Android - Context in Parcelable Class

Question

I have the following in a class that is implementing Parcelable:

private static final long serialVersionUID = 66;
private HashMap<Integer, Bitmap> mBitmaps;
private HashMap<Integer, Drawable> mDrawables;
private Context mContext;

And:

@Override
public void writeToParcel(Parcel dest, int flags) {
    // TODO Auto-generated method stub
    dest.writeValue(mBitmaps);
    dest.writeValue(mDrawables);
    dest.writeValue(mContext);
    dest.writeByte((byte) (mActive ? 0x01 : 0x00));

}

I get the error:

java.lang.RuntimeException: Parcel: unable to marshal value android.app.Application@4051cfe0
at android.os.Parcel.writeValue(Parcel.java:1132)
at com.example.example.ImageManager.writeToParcel(ImageManager.java:82)


dest.writeValue(mContext); is on line 82.

Big question is why do you need to write context into parcel??? And small answer is Context is not parcelable so you can not. — Pankaj Kumar, Apr 11 '14 at 06:52
try read this http://stackoverflow.com/questions/3818745/androidruntime-error-parcel-unable-to-marshal-value — xoxol_89, Apr 11 '14 at 06:57
In my code I have: BitmapFactory.decodeResource(mContext.getResources(), resource)); Can I change that so I don't have to use a context to access getResources() ? — user1290717, Apr 11 '14 at 06:58

score 0 · Answer 1 · answered Jun 20 '17 at 07:49

0

As stated in this answer: https://stackoverflow.com/a/6112919/7721253

You are trying to add to the parcel objects which are not serializable. Objects within the objects you are serializing have to be serializable as well.

answered Jun 20 '17 at 07:49

Jalvap

325
2
8

score -1 · Answer 2 · answered Apr 11 '14 at 06:53

-1

You are writing to Parcel.

Did you implemeted Parcelable to do so ?

You need to implement the Serializable or Parcelable interface. Otherwise the value will not be marsheled as the error suggests.

Also,

Classes implementing the Parcelable interface must also have a static field called CREATOR, which is an object implementing the Parcelable.Creator interface.

Check about android Parcelable.

answered Apr 11 '14 at 06:53

My God

22,686
26
99
179

Yes is did implements Parcelable on the class for the object I am trying to pass across. – user1290717 Apr 11 '14 at 06:56

score -1 · Answer 3 · answered Jul 08 '15 at 09:32

Just write a little Class thats holding your Context-Object like this:

import android.content.Context;

public class ContextHolder {
    public static Context context = null;

    public static void setContext(Context context){
        ContextHolder.context = context;
    }

    public static Context getContext(){
        return context;
    }
}

then whenever you need the Context, you can just call the ContextHolder.getContext() function from everywhere you need it.

Cheers

Adding Context in a static variable is a memory leak. – Maxouille Nov 10 '17 at 13:11 — Maxouille, Nov 10 '17 at 13:11

Android - Context in Parcelable Class

3 Answers3