How to use a Bundle with an uncivilized type?

Question

I’m with the next class created by me:

public class Telefone {

private String nome;
private String telefone;

public String getNome() { 
    return nome;
}

public void setNome(String nome) {
    this.nome = nome;
}

public String getTelefone() {
    return telefone;
}

public void setTelefone(String telefone) {
    this.telefone = telefone;
}

}

And I wanted to pass an instance of that class through the Bundle like this:

Telefone telefone = new Telefone();
telefone.setNome("nome");
telefone.setTelefone("12345");
Intent intent = new Intent();
Bundle b = new Bundle();
b.put("telefone", telefone); //como passa esse objeto para o Bundle?
intent.putExtras(b);

I know that the Bundle can pass String, int, float which are primitive types, but how to pass an object of the type Telefone, as in the example described above?

Answer 1

So that a Bundle can pass not primitive types they must implement the interface Serializable or Parcelable.

The implementation of Serializable is simpler but, no android, can create performance problems.

The implementation of Parcelable may at first glance seem complicated, but it’s just laborious⁽¹⁾.

Example of implementation:

public class DeviceEntity implements Parcelable{

    private long id;
    private String name;
    private String codigo;
    private String number;
    private boolean isSelected;

    public DeviceEntity(long id, String name, String codigo, String number, boolean isSelected){

        this.id = id;
        this.name = name;
        this.codigo = codigo;
        this.number = number;
        this.isSelected = isSelected;
    }

    //Parcelable implementation

    @Override
    public int describeContents() {

        return 0;
    }

    @Override
    public void writeToParcel(Parcel dest, int flags) {

        // Necessitamos de escrever cada um dos campos no parcel.
        // Quando formos ler do parcel estes são retornados pela mesma ordem
        dest.writeLong(id);
        dest.writeString(name);
        dest.writeString(codigo);
        dest.writeString(number);
        dest.writeByte((byte)(isSelected ? 1 : 0));

    }

    public static final Parcelable.Creator<DeviceEntity> CREATOR = new
            Parcelable.Creator<DeviceEntity>() {

                @Override
                public DeviceEntity createFromParcel(Parcel source) {

                    return new DeviceEntity(source);
                }

                @Override
                public DeviceEntity[] newArray(int size) {

                    throw new UnsupportedOperationException();
                    //return new DeviceEntity[size];
                }
            }
    ;

    //Construtor usado pelo android para criar a nossa classe, neste caso DeviceEntity
    public DeviceEntity(Parcel source) {

        //Os valores são retornados na ordem em que foram escritos em writeToParcel
        id = source.readLong();
        name = source.readString();
        codigo = source.readString();
        number = source.readString();
        isSelected = source.readByte() != 0;
    }

    //Getters

    public long getId() {
        return id;
    }
    public String getName() {
        return name;
    }
    public String getCodigo() {
        return codigo;
    }
    public String getNumber() {
        return number;
    }
    public boolean isSelected() {
        return isSelected;
    }
}

To use:

intent.putExtra("DeviceEntity", DeviceEntity);

To receive:

Bundle b = getIntent().getExtras();
DeviceEntity deviceEntity = b.getParcelable("DeviceEntity");

_{(1) - If you are using Android Studio there is possibility that it will do the work for you.
After including implements Parcelable, in the class declaration, place the cursor over it and use alt + enter. In the menu that opens choose Add Parcelable Implementation.}

Answer 2

You can go directly to Intent, doing so you need to add an implementation to your class Telefone:

public class Telefone implements Serializable

And then:

intent.putExtra("telefone", telefone);

In the Activity you will receive so:

Intent intent = getIntent();
telefone = (Telefone)intent.getSerializableExtra("telefone");