How to localize a string with formatting placeholders?

I need to translate text in controller.body

My code:

controller.body = [NSString stringWithFormat:@"\n\n"
                                                    "Label 1: %@ \n"
                                                    "Label 2: %@ \n"
                                                    "Label 3: %@ \n"
                                                    "Label 4: %@", label1.text, label2.text, label3.text, label4.text];

I have file Localizable.strings, how can I localize a string with formatting placeholders? I mean that text "Label 1", "Label 2" etc...

You will need to use NSLocalizedString

your localizable.string will look like

"Label 1: %@ \n" = "your label";
"Label 2: %@ \n" = "your label";
//And so on...

And your code

controller.body = [NSString stringWithFormat:@"\n\n",
                                             NSLocalizedString(@"Label 1: %@ \n", nil),
                                             NSLocalizedString(@"Label 2: %@ \n", nil),
                                             etc....];