Develop Reference

My object class doesn't want to be passed with Intent.putExtra/Intent.getExtra

I have a object class that I want to use it between activities.
I used exactly the same method for another activities and worked perfectly fine. But here I can't figure it out what I am doing wrong. This is the object class :
`package com.mecachrome.ffbf;
import android.os.Parcel;
import android.os.Parcelable;
public class topic implements Parcelable {
public static Creator<topic> getCREATOR() {
return CREATOR;
}
public static final Creator<topic> CREATOR = new Creator<topic>() {
#Override
public topic createFromParcel(Parcel in) {
return new topic(in);
}
#Override
public topic [] newArray(int size) {
return new topic[size];
}
};
private String name;
private String comment;
private String id;
private String username;
public topic() {
}
public topic(String name, String comment, String id, String username) {
this.name = name;
this.comment = comment;
this.id = id;
this.username = username;
}
protected topic(Parcel in) {
name = in.readString();
comment = in.readString();
id = in.readString();
username = in.readString();
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getComment() {
return comment;
}
public void setComment(String comment) {
this.comment = comment;
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
#Override
public String toString() {
return "topic{" +
"name='" + name + '\'' +
", comment='" + comment + '\'' +
", id='" + id + '\'' +
", username='" + username + '\'' +
'}';
}
#Override
public int describeContents() {
return 0;
}
#Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeString(name);
dest.writeString(comment);
dest.writeString(id);
dest.writeString(username);
}
}`
This is the class that I want to take the object from:
`package com.mecachrome.ffbf;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import android.content.Intent;
import android.os.Bundle;
import android.widget.Button;
import android.widget.Toast;
import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.ValueEventListener;
import java.util.ArrayList;
public class forum extends AppCompatActivity {
RecyclerView rv_forum;
forumAdapter myadapter;
Button add_topic;
Button test;
DatabaseReference databaseref;
private ArrayList<topic> topicList;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_forum);
add_topic = findViewById(R.id.btn_new_topic);
rv_forum = findViewById(R.id.rv_topics);
rv_forum.setHasFixedSize(true);
rv_forum.setLayoutManager(new LinearLayoutManager(this));
test = findViewById(R.id.test_btn);
topicList = new ArrayList<>();
databaseref = FirebaseDatabase.getInstance().getReference("forum_topics");
databaseref.addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(#NonNull DataSnapshot snapshot) {
for (DataSnapshot dss: snapshot.getChildren()){
topic top = dss.getValue(topic.class);
topicList.add(top);
}
myadapter = new forumAdapter(forum.this, topicList, mTopic -> {
Intent intent = new Intent(forum.this, topic_chat.class);
intent.putExtra("topic",mTopic);
startActivity(intent);
});
rv_forum.setAdapter(myadapter);
}
#Override
public void onCancelled(#NonNull DatabaseError error) {
Toast.makeText(forum.this, error.getMessage(), Toast.LENGTH_SHORT).show();
}
});
add_topic.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent i = new Intent(forum.this, add_new_topic.class);
startActivity(i);
}
});
}
}`
And this is the class that I want to transfer the object to:
`package com.mecachrome.ffbf;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import com.google.firebase.database.DataSnapshot;
import com.google.firebase.database.DatabaseError;
import com.google.firebase.database.DatabaseReference;
import com.google.firebase.database.FirebaseDatabase;
import com.google.firebase.database.ValueEventListener;
import java.text.DateFormat;
import java.util.ArrayList;
import java.util.Calendar;
public class topic_chat extends AppCompatActivity {
RecyclerView rv_chat;
chatAdapter myadapter;
Button send;
TextView topic_name;
TextView chat_text;
String chat;
private topic mTopic;
private ArrayList<chat> chatList;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_topic_chat);
mTopic = getIntent().getParcelableExtra("topic");
send = findViewById(R.id.btn_send_chat);
rv_chat = findViewById(R.id.rv_topics);
rv_chat.setHasFixedSize(true);
rv_chat.setLayoutManager(new LinearLayoutManager(this));
topic_name = findViewById(R.id.tv_topic_name);
chat_text = findViewById(R.id.et_comment);
chat = chat_text.getText().toString().trim();
chatList = new ArrayList<>();
DatabaseReference databaseref = FirebaseDatabase.getInstance().getReference("forum_topics").child(mTopic.getId()).child("chat");
topic_name.setText(mTopic.getName());
Calendar calendar = Calendar.getInstance();
String currentDate = DateFormat.getDateInstance(DateFormat.SHORT).format(calendar.getTime());
chatList = new ArrayList<>();
databaseref.addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(#NonNull DataSnapshot snapshot) {
for (DataSnapshot dss: snapshot.getChildren()){
chat mess = dss.getValue(chat.class);
chatList.add(mess);
}
myadapter = new chatAdapter(topic_chat.this, chatList, chat -> {
Intent intent = new Intent(topic_chat.this, topic_chat.class);
startActivity(intent);
});
rv_chat.setAdapter(myadapter);
}
#Override
public void onCancelled(#NonNull DatabaseError error) {
Toast.makeText(topic_chat.this, error.getMessage(), Toast.LENGTH_SHORT).show();
}
});
send.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
chat msg = new chat(mTopic.getName(),chat,mTopic.getId(),currentDate);
databaseref.setValue(msg).addOnCompleteListener(task1 -> {
if (task1.isSuccessful()){
Toast.makeText(topic_chat.this, "Review was been added Successfully", Toast.LENGTH_LONG).show();
}else{
Toast.makeText(topic_chat.this, "Review failed to post. Try Again!", Toast.LENGTH_SHORT).show();
}
});;
}
});
}
}`
The object class is "topic"
The error:
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String com.mecachrome.ffbf.topic.getId()' on a null object reference
On this line
DatabaseReference databaseref = FirebaseDatabase.getInstance().getReference("forum_topics").child(mTopic.getId()).child("chat");
because mTopic.getId() is null. Any help?

Android app crashes and shows error on rooturl

public class Constant {
public static final String FIREBASE_CHAT_URL="https://roadcaremap.firebaseio.com/";
public static final String CHILD_USERS="users";
public static final String CHILD_CHAT="chat";
public static final String KEY_SEND_USER="key_send_user";
public static final String CHILD_CONNECTION="connecttion";
public static final String CHILD_LATITUDE="latitude";
public static final String CHILD_LONGITUDE="longitude";
public static final String KEY_EMAIL="email";
public static final String KEY_ONLINE="online";
public static final String KEY_OFFLINE="offline";
public static final String KEY_CLOSE="key_close";
}
I'm new to android. Recently, I encountered a problem when running the application on my device. The app crashes and shows me an error on this line which I do not know how to solve. I've added the code and picture of the logcat. Any help would be much appreciated. The error is shown in this line.
rootUrl = new Firebase(Constant.FIREBASE_CHAT_URL);
package com.snapsofts.demogmap.activity;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Color;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.TextView;
import com.firebase.client.AuthData;
import com.firebase.client.ChildEventListener;
import com.firebase.client.DataSnapshot;
import com.firebase.client.Firebase;
import com.firebase.client.FirebaseError;
import com.firebase.client.ValueEventListener;
import com.firebase.ui.auth.AuthUI;
import com.google.firebase.auth.FirebaseAuth;
import com.google.gson.Gson;
import com.snapsofts.demogmap.R;
import com.snapsofts.demogmap.Services.LocationService;
import com.snapsofts.demogmap.common.Constant;
import com.snapsofts.demogmap.object.User;
import java.util.ArrayList;
import butterknife.BindView;
import butterknife.ButterKnife;
import butterknife.OnClick;
public class MainActivity extends AppCompatActivity {
private Firebase rootUrl;
private Firebase urlCurrenUser;
private Firebase urlAllUser;
private FirebaseAuth mAuth;
private Firebase.AuthStateListener mAuthStateListener;
private String currenUserId;
private String currenUserEmail;
private ArrayList<User> arrUser;
private AllUserAdapter allUserAdapter;
private ArrayList<String> arrStringEmail;
private ValueEventListener valueEventListenerUserConnected;
private User currenUser;
#BindView(R.id.btnLogout)
Button btnLogout;
#BindView(R.id.lvUser)
ListView lvUser;
#BindView(R.id.tvUsserName)
TextView tvUsserName;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ButterKnife.bind(this);
MainActivity.this.startService(new Intent(MainActivity.this, LocationService.class));
arrStringEmail = new ArrayList<>();
arrUser = new ArrayList<User>();
allUserAdapter = new AllUserAdapter(MainActivity.this, 0, arrUser);
lvUser.setAdapter(allUserAdapter);
lvUser.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Intent intent=new Intent(MainActivity.this,MapsActivity.class);
User user=arrUser.get(position);
Gson gson=new Gson();
intent.putExtra(Constant.KEY_SEND_USER,gson.toJson(user).toString()+"---"+gson.toJson(currenUser).toString());
startActivity(intent);
mAuth = FirebaseAuth.getInstance();
}
});
rootUrl = new Firebase(Constant.FIREBASE_CHAT_URL);
mAuthStateListener = new Firebase.AuthStateListener() {
#Override
public void onAuthStateChanged(AuthData authData) {
setAuthenticatedUser();
}
};
rootUrl.addAuthStateListener(mAuthStateListener);
}
private void setAuthenticatedUser () {
if (FirebaseAuth.getInstance().getCurrentUser() != null) {
currenUserId = FirebaseAuth.getInstance().getCurrentUser().getUid();
currenUserEmail = FirebaseAuth.getInstance().getCurrentUser().getEmail();
getCurrenUser();
getAllUser();
} else {
startActivity(new Intent(MainActivity.this, LoginActivity.class));
finish();
}
}
public void getCurrenUser() {
urlCurrenUser = new Firebase(Constant.FIREBASE_CHAT_URL).child(Constant.CHILD_USERS).child(FirebaseAuth.getInstance().getCurrentUser().getUid());
urlCurrenUser.addValueEventListener(valueEventListenerCurrenUser);
valueEventListenerUserConnected=rootUrl.getRoot().child(".info/connected").addValueEventListener(new ValueEventListener() {
#Override
public void onDataChange(DataSnapshot dataSnapshot) {
boolean connected = (Boolean) dataSnapshot.getValue();
if (connected) {
urlCurrenUser.child(Constant.CHILD_CONNECTION).setValue(Constant.KEY_ONLINE);
urlCurrenUser.child(Constant.CHILD_CONNECTION).onDisconnect().setValue(Constant.KEY_OFFLINE);
}
}
#Override
public void onCancelled(FirebaseError firebaseError) {
}
});
}
private ValueEventListener valueEventListenerCurrenUser = new ValueEventListener() {
#Override
public void onDataChange(DataSnapshot dataSnapshot) {
User user = dataSnapshot.getValue(User.class);
tvUsserName.setText("Hello "+user.name);
}
#Override
public void onCancelled(FirebaseError firebaseError) {
}
};
public void getAllUser() {
urlAllUser = new Firebase(Constant.FIREBASE_CHAT_URL).child(Constant.CHILD_USERS);
urlAllUser.addChildEventListener(childEventListenerAllUser);
}
private ChildEventListener childEventListenerAllUser = new ChildEventListener() {
#Override
public void onChildAdded(DataSnapshot dataSnapshot, String s) {
User user = dataSnapshot.getValue(User.class);
if (!dataSnapshot.getKey().equals(currenUserId)){
arrStringEmail.add(user.email);
arrUser.add(user);
allUserAdapter.notifyDataSetChanged();
}else {
currenUser=user;
}
}
#Override
public void onChildChanged(DataSnapshot dataSnapshot, String s) {
if (!dataSnapshot.getKey().equals(currenUserId)){
User user = dataSnapshot.getValue(User.class);
int index = arrStringEmail.indexOf(user.email);
arrUser.set(index, user);
allUserAdapter.notifyDataSetChanged();
}
}
#Override
public void onChildRemoved(DataSnapshot dataSnapshot) {
}
#Override
public void onChildMoved(DataSnapshot dataSnapshot, String s) {
}
#Override
public void onCancelled(FirebaseError firebaseError) {
}
};
#Override
protected void onDestroy() {
super.onDestroy();
try {
rootUrl.removeAuthStateListener(mAuthStateListener);
} catch (Exception e) {
}
try {
urlCurrenUser.removeEventListener(valueEventListenerCurrenUser);
} catch (Exception e) {
}
try {
urlAllUser.removeEventListener(childEventListenerAllUser);
} catch (Exception e) {
}
try {
rootUrl.getRoot().child(".info/connected").removeEventListener(valueEventListenerUserConnected);
}catch (Exception e){}
}
#OnClick(R.id.btnLogout)
public void btnLogout() {
if (FirebaseAuth.getInstance().getCurrentUser() != null) {
stopService(new Intent(this, LocationService.class));
AuthUI.getInstance().signOut(this);
Intent intent = new Intent(getApplicationContext(), LoginActivity.class);
startActivity(intent);
finish();
}
}
public class AllUserAdapter extends ArrayAdapter<User> {
private Activity mActivity;
private ArrayList<User> mArrUser;
#BindView(R.id.tvNameUser)
TextView tvNameUser;
#BindView(R.id.tvStatus)
TextView tvStatus;
public AllUserAdapter(Activity mActivity, int resource, ArrayList<User> mArrUser) {
super(mActivity, resource, mArrUser);
this.mActivity = mActivity;
this.mArrUser = mArrUser;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
LayoutInflater layoutInflater = mActivity.getLayoutInflater();
convertView = layoutInflater.inflate(R.layout.item_list_user, null);
}
ButterKnife.bind(this, convertView);
tvNameUser.setText(mArrUser.get(position).name);
tvStatus.setText(mArrUser.get(position).connecttion);
if (mArrUser.get(position).connecttion.equals(Constant.KEY_ONLINE)){
tvStatus.setTextColor(Color.parseColor("#00FF00"));
}else {
tvStatus.setTextColor(Color.parseColor("#FF0000"));
}
return convertView;
}
}
}
logcat

Unable to receive the string Id from the listitem clicked in android

I want to receive the value of the variable Id from the listItem clicked and to pass it in the other activity.But I am not receiving anything in the variable.
Here is the attached code :
MainActivity.java
package com.example.hp.citysearchapp;
import android.app.ProgressDialog;
import android.content.Intent;
import android.support.design.widget.TextInputLayout;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.view.menu.ExpandedMenuView;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.VolleyLog;
import com.android.volley.toolbox.JsonArrayRequest;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
public class MainActivity extends AppCompatActivity {
private static final String TAG = MainActivity.class.getSimpleName();
private ProgressDialog pDialog;
private List<City> cityList = new ArrayList<City>();
private ListView listView;
private static String url;
ImageView searchIcon;
String idGet;
String edittextSearch;
TextInputLayout searchLayout;
EditText search;
private CustomListAdapter adapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
listView = (ListView)findViewById(R.id.city_listView);
searchLayout=(TextInputLayout)findViewById(R.id.input_layout_search);
search=(EditText)findViewById(R.id.input_search);
searchIcon=(ImageView)findViewById(R.id.imageView);
adapter = new CustomListAdapter(this,cityList);
searchIcon.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
edittextSearch=search.getText().toString();
Log.d("hello2", search.getText().toString());
adapter.notifyDataSetChanged();
url = "http://test.maheshwari.org/services/testwebservice.asmx/SuggestCity?tryValue="+edittextSearch;
parsingMethod();
}
});
listView.setAdapter(adapter);
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Intent intent = new Intent(MainActivity.this,CityDetailsActivity.class);
City city = cityList.get(position);
idGet=city.getId();
Log.d("dfjdkfj", idGet); //Not receiving anything ,here is the problem
intent.putExtra("gettingId",idGet);
startActivity(intent);
}
});
}
private void parsingMethod() {
Log.d("hello", url);
pDialog = new ProgressDialog(this);
// Showing progress dialog
pDialog.setMessage("Loading...");
pDialog.show();
// Creating volley request obj
JsonArrayRequest cityReq = new JsonArrayRequest(url,
new Response.Listener<JSONArray>() {
#Override
public void onResponse(JSONArray jsonArray) {
hidePDialog();
// Parsing json
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject obj = null;
try {
obj = jsonArray.getJSONObject(i);
} catch (JSONException e) {
e.printStackTrace();
}
City city = new City();
try {
city.setId(obj.getString("Id"));
city.setTitle(obj.getString("Title"));
city.setDescription(obj.getString("Description"));
city.setExv1(obj.getString("ExtraValue1"));
Log.d("hello",obj.getString("ExtraValue1"));
city.setExv2(obj.getString("ExtraValue2"));
city.setExv3(obj.getString("ExtraValue3"));
city.setExv4(obj.getString("ExtraValue4"));
city.setExv5(obj.getString("ExtraValue5"));
city.setExv6(obj.getString("ExtraValue6"));
city.setExv7(obj.getString("ExtraValue7"));
city.setExv8(obj.getString("ExtraValue8"));
city.setExv9(obj.getString("ExtraValue9"));
cityList.add(city);
} catch (JSONException e) {
e.printStackTrace();
}
}
// notifying list adapter about data changes
// so that it renders the list view with updated data
adapter.notifyDataSetChanged();
}
}, new Response.ErrorListener()
{
#Override
public void onErrorResponse (VolleyError error){
VolleyLog.d(TAG, "Error: " + error.getMessage());
hidePDialog();
}
});
// Adding request to request queue
AppController.getInstance().addToRequestQueue(cityReq);
}
#Override
public void onDestroy() {
super.onDestroy();
hidePDialog();
}
private void hidePDialog() {
if (pDialog != null) {
pDialog.dismiss();
pDialog = null;
}
}
}
City.java
package com.example.hp.citysearchapp;
/**
* Created by hp on 22-03-2016.
*/
public class City {
String title,description,exv1,exv3,exv6,id,exv2,exv4,exv5,exv9,exv7,exv8;
public City(String title, String description, String id, String exv1, String exv3, String exv6,
String exv2, String exv4 , String exv5 , String exv7 , String exv8 , String exv9) {
this.title = title;
this.description=description;
this.id=id;
this.exv1=exv1;
this.exv2=exv2;
this.exv3=exv3;
this.exv4=exv4;
this.exv5=exv5;
this.exv6=exv6;
this.exv7=exv7;
this.exv8=exv8;
this.exv9=exv9;
}
public City() {
}
public String getId() {
return id;
}
public String getExv2() {
return exv2;
}
public String getExv4() {
return exv4;
}
public String getExv5() {
return exv5;
}
public String getExv7() {
return exv7;
}
public String getExv8() {
return exv8;
}
public String getExv9() {
return exv9;
}
public String getTitle() {
return title;
}
public String getDescription() {
return description;
}
public String getExv1() {
return exv1;
}
public String getExv3() {
return exv3;
}
public String getExv6() {
return exv6;
}
public void setId(String id) {
this.id = id;
}
public void setExv2(String exv2) {
this.exv2 = exv2;
}
public void setExv4(String exv4) {
this.exv4 = exv4;
}
public void setExv5(String exv5) {
this.exv5 = exv5;
}
public void setExv7(String exv7) {
this.exv7 = exv7;
}
public void setExv8(String exv8) {
this.exv8 = exv8;
}
public void setExv9(String exv9) {
this.exv9 = exv9;
}
public void setTitle(String title) {
this.title = title;
}
public void setDescription(String description) {
this.description = description;
}
public void setExv1(String exv1) {
this.exv1 = exv1;
}
public void setExv3(String exv3) {
this.exv3 = exv3;
}
public void setExv6(String exv6) {
this.exv6 = exv6;
}
}

Please modify your code a bit to achieve this --
You already have --
City city = cityList.get(position);
Now add this line to get Id from the ListItem clicked --
String Id = city.getExv3(); //Use one of your actual Getter methods accordingly.
Hope this helps!

Since I'm using a CustomAdapter for my list , I have to use the following code :
TextView textView = (TextView)view.findViewById(R.id.id); /*(R.id.id) is the id of the textview */
String gettingID=textView.getText().toString();

How to pass List of list of objects from one activity to another

I need to pass an arraylist which contains object with a string and arraylist. I am unable to pass the arraylist to other activity. In the Activity1 the list contains value that I have verified.
DepositBn:
package support;
import android.os.Parcel;
import android.os.Parcelable;
import com.google.gson.annotations.SerializedName;
import java.util.ArrayList;
public class DepositBn implements Parcelable {
private String limit;
#SerializedName("period")
private ArrayList<Rate> rateList;
protected DepositBn(Parcel in) {
limit = in.readString();
}
public String getLimit() {
return limit;
}
public void setLimit(String limit) {
this.limit = limit;
}
public ArrayList<Rate> getRateList() {
return rateList;
}
public void setRateList(ArrayList<Rate> rateList) {
this.rateList = rateList;
}
public class Rate {
private String rate;
public String getRate() {
return rate;
}
public void setRate(String rate) {
this.rate = rate;
}
}
#Override
public int describeContents() {
return 0;
}
#Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeString(limit);
}
public static final Creator<DepositBn> CREATOR = new Creator<DepositBn>() {
#Override
public DepositBn createFromParcel(Parcel in) {
return new DepositBn(in);
}
#Override
public DepositBn[] newArray(int size) {
return new DepositBn[size];
}
};
}
In the Activity1:
#Override
protected void onPostExecute(ArrayList<DepositBn> result) {
super.onPostExecute(result);
System.out.println("result = " + result);
for (DepositBn depositBn : result) {
System.out.println("----" + depositBn.getLimit());
}
try {
Intent intent = new Intent(DepositRates.this, GenericRateDisplay.class);
Resources res = DepositRates.this.getResources();
Bundle bundle = new Bundle();
bundle.putParcelableArrayList("depositBnArrayList",result);
bundle.putString("pageName", res.getString(R.string.domesticRates));
intent.putExtras(bundle);
startActivity(intent);
} catch (Exception ex) {
ex.printStackTrace();
}
}
In Activity2:
package in.co.sbm.sbmvirtual;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import java.util.ArrayList;
import support.DepositBn;
public class GenericRateDisplay extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_generic_rate_display);
Bundle b = this.getIntent().getExtras();
ArrayList<DepositBn> depositBnArrayList = b.getParcelableArrayList("depositBnArrayList");
//String pageName = b.getString("pageName");
ArrayList<String> rateList = new ArrayList();
for (DepositBn depositBn : depositBnArrayList) {
for(DepositBn.Rate rate : depositBn.getRateList()){
rateList.add(rate.toString());
}
}
ArrayAdapter<String> adapter = new ArrayAdapter<String>(GenericRateDisplay.this,
android.R.layout.simple_list_item_1, rateList);
ListView listView = (ListView) findViewById(R.id.genericListView);
listView.setAdapter(adapter);
}
}

I have fixed it. I have used inner class as well which I did not serialize hence I was unable to use putSerializable. I have serialized both the outer and inner class and used intent.putSerializable.

Fetching data from Kinvey backend

I am using kinvey as my backend where I have a collection and would like to fetch data using appData.get. I have tried using the code below but it doesnt work. Could someone please tell me whats wrong with it.
package com.example.kinvey;
import com.kinvey.android.AsyncAppData;
import com.kinvey.android.callback.KinveyListCallback;
import com.kinvey.java.core.KinveyClientCallback;
import android.app.Activity;
import android.content.Entity;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.widget.Toast;
public class ActionData extends Activity{
//protected static final String TAG = "LOG:";
public static final String TAG = "ActionData";
#Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.display);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// TODO Auto-generated method stub
return super.onCreateOptionsMenu(menu);
}
public void onLoadClick(View view) {
AsyncAppData<Entity> myevents = MainActivity.mKinveyClient.appData("events",Entity.class);
myevents.get(new KinveyListCallback<Entity>() {
#Override
public void onSuccess(Entity[] result) {
Log.v(TAG, "received "+ result.length + " events");
}
#Override
public void onFailure(Throwable error) {
Log.e(TAG, "failed to fetch all", error);
}
});
}
And this is my Entity class.
package com.example.kinvey;
import com.google.api.client.json.GenericJson;
import com.google.api.client.util.Key;
import com.kinvey.java.model.KinveyMetaData;
public class Entity extends GenericJson{
#Key("_id")
private String id;
#Key("_class")
private String _class;
#Key("author")
private String author;
#Key("relatedObj")
private String relatedObj;
#Key("relatedObjName")
private String relatedObjName;
#Key("type")
private String type;
#Key("_kmd")
private KinveyMetaData meta;
#Key("_acl")
private KinveyMetaData.AccessControlList acl;
public Entity(){}
public String getActionId() {
return id;
}
public void setActionId(String id) {
this.id = id;
}
public String getclass() {
return _class;
}
public void setclass(String _class) {
this._class = _class;
}
public String getAuthor() {
return author;
}
public void setAuthor(String author) {
this.author = author;
}
public String getRelatedObj() {
return relatedObj;
}
public void setRelatedObj(String relatedObj) {
this.relatedObj = relatedObj;
}
public String getRelatedObjName() {
return relatedObjName;
}
public void setRelatedObjName(String relatedObjName) {
this.relatedObjName = relatedObjName;
}
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
}