Why Isn\'t My Serializable List of Thumbnails Passing Through Intents?

Passing Data through Intent using Serializable: Troubleshooting

Your implementation of the Thumbnail class with Serializable does not appear to be the issue. Here are some potential reasons why it might still not be working:

Using putExtra Incorrectly

Instead of using putExtra with a List directly, you should use putExtras with a Bundle that contains your serializable list.

Bundle bundle = new Bundle();
bundle.putSerializable("value", all_thumbs);
intent.putExtras(bundle);

Retrieving Data Incorrectly

In your SomeClass Activity, ensure that you are retrieving the list as a Serializable using getSerializable from the Bundle object.

Intent intent = this.getIntent();
Bundle bundle = intent.getExtras();

List<Thumbnail> thumbs = (List<Thumbnail>)bundle.getSerializable("value");

Other Issues

• Ensure that your serialVersionUID is unique for your Thumbnail class.
• If your Bitmap object is too large, consider using a different data transfer method, such as Parcelable or file-based storage.
• Verify that both classes have access to the same Thumbnail class definition.

If you have followed these steps and the issue persists, please provide more details about your implementation and error messages (if any) for further assistance.

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