Checking the TextField Values are Empty and Email Validation.

-(IBAction)SaveButton:(id)sender{

    

 NSString *msgStr = @"";

BOOL bErr = NO;

    NSString *emailRegEx = @"[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,4}";

    NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", emailRegEx];

    

    if(imageView.image==[UIImage imageNamed:@"noimage.jpeg"]) {

msgStr = @"Choose an Image";

bErr = YES;

    }

    else if(nameField.text.length == 0) {

msgStr = @"Please provide your name";

bErr = YES;

[nameField becomeFirstResponder];

}

else if(districtField.text.length == 0) {

msgStr = @"Please provide your District";

bErr = YES;

[districtField becomeFirstResponder];

}else if(emailField.text.length == 0) {

msgStr = @"Please provide your email";

bErr = YES;

[emailField becomeFirstResponder];

}

    

    

    else if ([emailTest evaluateWithObject:emailField.text] == NO)

    {

        

        msgStr = @"Invalid Email Id! Please try again";

bErr = YES;

[emailField becomeFirstResponder];

    }

    

    

if(bErr) {

UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Error" message:msgStr delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles:nil];

[alert show];

//[alert release];

return;

}

}