NSURL URLWithString relativeToURL example ios

URLWithString :relativeToURL:

Creates and returns an NSURL object initialized with a base URL and a relative string.

+ (id)URLWithString:(NSString *)URLString relativeToURL:(NSURL *)baseURL

Parameters of [NSURL URLWithString]

URLString

The string with which to initialize the NSURL object. May not be nil. Must conform to RFC 2396. URLString is interpreted relative to baseURL.

baseURL

The base URL for the NSURL object.

Return Value

An NSURL object initialized with URLString and baseURL. If URLString was malformed, returns nil.

Discussion of [NSURL URLWithString]

This method expects URLString to contain any necessary percent escape codes.

Example of [NSURL URLWithString]

- (void)testCreatingQueryURLfromBaseURL
{
    NSURL *url = [NSURL URLWithString:@"http://foo.com/bar/baz"];

    url = [NSURL URLWithString:@"?x=1&y=2&z=3" relativeToURL:url];

    STAssertEqualObjects([url absoluteString], @"http://foo.com/bar/baz?x=1&y=2&z=3", nil);
}

Example of [NSURL URLWithString]

NSURL *newsUrl = [NSURL URLWithString:@"/Document/News/1593" relativeToURL:[NSURL URLWithString:@"http://exist.ru"]]:




NSURL URLWithString example ios

URLWithString:

Creates and returns an NSURL object initialized with a provided string.

+ (id)URLWithString:(NSString *)URLString

Parameters of [NSURL URLWithString]

URLString

The string with which to initialize the NSURL object. Must be a URL that conforms to RFC 2396. This method parses URLString according to RFCs 1738 and 1808. (To create NSURL objects for file system paths, use fileURLWithPath:isDirectory: instead.)

Return Value

An NSURL object initialized with URLString. If the string was malformed, returns nil.

Discussion of [NSURL URLWithString]

This method expects URLString to contain any necessary percent escape codes, which are ‘:’, ‘/’, ‘%’, ‘#’, ‘;’, and ‘@’. Note that ‘%’ escapes are translated via UTF-8.

Example of [NSURL URLWithString] - 1

NSString *myString = @"http://foo.bar/?key[]=value[]<>";
NSURL *myUrl = [NSURL URLWithString:[myString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];

Example of [NSURL URLWithString] - 2

//localisationName is a arbitrary string here
NSString* webName = [localisationName stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]; 
NSString* stringURL = [NSString stringWithFormat:@"http://maps.google.com/maps/geo?q=%@,Montréal,Communauté-Urbaine-de-Montréal,Québec,Canadae&output=csv&oe=utf8&sensor=false", webName];
NSString* webStringURL = [stringURL stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSURL* url = [NSURL URLWithString:webStringURL];