I have an activity which uses an Adapter and RecyclerView to display a number of contacts to the user (activity A). The user can tap on a contact to view its info (activity B). They may then choose to edit that info; for this the user is taken to EditContact (activity C).
Is it possible to use startActivityForResult()
in activity B to edit the database information in activity C and update the database and layout of activity B on RESULT_OK
?
EDIT Adding code snippets for clarity:
New/Edit Contact activity:
// Pass the data to the ViewContact activity
Intent addNewContact = new Intent();
addNewContact.putExtra(EXTRA_NAME, name);
addNewContact.putExtra(EXTRA_SURNAME, surname);
addNewContact.putExtra(EXTRA_COMPANY, company);
addNewContact.putExtra(EXTRA_PHONE_NUMBER, phoneNumbers);
addNewContact.putExtra(EXTRA_PHONE_TYPE, phoneTypes);
addNewContact.putExtra(EXTRA_EMAIL, emails);
addNewContact.putExtra(EXTRA_EMAIL_TYPE, emailTypes);
addNewContact.putExtra(EXTRA_ADDRESS, addresses);
addNewContact.putExtra(EXTRA_POSTCODE, postcode);
[...]
if (name.length() > 0 && phoneNumbers.length() > 0) {
if (id != -1) {
addNewContact.putExtra(EXTRA_ID, id);
}
setResult(RESULT_OK, addNewContact);
onBackPressed(); // or finish()
} else {
Toast.makeText(this, "Please enter at least a name and phone no.",
Toast.LENGTH_LONG).show();
}
ViewContact activity:
// On successful result, add the new contact & update the UI
@Override
public void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == EDIT_CONTACT_REQUEST && resultCode == RESULT_OK) {
int id = data.getIntExtra(EXTRA_ID, -1);
// Check ID != -1 just in case, which shouldn't happen
if (id == -1) {
Toast.makeText(this, "Contact not updated", Toast.LENGTH_SHORT).show();
return;
}
String name = data.getStringExtra(EXTRA_NAME);
String surname = data.getStringExtra(EXTRA_SURNAME);
String company = data.getStringExtra(AddNewContact.EXTRA_COMPANY);
String phoneNumber = data.getStringExtra(AddNewContact.EXTRA_PHONE_NUMBER);
String phoneType = data.getStringExtra(AddNewContact.EXTRA_PHONE_TYPE);
String email = data.getStringExtra(AddNewContact.EXTRA_EMAIL);
String emailType = data.getStringExtra(AddNewContact.EXTRA_EMAIL_TYPE);
String address = data.getStringExtra(AddNewContact.EXTRA_ADDRESS);
String postcode = data.getStringExtra(AddNewContact.EXTRA_POSTCODE);
Contact contact =
new Contact(
name,
surname,
company,
phoneNumber,
phoneType,
email,
emailType,
address,
postcode);
contact.setId(id);
// TODO - this does not work, must use LiveData?
// Update the database
ContactRepository contactRepository = new ContactRepository(getApplication());
contactRepository.update(contact);
Toast.makeText(this, "Contact updated", Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(this, "Contact not updated", Toast.LENGTH_SHORT).show();
}
Yes it is possible. In Activity B, you can to start EditContact activity as follows:
Intent intent = new Intent(this, EditContact.class);
intent.putExtra(EditContact.EXTRA_CONTACT_ITEM, contactItem);
startActivityForResult(intent, EDIT_CONTACT_REQUEST_CODE);
When you're done editing the contact in EditContact activity, return RESULT_OK
with edited contactItem and finish the activity:
Intent resultIntent = new Intent();
resultIntent.putExtra(EXTRA_CONTACT_ITEM, contactItem);
setResult(RESULT_OK, resultIntent);
finish();
Then, in Activity B, handle the results as follow:
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == EDIT_CONTACT_REQUEST_CODE) {
if(resultCode == Activity.RESULT_OK) {
ContactItem contactItem= data.getParcelableExtra(EXTRA_CONTACT_ITEM);
//Store item in database
}
}
}
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