iOS obtain network data file name / path

. 1 NSString the urlString * = @ " http://www.baidu.com/img/baidu_logo_fqj_10.gif " ;
 2      // Method a: The most direct 
. 3      NSString * fileName = [the urlString lastPathComponent];
 . 4      NSLog ( @ " fileName == @% " , fileName);
 . 5      // method two: The segmentation characters or strings 
. 6      NSString filename2 * = [[NSString the alloc] the init];
 . 7      NSArray separatedArray * = [[NSArray the alloc] the init];
 . 8      separatedArray = [the urlString componentsSeparatedByString: @ " / " ];
 . 9     = filename2 [separatedArray lastObject];
 10      NSLog ( @ " separatedArray ==% @ " , separatedArray);
 . 11      NSLog ( @ " filename2 ==% @ " , filename2);
 12 is      // Method three: as a link Road King 
13 is      NSArray urlCom * = [[NSArray the alloc] initWithArray: [the urlString pathComponents]];
 14      NSLog ( @ " [urlCom lastObject] ===% @ " , [urlCom lastObject]);
 15      // method IV: NSRange it. interception of binary files is very convenient when 
16      NSString * filename3;
 17      NSRange the Range = [urlString rangeOfString:@ " / " Options: NSBackwardsSearch]; // NSBackwardsSearch retrieved from the start end of the string 
18 is      IF (range.location =! NSNotFound) {
 . 19          filename3 = [the urlString substringFromIndex: range.location + . 1 ];
 20 is          IF ([[filename3 lowercaseString] hasSuffix: @ " .gif " ]) { // lowercaseString change uppercase to lowercase letters cut letters uppercaseString change capitalizedString initial capital letters converter · 
21 is              NSLog ( @ " filename3 ====% @ " , filename3);
 22 is          } the else {
 23 is          
24          }
25     }else{
26     
27     }