java - 将 sqlite 数据从 ListView 传递到其他 Activity

Question

我是 Android 编程新手

我尝试使用 onItemClick 监听器实现将数据从 Listview 传递到另一个 Activity 的 Intent，但我陷入困境。
按照我的代码:

ListviewActivity Activity 显示已保存书籍的列表，其中包含书名、书籍作者... ...

        booklistView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

            Intent intent = new Intent(getApplicationContext(), BookInfoActivity.class);


            editTextBooktitle = (TextView) findViewById(R.id.text_book_title);
            String book_title = editTextBooktitle.getText().toString();
            intent.putExtra(EXTRA_MSG1, book_title);

            editTextBookauthor = (TextView) findViewById(R.id.text_book_author);
            String bookauthor = editTextBookauthor.getText().toString();
            intent.putExtra(EXTRA_MSG2, bookauthor);

            editTextBookdate = (TextView) findViewById(R.id.text_book_date);
            String bookdate = editTextBookdate.getText().toString();
            intent.putExtra(EXTRA_MSG3, bookdate);

            editTextBookrating = (TextView) findViewById(R.id.text_book_rating);
            String bookrating = editTextBookrating.getText().toString();
            intent.putExtra(EXTRA_MSG4, bookrating);

            editTextBookshelf = (TextView) findViewById(R.id.text_book_shelf);
            String bookshelf = editTextBookshelf.getText().toString();
            intent.putExtra(EXTRA_MSG5, bookshelf);

            startActivity(intent);

BookInfoActivity 用于获取信息 - 它就像存储在 SQL 数据库中的书籍的详细 View ，尤其是在 ListView 中显示。

Intent intent = getIntent();

    String book_title = intent.getStringExtra(BookDataListActivity.EXTRA_MSG1);
    passedbooktitle = (EditText) findViewById(R.id.passed_booktitle);
    passedbooktitle.setText(book_title);

    String book_author = intent.getStringExtra(BookDataListActivity.EXTRA_MSG2);
    passedbookauthor = (EditText) findViewById(R.id.passed_bookauthor);
    passedbookauthor.setText(book_author);

    String book_date = intent.getStringExtra(BookDataListActivity.EXTRA_MSG3);
    passedbookdate = (EditText) findViewById(R.id.passed_bookdate);
    passedbookdate.setText(book_date);

    String book_rating = intent.getStringExtra(BookDataListActivity.EXTRA_MSG4);
    passedbookrating = (EditText) findViewById(R.id.passed_bookrating);
    passedbookrating.setText(book_rating);

    String book_shelf = intent.getStringExtra(BookDataListActivity.EXTRA_MSG5);
    passedbookshelf = (EditText) findViewById(R.id.passed_bookshelf);
    passedbookshelf.setText(book_shelf);

当我运行应用程序时，它仅将数据从第一行传递到其他 Activity 。关于如何将每行的数据传递给第二个 Activity 的任何建议

Answer 1

假设您有不同的书籍布局，每个单元格中具有不同的数据，您应该使用 view 来 findViewById:

booklistView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
    @Override 
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

        Intent intent = new Intent(getApplicationContext(), BookInfoActivity.class);


        editTextBooktitle = (TextView) view.findViewById(R.id.text_book_title);
        String book_title = editTextBooktitle.getText().toString();
        intent.putExtra(EXTRA_MSG1, book_title);

        editTextBookauthor = (TextView) view.findViewById(R.id.text_book_author);
        String bookauthor = editTextBookauthor.getText().toString();
        intent.putExtra(EXTRA_MSG2, bookauthor);

        editTextBookdate = (TextView) view.findViewById(R.id.text_book_date);
        String bookdate = editTextBookdate.getText().toString();
        intent.putExtra(EXTRA_MSG3, bookdate);

        editTextBookrating = (TextView) view.findViewById(R.id.text_book_rating);
        String bookrating = editTextBookrating.getText().toString();
        intent.putExtra(EXTRA_MSG4, bookrating);

        editTextBookshelf = (TextView) view.findViewById(R.id.text_book_shelf);
        String bookshelf = editTextBookshelf.getText().toString();
        intent.putExtra(EXTRA_MSG5, bookshelf);

        startActivity(intent);
    }
}