ios - Objective-C call specific class method -

i have class has in initializer:

@implementation basefooclass  -(id) init {      if (self = [super init])      {           // initialize instance variables need start value      }       return self; }  -(id) initwithsomeint:(int) someint {      if (self = [self init]) // <-- need make sure calling basefooclass's init here, not subfooclass's, make sense?      {           self.someint = someint;      }       return self; }  @end 

that fine , dandy. problem when implement subclass:

@implementation subfooclass  -(id) init {      return [self initwithsomeint:0]; }  -(id) initwithsomeint:(int) someint {       if (self = [super init]) // <--- infinite loop (stack overflow :) )      {           // initialize other variables      } }  @end 

i need call basefooclass's init rather subfooclass's init.

i cannot change way objects initialized, converting project c# use in ipad application.

thank in advance

edit:

due asking, here header:

@interface basefooclass : nsobject  // implicit nsobject // -(id) init;  -(id) initwithsomeint:(int) someint;  // more methods  @end  @interface subfooclass : basefooclass  // implicit nsobject // -(id) init;  // implicit basefooclass //-(id) initwithsomeint:(int) someint;   @end 

objective-c doesn't work way because of way runtime converts methods function calls. self instance of allocated class, when invoking super-class's methods. need create designated initializer baseclassfoo , go there. should doing this:

@implementation basefooclass  -(id) init {   return [self initwithsomeint:0]; // redirect super class's designated initializer }  -(id) initwithsomeint:(int) someint {   if ((self = [super init])) // designated initializer calls super class's designated initializer (in case, nsobject's designated initializer init   {     self.someint = someint;   }    return self; }  @end  @implementation subfooclass  // here don't override init because our super class's designated initializer // initwithsomeint: // -(id) init // { //   return [self initwithsomeint:0]; // }  // override because it's our superclass's designated initializer, plus // ours -(id) initwithsomeint:(int) someint {   if ((self = [super initwithsomeint:someint]))   {     // initialize other sub-class specific variables   } }  @end