Example
It is also possible to pass your custom object to other activities using the Bundle class.
There are two ways:
Serializableinterface—for Java and AndroidParcelableinterface—memory efficient, only for Android (recommended)
Parcelable
Parcelable processing is much faster than serializable. One of the reasons for this is that we are being explicit about the serialization process instead of using reflection to infer it. It also stands to reason that the code has been heavily optimized for this purpose.
public class MyObjects implements Parcelable {
private int age;
private String name;
private ArrayList<String> address;
public MyObjects(String name, int age, ArrayList<String> address) {
this.name = name;
this.age = age;
this.address = address;
}
public MyObjects(Parcel source) {
age = source.readInt();
name = source.readString();
address = source.createStringArrayList();
}
@Override
public int describeContents() {
return 0;
}
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeInt(age);
dest.writeString(name);
dest.writeStringList(address);
}
public int getAge() {
return age;
}
public String getName() {
return name;
}
public ArrayList<String> getAddress() {
if (!(address == null))
return address;
else
return new ArrayList<String>();
}
public static final Creator<MyObjects> CREATOR = new Creator<MyObjects>() {
@Override
public MyObjects[] newArray(int size) {
return new MyObjects[size];
}
@Override
public MyObjects createFromParcel(Parcel source) {
return new MyObjects(source);
}
};
}
Sending Activity Code
MyObject mObject = new MyObject("name","age","Address array here");
//Passing MyOject
Intent mIntent = new Intent(FromActivity.this, ToActivity.class);
mIntent.putExtra("UniqueKey", mObject);
startActivity(mIntent);
Receiving the object in destination activity.
//Getting MyObjects
Intent mIntent = getIntent();
MyObjects workorder = (MyObjects) mIntent.getParcelable("UniqueKey");
You can pass Arraylist of Parceble object as below
//Array of MyObjects
ArrayList<MyObject> mUsers;
//Passing MyObject List
Intent mIntent = new Intent(FromActivity.this, ToActivity.class);
mIntent.putParcelableArrayListExtra("UniqueKey", mUsers);
startActivity(mIntent);
//Getting MyObject List
Intent mIntent = getIntent();
ArrayList<MyObjects> mUsers = mIntent.getParcelableArrayList("UniqueKey");
Note: There are Android Studio plugins such as this one available to generate Parcelable code
Serializable
Sending Activity Code
Product product = new Product();
Bundle bundle = new Bundle();
bundle.putSerializable("product", product);
Intent cartIntent = new Intent(mContext, ShowCartActivity.class);
cartIntent.putExtras(bundle);
mContext.startActivity(cartIntent);
Receiving the object in destination activity.
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Bundle bundle = this.getIntent().getExtras();
Product product = null;
if (bundle != null) {
product = (Product) bundle.getSerializable("product");
}
Arraylist of Serializable object: same as single object passing
Custom object should implement the Serializable interface.
