Hello
I'm adapting a aplicativo
that manages contacts with banco de dados
interaction.
No aplicativo
, I'm inserting and deleting contacts but I'm having trouble implementing método
to edit the contacts and save the edited contact in banco de dados
.
The método
onContextItemSelected
is implemented and only this part is missing.
onContextItemSelected method in MainActivity
public boolean onContextItemSelected(MenuItem item) {
switch (item.getItemId()) {
case EDIT:
// TODO: Implement editing a contact
break;
case DELETE:
dbHandler.deleteContact(Contacts.get(longClickedItemIndex));
Contacts.remove(longClickedItemIndex);
contactAdapter.notifyDataSetChanged();
break;
}
return super.onContextItemSelected(item);
}
DatabaseHandler class with updateContact method
public class DatabaseHandler extends SQLiteOpenHelper {
private static final int DATABASE_VERSION = 1;
private static final String DATABASE_NAME = "controleAgenda",
TABLE_CONTACTS = "contatos",
KEY_ID = "id",
KEY_NAME = "nome",
KEY_PHONE = "telefone",
KEY_ADDRESS = "endereco",
KEY_EMAIL = "email",
KEY_IMAGEURI = "imageUri";
public DatabaseHandler(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
@Override
public void onCreate(SQLiteDatabase db) {
db.execSQL("CREATE TABLE " + TABLE_CONTACTS + "(" + KEY_ID + " INTEGER PRIMARY KEY AUTOINCREMENT," + KEY_NAME + " TEXT," + KEY_PHONE + " TEXT," + KEY_ADDRESS + " TEXT," + KEY_EMAIL + " TEXT," + KEY_IMAGEURI + " TEXT)");
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
db.execSQL("DROP TABLE IF EXISTS " + TABLE_CONTACTS);
onCreate(db);
}
public void createContact(Contato contato) {
SQLiteDatabase db = getWritableDatabase();
ContentValues values = new ContentValues();
values.put(KEY_NAME, contato.getName());
values.put(KEY_PHONE, contato.getPhone());
values.put(KEY_ADDRESS, contato.getAddress());
values.put(KEY_EMAIL, contato.getEmail());
values.put(KEY_IMAGEURI, contato.getImageURI().toString());
db.insert(TABLE_CONTACTS, null, values);
db.close();
}
public Contato getContact(int id) {
SQLiteDatabase db = getReadableDatabase();
Cursor cursor = db.query(TABLE_CONTACTS, new String[] { KEY_ID, KEY_NAME, KEY_PHONE, KEY_EMAIL, KEY_ADDRESS, KEY_IMAGEURI }, KEY_ID + "=?", new String[] { String.valueOf(id) }, null, null, null, null );
if (cursor != null)
cursor.moveToFirst();
Contato contato = new Contato(Integer.parseInt(cursor.getString(0)), cursor.getString(1), cursor.getString(2), cursor.getString(3), cursor.getString(4), Uri.parse(cursor.getString(5)));
db.close();
cursor.close();
return contato;
}
public void deleteContact(Contato contato) {
SQLiteDatabase db = getWritableDatabase();
db.delete(TABLE_CONTACTS, KEY_ID + "=?", new String[] { String.valueOf(contato.getId()) });
db.close();
}
public int getContactsCount() {
SQLiteDatabase db = getReadableDatabase();
Cursor cursor = db.rawQuery("SELECT * FROM " + TABLE_CONTACTS, null);
int count = cursor.getCount();
db.close();
cursor.close();
return count;
}
public int updateContact(Contato contato) {
SQLiteDatabase db = getWritableDatabase();
ContentValues values = new ContentValues();
values.put(KEY_NAME, contato.getName());
values.put(KEY_PHONE, contato.getPhone());
values.put(KEY_ADDRESS, contato.getAddress());
values.put(KEY_EMAIL, contato.getEmail());
values.put(KEY_IMAGEURI, contato.getImageURI().toString());
int rowsAffected = db.update(TABLE_CONTACTS, values, KEY_ID + "=?", new String[] { String.valueOf(contato.getId()) });
db.close();
return rowsAffected;
}
public List<Contato> getAllContacts() {
List<Contato> contacts = new ArrayList<Contato>();
SQLiteDatabase db = getWritableDatabase();
Cursor cursor = db.rawQuery("SELECT * FROM " + TABLE_CONTACTS, null);
if (cursor.moveToFirst()) {
do {
contacts.add(new Contato(Integer.parseInt(cursor.getString(0)), cursor.getString(1), cursor.getString(2), cursor.getString(3), cursor.getString(4), Uri.parse(cursor.getString(5))));
}
while (cursor.moveToNext());
}
cursor.close();
db.close();
return contacts;
}
}