Develop Reference

Null bundle when passing from activity to fragment

When trying to pass a custom object from an activity to a fragment by using a bundle, I kept getting a null bundle when I tried to retrieve it in the fragment. I am using parcels since they are the only option for custom arraylists. Any help appreciated!
To show that my class is parcelable:
public class Exercise implements Parcelable{
private String mName;
private String mMuscleGroup;
private String mType;
private String mEquipment;
private float mWeight;
private int mReps;
private int mSet;
public Exercise(String name, String MuscleGroup, String type, String equipment, float weight, int reps, int set) {
mName = name;
mMuscleGroup = MuscleGroup;
mType = type;
mEquipment = equipment;
mWeight = weight;
mReps = reps;
mSet = set;
}
private Exercise(Parcel in) {
mName = in.readString();
mMuscleGroup = in.readString();
mType = in.readString();
mEquipment = in.readString();
mWeight = in.readFloat();
mReps = in.readInt();
mSet = in.readInt();
}
public static final Creator<Exercise> CREATOR = new Creator<Exercise>() {
#Override
public Exercise createFromParcel(Parcel in) {
return new Exercise(in);
}
#Override
public Exercise[] newArray(int size) {
return new Exercise[size];
}
};
public String getName() {
return mName;
}
public String getMuscleGroup() {
return mMuscleGroup;
}
public String getType() {
return mType;
}
public String getEquipment() {
return mEquipment;
}
public float getWeight() { return mWeight; }
public int getReps() { return mReps; }
public int getSet() { return mSet; }
#Override
public int describeContents() {
return 0;
}
#Override
public void writeToParcel(Parcel parcel, int i) {
parcel.writeString(mName);
parcel.writeString(mMuscleGroup);
parcel.writeString(mType);
parcel.writeString(mEquipment);
parcel.writeFloat(mWeight);
parcel.writeInt(mReps);
parcel.writeInt(mSet);
}
}
'''
Activity I am passing bundle from:
#Override
protected void onPause() {
// send ArrayList of exercises to WorkoutsFragment
WorkoutsFragment workoutsFragment = new WorkoutsFragment();
Bundle bundle = new Bundle();
bundle.putSerializable("exercise", exercise);
workoutsFragment.setArguments(bundle);
// clear exercise ArrayList
super.onPause();
}
Fragment receiving bundle:
Bundle bundle = this.getArguments();
if(bundle != null) {
exercise = bundle.getParcelableArrayList("exercise");
}

You need to use bundle.putParcelableArrayList to put Parcelable list objects, not putSerializable
If the types don't match, you get null

RecyclerView adapter gets string from model as a memory object

I have pretty normal recyclerview adapter. I pass the list of array to the adapter and trying set images from link as needed with Glide.
Problem is, when I try to get images link with loggin they seem normal, but when I pass data list to adapter they are not working. And giving memory object instead of String.
I should get this:
http://somelin.com/image.jpg
Instead I get this:
package.name.models.responses.chain.Logo_#c170923
What should I do? My adapter works normally as I am using this adapter in other places in the same way and it works.
My adapter
public class ChainAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
private Context mContext;
private List<Restaurant> modelList;
private OnItemClickListener mItemClickListener;
public ChainAdapter(Context context, ArrayList<Restaurant> modelList) {
this.mContext = context;
this.modelList = modelList;
}
public void updateList(ArrayList<Restaurant> modelList) {
this.modelList = modelList;
notifyDataSetChanged();
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup viewGroup, int viewType) {
View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.item_chain_list, viewGroup, false);
return new ViewHolder(view);
}
#Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, final int position) {
//Here you can fill your row view
if (holder instanceof ViewHolder) {
final Restaurant model = getItem(position);
ViewHolder genericViewHolder = (ViewHolder) holder;
String link = "http://cdn.link.in/unsafe/" + model.getLogo();
System.out.println("chainAdapter " + link);
Glide.with(mContext).load(link).into(genericViewHolder.rest_logo);
CenteredImageSpan imagespan = new CenteredImageSpan(mContext, R.drawable.verified_account);
Spannable text = new SpannableString(model.getName() + " ");
text.setSpan(imagespan, model.getName().length(), model.getName().length() + 1, 0); //text is an object of TextView
if (model.getVerified()) {
genericViewHolder.rest_name.setText(text);
} else {
genericViewHolder.rest_name.setText(model.getName());
}
Calendar today = Calendar.getInstance();
List<Today> hours = model.getToday();
for (Today hour : hours) {
if (hour.getWeekday() == today.get(Calendar.DAY_OF_WEEK) - 1) {
genericViewHolder.restCloseNowIcon.setImageResource(R.drawable.ic_open_now);
genericViewHolder.restCloseNowText.setText(mContext.getString(R.string.open_now));
genericViewHolder.restCloseNowText.setTextColor(mContext.getResources().getColor(R.color.open_now));
} else {
genericViewHolder.restCloseNowIcon.setImageResource(R.drawable.ic_close_now);
genericViewHolder.restCloseNowText.setText(mContext.getString(R.string.close_now));
genericViewHolder.restCloseNowText.setTextColor(mContext.getResources().getColor(R.color.close_now));
}
}
int totalRatings = model.getTotalRatings();
if (totalRatings != 0)
genericViewHolder.restStars.setText((int) totalRatings + "");
}
}
#Override
public int getItemCount() {
return modelList.size();
}
public void SetOnItemClickListener(final OnItemClickListener mItemClickListener) {
this.mItemClickListener = mItemClickListener;
}
private Restaurant getItem(int position) {
return modelList.get(position);
}
public interface OnItemClickListener {
void onItemClick(View view, int position, Restaurant model);
}
public class ViewHolder extends RecyclerView.ViewHolder {
#BindView(R.id.imageView8)
ImageView rest_logo;
#BindView(R.id.textView3)
TextView rest_name;
#BindView(R.id.isVerified)
ImageView isVerified;
#BindView(R.id.rest_close_now_icon)
ImageView restCloseNowIcon;
#BindView(R.id.rest_close_now_text)
TextView restCloseNowText;
#BindView(R.id.rest_stars)
TextView restStars;
public ViewHolder(final View itemView) {
super(itemView);
ButterKnife.bind(this, itemView);
itemView.setOnClickListener(view -> mItemClickListener.onItemClick(itemView, getAdapterPosition(), modelList.get(getAdapterPosition())));
}
}
}
Model
public class Restaurant implements Parcelable
{
#SerializedName("username")
#Expose
private String username;
#SerializedName("total_ratings")
#Expose
private Integer totalRatings;
#SerializedName("verified")
#Expose
private Boolean verified;
#SerializedName("name")
#Expose
private String name;
#SerializedName("logo")
#Expose
private Logo_ logo;
#SerializedName("id")
#Expose
private Integer id;
#SerializedName("today")
#Expose
private List<Today> today = null;
#SerializedName("thumbnail")
#Expose
private Thumbnail thumbnail;
public final static Creator<Restaurant> CREATOR = new Creator<Restaurant>() {
#SuppressWarnings({
"unchecked"
})
public Restaurant createFromParcel(Parcel in) {
return new Restaurant(in);
}
public Restaurant[] newArray(int size) {
return (new Restaurant[size]);
}
}
;
protected Restaurant(Parcel in) {
this.username = ((String) in.readValue((String.class.getClassLoader())));
this.totalRatings = ((Integer) in.readValue((Integer.class.getClassLoader())));
this.verified = ((Boolean) in.readValue((Boolean.class.getClassLoader())));
this.name = ((String) in.readValue((String.class.getClassLoader())));
this.logo = ((Logo_) in.readValue((Logo_.class.getClassLoader())));
this.id = ((Integer) in.readValue((Integer.class.getClassLoader())));
in.readList(this.today, (Today.class.getClassLoader()));
this.thumbnail = ((Thumbnail) in.readValue((Thumbnail.class.getClassLoader())));
}
/**
* No args constructor for use in serialization
*
*/
public Restaurant() {
}
/**
*
* #param id
* #param logo
* #param username
* #param thumbnail
* #param verified
* #param name
* #param today
* #param totalRatings
*/
public Restaurant(String username, Integer totalRatings, Boolean verified, String name, Logo_ logo, Integer id, List<Today> today, Thumbnail thumbnail) {
super();
this.username = username;
this.totalRatings = totalRatings;
this.verified = verified;
this.name = name;
this.logo = logo;
this.id = id;
this.today = today;
this.thumbnail = thumbnail;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public Integer getTotalRatings() {
return totalRatings;
}
public void setTotalRatings(Integer totalRatings) {
this.totalRatings = totalRatings;
}
public Boolean getVerified() {
return verified;
}
public void setVerified(Boolean verified) {
this.verified = verified;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Logo_ getLogo() {
return logo;
}
public void setLogo(Logo_ logo) {
this.logo = logo;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public List<Today> getToday() {
return today;
}
public void setToday(List<Today> today) {
this.today = today;
}
public Thumbnail getThumbnail() {
return thumbnail;
}
public void setThumbnail(Thumbnail thumbnail) {
this.thumbnail = thumbnail;
}
public void writeToParcel(Parcel dest, int flags) {
dest.writeValue(username);
dest.writeValue(totalRatings);
dest.writeValue(verified);
dest.writeValue(name);
dest.writeValue(logo);
dest.writeValue(id);
dest.writeList(today);
dest.writeValue(thumbnail);
}
public int describeContents() {
return 0;
}
}
Model Logo_
public class Logo_ implements Parcelable {
#SerializedName("path")
#Expose
private String path;
#SerializedName("id")
#Expose
private Integer id;
#SerializedName("caption")
#Expose
private String caption;
public final static Creator<Logo_> CREATOR = new Creator<Logo_>() {
#SuppressWarnings({
"unchecked"
})
public Logo_ createFromParcel(Parcel in) {
return new Logo_(in);
}
public Logo_[] newArray(int size) {
return (new Logo_[size]);
}
}
;
protected Logo_(Parcel in) {
this.path = ((String) in.readValue((String.class.getClassLoader())));
this.id = ((Integer) in.readValue((Integer.class.getClassLoader())));
this.caption = ((String) in.readValue((String.class.getClassLoader())));
}
/**
* No args constructor for use in serialization
*
*/
public Logo_() {
}
/**
*
* #param id
* #param path
* #param caption
*/
public Logo_(String path, Integer id, String caption) {
super();
this.path = path;
this.id = id;
this.caption = caption;
}
public String getPath() {
return this.path;
}
public void setPath(String path) {
this.path = path;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getCaption() {
return caption;
}
public void setCaption(String caption) {
this.caption = caption;
}
public void writeToParcel(Parcel dest, int flags) {
dest.writeValue(path);
dest.writeValue(id);
dest.writeValue(caption);
}
public int describeContents() {
return 0;
}
}

As you've discovered the problem is in this line:
String link = "YOUR_URL" + model.getLogo();
Your method getLogo() does not return a string to be appended here, but rather an object of type Logo_. You have 3 options:
Change the method getLogo in your model to return a String (probably the logo filename).
In the Logo object, create another method to return the name and call it like this:
String link = "YOUR_URL" + model.getLogo().getFilename();
3.Override the toString method in your Logo object to return the filename.
#Override
public String toString(){
return this.filename;
}
Edit: You can use the getPath() in your logo POJO:
String link = "YOUR_URL" + model.getLogo().getPath();

Migrate from Greendao3 to Object box

I migrated from GreenDao3 to ObjectBox, and my project is't build.
I get errors like this
../app/build/generated/source/kapt/indexDebug/com/aff/index/main/boxdb/AliasDao.java
Error:(53, 29) error: cannot find symbol method getContentId()
This was my Alias class in GD3:
import org.greenrobot.greendao.annotation.*;
import com.aff.index.main.db.DaoSession;
import org.greenrobot.greendao.DaoException;
// THIS CODE IS GENERATED BY greenDAO, DO NOT EDIT. Enable "keep" sections if you want to edit.
/**
* Entity mapped to table "ALIAS".
*/
#Entity(active = true)
public class Alias {
#Id
private Long id;
private String name;
private String email;
private Long aliasContentId;
/** Used to resolve relations */
#Generated
private transient DaoSession daoSession;
/** Used for active entity operations. */
#Generated
private transient AliasDao myDao;
#ToOne(joinProperty = "aliasContentId")
private Content content;
#Generated
private transient Long content__resolvedKey;
#Generated
public Alias() {
}
public Alias(Long id) {
this.id = id;
}
#Generated
public Alias(Long id, String name, String email, Long aliasContentId) {
this.id = id;
this.name = name;
this.email = email;
this.aliasContentId = aliasContentId;
}
/** called by internal mechanisms, do not call yourself. */
#Generated
public void __setDaoSession(DaoSession daoSession) {
this.daoSession = daoSession;
myDao = daoSession != null ? daoSession.getAliasDao() : null;
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public Long getAliasContentId() {
return aliasContentId;
}
public void setAliasContentId(Long aliasContentId) {
this.aliasContentId = aliasContentId;
}
/** To-one relationship, resolved on first access. */
#Generated
public Content getContent() {
Long __key = this.aliasContentId;
if (content__resolvedKey == null || !content__resolvedKey.equals(__key)) {
__throwIfDetached();
ContentDao targetDao = daoSession.getContentDao();
Content contentNew = targetDao.load(__key);
synchronized (this) {
content = contentNew;
content__resolvedKey = __key;
}
}
return content;
}
#Generated
public void setContent(Content content) {
synchronized (this) {
this.content = content;
aliasContentId = content == null ? null : content.getId();
content__resolvedKey = aliasContentId;
}
}
/**
* Convenient call for {#link org.greenrobot.greendao.AbstractDao#delete(Object)}.
* Entity must attached to an entity context.
*/
#Generated
public void delete() {
__throwIfDetached();
myDao.delete(this);
}
/**
* Convenient call for {#link org.greenrobot.greendao.AbstractDao#update(Object)}.
* Entity must attached to an entity context.
*/
#Generated
public void update() {
__throwIfDetached();
myDao.update(this);
}
/**
* Convenient call for {#link org.greenrobot.greendao.AbstractDao#refresh(Object)}.
* Entity must attached to an entity context.
*/
#Generated
public void refresh() {
__throwIfDetached();
myDao.refresh(this);
}
#Generated
private void __throwIfDetached() {
if (myDao == null) {
throw new DaoException("Entity is detached from DAO context");
}
}
}
This is the ObjectBox Alias class:
// THIS CODE IS GENERATED BY greenDAO, DO NOT EDIT. Enable "keep" sections if you want to edit.
/**
* Entity mapped to table "ALIAS".
*/
#Entity()
public class Alias {
#Id
private long id;
private String name;
private String email;
private long aliasContentId;
private ToOne<Content> content;
public Alias() {
}
public Alias(long id) {
this.id = id;
}
public Alias(long id, String name, String email, long aliasContentId, ToOne<Content> content) {
this.id = id;
this.name = name;
this.email = email;
this.aliasContentId = aliasContentId;
this.content = content;
}
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public long getAliasContentId() {
return aliasContentId;
}
public void setAliasContentId(long aliasContentId) {
this.aliasContentId = aliasContentId;
}
public ToOne<Content> getContent() {
return content;
}
public void setContent(ToOne<Content> content) {
this.content = content;
}
}
And this is the DAO was generated by ObjectBox
// THIS CODE IS GENERATED BY objectbox, DO NOT EDIT.
/**
* DAO for table "Alias".
*/
public class AliasDao extends AbstractDao<Alias, Long> {
public static final String TABLENAME = "Alias";
/**
* Properties of the Alias box.
*/
private static io.objectbox.EntityInfo BOX_PROPERTIES = new Alias_();
/**
* Properties of entity Alias.<br/>
* Can be used for QueryBuilder and for referencing column names.
*/
public static class Properties {
public final static Property Id = Alias_.id;
public final static Property Name = Alias_.name;
public final static Property Email = Alias_.email;
public final static Property AliasContentId = Alias_.aliasContentId;
public final static Property ContentId = Alias_.contentId;
}
private Query<Alias> content_AliasesQuery;
public AliasDao(Box<Alias> box, IdentityScopeLong<Alias> identityScope) {
super(box, BOX_PROPERTIES, identityScope);
}
public AliasDao(DaoSession daoSession, Box<Alias> box, IdentityScopeLong<Alias> identityScope) {
super(daoSession, box, BOX_PROPERTIES, identityScope);
}
#Override
public void readEntity(Alias from, Alias to) {
to.setId(from.getId());
to.setName(from.getName());
to.setEmail(from.getEmail());
to.setAliasContentId(from.getAliasContentId());
to.setContentId(from.getContentId());
}
#Override
public Long getKey(Alias entity) {
if(entity != null) {
return entity.getId();
} else {
return null;
}
}
#Override
protected final boolean isEntityUpdateable() {
return true;
}
}
This was the Alias Entity at GD3 Daogenerator
Entity alias = schema.addEntity(ENTITY_ALIAS);
alias.addIdProperty();
alias.addStringProperty(PROPERTY_NAME);
alias.addStringProperty(PROPERTY_EMAIL);
Property aliasContentId = alias.addLongProperty("aliasContentId").getProperty();
alias.addToOne(content, aliasContentId);
ToMany contentToAlias = content.addToMany(alias, aliasContentId);
contentToAlias.setName(ALIASES);
I can't find out why Object Box generates getContentId() into the DAO, or how can I resolve it.

contentId is the default name of the property storing the ID of the to-one relation content. Thus, if you want to use aliasContentId instead, you need to specify the name using #TargetIdProperty:
#TargetIdProperty("aliasContentId")
private ToOne<Content> content;

How to send class object through intent by implement parcable. Unable to marshal value error

I've one class, in which array list is there. How to send it through intent. following i did for my class
public class MakeOrder implements Parcelable {
#SerializedName("refno")
#Expose
private String refno;
#SerializedName("ddesc")
#Expose
private String ddesc;
#SerializedName("free")
#Expose
private String free;
#SerializedName("fgift")
#Expose
private String fgift;
#SerializedName("sgift")
#Expose
private String sgift;
#SerializedName("sandage")
#Expose
private SandageResponse sandage;
#SerializedName("inst")
#Expose
private String inst;
#SerializedName("items")
#Expose
private List<Item> items = new ArrayList<Item>();
#SerializedName("discount")
#Expose
private String discount;
#SerializedName("coupon")
#Expose
private Coupon coupon;
#SerializedName("delivery")
#Expose
private String delivery;
#SerializedName("user")
#Expose
private User user;
#SerializedName("otype")
#Expose
private String otype;
#SerializedName("ptype")
#Expose
private String ptype;
#SerializedName("app_id")
#Expose
private String appId;
#SerializedName("app_key")
#Expose
private String appKey;
#SerializedName("request")
#Expose
private String request;
#SerializedName("tablename")
#Expose
private String tablename;
#SerializedName("staff")
#Expose
private String staff;
public String getTablename() {
return tablename;
}
public void setTablename(String tablename) {
this.tablename = tablename;
}
public String getStaff() {
return staff;
}
public void setStaff(String staff) {
this.staff = staff;
}
public String getRefno() {
return refno;
}
public void setRefno(String refno) {
this.refno = refno;
}
public String getDdesc() {
return ddesc;
}
public void setDdesc(String ddesc) {
this.ddesc = ddesc;
}
public String getFree() {
return free;
}
public void setFree(String free) {
this.free = free;
}
public String getFgift() {
return fgift;
}
public void setFgift(String fgift) {
this.fgift = fgift;
}
public String getSgift() {
return sgift;
}
public void setSgift(String sgift) {
this.sgift = sgift;
}
public SandageResponse getSandage() {
return sandage;
}
public void setSandage(SandageResponse sandage) {
this.sandage = sandage;
}
public String getInst() {
return inst;
}
public void setInst(String inst) {
this.inst = inst;
}
public List<Item> getItems() {
return items;
}
public void setItems(List<Item> items) {
this.items = items;
}
public String getDiscount() {
return discount;
}
public void setDiscount(String discount) {
this.discount = discount;
}
public Coupon getCoupon() {
return coupon;
}
public void setCoupon(Coupon coupon) {
this.coupon = coupon;
}
public String getDelivery() {
return delivery;
}
public void setDelivery(String delivery) {
this.delivery = delivery;
}
public User getUser() {
return user;
}
public void setUser(User user) {
this.user = user;
}
public String getOtype() {
return otype;
}
public void setOtype(String otype) {
this.otype = otype;
}
public String getPtype() {
return ptype;
}
public void setPtype(String ptype) {
this.ptype = ptype;
}
public String getAppId() {
return appId;
}
public void setAppId(String appId) {
this.appId = appId;
}
public String getAppKey() {
return appKey;
}
public void setAppKey(String appKey) {
this.appKey = appKey;
}
public String getRequest() {
return request;
}
public void setRequest(String request) {
this.request = request;
}
#Override
public int describeContents() {
return 0;
}
#Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeString(this.refno);
dest.writeString(this.ddesc);
dest.writeString(this.free);
dest.writeString(this.fgift);
dest.writeString(this.sgift);
dest.writeParcelable(this.sandage, flags);
dest.writeString(this.inst);
dest.writeTypedList(this.items);
dest.writeString(this.discount);
dest.writeParcelable(this.coupon, flags);
dest.writeString(this.delivery);
dest.writeParcelable(this.user, flags);
dest.writeString(this.otype);
dest.writeString(this.ptype);
dest.writeString(this.appId);
dest.writeString(this.appKey);
dest.writeString(this.request);
dest.writeString(this.tablename);
dest.writeString(this.staff);
}
public MakeOrder() {
}
protected MakeOrder(Parcel in) {
this.refno = in.readString();
this.ddesc = in.readString();
this.free = in.readString();
this.fgift = in.readString();
this.sgift = in.readString();
this.sandage = in.readParcelable(SandageResponse.class.getClassLoader());
this.inst = in.readString();
this.items = in.createTypedArrayList(Item.CREATOR);
this.discount = in.readString();
this.coupon = in.readParcelable(Coupon.class.getClassLoader());
this.delivery = in.readString();
this.user = in.readParcelable(User.class.getClassLoader());
this.otype = in.readString();
this.ptype = in.readString();
this.appId = in.readString();
this.appKey = in.readString();
this.request = in.readString();
this.tablename = in.readString();
this.staff = in.readString();
}
public static final Parcelable.Creator<MakeOrder> CREATOR = new Parcelable.Creator<MakeOrder>() {
#Override
public MakeOrder createFromParcel(Parcel source) {
return new MakeOrder(source);
}
#Override
public MakeOrder[] newArray(int size) {
return new MakeOrder[size];
}
};
}
Please take a look of updated one
I'm getting error like unable to marshal value
I made all class Parcelable. how to send its object through Intent
Thanks in Advance
Logcat is like
java.lang.RuntimeException: Parcel: unable to marshal value Models.PlaceOrder.Sub#41e10f80
at android.os.Parcel.writeValue(Parcel.java:1235)
at android.os.Parcel.writeList(Parcel.java:622)
at Models.PlaceOrder.Item.writeToParcel(Item.java:90)
at android.os.Parcel.writeTypedList(Parcel.java:1017)
at Models.PlaceOrder.MakeOrder.writeToParcel(MakeOrder.java:246)
at android.os.Parcel.writeParcelable(Parcel.java:1254)
at android.os.Parcel.writeValue(Parcel.java:1173)
at android.os.Parcel.writeMapInternal(Parcel.java:591)
at android.os.Bundle.writeToParcel(Bundle.java:1627)
at android.os.Parcel.writeBundle(Parcel.java:605)
at android.content.Intent.writeToParcel(Intent.java:6866)
at android.app.ActivityManagerProxy.startActivity(ActivityManagerNative.java:1897)
at android.app.Instrumentation.execStartActivity(Instrumentation.java:1418)
at android.app.Activity.internalStartActivityForResult(Activity.java:3427)
at android.app.Activity.access$200(Activity.java:660)
at android.app.Activity$2.onStartActivity(Activity.java:3417)
at android.app.Activity.startActivityForBusiness(Activity.java:5441)
at android.app.Activity.startActivityForResult(Activity.java:3413)
at android.support.v4.app.BaseFragmentActivityJB.startActivityForResult(BaseFragmentActivityJB.java:48)
at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:75)
at android.app.Activity.startActivityForResult(Activity.java:3367)
at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:871)
at android.app.Activity.startActivity(Activity.java:3644)
at android.app.Activity.startActivity(Activity.java:3612)
Items.java where getting Exception
public class Item implements Parcelable {
#SerializedName("itemid")
#Expose
private String itemid;
#SerializedName("qty")
#Expose
private String qty;
#SerializedName("sub")
#Expose
private List<Sub> sub = new ArrayList<Sub>();
/**
*
* #return
* The itemid
*/
public String getItemid() {
return itemid;
}
/**
*
* #param itemid
* The itemid
*/
public void setItemid(String itemid) {
this.itemid = itemid;
}
/**
*
* #return
* The qty
*/
public String getQty() {
return qty;
}
/**
*
* #param qty
* The qty
*/
public void setQty(String qty) {
this.qty = qty;
}
/**
*
* #return
* The sub
*/
public List<Sub> getSub() {
return sub;
}
/**
*
* #param sub
* The sub
*/
public void setSub(List<Sub> sub) {
this.sub = sub;
}
#Override
public int describeContents() {
return 0;
}
#Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeString(this.itemid);
dest.writeString(this.qty);
dest.writeList(this.sub);
}
public Item() {
}
protected Item(Parcel in) {
this.itemid = in.readString();
this.qty = in.readString();
this.sub = new ArrayList<Sub>();
in.readList(this.sub, Sub.class.getClassLoader());
}
public static final Parcelable.Creator<Item> CREATOR = new Parcelable.Creator<Item>() {
#Override
public Item createFromParcel(Parcel source) {
return new Item(source);
}
#Override
public Item[] newArray(int size) {
return new Item[size];
}
};
}

You need to implement Parcelable also in the Item and Coupon objects.
Then when you add and read the list in you MakeOrder class:
#Override
public void writeToParcel(Parcel dest, int flags) {
...
// to write the Item list
dest.writeList(items);
// to write Coupon object
dest.writeParcelable(coupon, falgs);
}
BTW, your constructor is empty
private MakeOrder(Parcel in) {
...
// to read the Item list
items = new ArrayList<Item>();
in.readList(items, Item.CREATOR);
// to read Coupon object
in.readParcelable(Coupon.CREATOR);
}
This link could help you:
How to make a class with nested objects Parcelable
And this is the Parcelable documentation:
https://developer.android.com/reference/android/os/Parcel.html
EDIT:
The where more Percel problem added to the question.
Final solution in chat: https://chat.stackoverflow.com/rooms/123710/discussion-between-aman-singh-and-adalpari

You need to put in extras like this:
Intent intent-new Intent(this,YouActvity.class);
intent.putExtra("key",yourModel);
startActivity(intent);
In Activity to retrive:
YouModel yourModel = (YourModel) getIntent().getSerializableExtra("key");

Firstly, your Parcelable constructor is empty. If you leave it empty, then it won't work. You need to read fields from parcel the same order you wrote them in writeToParcel() method.
Then to write parcelable data to intent, putExtra() method of the intent. To extract data from intent, use getParcelableExtra() method of the intent

Try using this
intent.putParcelableArrayListExtra("value", orderList);
And in other Activity get it as:
List<String> orderList=this.getIntent().
getParcelableArrayListExtra("value");
Hope this helps

Android use Intent to send a list of Parcelable objects which contain a list of another Parcelable objects

In my Android app, I want to use Intent to pass a list of SingleGroup to another Activity where each SingleGroup object contains a list of SingleImage, here are class for SingleImage and SingleGroup:
public class SingleImage implements Parcelable{
public String name;
public int drawableId;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getDrawableId() {
return drawableId;
}
public void setDrawableId(int drawableId) {
this.drawableId = drawableId;
}
public SingleImage(String name, int drawableId)
{
this.name = name;
this.drawableId = drawableId;
}
public static final Parcelable.Creator<SingleImage> CREATOR
= new Parcelable.Creator<SingleImage>()
{
public SingleImage createFromParcel(Parcel in)
{
return new SingleImage(in);
}
public SingleImage[] newArray(int size)
{
return new SingleImage[size];
}
};
private SingleImage(Parcel in)
{
name = in.readString();
drawableId = in.readInt();
}
#Override
public int describeContents() {
return 0;
}
#Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeString(name);
dest.writeInt(drawableId);
}
}
Here is SingleGroup class:
public class SingleGroup implements Parcelable{
private static final String TAG = "SINGLEGROUP";
private ArrayList<SingleImage> images = new ArrayList<SingleImage>(0);
private String myTitle;
private String groupDesc;
public SingleGroup(String mTitle, String desc, ArrayList<SingleImage> imagesList) {
this.myTitle = mTitle;
this.groupDesc = desc;
this.images = imagesList;
}
public String getGroupDesc() {
return groupDesc;
}
public String getMyTitle() {
return myTitle;
}
public void setMyTitle(String myTitle) {
this.myTitle = myTitle;
}
public ArrayList<SingleImage> getImages() {
return images;
}
public void setImages(ArrayList<SingleImage> images) {
this.images = images;
}
public static final Parcelable.Creator<SingleGroup> CREATOR
= new Parcelable.Creator<SingleGroup>()
{
public SingleGroup createFromParcel(Parcel in)
{
return new SingleGroup(in);
}
public SingleGroup[] newArray(int size)
{
return new SingleGroup[size];
}
};
private SingleGroup(Parcel in)
{
myTitle = in.readString();
groupDesc = in.readString();
//problem maybe here
in.readTypedList(images,SingleImage.CREATOR);
}
#Override
public int describeContents() {
return 0;
}
#Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeString(myTitle);
dest.writeString(groupDesc);
//problem maybe here
dest.writeTypedList(images);
}
#Override
public String toString() {
String result = "myTitle "+myTitle+" desc "+ groupDesc + " imagesize "+images.size();
return result;
}
}
It works ok when calling to pass ArrayList<SingleImage> through Intent,
while when I called to pass ArrayLlist<SingleGroup> through Intent I got error:
Parcel android.os.Parcel#3c4c6743: Unmarshalling unknown type code
3211379 at offset 224
Any idea? Thanks in advance
---------------- Update ----------------
I have changed in.readTypedList(images, null); to in.readTypedList(images, SingleImage.CREATOR); but it still not working. same unmarshalling error
---------------- Problem Solved --------------
Thanks to Keita. The real problem is not actually listed in my code. When I passing the parcelable object, I should also include some other attributes which I missed.
Strongly recommend AS plugin Android Parcelable code generator

You must be pass SingleImage.CREATOR into method readTypedList instead of "null" value
private SingleGroup(Parcel in)
{
myTitle = in.readString();
groupDesc = in.readString();
//problem maybe here
in.readTypedList(images, SingleImage.CREATOR);
}

Try this one. That is what i always do and it work:
private SingleGroup(Parcel in)
{
myTitle = in.readString();
groupDesc = in.readString();
//problem maybe here
in.createTypedArrayList(SingleImage.CREATOR);
}

ArrayList is serialize. So try to this
public class SingleImage implements Serializable{
....
}
Refer this: ArrayList Android Documentation