将sqlite数据从列表视图传递到其他活动

Question

我是android编程的新手

我试图使用onItemClick侦听器实现将数据从Listview传递到另一个Activity的Intent，但是我遇到了麻烦。
按照我的代码：

ListviewActivity活动显示已保存的书的列表，其中包含书名，书作者...

        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-就像存储在sql数据库中的书的详细视图一样，特别是在列表视图中显示。

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活动。 关于如何将每一行的数据传递给第二个活动的任何建议

Answer 1

假设您在每个单元格中具有不同的书籍布局和不同的数据，则应使用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);
    }
}

Answer 2

采用

view.findViewById

代替

findViewById

每个列表项都有findViewById（R.id.text_book_title）。 因此，它找到了您的第一个。 通过使用视图，可以选择所单击项目的text_book_title 。