根据你的回答给出布局文件和相关类

好的，下面是一个简单的电话簿应用程序的布局文件和相关类。这里使用了 Android Studio 自带的模板和默认布局，你可以根据自己的需要进行修改和完善。

activity_main.xml：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/main_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:padding="16dp"
    tools:context=".MainActivity">

    <TextView
        android:id="@+id/title_textview"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="@string/title_text"
        android:textAlignment="center"
        android:textSize="24sp"
        android:textStyle="bold" />

    <ListView
        android:id="@+id/contact_listview"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1"
        android:divider="@null"
        android:dividerHeight="0dp" />

    <Button
        android:id="@+id/add_button"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="16dp"
        android:text="@string/add_button_text" />

</LinearLayout>

contact_item.xml：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_margin="8dp"
    android:background="@color/colorPrimaryLight"
    android:orientation="vertical"
    android:padding="8dp">

    <TextView
        android:id="@+id/name_textview"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:textSize="18sp" />

    <TextView
        android:id="@+id/phone_textview"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:textSize="14sp" />

    <TextView
        android:id="@+id/other_info_textview"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:textSize="14sp" />

</LinearLayout>

Contact.java：

public class Contact {
    private String name;
    private String phone;
    private String otherInfo;

    public Contact(String name, String phone, String otherInfo) {
        this.name = name;
        this.phone = phone;
        this.otherInfo = otherInfo;
    }

    public String getName() {
        return name;
    }

    public String getPhone() {
        return phone;
    }

    public String getOtherInfo() {
        return otherInfo;
    }
}

ContactAdapter.java：

public class ContactAdapter extends ArrayAdapter<Contact> {
    private int resourceId;

    public ContactAdapter(Context context, int resourceId, List<Contact> contacts) {
        super(context, resourceId, contacts);
        this.resourceId = resourceId;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        Contact contact = getItem(position);
        View view;
        ViewHolder viewHolder;
        if (convertView == null) {
            view = LayoutInflater.from(getContext()).inflate(resourceId, parent, false);
            viewHolder = new ViewHolder();
            viewHolder.nameTextView = (TextView) view.findViewById(R.id.name_textview);
            viewHolder.phoneTextView = (TextView) view.findViewById(R.id.phone_textview);
            viewHolder.otherInfoTextView = (TextView) view.findViewById(R.id.other_info_textview);
            view.setTag(viewHolder);
        } else {
            view = convertView;
            viewHolder = (ViewHolder) view.getTag();
        }
        viewHolder.nameTextView.setText(contact.getName());
        viewHolder.phoneTextView.setText(contact.getPhone());
        viewHolder.otherInfoTextView.setText(contact.getOtherInfo());
        return view;
    }

    class ViewHolder {
        TextView nameTextView;
        TextView phoneTextView;
        TextView otherInfoTextView;
    }
}

MainActivity.java：

public class MainActivity extends AppCompatActivity {
    private List<Contact> contactList = new ArrayList<>();
    private ContactAdapter contactAdapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        initView();
    }

    private void initView() {
        setTitle(R.string.app_name);

        ListView contactListView = (ListView) findViewById(R.id.contact_listview);

        contactAdapter = new ContactAdapter(this, R.layout.contact_item, contactList);
        contactListView.setAdapter(contactAdapter);

        Button addButton = (Button) findViewById(R.id.add_button);
        addButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent(MainActivity.this, AddContactActivity.class);
                startActivityForResult(intent, 1);
            }
        });

        contactListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                Contact contact = contactList.get(position);
                AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
                builder.setTitle(R.string.delete_contact_title)
                        .setMessage(getString(R.string.delete_contact_message, contact.getName()))
                        .setPositiveButton(R.string.delete_button_text, new DialogInterface.OnClickListener() {
                            @Override
                            public void onClick(DialogInterface dialog, int which) {
                                contactList.remove(position);
                                contactAdapter.notifyDataSetChanged();
                            }
                        })
                        .setNegativeButton(R.string.cancel_button_text, null)
                        .show();
            }
        });
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (resultCode == RESULT_OK && requestCode == 1) {
            String name = data.getStringExtra("name");
            String phone = data.getStringExtra("phone");
            String otherInfo = data.getStringExtra("other_info");
            Contact contact = new Contact(name, phone, otherInfo);
            contactList.add(contact);
            contactAdapter.notifyDataSetChanged();
        }
    }
}

AddContactActivity.java：

public class AddContactActivity extends AppCompatActivity {
    private EditText nameEditText;
    private EditText phoneEditText;
    private EditText otherInfoEditText;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_add_contact);

        initView();
    }

    private void initView() {
        setTitle(R.string.add_contact_title);

        nameEditText = (EditText) findViewById(R.id.name_edittext);
        phoneEditText = (EditText) findViewById(R.id.phone_edittext);
        otherInfoEditText = (EditText) findViewById(R.id.other_info_edittext);

        Button saveButton = (Button) findViewById(R.id.save_button);
        saveButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String name = nameEditText.getText().toString().trim();
                String phone = phoneEditText.getText().toString().trim();
                String otherInfo = otherInfoEditText.getText().toString().trim();
                if (TextUtils.isEmpty(name) || TextUtils.isEmpty(phone)) {
                    Toast.makeText(AddContactActivity.this, R.string.empty_input_tip, Toast.LENGTH_SHORT).show();
                } else {
                    Intent intent = new Intent();
                    intent.putExtra("name", name);
                    intent.putExtra("phone", phone);
                    intent.putExtra("other_info", otherInfo);
                    setResult(RESULT_OK, intent);
                    finish();
                }
            }
        });
    }
}

这些代码可以实现一个基本的电话簿应用程序，你可以根据自己的需求进行修改和扩展。