How to pass ArrayList CustomeObject from one activity to another

Question

I want to send Following ArrayList from one activity to another please help   ContactBean m objUserDetails   new ContactBean    ArrayList lt ContactBean gt  ContactLis   new ArrayList lt ContactBean gt        I am sending the above arraylist after adding data in it as follows    Intent i   new Intent this DisplayContact class     i putExtra  Contact list   ContactLis     startActivity i     But I am getting problem while recovering it   ArrayList lt ContactBean gt  l1   new ArrayList lt ContactBean gt     Bundle wrapedReceivedList   getIntent   getExtras    l1  wrapedReceivedList getCharSequenceArrayList  Contact list      At this point I am getting this error   Type mismatch  cannot convert from ArrayList lt CharSequence gt  to ArrayList lt ContactBean gt    My ContactBean class implements Serializable please also tell why we have to implement serializable interface

User · Answer

In First activity   ArrayList lt ContactBean gt  fileList   new ArrayList lt ContactBean gt     Intent intent   new Intent MainActivity this  secondActivity class   intent putExtra  FILES TO SEND   fileList   startActivity intent     In receiver activity   ArrayList lt ContactBean gt  filelist     ArrayList lt ContactBean gt  getIntent   getSerializableExtra  FILES TO SEND

User · Answer

Use this code to pass arraylist lt customobj gt  to anthother Activity  firstly serialize our contact bean  public class ContactBean implements Serializable           do intialization here     Now pass your arraylist   Intent intent   new Intent this name of activity class    contactBean  ConactBean  arraylist get position    intent putExtra  contactBeanObj  conactBean     activity startActivity intent

User · Answer

You can pass an ArrayList lt E gt  the same way  if the E type is Serializable   You would call the putExtra  String name  Serializable value  of Intent to store  and getSerializableExtra  String name  for retrieval   Example   ArrayList lt String gt  myList   new ArrayList lt String gt     intent putExtra  mylist   myList     In the other Activity   ArrayList lt String gt  myList    ArrayList lt String gt   getIntent   getSerializableExtra  mylist

User · Answer

you need implements Parcelable in your ContactBean class  I put one example for you   public class ContactClass implements Parcelable    private String id  private String photo  private String firstname  private String lastname   public ContactClass         private ContactClass Parcel in        firstname   in readString        lastname   in readString        photo   in readString        id   in readString         Override public int describeContents            TODO Auto-generated method stub     return 0      Override public void writeToParcel Parcel dest  int flags         dest writeString firstname       dest writeString lastname       dest writeString photo       dest writeString id        public static final Parcelable Creator lt ContactClass gt  CREATOR   new Parcelable Creator lt ContactClass gt              public ContactClass createFromParcel Parcel in                return new ContactClass in                      public ContactClass   newArray int size                return new ContactClass size                            all get   set method       and this get and set for your code   Intent intent   new Intent this DisplayContact class   intent putExtra  Contact list   ContactLis   startActivity intent     second class   ArrayList lt ContactClass gt  myList   getIntent   getParcelableExtra  Contact list

[android] How to pass ArrayList<CustomeObject> from one activity to another?

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