我无法在ArrayList bookList中获取图书对象，以填充第二项活动中的字段。我能够硬编码填充第二个活动的文本。在将此信息传递给onClickListener时，我无法弄清楚我做错了什么？
public class UsedBooksFragment extends Fragment {
public static final String TAG = "Details_Fragment";
static final int REQUEST_BOOK_DETAILS = 1;
List<Book> bookList = new ArrayList<Book>();
Book book0 = new Book(1, "1984", "George Orwell",
"1984 is a dystopian novel depicting an oligarchical, collectivist society.",
"$6.41", R.drawable.orwell);
Book book1 = new Book(2, "Hyperspace", "Michio Kaku",
"A scientific odyssey through parallel universes, time warps, and the 10th dimension",
"$7.74", R.drawable.hyperspace);
Book book2 = new Book(3, "Johnny Got His Gun", "Dalton Trumbo",
"An Army soldier is hit by an artillery shell in World War I and suffers injuries that have all but erased his humanity.",
"$5.99", R.drawable.johnny);
Book book3 = new Book(4, "Me Talk Pretty One Day", "David Sedaris",
"A collection of hilarious autobiographical stories, including David's move to Paris and his attempt at learning French.",
"$6.79", R.drawable.me_talk);
Book book4 = new Book(5, "Red Notice", "Bill Browder", "A true story of high finance, murder, and one man\'s fight for justice.",
"$8.00", R.drawable.red_notice);
public UsedBooksFragment() {
}
@Override
public void onActivityCreated(Bundle savedInstanceState){
super.onActivityCreated(savedInstanceState);
View.OnClickListener callback = new View.OnClickListener() {
@Override
public void onClick(View v) {
if(v.getId() == R.id.imageButton_book0)
{
showDetails(0);
}
else if(v.getId() == R.id.imageButton_book1)
{
showDetails(1);
}
else if(v.getId() == R.id.imageButton_book2)
{
showDetails(2);
}
else if(v.getId() == R.id.imageButton_book3)
{
showDetails(3);
}
else if(v.getId() == R.id.imageButton_book4)
{
showDetails(4);
}
}
};
ImageButton btn0 = (ImageButton) getActivity().findViewById(R.id.imageButton_book0);
btn0.setOnClickListener(callback);
ImageButton bt1 = (ImageButton) getActivity().findViewById(R.id.imageButton_book1);
bt1.setOnClickListener(callback);
}
private void showDetails(int index) {
Intent intent = new Intent(getActivity(), Details.class);
intent.putExtra(DetailsFragment.TITLE, bookList.get(index).getTitle());
intent.putExtra(DetailsFragment.AUTHOR, bookList.get(index).getAuthor());
intent.putExtra(DetailsFragment.PRICE, bookList.get(index).getPrice());
intent.putExtra(DetailsFragment.DESCRIPTION, bookList.get(index).getDescription());
intent.putExtra(DetailsFragment.IMAGE, bookList.get(index).getImage());
startActivityForResult(intent, REQUEST_BOOK_DETAILS);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
bookList.add(book0);
bookList.add(book1);
bookList.add(book2);
bookList.add(book3);
bookList.add(book4);
return inflater.inflate(R.layout.fragment_used_books, container, false);
}
}