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iOS

Posted by maytelabargamalaga
maytelabargamalaga
Courses Plus Student 6,465 Points

IOS Reset Password using Parse

I am trying to create am Alert View that let you introduce your email con compare with Parse. Finally when result is succeded parse send you an email giving you the positibility to rest your password.

Here is my code

`- (IBAction)contraseƱa:(id)sender {

UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Direccion de Correo" message:@"Introduzca su correo electronico:" delegate:self cancelButtonTitle:@"Cancelar" otherButtonTitles:@"Aceptar", nil];
alertView.alertViewStyle = UIAlertViewStylePlainTextInput;
[alertView show];

}

  • (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex { if (buttonIndex != [alertView cancelButtonIndex]) { UITextField *emailTextField = [alertView textFieldAtIndex:0];

    PFQuery *query = [PFUser query];
[query whereKey:@"email" equalTo:self.emailTextField.text];
[query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {

    if (!error) {
        // The find succeeded.
        if (objects.count > 0) {
            //the query found a user that matched the email provided in the text field, send the email
            [self sendEmail:emailTextField.text];

        } else {

            //the query was successful, but found 0 results
            //email does not exist in the database, dont send the email
            //show your alert view here
        }
    } else {
        // Log details of the failure
        NSLog(@"Error: %@ %@", error, [error userInfo]);
    }
}];

    }

    • (void)sendEmail:(NSString *)email{ [PFUser requestPasswordResetForEmailInBackground:email];

    }

My problem exactly is that sendEmail needs to declared identifier. What is that? What I need to do?

Thanks indeed Mayte

Stone Preston
Stone Preston
42,016 Points
Stone Preston
Stone Preston
42,016 Points

can you post the error/warning you are getting. everything looks good to me a a quick glance

5 Answers

maytelabargamalaga
PLUS
maytelabargamalaga
Courses Plus Student 6,465 Points
maytelabargamalaga
maytelabargamalaga
Courses Plus Student 6,465 Points

Hello Stone. Thanks you so much for your answer. Now I write you the error from Console:

''' 2014-09-07 16:03:36.871 pedidos[824:60b] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Cannot do a comparison query for type: (null)' '''

maytelabargamalaga
PLUS
maytelabargamalaga
Courses Plus Student 6,465 Points
maytelabargamalaga
maytelabargamalaga
Courses Plus Student 6,465 Points

Do you have any idea about it?

maytelabargamalaga
PLUS
maytelabargamalaga
Courses Plus Student 6,465 Points
maytelabargamalaga
maytelabargamalaga
Courses Plus Student 6,465 Points

Thanks in advance

Stone Preston
Stone Preston
42,016 Points
Stone Preston
Stone Preston
42,016 Points

the problem is you are referencing self.emailTextField.text. you most likely dont have a property called emailTextField, you just created a local text field variable. change it from self.emailTextField to just emailTextField

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
    if (buttonIndex != [alertView cancelButtonIndex]) {
        //here is where you declare the local text field
        UITextField *emailTextField = [alertView textFieldAtIndex:0];

        PFQuery *query = [PFUser query];
        //reference the local text field here
        [query whereKey:@"email" equalTo:emailTextField.text];
        [query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {

            if (!error) {
                // The find succeeded.
                if (objects.count > 0) {
                    //the query found a user that matched the email provided in the text field, send the email
                    [self sendEmail:emailTextField.text];

                } else {

                    //the query was successful, but found 0 results
                    //email does not exist in the database, dont send the email
                    //show your alert view here
                }
            } else {
                // Log details of the failure
                NSLog(@"Error: %@ %@", error, [error userInfo]);
            }
        }];
    }
maytelabargamalaga
maytelabargamalaga
Courses Plus Student 6,465 Points

Hello Stone. Now I have most that I need but I find one problem. I am not sure where I need to put the AlertView. I want to have two. One that say: "Ok. We send you an email to reset the password" and the other: " email not found". I do the first but the second I can not so it.

''

  • (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex { if (buttonIndex ==1) { UITextField *emailTextField = [alertView textFieldAtIndex:0];

    PFQuery *query = [PFUser query];
[query whereKey:@"email" equalTo:self.emailTextField.text];
[query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {

    if (!error) {
        // The find succeeded.
        if (objects.count == 0) {
            //the query found a user that matched the email provided in the text field, send the email
            [self sendEmail:emailTextField.text];
            UIAlertView *alertView =[[UIAlertView alloc]initWithTitle:@"Correo enviado" message:@"Por favor, revise su correo para resetear su contraseƱa" delegate:self cancelButtonTitle:@"Cancelar" otherButtonTitles:nil];
            [alertView show];

        } else {

            UIAlertView *alertView =[[UIAlertView alloc]initWithTitle:@"Correo no encontrado" message:@"Por favor, introduzca un correo electronico valido" delegate:self cancelButtonTitle:nil otherButtonTitles:@"Aceptar", nil];
            [alertView show];
        }
    } else {
        // Log details of the failure
        NSLog(@"Error: %@ %@", error, [error userInfo]);
    }

}];

    } }

''

maytelabargamalaga
PLUS
maytelabargamalaga
Courses Plus Student 6,465 Points
maytelabargamalaga
maytelabargamalaga
Courses Plus Student 6,465 Points

Thanks once again Stone. The last question. I have create this property that you have told. I found a problem. This property is empty because I need to join it to email text label that I have already create in SiginView Controller. I am working in LoginViewController. How can I join this information.

Thanks indeed.

Mayte