Android Parcelable and Serializable
Solution 1
The link given by Ajay is the exact what you are looking for, how you can do it.
Well, what you can do is implement Parcelable
to your CustomObject1
and create a Parcelable
class for it and then you can use that Parcelable
class to Parcel
it inside another Parcelable
class that will Parcel both the CustomObjects
.
public class CustomObject1 implements Parcelable {
// parcelable code CustomObject1
}
public class CustomObject2 implements Parcelable {
private CustomObject1 obj1;
// add CustomObject1 here with getter setter
// parcelable code for CustomObject2
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeParcelable(obj1, flags);
}
private void readFromParcel(Parcel in) {
obj1 = in.readParcelable(CustomObject1.class.getClassLoader());
}
............
}
Solution 2
You need to make MyCustomObj parcelable.
user1118019
Updated on June 09, 2020Comments
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user1118019 about 4 years
So i know it is recommended to use Parcelable instead of Serializable in android, because it is faster.
My question is: is that impossible to avoid using Serializable right?
If I have a custom object i want to serialize, let's say I have the following class definition
public class Person { String name; int Age; ... .... }
Making this parcelable is easy, because the Person class contains the types parcel.write*() supports, i.e. there is parcel.writeString and parcel.writeInt
Now, what if the Person class is the following:
public class PersonTwo { MyCustomObj customObj; String name; int Age; ... .... }
How am I suppose to parcel the MyCustomObj object?? It seems I need to use serializable again? but again, I thought it is SLOW to use serializable, and seems we have no choice but to use it in this case.
I don't understand
can someone tell me how I would parcel PersonTwo in this case?
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afrish about 9 yearsI suggest you to use Serializable. According to the tests on Nexus 5 it is much faster, than Parcelable. See bitbucket.org/afrishman/androidserializationtest. The main thing to remember is that Serializable is slow only with default settings. If you use manual serialization, it is much, much faster. Check the link above for details.
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user1118019 over 12 yearsThanks dude, i would have accepted both you and ajay as answer, but seems i can only pick one. anyway thank you!!
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Jono about 11 yearsYes this is spot on and how i do it. Just make every single object required, parcelable because at the end of it all, the root object will contain primitive or String types
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Jakub Chromiak over 9 yearsPlease add some code so whe could also check out if the problem lays within android itself.