How to pass a class with BigDecimal and Date attribute via intents (Bundle)?

You have (at least) two possibilities:

• Make MyClass implement Serializable, which is not advisable for this effect (1) .
  Date and BigDecimal implement Serializable, they will be processed without problem. You should use getSerializableExtra() instead of getParcelableExtra() .

• Change the MyClass so that Parcel stores a String and a long with the BigDecimal and Date values. They, after being recovered, are used to recreate them.

  public class ClassParcelable implements Parcelable{
  
      private Date someDate;
      private BigDecimal someBigValue;
  
      public ClassParcelable(Date someDate, BigDecimal someBigValue){
          this.someDate = someDate;
          this.someBigValue = someBigValue;
      }
  
      //Implementação da Parcelable
  
      @Override
      public void writeToParcel(Parcel dest, int flags) {
  
          //Guarda um long que representa a data
          dest.writeLong(someDate.getTime());
  
          //Guarda uma String com a representação do valor do BigDecimal
          dest.writeString(someBigValue.toPlainString());
      }
  
      protected ClassParcelable(Parcel in) {
  
          //Recupera o long que representa a data e recria-a
          someDate = new Date(in.readLong());
          //Recupera a String que representa o valor do BigDecimal e recria-o
          someBigValue = new BigDecimal(in.readString());
      }
  
      @Override
      public int describeContents() {
          return 0;
      }
  
      public static final Creator<ClassParcelable> CREATOR = new Creator<ClassParcelable>() {
          @Override
          public ClassParcelable createFromParcel(Parcel in) {
              return new ClassParcelable(in);
          }
  
          @Override
          public ClassParcelable[] newArray(int size) {
              return new ClassParcelable[size];
          }
      };
  }
  

(1) - Reflection is used during the process and many additional objects are created, which can cause a lot of garbage collection. The result is poor performance and high battery consumption.