I don't get why this ClassCastException occurs

Question

// Application ...
Intent i = new Intent();
i.putExtra(EXTRA_FILE_UPLOAD_URIS, mGalleryAdapter.getItems()); 

Uri[] getItems() { return mItems; }

// Service ...
int         


        

Answer 1

I think what's happening is something as follows:

class Parent { }

class MaleParent extends Parent { }

class FemaleParent extends Parent { }

If the scenario is something as above then the following will fail at runtime:

Parent[] parents = new FemaleParent[]{};
MaleParent[] maleParents = (MaleParent[]) parents;

Something as follows does not raise the exception:

Parent[] parents = new MaleParent[]{};
MaleParent[] maleParents = (MaleParent[]) parents;