Develop Reference

Sqlite updating a record

This is my first time meddling with sqlite on android.
Followed a tutorial and created a SQliteHelper Class, there is this method inside:
// Updating single profile
public int updateProfile(Profile profile) {
// 1. get reference to writable DB
SQLiteDatabase db = this.getWritableDatabase();
// 2. create ContentValues to add key "column"/value
ContentValues values = new ContentValues();
values.put("cpf", profile.getCpf()); // get cpf
values.put("nome", profile.getNome()); // get nome
values.put("phone", profile.getPhone()); // get nome
// 3. updating row
int i = db.update(TABLE_PROFILES, //table
values, // column/value
KEY_ID+" = ?", // selections
new String[] { String.valueOf(profile.getId()) }); //selection args
// 4. close
db.close();
return i;
}
However, I have no idea how to use it..
I know that in order to get the profile I do the following:
MySQLiteHelper db = new MySQLiteHelper(view.getContext());
db.updateProfile(db.getProfile(0));
But how do I actually update it?

That code updates the profile with an specific id in this part:
// 3. updating row
int i = db.update(TABLE_PROFILES, //table
values, // column/value
KEY_ID+" = ?", // selections
new String[] { String.valueOf(profile.getId()) }); //selection args
So, this id comes from the Profile object you have just pased to the function.
You should do something like:
// get a profile
MySQLiteHelper db = new MySQLiteHelper(view.getContext());
Profile p = db.getProfile(0);
// change something
p.setPhone(55598789);
// update profile p
updateProfile(p);

Updating rows in Android SQlite

I'm using SQlite in my Android app and the task is - how can I update all the rows in one table?
I have a 1st column with name "cl_id" (integer numbers 1-2-3-4..) and after deleting some rows, I wan't to make a cycle to fill this 1st column with a new values to keep them in right order.
I was trying to execute:
data.put("cl_id",index);
db.update("mdb_table_contactList", data, null, null);
but it's updates all the values in the first column :(

To update the field in specific row, try this;
ContentValues data = new ContentValues();
data.put("cl_id",index);
db.update("mdb_table_contactList", data, "id="+_id, null);
db.close();
It's good practice to have a primary key for each row data.
Here _id would be your primary key.

"just give rowId and type of data that is going to be update in ContentValues."
public void updateStatus(String id , int status){
SQLiteDatabase db = this.getWritableDatabase();
ContentValues data = new ContentValues();
data.put("status", status);
db.update(TableName, data, "columnName" + " = "+id , null);
}

Try this it must work
void updateDatail(String id) {
ContentValues data = new ContentValues();
data.put("cl_id",index);
db.update("mdb_table_contactList", data, "id=?", new String[]{id});
db.close();
}

update SQLite database android

Hello i have MySQLite database in my android project and Im trying to update one of the coloume and it doesn't work
my code:
db source:
public void updateToken(int id, int tokens)
{
List<User> users = getAllUsers();
dbHelper.updateToken(database, id, users.get(id).getUsername(),users.get(id).getPassword(), 10);
}
SQLite helper:
epublic void updateToken(SQLiteDatabase db,int id, String username,String password,int newToken) {
ContentValues cv = new ContentValues();
cv.put(COLUMN_USERNAME, username);
cv.put(COLUMN_PASSWORD, password);
cv.put(COLUMN_TOKENS, newToken);
db.update(TABLE_USERS,cv,"_id "+"="+id,null);
}
calling the method :
dataSource.updateToken(userID,10);

As see here SQLiteDatabase.update takes whereArgs as last parameter.
So,instead of passing last param null in update method pass id value according to which want to update row value like:
String[] whereArgs = new String[] {String.valueOf(id)};
db.update(TABLE_USERS,cv,"_id=?",whereArgs);

accessing variable in activity from database

i have an interplay between the MainActivity and the DatabaseAdapter class where I'm trying to access an integer variable from the MainActivity. The code as follows;
in MainActivity...
int clam = 7;
public void onClick_UpdateJ(View v) {
myDb.updateJ();
}
in DbAdapter
public class {
.....
public void updateJ(){
int grape = "coli = ?;
ContentValues arges = new ContentValues();
arges.put(coli, 7);
// Insert it into the database.
db.update(DATABASE_TABLE, arges, grape, new int[]{1});
}
}
As you can see, I'm trying to update the coli data (integer) in the database from the current 1 to 7. How do I do this? I tried shifting everything in DbAdapter to MainActivity but the 'update' method is not recognized.
Thanks in advance.

public void updateJ(int value) {
ContentValues cv = new ContentValues();
cv.put("coli", value);
String where = "coli = ?";
whereArgs = new String[] { Integer.toString(1) };
db.update(DATABASE_TABLE, cv, where, whereArgs);
}
The update method takes 4 arguments:
table (String): the table name
values (ContentValues): the values to insert
selection (String): a SQLite WHERE clause. You already know that the ? character will be replaced by values in selectionArgs.
selectionArgs (String[]): values that replace ?s in the where clause

Trying to update values of an SQLite database from an Android app

Using the following code I can't upgrade the data in the database:
public void modification(int pos) {
AdminSQLiteOpenHelper admin = new AdminSQLiteOpenHelper(this,
"administracion", null, 1);
SQLiteDatabase db = admin.getWritableDatabase();
ContentValues record = new ContentValues();
record.put(AdminSQLiteOpenHelper.ALARM_HOUR, alarmList.get(pos).getHour());
record.put(AdminSQLiteOpenHelper.ALARM_DATE, alarmList.get(pos).getDate());
record.put(AdminSQLiteOpenHelper.ALARM_ACTIVE, 1);
int numOfRows = db.update("alarm", record, "id=" + alarmList.get(pos).getId(), null);
db.close();
}
The method update is returning 0 when it should return the number of rows affected and I have already checked that the id I put in the method exists in the database. It should return 1.
¿Does anyone know where is my mistake?
Thanks in advance