Develop Reference

How to access json array (Android)

I'm creating a weather app using the openweathermap api, and need to access the elements of a json array called "list". It contains the weather forecast for the next several days. I'm using retrofit to parse all the json data as well. Problem is that I cannot access the array at all. I can access the elements of city, however.
json structure
main class
forecast output data
forecast list
forecast item
Retrofit retrofit = new Retrofit.Builder()
.baseUrl("http://api.openweathermap.org")
.addConverterFactory(JacksonConverterFactory.create())
.build();
final WeatherService service = retrofit.create(WeatherService.class);
final WeatherForecast forecast = retrofit.create(WeatherForecast.class);
sendButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Call<ForecastOutputData> callForecastRequest = forecast.getWeatherInfo(Double.toString(lat), Double.toString(lon), "imperial", "5", "key");
callForecastRequest.enqueue(new Callback<ForecastOutputData>() {
#Override
public void onResponse(Call<ForecastOutputData> forecastCall, Response<ForecastOutputData> forecastResponse) {
ForecastOutputData forecastData = forecastResponse.body();
Log.d("GHEY",forecastData.getCity().getName());
Test.setText("Test " + forecastData.getList);
}
#Override
public void onFailure(Call<ForecastOutputData> call, Throwable t) {
Log.e("mytag", "mymessage",t);
Test.setText("Test FAIL");
}
});
}
});
}
#JsonIgnoreProperties(ignoreUnknown = true)
public class ForecastOutputData {
private int cnt;
private String cod;
private double message;
private List<ForecastList> forecastData;
private City city;
public String getCod() {
return cod;
}
public void setCod(String cod) {
this.cod = cod;
}
public int getCnt() {
return cnt;
}
public void setCnt(int cnt) {
this.cnt = cnt;
}
public List<ForecastList> getForecastData() {
return forecastData;
}
public void setForecastData(List<ForecastList> forecastData) {
this.forecastData = forecastData;
}
public City getCity() {
return city;
}
public void setCity(City city) {
this.city = city;
}
public double getMessage() {
return message;
}
public void setMessage(double message) {
this.message = message;
}
}
import java.util.List;
class ForecastList {
private int dt;
private Main main;
private List<Weather> weather;
private Clouds clouds;
private Wind wind;
private Sys sys;
private String dtTxt;
public int getDt() {
return dt;
}
public void setDt(int dt) {
this.dt = dt;
}
public Main getMain() {
return main;
}
public void setMain(Main main) {
this.main = main;
}
public Clouds getClouds() {
return clouds;
}
public void setClouds(Clouds clouds) {
this.clouds = clouds;
}
public Wind getWind() {
return wind;
}
public void setWind(Wind wind) {
this.wind = wind;
}
public Sys getSys() {
return sys;
}
public void setSys(Sys sys) {
this.sys = sys;
}
public String getDtTxt() {
return dtTxt;
}
public void setDtTxt(String dtTxt) {
this.dtTxt = dtTxt;
}
public List<Weather> getWeather() {
return weather;
}
public void setWeather(List<Weather> weather) {
this.weather = weather;
}
public class ForecastItem {
private String cod;
private double message;
private int cnt;
private List<ForecastList> list;
private City city;
public String getCod() {
return cod;
}
public void setCod(String cod) {
this.cod = cod;
}
public double getMessage() {
return message;
}
public void setMessage(double message) {
this.message = message;
}
public int getCnt() {
return cnt;
}
public void setCnt(int cnt) {
this.cnt = cnt;
}
public List<ForecastList> getList() {
return list;
}
public void setList(List<ForecastList> list) {
this.list = list;
}
public City getCity() {
return city;
}
public void setCity(City city) {
this.city = city;
}
}

Try it
#JsonIgnoreProperties(ignoreUnknown = true)
class ForecastResponse {
private String cod;
private String message;
private City city;
#JsonProperty("list")
private List<ForecastItem> list;
}
public class ForecastItem {
private int dt;
//dt, main, weather, clouds etc
}

Realm in android

I want to use two class for database.
here is my source.
public class UserInfo extends RealmObject {
private String user_email;
private String nick_name;
private String expected_date;
private boolean initial_autho;
private int resultDay;
public int getResultDay() {
return resultDay;
}
public void setResultDay(int resultDay) {
this.resultDay = resultDay;
}
public String getUser_email() {
return user_email;
}
public void setUser_email(String user_email) {
this.user_email = user_email;
}
public String getNick_name() {
return nick_name;
}
public void setNick_name(String nick_name) {
this.nick_name = nick_name;
}
public String getExpected_date() {
return expected_date;
}
public void setExpected_date(String expected_date) {
this.expected_date = expected_date;
}
public boolean getInitial_autho() {
return initial_autho;
}
public void setInitial_autho(boolean initial_autho) {
this.initial_autho = initial_autho;
}
}
public class Calendar extends Realmobject {
private long millis;
private String note; // 노트
private String mail; // who
private int image; // image resource
public String getMail() {
return mail;
}
public void setMail(String mail) {
this.mail = mail;
}
public long getTime() {
return millis;
}
public String getNote() {
return note;
}
public int getImage() {
return image;
}
public void setDate(long time) {
this.millis = time;
}
public void setNote(String note) {
this.note = note;
}
public void setImage(int image) {
this.image = image;
}
}
How do I use these things in Activity?
I don't know exactly and I much appreciate if you guys could tell about that more specifically as much as you can.

Fetching json object from JSON string

I am new to Android and I am developing app which has server side functionality. I am getting response in JSON format.
My response is shown as this image.
I know how to parse json using Volley but I don't know hot to parse using GSON. Previous code of my app was written by some one else. Now I have to complete this code. but I do not know how he getting data from JSON string.
I need JSON arrays in different activity. Array response:
image
Here is some snaps of my code.
Code for adapter for activity one
topicListAdapter = new TopicListAdapter(TopicActivity.this,
myCourseListMain. getCourseArrayList().get(Integer.parseInt(course_position)).
getTopicListMain().getTopicDetailsArrayList(), flag);
listAlltopics.setAdapter(topicListAdapter);
in which I got list of topics
here is code for second activity list adapter
lessionListAdapter = new LessionListAdapter(LessionActivity.this,
myCourseListMain. getCourseArrayList(). get(Integer.parseInt(course_position)).
getTopicListMain().getTopicDetailsArrayList().get(Integer.parseInt(topic_position)).getLessionArrayList(), flag);
by this code i got array of lession in second activity
Now I want sublession array in third activity but I don't know how to get it.
Here is what I tried
lessionListAdapter = new DummyAdapter(DummyTopicList.this,
myCourseListMain . getCourseArrayList(). get(Integer.parseInt(course_position)).
getTopicListMain() . getTopicDetailsArrayList() .get(Integer.parseInt(topic_position)).
getLessionLIstMain() .getLessionLIstDetailArrayList().get(Integer.parseInt(lession_position)). , flag);
listAlllessions.setAdapter(lessionListAdapter);
Here are some other classes which helpful to you for understand
public class MyCourseListMain {
#SerializedName("data")
private ArrayList<Course> courseArrayList;
public ArrayList<Course> getCourseArrayList() {
return courseArrayList;
}
public void setCourseArrayList(ArrayList<Course> courseArrayList) {
this.courseArrayList = courseArrayList;
}
}
class for course
public class Course {
#SerializedName("img")
private String img;
#SerializedName("title")
private String title;
#SerializedName("institute_id")
private String institute_id;
#SerializedName("institute_name")
private String institute_name;
#SerializedName("expired")
private String expired;
#SerializedName("status")
private String status;
#SerializedName("subscribe_box")
private String subscribe_box;
#SerializedName("expire_on")
private String expire_on;
#SerializedName("item_id")
private String item_id;
#SerializedName("rated")
private String rated;
private TopicListMain topicListMain;
public String getRated() {
return rated;
}
public void setRated(String rated) {
this.rated = rated;
}
public String getImg() {
return img;
}
public void setImg(String img) {
this.img = img;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getInstitute_id() {
return institute_id;
}
public void setInstitute_id(String institute_id) {
this.institute_id = institute_id;
}
public String getInstitute_name() {
return institute_name;
}
public void setInstitute_name(String institute_name) {
this.institute_name = institute_name;
}
public String getExpired() {
return expired;
}
public void setExpired(String expired) {
this.expired = expired;
}
public String getStatus() {
return status;
}
public void setStatus(String status) {
this.status = status;
}
public String getSubscribe_box() {
return subscribe_box;
}
public void setSubscribe_box(String subscribe_box) {
this.subscribe_box = subscribe_box;
}
public String getExpire_on() {
return expire_on;
}
public void setExpire_on(String expire_on) {
this.expire_on = expire_on;
}
public String getItem_id() {
return item_id;
}
public void setItem_id(String item_id) {
this.item_id = item_id;
}
public TopicListMain getTopicListMain() {
return topicListMain;
}
public void setTopicListMain(TopicListMain topicListMain) {
this.topicListMain = topicListMain; } }
class for topiclist_main
public class TopicListMain {
#SerializedName("data")
private ArrayList<TopicDetails> topicDetailsArrayList;
public ArrayList<TopicDetails> getTopicDetailsArrayList() {
return topicDetailsArrayList;
}
public void setTopicDetailsArrayList(ArrayList<TopicDetails> topicDetailsArrayList) {
this.topicDetailsArrayList = topicDetailsArrayList; }}
class for topic details
public class TopicDetails
{
#SerializedName("topic_id")
private String topic_id;
#SerializedName("title")
private String title;
#SerializedName("locked")
private String locked;
#SerializedName("lessons")
private ArrayList<Lession> lessionArrayList;
private LessionLIstMain lessionLIstMain;
public LessionLIstMain getLessionLIstMain() {
return lessionLIstMain;
}
public void setLessionLIstMain(LessionLIstMain lessionLIstMain) {
this.lessionLIstMain = lessionLIstMain;
}
public String getTopic_id() {
return topic_id;
}
public void setTopic_id(String topic_id) {
this.topic_id = topic_id;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getLocked() {
return locked;
}
public void setLocked(String locked) {
this.locked = locked;
}
public ArrayList<Lession> getLessionArrayList() {
return lessionArrayList;
}
public void setLessionArrayList(ArrayList<Lession> lessionArrayList) {
this.lessionArrayList = lessionArrayList; }}

https://github.com/google/gson
Make your object have same construct with your data which you got.And
YourObject val = new Gson().fromJson(new String(YourString.getBytes("ISO-8859-1"),
"UTF-8"), YourObject.class);

finally i got my solution by below code.
lessionListAdapter = new DummyAdapter(DummyTopicList.this,
myCourseListMain . getCourseArrayList(). get(Integer.parseInt(course_position)).
getTopicListMain() . getTopicDetailsArrayList() .get(Integer.parseInt(topic_position)).
getLessionArrayList().get(Integer.parseInt((lession_position))).getLessionLIstDetailArrayList() , flag);
listAlllessions.setAdapter(lessionListAdapter);
i also made some few classes to handle json array.
public class SubLessionDetail {
#SerializedName("lesson_id")
private String lession_id;
#SerializedName("title")
private String title;
#SerializedName("locked")
private String locked;
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getLocked() {
return locked;
}
public void setLocked(String locked) {
this.locked = locked;
}
public String getLession_id() {
return lession_id;
}
public void setLession_id(String lession_id) {
this.lession_id = lession_id;
}
}

Android Json parsing with GSON?

I am quite familiar with Json parsing with Gson. I have done Json parsing using Gson but recently i have multiple json objects with response, i am getting little bit stuck with parsing, here is my code,can anyone help me to solve my problem,that where i am doing wrong.
Thanks in advance
Here is my json response :-
Json response
Here is my POGO class of parsing :-
Style Profile.java
public class StyleProfile implements Parcelable {
#SerializedName("user_name")
#Expose
private String user_name;
#SerializedName("user_picture")
#Expose
private String user_picture;
#SerializedName("user_attr")
#Expose
private UserAttrEntity user_attr;
#SerializedName("user_attributes")
#Expose
private UserAttributes userAttributes;
#SerializedName("style_attr")
#Expose
private StyleAttr style_attr;
private StyleAttrEntity style_attrEntity;
private UserAttributesEntity user_attributes;
private String user_style;
#SerializedName("user_background_image")
#Expose
private String userBackgroundImage;
#SerializedName("user_style_message")
#Expose
private String userStyleMessage;
private String user_style_message;
private List<String> style_message;
public StyleProfile() {
}
protected StyleProfile(Parcel in)
{
user_name = in.readString();
user_picture = in.readString();
user_style = in.readString();
// style_message = in.readString();
}
public static final Creator<StyleProfile> CREATOR = new Creator<StyleProfile>() {
#Override
public StyleProfile createFromParcel(Parcel in) {
return new StyleProfile(in);
}
#Override
public StyleProfile[] newArray(int size) {
return new StyleProfile[size];
}
};
public StyleAttr getStyle_attr() {
return style_attr;
}
public void setStyle_attr(StyleAttr style_attr) {
this.style_attr = style_attr;
}
public String getName() {
return user_name;
}
public void setName(String name) {
this.user_name = name;
}
public String getImage() {
return user_picture;
}
public void setImage(String image) {
this.user_picture = image;
}
public UserAttrEntity getUser_attr() {
return user_attr;
}
public void setUser_attributes(UserAttributesEntity user_attributes) {
this.user_attributes = user_attributes;
}
public void setUser_style(String user_style) {
this.user_style = user_style;
}
public String getUser_style() {
return user_style;
}
public List<String> getStyle_message() {
return style_message;
}
public void setStyle_message(List<String> style_message) {
this.style_message = style_message;
}
public String getStyleMessageAsString() {
return TextUtils.join(". ", style_message);
}
public void setUser_style_message(String user_style_message) {
this.user_style_message = user_style_message;
}
public String getUser_style_message() {
return user_style_message;
}
public UserAttributesEntity getUser_attributes() {
return user_attributes;
}
public void setUser_attr(UserAttrEntity user_attr) {
this.user_attr = user_attr;
}
public UserAttributes getUserAttr() {
return userAttributes;
}
public void setUserAttr(UserAttributes userAttr) {
this.userAttributes = userAttr;
}
public UserAttributes getUserAttributes() {
return userAttributes;
}
public void setUserAttributes(UserAttributes userAttributes) {
this.userAttributes = userAttributes;
}
public String getUserStyle() {
return user_style;
}
public void setUserStyle(String userStyle) {
this.user_style = userStyle;
}
public String getUserBackgroundImage() {
return userBackgroundImage;
}
public void setUserBackgroundImage(String userBackgroundImage) {
this.userBackgroundImage = userBackgroundImage;
}
public String getUserStyleMessage() {
return userStyleMessage;
}
public void setUserStyleMessage(String userStyleMessage) {
this.userStyleMessage = userStyleMessage;
}
#Override
public int describeContents() {
return 0;
}
public StyleAttrEntity getStyle_attrEntity() {
return style_attrEntity;
}
public static Creator<StyleProfile> getCREATOR() {
return CREATOR;
}
#Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeString(user_name);
dest.writeString(user_picture);
dest.writeParcelable(user_attr, flags);
dest.writeParcelable(style_attr, flags);
dest.writeString(user_style);
}
public void setStyle_attrEntity(StyleAttrEntity style_attrEntity) {
this.style_attrEntity = style_attrEntity;
}
public static class StyleAttr implements Parcelable {
#SerializedName("Edgy")
#Expose
private Integer edgy;
#SerializedName("Feminine")
#Expose
private Integer feminine;
#SerializedName("Fashion Forward")
#Expose
private Integer fashionForward;
#SerializedName("Classic")
#Expose
private Integer classic;
#SerializedName("Casual")
#Expose
private Integer casual;
#SerializedName("Bohemian")
#Expose
private Integer bohemian;
protected StyleAttr(Parcel in) {
edgy = in.readInt();
casual = in.readInt();
classic = in.readInt();
edgy = in.readInt();
fashionForward = in.readInt();
feminine = in.readInt();
}
public static final Creator<StyleAttr> CREATOR = new Creator<StyleAttr>() {
#Override
public StyleAttr createFromParcel(Parcel in) {
return new StyleAttr(in);
}
#Override
public StyleAttr[] newArray(int size) {
return new StyleAttr[size];
}
};
public void setBohemian(int Bohemian) {
this.bohemian = Bohemian;
}
public void setCasual(int Casual) {
this.casual = Casual;
}
public void setClassic(int Classic) {
this.classic = Classic;
}
public void setEdgy(int Edgy) {
this.edgy = Edgy;
}
public void setFashionForward(int FashionForward) {
this.fashionForward = FashionForward;
}
public void setFeminine(int Feminine) {
this.feminine = Feminine;
}
public int getBohemian() {
return bohemian;
}
public int getCasual() {
return casual;
}
public int getClassic() {
return classic;
}
public int getEdgy() {
return edgy;
}
public int getFashionForward() {
return fashionForward;
}
public int getFeminine() {
return feminine;
}
#Override
public int describeContents() {
return 0;
}
#Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeInt(bohemian);
dest.writeInt(casual);
dest.writeInt(classic);
dest.writeInt(edgy);
dest.writeInt(fashionForward);
dest.writeInt(feminine);
}
}
}
UserAttrEntity.java
public class UserAttrEntity implements Parcelable {
#SerializedName("Size")
private String Size = "";
#SerializedName("Shape")
private String Shape = "";
#SerializedName("Bottoms Size")
private String Bottoms_Size = "";
#SerializedName("Height")
private String Height = "";
#SerializedName("Shoes Size")
private String Shoes_Size = "";
#SerializedName("Complexion")
private String Face_Color = "";
#SerializedName("Face Shape")
private String Face_Shape = "";
public UserAttrEntity() {
}
protected UserAttrEntity(Parcel in) {
Shape = in.readString();
Size = in.readString();
Bottoms_Size = in.readString();
Height = in.readString();
Shoes_Size = in.readString();
Face_Color = in.readString();
Face_Shape = in.readString();
}
public static final Creator<UserAttrEntity> CREATOR = new Creator<UserAttrEntity>() {
#Override
public UserAttrEntity createFromParcel(Parcel in) {
return new UserAttrEntity(in);
}
#Override
public UserAttrEntity[] newArray(int size) {
return new UserAttrEntity[size];
}
};
public void setShape(String Shape) {
this.Shape = Shape;
}
public void setSize(String Size) {
this.Size = Size.replace("\n", " ");
}
public void setBottoms_Size(String Bottoms_Size) {
this.Bottoms_Size = Bottoms_Size + " Inch";
}
public void setHeight(String Height) {
this.Height = Height;
}
public void setShoes_Size(String Shoes_Size) {
this.Shoes_Size = Shoes_Size;
}
public void setFace_Color(String Face_Color) {
this.Face_Color = Face_Color;
}
public void setFace_Shape(String Face_Shape) {
this.Face_Shape = Face_Shape;
}
public String getShape() {
return Shape;
}
public String getSize() {
return Size;
}
public String getBottoms_Size() {
return Bottoms_Size;
}
public String getHeight() {
return Height;
}
public String getShoes_Size() {
return Shoes_Size;
}
public String getFace_Color() {
return Face_Color;
}
public String getFace_Shape() {
return Face_Shape;
}
#Override
public int describeContents() {
return 0;
}
#Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeString(Shape);
dest.writeString(Size);
dest.writeString(Bottoms_Size);
dest.writeString(Height);
dest.writeString(Shoes_Size);
dest.writeString(Face_Color);
dest.writeString(Face_Shape);
}
}
User AttributesEntity.java
public class UserAttributes {
#SerializedName("Size")
#Expose
private Size size;
#SerializedName("Shape")
#Expose
private Shape shape;
#SerializedName("Bottoms Size")
#Expose
private BottomsSize bottomsSize;
#SerializedName("Height")
#Expose
private Height height;
#SerializedName("Shoes Size")
#Expose
private ShoesSize shoesSize;
#SerializedName("Complexion")
#Expose
private Complexion complexion;
#SerializedName("Face Shape")
#Expose
private FaceShape faceShape;
public Size getSize() {
return size;
}
public void setSize(Size size) {
this.size = size;
}
public Shape getShape() {
return shape;
}
public void setShape(Shape shape) {
this.shape = shape;
}
public BottomsSize getBottomsSize() {
return bottomsSize;
}
public void setBottomsSize(BottomsSize bottomsSize) {
this.bottomsSize = bottomsSize;
}
public Height getHeight() {
return height;
}
public void setHeight(Height height) {
this.height = height;
}
public ShoesSize getShoesSize() {
return shoesSize;
}
public void setShoesSize(ShoesSize shoesSize) {
this.shoesSize = shoesSize;
}
public Complexion getComplexion() {
return complexion;
}
public void setComplexion(Complexion complexion) {
this.complexion = complexion;
}
public FaceShape getFaceShape() {
return faceShape;
}
public void setFaceShape(FaceShape faceShape) {
this.faceShape = faceShape;
}
}
Style Profile.java
Here i am using it like this
Profile profile = gson.fromJson(obj.toString(), Profile.class);
Log.e("", "profile.getStatus() " + profile.getStatus());
mReceiver.onResponse(profile, tag);

Try this way
//Main data
public class MainData{
#SerializedName("status")
#Expose
private String status;
#SerializedName("data")
#Expose
private Data data;
}
//Data
public class Data {
#SerializedName("user_name")
#Expose
private String userName;
#SerializedName("user_picture")
#Expose
private String userPicture;
#SerializedName("user_attr")
#Expose
private UserAttr userAttr;
#SerializedName("user_attributes")
#Expose
private UserAttributes userAttributes;
#SerializedName("style_attr")
#Expose
private StyleAttr styleAttr;
#SerializedName("user_style")
#Expose
private String userStyle;
#SerializedName("user_background_image")
#Expose
private String userBackgroundImage;
#SerializedName("user_style_message")
#Expose
private String userStyleMessage;
}
//user_attr
public class UserAttr {
#SerializedName("user_attr")
private Map<String, String> userAttributes;
public Map<String, String> getUserAttributes() {
return userAttributes;
}
public void setUserAttributes(Map<String, String> userattributes) {
this.userAttributes= userattributes;
}
}
//user_attributes
public class UserAttributes {
#SerializedName("user_attributes")
private Map<String, CommonUserAttributes> userAttributes;
public Map<String, CommonUserAttributes> getUserAttributes() {
return userAttributes;
}
public void setUserAttributes(Map<String, CommonUserAttributes> userattributes) {
this.userAttributes = userattributes;
}
}
//StyleAttr
public class StyleAttr {
#SerializedName("style_attr")
private Map<String, Integer> styleAttributes;
public Map<String, Integer> getStyleAttributes() {
return styleAttributes;
}
public void setStyleAttributes(Map<String, Integer> styleAttributes) {
this.styleAttributes = styleAttributes;
}
}
//CommonUserAttributes
public class CommonUserAttributes {
#SerializedName("user_attr")
private String value;
#SerializedName("que_id")
private String bottmque_id;
public String getValue() {
return value;
}
public void setValue(String value) {
this.value = value;
}
public String getBottmque_id() {
return bottmque_id;
}
public void setBottmque_id(String bottmque_id) {
this.bottmque_id = bottmque_id;
}
}
put your get,set method yourself.

Save ArrayList<pojo> in SharedPreferences

I am using tabs which consist of fragment that has an arraylist of objects. I want to store my arraylist
list<Model_BarcodeDetail>
onStop() ie., I want to store my list that is present in my current tab when I navigate to another tab. I did the following code but it is giving me exception when I'm trying to save my list.
#Override
public void onPause() {
// TODO Auto-generated method stub
super.onPause();
System.out.println("=====pause");
saveDatas();
}
public void saveDatas() {
Log.d("msg", "Save Instance");
SharedPreferences.Editor outState = getActivity().getSharedPreferences(
"order", Context.MODE_APPEND).edit();
text = editText_barcode.getText().toString();
itemQuantity = editText_quantity.getText().toString();
outState.putString("saved", "true");
outState.putString("text", text);
outState.putString("title", job_name);
outState.putString("area", selected_area);
outState.putString("location", selected_loc);
outState.putString("quantity", itemQuantity);
//String strObject = gson.toJson(list, Model_BarcodeDetail.class);
//outState.putString("MyList", strObject);
POJO mPojo = new POJO();
mPojo.setData(list);
String strObject = gson.toJson(mPojo, POJO.class);
outState.putString("MyList", strObject);
outState.commit();
}
#Override
public void onActivityCreated(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onActivityCreated(savedInstanceState);
Bundle extras = getArguments();
/***** PUT DATA IN EDITTEXT if ITS AVAILABLE IN BUNDLE *****/
System.out.println("===jobname:"+job_name);
SharedPreferences orderData = getActivity().getSharedPreferences(
"order", Context.MODE_APPEND);
if (orderData != null) {
String a = orderData.getString("saved", "");
if (a != null && a.equalsIgnoreCase("true")) {
text = orderData.getString("text", "");
System.out.println("====tetx:" + text);
String title = orderData.getString("title", "");
System.out.println("===title: "+title+"===jobname: "+job_name);
if (title.equalsIgnoreCase(job_name)) {
editText_barcode.setText(text);
selected_area = orderData.getString("area", "");
selected_loc = orderData.getString("location", "");
itemQuantity = orderData.getString("quantity", "");
editText_quantity.setText(itemQuantity);
String json = orderData.getString("MyList", "");
List<Model_BarcodeDetail> list = gson.fromJson(json,
listOfObjects);
}
}
}
}
I'm getting the following exception when I add another tab:
12-09 12:08:28.072: E/AndroidRuntime(28616): FATAL EXCEPTION: main
12-09 12:08:28.072: E/AndroidRuntime(28616): Process: com.example.pdt, PID:
28616
12-09 12:08:28.072: E/AndroidRuntime(28616): java.lang.NullPointerException
12-09 12:08:28.072: E/AndroidRuntime(28616): at
com.example.pdt.Fragment_Main.saveDatas(Fragment_Main.java:446)
12-09 12:08:28.072: E/AndroidRuntime(28616): at
com.example.pdt.Fragment_Main.onPause(Fragment_Main.java:426)
12-09 12:08:28.072: E/AndroidRuntime(28616): at
android.support.v4.app.Fragment.performPause(Fragment.java:1950)
12-09 12:08:28.072: E/AndroidRuntime(28616): at
android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1005)
12-09 12:08:28.072: E/AndroidRuntime(28616): at
android.support.v4.app.FragmentManagerImpl.removeFragment(FragmentManager.java:1235)
EDIT:
Model_BarcodeDetail class:
package com.example.model;
public class Model_BarcodeDetail {
public String datetime, success, name, reference, description, price,
color, size, stock, branch, supplier, location, basesell, vat,
avg_cost, last_cost, next_cost, group_code, type, remarks1,
remarks2, listed_days, title, meta_keywords, meta_description,
job_id, total, fixedTotal, fixedPrice, aliascode, draftName,
itemBarcode, totalDiscount;
boolean priceEdited;
public boolean isPriceEdited() {
return priceEdited;
}
public void setPriceEdited(boolean priceEdited) {
this.priceEdited = priceEdited;
}
private String string_sale_return;
public String barcode, quantity = "0", area, batch;
private boolean scanned, isEdited;
public String getTotalDiscount() {
return totalDiscount;
}
public void setTotalDiscount(String totalDiscount) {
this.totalDiscount = totalDiscount;
}
public String getItemBarcode() {
return itemBarcode;
}
public void setItemBarcode(String itemBarcode) {
this.itemBarcode = itemBarcode;
}
public String getDraftName() {
return draftName;
}
public void setDraftName(String draftName) {
this.draftName = draftName;
}
public String getAliascode() {
return aliascode;
}
public void setAliascode(String aliascode) {
this.aliascode = aliascode;
}
public String getString_sale_return() {
return string_sale_return;
}
public void setString_sale_return(String string_sale_return) {
this.string_sale_return = string_sale_return;
}
public boolean isScanned() {
return scanned;
}
public void setScanned(boolean scanned) {
this.scanned = scanned;
}
public String getJob_id() {
return job_id;
}
public void setJob_id(String job_id) {
this.job_id = job_id;
}
public String getBatch() {
return batch;
}
public void setBatch(String batch) {
this.batch = batch;
}
public String getBarcode() {
return barcode;
}
public void setBarcode(String barcode) {
this.barcode = barcode;
}
public String getQuantity() {
return quantity;
}
public void setQuantity(String quantity) {
this.quantity = quantity;
}
public String getArea() {
return area;
}
public void setArea(String area) {
this.area = area;
}
public String getDatetime() {
return datetime;
}
public void setDatetime(String datetime) {
this.datetime = datetime;
}
public String getSuccess() {
return success;
}
public void setSuccess(String success) {
this.success = success;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getReference() {
return reference;
}
public void setReference(String reference) {
this.reference = reference;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public String getPrice() {
return price;
}
public void setPrice(String price) {
this.price = price;
}
public String getColor() {
return color;
}
public void setColor(String color) {
this.color = color;
}
public String getSize() {
return size;
}
public void setSize(String size) {
this.size = size;
}
public String getStock() {
return stock;
}
public void setStock(String stock) {
this.stock = stock;
}
public String getBranch() {
return branch;
}
public void setBranch(String branch) {
this.branch = branch;
}
public String getSupplier() {
return supplier;
}
public void setSupplier(String supplier) {
this.supplier = supplier;
}
public String getLocation() {
return location;
}
public void setLocation(String location) {
this.location = location;
}
public String getBasesell() {
return basesell;
}
public void setBasesell(String basesell) {
this.basesell = basesell;
}
public String getVat() {
return vat;
}
public void setVat(String vat) {
this.vat = vat;
}
public String getAvg_cost() {
return avg_cost;
}
public void setAvg_cost(String avg_cost) {
this.avg_cost = avg_cost;
}
public String getLast_cost() {
return last_cost;
}
public void setLast_cost(String last_cost) {
this.last_cost = last_cost;
}
public String getNext_cost() {
return next_cost;
}
public void setNext_cost(String next_cost) {
this.next_cost = next_cost;
}
public String getGroup_code() {
return group_code;
}
public void setGroup_code(String group_code) {
this.group_code = group_code;
}
public String getType() {
return type;
}
public void setType(String type) {
this.type = type;
}
public String getRemarks1() {
return remarks1;
}
public void setRemarks1(String remarks1) {
this.remarks1 = remarks1;
}
public String getRemarks2() {
return remarks2;
}
public void setRemarks2(String remarks2) {
this.remarks2 = remarks2;
}
public String getListed_days() {
return listed_days;
}
public void setListed_days(String listed_days) {
this.listed_days = listed_days;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getMeta_keywords() {
return meta_keywords;
}
public void setMeta_keywords(String meta_keywords) {
this.meta_keywords = meta_keywords;
}
public String getMeta_description() {
return meta_description;
}
public void setMeta_description(String meta_description) {
this.meta_description = meta_description;
}
public String getTotal() {
return total;
}
public void setTotal(String total) {
this.total = total;
}
public boolean isEdited() {
return isEdited;
}
public void setEdited(boolean isEdited) {
this.isEdited = isEdited;
}
public String getFixedTotal() {
return fixedTotal;
}
public void setFixedTotal(String fixedTotal) {
this.fixedTotal = fixedTotal;
}
public String getFixedPrice() {
return fixedPrice;
}
public void setFixedPrice(String fixedPrice) {
this.fixedPrice = fixedPrice;
}
}
POJO class:
package com.example.model;
import java.util.List;
public class Pojo {
List<Model_BarcodeDetail> data;
public List<Model_BarcodeDetail> getData() {
return data;
}
public void setData(List<Model_BarcodeDetail> data) {
this.data = data;
}
}

You need to store your list in the model class like this
public class POJO {
List<Model_BarcodeDetail> data;
public List<Model_BarcodeDetail> getData() {
return data;
}
public void setData(List<Model_BarcodeDetail> data) {
this.data = data;
}
}
now when you have data in your POJO class
Convert it to json string and store to prefrence like this
String strObject = gson.toJson(list, POJO.class);
outState.putString("MyList", strObject);
Now when you want to get back those data just do like this
String json = orderData.getString("MyList", "");
POJO mPojo = gson.fromJson(json,POJO.class);
now access you List using this object like this
mPojo.getModel_BarcodeList();
Let me know if you still have an issue

You can use TinyDB -- Android-Shared-Preferences-Turbo