NSString stringWithFormat example ios

stringWithFormat:

Returns a string created by using a given format string as a template into which the remaining argument values are substituted.

+ (id)stringWithFormat:(NSString *)format, ...

Parameters

format

A format string. See “Formatting String Objects” for examples of how to use this method, and “String Format Specifiers” for a list of format specifiers. This value must not be nil.

Important: Raises an NSInvalidArgumentException if format is nil.

...

A comma-separated list of arguments to substitute into format.

Return Value of [NSString stringWithFormat]

A string created by using format as a template into which the remaining argument values are substituted according to the canonical locale.

Discussion of [NSString stringWithFormat]

This method is similar to localizedStringWithFormat:, but using the canonical locale to format numbers. This is useful, for example, if you want to produce “non-localized” formatting which needs to be written out to files and parsed back later.

Example of [NSString stringWithFormat]

NSString *lastName = (NSString *)ABRecordCopyValue(personRef, kABPersonLastNameProperty);
cell.text = [NSString stringWithFormat:@"%@%@",lastName?[NSString stringWithFormat:@"%@ ",lastName]:@"",(NSString *)ABRecordCopyValue(personRef, kABPersonFirstNameProperty)?:@""];

Example of [NSString stringWithFormat]

NSString *parameter1 = @"1";
NSString *parameter2 = @"2";

NSString *myString;
myString = [NSString stringWithFormat:@"I want to print parameter1 here: %1$@, parameter2 here: %2$@ and now access parameter1 again: %1$@ _without_ passing it again.",parameter1, parameter2];

Example of [NSString stringWithFormat]

NSString* format = [NSString stringWithFormat:@"%%0%dd", maxLength];
NSString *s = [NSString stringWithFormat:format, 10];
NSLog(@"%@", s);

NSString stringWithFormat example objc

Following code fragment shows how to use NSString:stringWithFormat method. stringWithFormat method performs the same work as C's printf() function. The object created by stringWithFormat is auto-released. Please note that you should prefix @ to all Objective-C strings.

NSString *urlString = [NSString stringWithFormat:@"%@/accounts/%d/apps/%d/dev-msgs", ILIME_BASE_URL, ILIME_ACCOUNT_ID, ILIME_APP_ID];
NSString *sendMessage = [NSString stringWithFormat:messageText.text];
NSString *requestBody = [NSString stringWithFormat:@"%@< notificationRequest>", sendMessage]; NSURL* url = [NSURL URLWithString:urlString]; [self postMessage:requestBody toURL:urlString];