getfilename 获取文件名字

-(NSString *)GetFileName:(NSString *)url{ NSString *finalString = nil; NSString *tempString=[[NSString alloc]initWithString:[url lastPathComponent]]; NSRange range = [tempString rangeOfString:@"?"];//judge string tempString whether have "?" if (range.location == NSNotFound) // haven't "?" { finalString=tempString; } else { int i=range.location;//"?" location finalString=[tempString substringWithRange:NSMakeRange(0,i)]; } //[tempString autorelease]; return finalString; }