chart);
mydb = new DBHelper(this);
array_list = mydb.getAllCotacts();
Log.e("logging", String.valueOf(array_list));
// ArrayAdapter<String> arrayAdapter=new ArrayAdapter<String>(this,R.layout.load_chart_item,R.id.text, array_list);
det = (Button)findViewById(R.id.reli);
listView = (SwipeListView) findViewById(R.id.listview);
listView.setAdapter(new LoadAdapter(getApplicationContext(),array_list));
det.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String str = "";
str = relationAdapter.getSelected();
Toast.makeText(RelationShipChartList.this, str, Toast.LENGTH_SHORT).show();
}
});
listView.setSwipeListViewListener(new BaseSwipeListViewListener() {
int openItem = -1;
int lastOpenedItem = -1;
int lastClosedItem = -1;
#Override
public void onOpened(int position, boolean toRight) {
lastOpenedItem = position;
int index = position - listView.getFirstVisiblePosition();
View view = listView.getChildAt(index);
Button delete = (Button) view.findViewById(R.id.btn_delete);
Button edit = (Button) view.findViewById(R.id.btn_edit);
if (!toRight) {
delete.setVisibility(View.VISIBLE);
edit.setVisibility(View.VISIBLE);
}
if (openItem > -1 && lastOpenedItem != lastClosedItem) {
listView.closeAnimate(openItem);
}
openItem = position;
}
#Override
public void onStartClose(int position, boolean right) {
Log.d("swipe", String.format("onStartClose %d", position));
lastClosedItem = position;
}
#Override
public void onClosed(int position, boolean fromRight) {
int index = position - listView.getFirstVisiblePosition();
View view = listView.getChildAt(index);
Button delete = (Button) view.findViewById(R.id.btn_delete);
Button edit = (Button) view.findViewById(R.id.btn_edit);
if (!fromRight) {
delete.setVisibility(View.INVISIBLE);
edit.setVisibility(View.INVISIBLE);
}
}
#Override
public void onListChanged() {
}
#Override
public void onMove(int position, float x) {
}
#Override
public void onStartOpen(int position, int action, boolean right) {
}
#Override
public void onClickFrontView(int position) {
int id_To_Search = position;
DataBase test = array_list.get(position);
String id = test.getId();
String name = test.getName();
String loc = test.getLocation();
String dt = test.getDate();
String time = test.getTime();
Bundle dataBundle = new Bundle();
dataBundle.putString("name",name);
dataBundle.putString("date",dt);
dataBundle.putString("time",time);
dataBundle.putString("location",loc);
dataBundle.putInt("id", Integer.parseInt(id));
Intent intent = new Intent(getApplicationContext(),LoadedChart.class);
intent.putExtras(dataBundle);
startActivity(intent);
}
#Override
public void onClickBackView(int position) {
Log.e("swipe", String.format("onClickBackView %d", position));
}
#Override
public void onDismiss(int[] reverseSortedPositions) {
}
});
}
public int convertDpToPixel(float dp) {
DisplayMetrics metrics = getResources().getDisplayMetrics();
float px = dp * (metrics.densityDpi / 160f);
return (int) px;
}
#Override
public void onResume()
{
super.onResume();
Set_Referash_Data();
}
public void Set_Referash_Data() {
array_list.clear();
mydb = new DBHelper(this);
ArrayList<DataBase> con = mydb.getAllCotacts();
for (int i = 0; i < con.size(); i++) {
String tidno = con.get(i).getId();
String name = con.get(i).getName();
String cons = con.get(i).getCon();
String loc = con.get(i).getLocation();
DataBase cnt = new DataBase();
cnt.setId(tidno);
cnt.setName(name);
cnt.setCon(cons);
cnt.setLocation(loc);
array_list.add(cnt);
Log.e(String.valueOf(array_list),"RefreshData");
}
mydb.close();
array_list = mydb.getAllCotacts(); //reload the items from database
LoadAdapter ld = new LoadAdapter(getApplicationContext(),array_list);
listView.setAdapter(ld);
ld.refresh(array_list);
ld.notifyDataSetChanged();
Log.e(String.valueOf(array_list),"RefreshData Final");
}
}
Logcat
05-09 14:47:50.706 29939-29939/com.example.user.humandesignsample E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.user.humandesignsample, PID: 29939
java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String com.example.user.humandesignsample.RelationAdapter.getSelected()' on a null object reference
at com.example.user.humandesignsample.RelationShipChartList$1.onClick(RelationShipChartList.java:45)
at android.view.View.performClick(View.java:5204)
at android.view.View$PerformClick.run(View.java:21153)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
I would use Action Mode with MultiChoiceModeListener.
http://developer.android.com/reference/android/widget/AbsListView.MultiChoiceModeListener.html
There is a callback onItemCheckedStateChanged(ActionMode mode, int position, boolean checked).
You can easily get values of already checked list items ListView.getCheckedItemPositions. So you can prevent selection, if you already selected two or even at once pass the values(or ids) of selected ones without any effort.
You can simply put a counter on item selection.
Take a variable say for ex.
int count = 0;
Check this variable before marking item as selected/deselected:
if(item.isSelected())
{
// you need to make is disable
if(count>0)
{
count--;
// // mark item as deselected
}
}
else
{
// make it selected
if(count<2)
{
count++;
// mark item as selected
}
}
This will make you select ONLY TWO items at a time.
Modify your adapter like this:
public class LoadAdapter extends BaseAdapter {
private ArrayList<DataBase> mProductItems;
private LayoutInflater mLayoutInflater;
private Context mContext;
DBHelper mydb;
DataBase stringItem;
ArrayList<Boolean> selected = new ArrayList<>();
private int count=0;
public LoadAdapter(Context context, ArrayList<DataBase> arrayList){
mContext = context;
mProductItems = arrayList;
mLayoutInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
for (int i = 0; i < arrayList.size(); i++) {
selected.add(false);
}
}
#Override
public int getCount() {
// TODO Auto-generated method stub
Log.e("testtt", String.valueOf(mProductItems.size()));
return mProductItems.size();
}
#Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return null;
}
#Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return 0;
}
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
final ViewHolder holder;
if (convertView == null) {
holder = new ViewHolder();
convertView = mLayoutInflater.inflate(R.layout.load_chart_item, parent, false);
holder.txtv_name = (TextView) convertView.findViewById(R.id.text);
holder.nameid = (TextView) convertView.findViewById(R.id.nameid);
holder.btn_delete = (Button) convertView.findViewById(R.id.btn_delete);
holder.btn_edit = (Button)convertView.findViewById(R.id.btn_edit);
holder.location = (TextView)convertView.findViewById(R.id.loc);
holder.btn_delete.setTag(position);
convertView.setTag(holder);
} else {
holder = (ViewHolder)convertView.getTag();
}
mydb = new DBHelper(mContext);
stringItem = mProductItems.get(position);
if (stringItem != null) {
if (holder.txtv_name != null) {
holder.txtv_name.setText(stringItem.getName());
holder.nameid.setText(stringItem.getId());
holder.location.setText(stringItem.getLocation());
Log.e("saved Location values",stringItem.getLocation());
}
}
if(selected.get(position))
{
//for selected row
holder.txtv_name.setTextColor(color.red);
}
else
{
// for not selected row
holder.txtv_name.setTextColor(color.black);
}
holder.txtv_name.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if(holder.txtv_name.getCurrentTextColor()== R.color.black)
{
//is not selected
if(count<2)
{
count++;
selected.set(position,true);
// mark item as selected
}
}
else
{
//is selected
if(count>0)
{
count--;
selected.set(position,false);
// // mark item as deselected
}
}
notifyDataSetChanged();
}
});
holder.btn_delete.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
DataBase test = mProductItems.get(position);
String id = test.getId();
mydb.deleteContact(Integer.valueOf(id));
mProductItems.remove(mProductItems.get(position));
LoadAdapter.this.notifyDataSetChanged();
if (mProductItems.size() == 0){
mProductItems.clear();
LoadAdapter.this.notifyDataSetChanged();
}
}
});
Log.e("DataBase", String.valueOf(mydb.getAllCotacts()));
holder.btn_edit.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent intent=new Intent(mContext,UpdateData.class).setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
SharedPreferences preff = PreferenceManager.getDefaultSharedPreferences(mContext);
SharedPreferences.Editor edi = preff.edit();
edi.putString("key",String.valueOf(position+1));
edi.apply();
mContext.startActivity(intent);
}
});
return convertView;
}
public void refresh(ArrayList<DataBase> items)
{
this.mProductItems = items;
notifyDataSetChanged();
}
private static class ViewHolder {
TextView txtv_name,nameid,location;
Button btn_delete,btn_edit;
}}
EDIT 2: For getting selected items from adapter define below method in
adapter and call it with an adapter object like : adp.getSelected()
public String getSelected() {
String selectedString = "";
int num=0;
for (int i = 0; i < selected.size(); i++) {
if (selected.get(i)) {
num++;
if (num == 1) {
selectedString = mProductItems.get(i).getName();
} else {
selectedString += "," + mProductItems.get(i).getName();
}
}
}
return selectedString;
}
Answer to issue 2 : If you want to use ImageView instead of text color change. The do the same things as above but replace the TextView + Color with ImageView + Image.
EDIT 3:
You have called the getSelected() method from a Null object. Modify your code like this:
listView = (SwipeListView) findViewById(R.id.listview);
loadAdapter = new LoadAdapter(getApplicationContext(),array_list);
listView.setAdapter(loadAdapter);
det.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String str = "";
str = loadAdapter.getSelected();
Toast.makeText(RelationShipChartList.this, str, Toast.LENGTH_SHORT).show();
}
I have 3 arraylist that i have combined to show in listview. Wehen i click on to generate listview, it works fine the first time but when i hit back and then click the button again, the listview shows nothing. Not sure what is cause it. I checked other post but couldnt find an answer. I am not too good with Arraylist so any details would be greatly appreciated.
I have also noticed this message in Log cat. not sure what it means.
onVisibilityChanged() is called, visibility : 0
public class Edit extends Activity implements OnItemClickListener {
private int pic;
public String filename ="User Info";
//Declaring SHareddPreference as userprofile
static SharedPreferences userprofile;
ListView listView;
List<RowItem> rowItems;
// String[] titles, descriptions;
File imgpath=null;
Context context=this;
CustomListAdapter adapter;
private List<String> Titles = new ArrayList<String>();
private List<String> Actions = new ArrayList<String>();
private List<Bitmap> Images = new ArrayList<Bitmap>();
int x;
int y=1;
int z=1;
static int a=1;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.aname);
listView = (ListView)findViewById(R.id.listing);
userprofile = getSharedPreferences(filename,0);
Intent pdf=getIntent();
pic= userprofile.getInt("lastpic",pic);
x=pic;
Log.d("editpic",new Integer(pic).toString());
while(y!=x){
String comment = commentresult();
Titles.add(comment);
y++;
Log.d("y",new Integer(y).toString());
}
while(z!=x){
String act = actionresult();
Actions.add(act);
z++;
Log.d("z",new Integer(z).toString());}
while(a!=x){
Bitmap photo = getbitmap();
Images.add(photo);
a++;
Log.d("a",new Integer(a).toString());}
Titles.toArray();
Actions.toArray();
Images.toArray();
rowItems = new ArrayList<RowItem>();
for (int i = 0; i < Images.size(); i++) {
RowItem item = new RowItem(Images.get(i), Titles.get(i),Actions.get(i));
rowItems.add(item);
}
Log.d("TAG", "listview null? " + (listView == null));
CustomListAdapter adapter = new CustomListAdapter(this,
R.layout.aname_list_item, rowItems);
Log.d("TAG", "adapter=null? " + (adapter == null));
listView.setAdapter(adapter);
adapter.notifyDataSetChanged();
listView.setOnItemClickListener(this);
}
public static Bitmap getbitmap() {
String photo1 =userprofile.getString("picpath"+a, "");
File imgpath=new File(photo1);
ByteArrayOutputStream stream = new ByteArrayOutputStream();
Bitmap bmp=DecodeImage.decodeFile(imgpath, 800, 1000, true);
bmp.compress(Bitmap.CompressFormat.JPEG, 100 , stream);
Bitmap photo2=bmp;
return photo2;
}
#Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
Toast toast = Toast.makeText(getApplicationContext(),
"Item " + (position + 1) + ": " + rowItems.get(position),
Toast.LENGTH_SHORT);
toast.setGravity(Gravity.BOTTOM|Gravity.CENTER_HORIZONTAL, 0, 0);
toast.show();
}
public String commentresult()
{
// String com2 = null;
// while(y!=x){
String comment=userprofile.getString("comment"+y, "");
String com1=comment;
String com2=com1;
// }
return com2;
}
public String actionresult()
{
// String act2 = null;
// while(y!=x){
String action=userprofile.getString("action"+z, "");
String act1=action;
String act2=act1;
// }
return act2;
}
private static final long delay = 2000L;
private boolean mRecentlyBackPressed = false;
private Handler mExitHandler = new Handler();
private Runnable mExitRunnable = new Runnable() {
#Override
public void run() {
mRecentlyBackPressed=false;
}
};
#Override
public void onBackPressed() {
//You may also add condition if (doubleBackToExitPressedOnce || fragmentManager.getBackStackEntryCount() != 0) // in case of Fragment-based add
if (mRecentlyBackPressed) {
mExitHandler.removeCallbacks(mExitRunnable);
mExitHandler = null;
super.onBackPressed();
}
else
{
mRecentlyBackPressed = true;
Toast.makeText(this, "press again to exit", Toast.LENGTH_SHORT).show();
mExitHandler.postDelayed(mExitRunnable, delay);
}
}
#Override
public void onDestroy() {
// Destroy the AdView.
super.onDestroy();
}
Custom List Adapter:
public class CustomListAdapter extends ArrayAdapter<RowItem> {
Context context;
List<RowItem> items;
public CustomListAdapter(Context context, int resourceId,
List<RowItem> items) {
super(context, resourceId, items);
this.context = context;
this.items = items;
}
#Override
public int getCount() {
// TODO Auto-generated method stub
return items.size();
}
#Override
public RowItem getItem(int position) {
// TODO Auto-generated method stub
return items.get(position);
}
#Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
/*private view holder class*/
private class ViewHolder {
ImageView imageView;
TextView txtTitle;
TextView txtDesc;
}
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder = null;
RowItem rowItem = getItem(position);
LayoutInflater mInflater = (LayoutInflater) context
.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);
if (convertView == null) {
convertView = mInflater.inflate(R.layout.aname_list_item, null);
holder = new ViewHolder();
holder.txtDesc = (TextView) convertView.findViewById(R.id.desc);
holder.txtTitle = (TextView) convertView.findViewById(R.id.rab);
holder.imageView = (ImageView) convertView.findViewById(R.id.icon);
convertView.setTag(holder);
} else
holder = (ViewHolder) convertView.getTag();
// String name=items.get(position).getDesc();
holder.txtDesc.setText(rowItem.getDesc());
holder.txtTitle.setText(rowItem.getTitle());
holder.imageView.setImageBitmap(rowItem.getImageId());
// holder.imageView.setImageResource(Images.get(position) .getPlaceholderleft());
return convertView;
}
}
It looks like this is because you've made your variables x, y, z and a all static, which means there is a single instance of the variables shared by all instances of the class. Therefore, when you call onCreate the second time, all your while loop termination conditions are already met, so the while loops never execute. It's unclear to me why you've made these static, so unless you need them to be, you should remove the static keyword for these variables.
Why are you creating another object of ListView in onCreate() and onResume()
Remove code from onResume()
Also replace this line in onCreate()
old line ListView listView = (ListView)findViewById(R.id.listing);
New line listView = (ListView)findViewById(R.id.listing);
I am using BaseAdapter for loading the data in gridview. When the data is loaded to the gridview, and the user tries to scroll, I used to get incorrect data. In order to fix that I used ViewHolder. That actually fixed the issue, however, when the users click any of the data in the gridview, instead of getting the correct id from the item, all the items are returning a similar id number.
public class ProductAdapter extends BaseAdapter {
// Context context;
private Activity activity;
private ArrayList<HashMap<String, String>> data;
private static LayoutInflater inflater = null;
ViewHolder holder;
int layoutResourceId;
Event event;
EventDBAdapter eventDb;
int id;
PersianCalendar sc;
String Today;
SharedPreferences Prefrences_test;
String date, userid;
String newText = "";
String test;
int status;
MoodsDBAdapter moodsDBAdapter;
Mood mood;
ArrayList<MoodsNote> arrayMoodsNote;
MoodsNoteDBAdapter moodsNoteDBAdapter;
MoodsNote moodsNote;
public ProductAdapter(Activity a, ArrayList<HashMap<String, String>> d) {
activity = a;
// this.context = context;
eventDb = new EventDBAdapter(activity);
event = new Event();
moodsDBAdapter = new MoodsDBAdapter(activity);
mood = new Mood();
moodsNoteDBAdapter = new MoodsNoteDBAdapter(activity);
data = d;
// this.layoutResourceId = layoutResourceId;
inflater = (LayoutInflater) activity
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
Prefrences_test = activity.getSharedPreferences("temp", 0);
date = Prefrences_test.getString("date", "");
userid = Prefrences_test.getString("userid", "");
sc = new PersianCalendar();
Today = date;
eventDb = new EventDBAdapter(activity.getApplicationContext());
event = eventDb.getName(Today);
try {
arrayMoodsNote = moodsNoteDBAdapter.getItems(event.getID());
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
}
public int getCount() {
return data.size();
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent) {
View vi = convertView;
holder = null;
HashMap<String, String> song = new HashMap<String, String>();
song = data.get(position);
if (vi == null) {
vi = inflater.inflate(R.layout.note_mood_list_item, null);
holder = new ViewHolder();
holder.title = (TextView) vi.findViewById(R.id.mood_text);
holder.txt_id = (TextView) vi.findViewById(R.id.txt_id_mood);
holder.thumb_image = (ImageView) vi.findViewById(R.id.mood_img);
holder.linear = (LinearLayout) vi.findViewById(R.id.mood_layout);
vi.setTag(holder);
} else {
holder = (ViewHolder) vi.getTag();
}
holder.linear.setBackgroundResource(R.drawable.bg_mood);
//holder.txt_id.setText("");
String titles = song.get("name");
holder.title.setText(titles);
Resources res = activity.getResources();
int resourceId = res.getIdentifier(song.get("icon"), "drawable",
activity.getPackageName());
holder.thumb_image.setBackgroundResource(resourceId);
holder.txt_id.setText(song.get("id"));
try {
for (MoodsNote m : arrayMoodsNote) {
int moodd = m.getMOOD();
if (Integer.parseInt(holder.txt_id.getText().toString()) == moodd)
{
holder.linear.setBackgroundResource(R.drawable.bg_mood_on);
}
}
} catch (Exception e) {
// TODO: handle exception
}
holder.thumb_image.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View arg0) {
// TODO Auto-generated method stub
Toast.makeText(activity, holder.txt_id.getText().toString(), 0).show();
status = 1;
event = new Event();
int tedad = eventDb.getDate(date);
if (tedad <= 0) {
event = new Event(userid, date);
eventDb.insert(event);
}
event = eventDb.getName(date);
moodsNote = new MoodsNote();
id = 0;
id = Integer.parseInt(holder.txt_id.getText().toString());
// id = rowItem.getID();
int tedadd = moodsNoteDBAdapter.getLastItemID(id);
if (tedadd <= 0)
{
moodsNote.setMOOD(id);
moodsNote.setEVENT(event.getID());
moodsNoteDBAdapter.insert(moodsNote);
holder.linear.setBackgroundResource(R.drawable.bg_mood_on);
}
else {
moodsNoteDBAdapter.deleteId(id);
holder.linear.setBackgroundResource(R.drawable.bg_mood);
}
}
});
return vi;
}
static class ViewHolder {
ImageView thumb_image;
TextView txt_id, title;
LinearLayout linear;
}
I have fetched images and text as listview from database.now on clicking the particular text or image i should print same text.
Eg: if i click the listview of food menu then it should print food menu.if i click list view of catalogue it should print the catalogue .
enter code here
JSONArray json = jArray.getJSONArray("mainmenu");
list=(ListView)findViewById(R.id.mainmenulist);
adapter=new MainMenulist(this, json);
list.setAdapter(adapter);
Main menu listview
public class MainMenulist extends BaseAdapter {
protected static Context Context = null;
int i;
String qrimage;
Bitmap bmp, resizedbitmap;
Bitmap[] bmps;
Activity activity = null;
private LayoutInflater inflater;
private ImageView[] mImages;
String[] itemimage;
TextView[] tv;
String itemname;
public String[] itemnames;
HashMap<String, String> map = new HashMap<String, String>();
public MainMenulist(Context context, JSONArray imageArrayJson) {
Context = context;
// inflater =
// (LayoutInflater)activity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
// imageLoader=new ImageLoader(activity);
inflater = LayoutInflater.from(context);
this.mImages = new ImageView[imageArrayJson.length()];
this.bmps = new Bitmap[imageArrayJson.length()];
this.itemnames = new String[imageArrayJson.length()];
try {
for (i = 0; i < imageArrayJson.length(); i++) {
JSONObject image = imageArrayJson.getJSONObject(i);
qrimage = image.getString("menuimage");
itemname = image.getString("menuname");
itemnames[i] = itemname;
byte[] qrimageBytes = Base64.decode(qrimage.getBytes());
bmp = BitmapFactory.decodeByteArray(qrimageBytes, 0,
qrimageBytes.length);
int width = 100;
int height = 100;
resizedbitmap = Bitmap.createScaledBitmap(bmp, width, height,
true);
bmps[i] = bmp;
mImages[i] = new ImageView(context);
mImages[i].setImageBitmap(resizedbitmap);
mImages[i].setScaleType(ImageView.ScaleType.FIT_START);
// tv[i].setText(itemname);
}
System.out.println(itemnames[i]);
System.out.println(map);
} catch (Exception e) {
// TODO: handle exception
}
}
public int getCount() {
return mImages.length;
}
public Object getItem(int position) {
return position;
}
public long getItemId(int position) {
return position;
}
public View getView(final int position, View convertView, ViewGroup parent) {
View vi = convertView;
vi = inflater.inflate(R.layout.mainmenulistview, null);
TextView text = (TextView) vi.findViewById(R.id.menutext);
ImageView image = (ImageView) vi.findViewById(R.id.menuimage);
image.setImageBitmap(bmps[position]);
text.setText(itemnames[position]);
text.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
if (itemnames[position].equals("Food Menu")) {
Intent intent = new Intent(Context, FoodMenu.class);
System.out.println("prakash");
Context.startActivity(intent);
}
}
});
return vi;
}
}
i can fetch all items in menulistview.java please tell me how to get particular list view click means particular item prints
Check below code
text.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
if (itemnames[position].equals("Food Menu")) {
Intent intent = new Intent(Context, FoodMenu.class);
System.out.println("prakash");
System.out.println(v.getText().toString());
Context.startActivity(intent);
}
}
});
Think you want to print name as you suggested at the place of your
System.out.println statement
Use the below link which shows a sample app and also how to use custom adapter.including the click events
http://www.codeproject.com/Articles/183608/Android-Lists-ListActivity-and-ListView-II-Custom
try below::
text.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent = new Intent(Context, FoodMenu.class);
System.out.println(itemnames[position]);
System.out.println(text.getText().toString());
Context.startActivity(intent);
}
}
});