How to localize a string with formatting placeholders?

Question

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...

Answer 1

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....];

Answer 2

Something this for localize string

controller.body = [NSString stringWithFormat:NSLocalizedString(@"Label 1: %@ ," , @"Label 2: %@ ,", @"Label 3: %@ ," , @"Label 4: %@ ,"), label1.text,label2.text,label3.text,label4.text]

Answer 3

The pattern:

NSString* stringFormat = NSLocalizedString (@"LabelStringFormat", ...);
NSString* labelText = [NSString stringWithFormat:stringFormat, label1.text, ...];

and in your localised.strings

"LabelStringFormat" = "Label 1: %@, ...";

You can even re-order the items without code by using the right string format.