Android App Development ฉบับสมบูรณ์

edit book
Button button_edit = (Button) dialog.findViewById(R.id.buttonEdit);
button_edit.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
if (getListAdapter().getCount() > 0) {
editBook(book);
dialog.dismiss();
}
}
});
//delete book
Button button_delete = (Button) dialog.findViewById(R.id.buttonDelete);
button_delete.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
if (getListAdapter().getCount() > 0) {
datasource.deleteBook(book); // delete book
adapter.remove(book);
dialog.dismiss();
Toast.makeText(SQLiteDatabaseActivity.this, "Delete data succeed.",
Toast.LENGTH_LONG).show();
}
}
});
// close dialog
Button button_cancel = (Button) dialog.findViewById(R.id.buttonClose);
button_cancel.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
dialog.dismiss();
}
});
}
dialog.show();
3. โค้ดสำหรับปรับปรุงข้อมูลเมื่อคลิกปุ่ม Update ในกรณีที่ต้องการแก้ไขข้อมูล
public void editBook(final Book book) {
final Dialog dialog = new Dialog(SQLiteDatabaseActivity.this);
dialog.setContentView(R.layout.add_book);
dialog.setTitle("Edit Book");
dialog.setCancelable(true);
final EditText isbn = (EditText) dialog.findViewById(R.id.editTextISBN);
final EditText title = (EditText) dialog
.findViewById(R.id.editTextTitle);
final EditText price = (EditText) dialog
.findViewById(R.id.editTextPrice);
final EditText publisher = (EditText) dialog
.findViewById(R.id.editTextPublisher);
isbn.setText(book.getIsbn());
title.setText(book.getTitle());
price.setText(String.valueOf(book.getPrice()));
publisher.setText(book.getPublisher());
// setup button
Button button_save = (Button) dialog.findViewById(R.id.buttonSave);
บทที ่ 11 การพัฒนาแอพพลิเคชันทำงานกับฐานข้อมูล 237