Android SQLite Insert or Update

Answer 1

The operation name for that is "upsert" and how I solve it is identifying the columns of your table that make a row UNIQUE.

Example: _id, name, job, hours_worked

The columns which we'll use are name and job.

private int getID(String name, String job){
    Cursor c = dbr.query(TABLE_NAME,new String[]{"_id"} "name =? AND job=?",new String[]{name,job},null,null,null,null);
    if (c.moveToFirst()) //if the row exist then return the id
        return c.getInt(c.getColumnIndex("_id"));
    return -1;
}

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In your database manager class:

public void upsert(String name, String job){
    ContentValues values = new ContentValues();
    values.put("NAME",name);
    values.put("JOB",job);

    int id = getID(name,job);
    if(id==-1)
        db.insert(TABLE_NAME, null, values);
    else
        db.update(TABLE_NAME, values, "_id=?", new String[]{Integer.toString(id)});
}