How to pass/share object from fragment to fragment?

Question

I want to pass realtime object from fragment to fragment.

I dont want to pass data.

I dont found way to do that.

The only way that I think is by intent but I am not sure.

i read about Singleton pattern,interfaces and Bundle,Global varible.

I would like to see example if it is possible to use share/pass object from one fragment to secend fragment. many Thanks.

Answer 1

Passing real objects between activities or fragments can be achieved through implementing model beans Parcelable or Serializable interface.

Parcelable: A Parcel is similar to a Bundle, but is more sophisticated and can support more complex serialization of classes. Applications can implement the Parcelable interface to define application-specific classes that can be passed around, particularly when using Services.

You can see how to implement Parcelable interface in this article here.

public class Foo implements Parcelable {
   ...
}

Serializable: A serializable interface is java standard serialization. You can read more about it here.

public class Foo implements Serializable {

    private static final long serialVersionUID = 0L;
   ...
}

Suppose you have a class Foo implements Parcelable properly, to put it into Intent in an Activity:

Intent intent = new Intent(getBaseContext(), NextActivity.class);
Foo foo = new Foo();
intent.putExtra("foo", foo);
startActivity(intent);

To get it from intent in another activity:

Foo foo = (Foo) getIntent().getExtras().getParcelable("foo");

** EDIT **

As the original question asked for Fragments, then this is how it works:

 Fragment fragment = new Fragment();
 Foo foo = new Foo();

 Bundle bundle = new Bundle();
 bundle.putParcelable("Foo", foo);
 fragment.setArguments(bundle); 

To get it from bundle in another fragment:

Foo foo = (Foo) bundle.getParcelable("Foo");

Hope this helps!

Answer 2

• Pass object from one Fragment to another Fragment can be acheived by using these simple steps:

• First of all, you have to make your model class as Parcelable:

  class Car implements Parcelable

• Then implements the override functions of Parcelable class: e-g

  @Override
  public int describeContents() {
      return 0;
  }
  
  @Override
  public void writeToParcel(Parcel parcel, int i) {
  
  }
  

• From First Fragment:

  // Set data to pass

  MyFragment fragment = new MyFragment(); //Your Fragment
  Car car = new Car(); // Your Object 
  Bundle bundle = new Bundle();
  bundle.putParcelable("carInfo", car)  // Key, value
  fragment.setArguments(bundle); 
  

  // Pass data to other Fragment

  getFragmentManager()
         .beginTransaction()
         .replace(R.id.container, fragment)
         .commit();`
  

• On Second Fragment

  @Override
  public void onCreate(@Nullable Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
  
     Bundle bundle = this.getArguments();
     if (bundle != null) {
         Car receivedCar = bundle.getParcelable("carInfo"); // Key
     } 
  }
  

  Hope it will help :)