Bookinfo.title、Bookinfo.author、Book.isbn変数のフラグメント内でこのエラーが発生します。理由はわかりません。すべてのドキュメントは、それを修正しようとすると別のエラーを表示します。Bookinfに関しては、ゲッターとセッターで構成される別のクラスがあります。BookDetailsFragmentクラスのFragmentという単語でエラーが発生します。エラーは、BookDetailsFragmentに@SuppressLint'NewApi'を追加することを示しています。どんな助けでも大歓迎です。
BookDetailsFragmentのコードは次のとおりです。
import android.app.Fragment;
public class BookDetailsFragment extends Fragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, 
        Bundle savedInstanceState) {
    //View view = inflater.inflate(R.layout.book_details, container, false);
    View view = inflater.inflate(R.layout.book_details, null);
    System.out.println("BookDetailsActivity executed");
    //Defines the TextViews in R.layout.book_details
    TextView bkTitle = (TextView)view.findViewById(R.id.bookTitle);
    TextView bkAuth = (TextView)view.findViewById(R.id.bookAuthor);
    TextView bkIsbn = (TextView)view.findViewById(R.id.bookISBN);
    //Retrieve the bundle object passed from BuyFragTab
    Bundle b = getArguments();
    //Getting the item's clicked position and setting corresponding details
    bkTitle.setText("Title:    " + Bookinfo.title[b.getInt("position")]);
    bkAuth.setText("Author:    " + Bookinfo.author[b.getInt("position")]);
    bkIsbn.setText("ISBN:      " + Bookinfo.isbn[b.getInt("position")]);
    return view;
    }
}
Bookinfoクラスコードは次のとおりです。
package com.skipster.BookBarter;
public class Bookinfo {
private String title;
private String author;
private String isbn;
public Bookinfo(String title, String author, String isbn) {
    this.title = title;
    this.author = author;
    this.isbn = isbn;
            // TODO Auto-generated constructor stub
    }
    public String getTitle() {
        return title;
    }
    public void setTitle(String title) {
        this.title = title;
    }
    public String getAuthor() {
        return author;
    }
    public void setAuthor(String author) {
        this.author = author;
    }
    public String getIsbn() {
        return isbn;
    }
    public void setIsbn(String isbn) {
        this.isbn = isbn;
    }
    //returns all the previous variables to the program that made the call
    @Override
    public String toString() {
        return title + " " + author + " " + isbn;
    }
}
BookDetailsActivityのコードは次のとおりです。
import android.os.Bundle;
import android.app.Activity;
import android.app.FragmentManager;
import android.app.FragmentTransaction;
public class BookDetailsActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    //setting the layout for this activity
    setContentView(R.layout.book_details_activity_layout);
    //get fragment manager for fragment related operations
    FragmentManager fm = getFragmentManager();
    //get fragment transaction object, which can add, move or replace a fragmnt
    FragmentTransaction ft = fm.beginTransaction();
    //instantiating the fragment BookDetailsFragment
    BookDetailsFragment detailsFragment = new BookDetailsFragment();
    //creating a bundle object to pass the data (clicked item's position)
    //from this activity to fragment
    Bundle b = new Bundle();
    //setting the data to the bundle object from the Intent
    b.putInt("position", getIntent().getIntExtra("position", 0));
    System.out.println("the bundle passed" + b);
    //setting the bundle object to the fragment
    detailsFragment.setArguments(b);
    //adding the fragment to the fragment transaction
    ft.add(R.id.book_details_fragment_container, detailsFragment);
    //add the fragment transaction to backstack
    ft.addToBackStack(null);
    //Executing the transaction
    ft.commit();
}
}
インテントを開始するonClickListenerのコードは次のとおりです。
bookLV.setOnItemClickListener(new OnItemClickListener() {
        public void onItemClick(AdapterView<?> parent, View view, int position,
                long id){
        String selectTitle, selectAuthor, selectIsbn = null;
        //When item is clicked, show it's detailed view
        Bookinfo bkRecs = (Bookinfo)parent.getItemAtPosition(position);
        //Creating an intent object to start BookDetailsActivity
        Intent bkIntent = new Intent("com.skipster.BookBarter.BOOKDETAILSACTIVITY");
        //Setting data (the clicked item's position to the intent
        bkIntent.putExtra("position", position);
        System.out.println("Data loaded for intent");
        //Start the activity
        startActivity(bkIntent);
        System.out.println("Intent activity started");
        }
    });