ios - How to prevent button resize when zoom super view? -

i adding multiple gestures in 1 view, view have 1 close button @ corner of view, working fine when zoom view close button zoom view, want zoom view not close button, please suggest me how ?

see below image reference.

code pinch zoom

   -(void)addstickerswithview:(uiview*)view image:(uiimage*)image{      cgpoint center = self.imgphoto.center;     uiimageview *imgview = [[uiimageview alloc] initwithimage:image];     uirotationgesturerecognizer *rotationgesture = [[uirotationgesturerecognizer alloc] initwithtarget:self action:@selector(rotatepiece:)];     [imgview setcontentmode:uiviewcontentmodescaletofill];     uiview *viewzoom = [[uiview alloc] initwithframe:cgrectmake(center.x-45,center.y-45, 90, 90)];    // [viewzoom setbackgroundcolor:[uicolor redcolor]];     imgview.frame = cgrectmake(5, 5, cgrectgetwidth(viewzoom.frame)-10, cgrectgetheight(viewzoom.frame)-10);     [viewzoom addsubview:imgview];     [viewzoom addgesturerecognizer:rotationgesture];      uipinchgesturerecognizer *pinchgesture = [[uipinchgesturerecognizer alloc] initwithtarget:self action:@selector(scalepiece:)];     [pinchgesture setdelegate:self];     [viewzoom addgesturerecognizer:pinchgesture];      uipangesturerecognizer *pangesture = [[uipangesturerecognizer alloc] initwithtarget:self action:@selector(moveimage:)];     [pangesture setminimumnumberoftouches:1];     [pangesture setmaximumnumberoftouches:1];     [viewzoom addgesturerecognizer:pangesture];      uibutton *btnclosesticker = [uibutton buttonwithtype:uibuttontypecustom];      [btnclosesticker setbounds:cgrectmake(0, 0, 30,30)];     [btnclosesticker setimage:[uiimage imagenamed:@"close1.png"] forstate:uicontrolstatenormal];     [btnclosesticker addtarget:self action:@selector(buttonpressed:) forcontrolevents:uicontroleventtouchupinside];     self.stickercount++;     btnclosesticker.tag = self.stickercount;     uitapgesturerecognizer *tapgesture = [[uitapgesturerecognizer alloc]initwithtarget:self action:@selector(taptoshowclose:)];     tapgesture.numberoftapsrequired = 2;     [viewzoom addgesturerecognizer:tapgesture];     viewzoom.layer.bordercolor = [uicolor whitecolor].cgcolor;     viewzoom.layer.borderwidth = 3.0;     viewzoom.tag = self.stickercount+ktagborder;     [viewzoom addsubview:btnclosesticker];      [view addsubview:viewzoom]; }  -(void)hideshowborderclosebutton{     int bordercount = self.stickercount-ktagborder;     for(int i=1;i<=bordercount;i++){         uiview *view = [self.viewstickers viewwithtag:i+ktagborder];         uiview *view1 = [self.viewstickers viewwithtag:i+(ktagborder*2)];         view.hidden = yes;         view1.layer.borderwidth = 0.0;     } }  -(void)buttonpressed:(id)sender{     uiview *view = [sender superview];     [view removefromsuperview];     self.stickercount--; }  - (void)scalepiece:(uipinchgesturerecognizer *)gesturerecognizer {     if([gesturerecognizer state] == uigesturerecognizerstatebegan) {         // reset last scale, necessary if there multiple objects different scales         lastscale = [gesturerecognizer scale];     }     uibutton *btn = [self.viewstickers viewwithtag:gesturerecognizer.view.tag-ktagborder];     if ([gesturerecognizer state] == uigesturerecognizerstatebegan ||         [gesturerecognizer state] == uigesturerecognizerstatechanged) {          cgfloat currentscale = [[[gesturerecognizer view].layer valueforkeypath:@"transform.scale"] floatvalue];          // constants adjust max/min values of zoom         const cgfloat kmaxscale = 3.0;         const cgfloat kminscale = 1.0;          cgfloat newscale = 1 -  (lastscale - [gesturerecognizer scale]);         newscale = min(newscale, kmaxscale / currentscale);         newscale = max(newscale, kminscale / currentscale);         cgaffinetransform transform = cgaffinetransformscale([[gesturerecognizer view] transform], newscale, newscale);         [gesturerecognizer view].transform = transform;          lastscale = [gesturerecognizer scale];  // store previous scale factor next pinch gesture call     } }  -(void)taptoshowclose:(uitapgesturerecognizer *)gesturerecognizer{     //int bordercount = self.stickercount-ktagborder;      uiview *view = gesturerecognizer.view; //cast pointer derived class if needed     view.layer.borderwidth = 2.0;     uiview *view1 = [self.viewstickers viewwithtag:view.tag-ktagborder];     [(uibutton*)view1 setimage:[uiimage imagenamed:@"close1.png"] forstate:uicontrolstatenormal];     [view1 setbounds:cgrectmake(0, 0, 30,30)];      view1.hidden = no; }  - (void)moveimage:(uipangesturerecognizer *)recognizer {     cgpoint newcenter = [recognizer translationinview:self.view];     [self hideshowborderclosebutton];  if([recognizer state] == uigesturerecognizerstatebegan) {         beginx = recognizer.view.center.x;         beginy = recognizer.view.center.y;     }     newcenter = cgpointmake(beginx + newcenter.x, beginy + newcenter.y);          [recognizer.view setcenter:newcenter];  }   - (bool)gesturerecognizer:(uigesturerecognizer *)gesturerecognizer shouldrecognizesimultaneouslywithgesturerecognizer:(uigesturerecognizer *)othergesturerecognizer {     // if gesture recognizers on different views, don't allow simultaneous recognition     if (gesturerecognizer.view != othergesturerecognizer.view)         return no;      // if either of gesture recognizers long press, don't allow simultaneous recognition     if ([gesturerecognizer iskindofclass:[uilongpressgesturerecognizer class]] || [othergesturerecognizer iskindofclass:[uilongpressgesturerecognizer class]])         return no;      return yes; }  - (void)rotatepiece:(uirotationgesturerecognizer *)gesturerecognizer {     [self adjustanchorpointforgesturerecognizer:gesturerecognizer];     [self hideshowborderclosebutton];      if ([gesturerecognizer state] == uigesturerecognizerstatebegan || [gesturerecognizer state] == uigesturerecognizerstatechanged) {         [gesturerecognizer view].transform = cgaffinetransformrotate([[gesturerecognizer view] transform], [gesturerecognizer rotation]);         [gesturerecognizer setrotation:0];     } } - (void)adjustanchorpointforgesturerecognizer:(uigesturerecognizer *)gesturerecognizer {     [self hideshowborderclosebutton];      if (gesturerecognizer.state == uigesturerecognizerstatebegan) {         uiview *piece = gesturerecognizer.view;         cgpoint locationinview = [gesturerecognizer locationinview:piece];         cgpoint locationinsuperview = [gesturerecognizer locationinview:piece.superview];          piece.layer.anchorpoint = cgpointmake(locationinview.x / piece.bounds.size.width, locationinview.y / piece.bounds.size.height);         piece.center = locationinsuperview;     } } 

in place of scaling view. it's batter calculate frame zoom level. , update frame of view. check out below method.

- (ibaction)scalepiece:(uipinchgesturerecognizer *)gesturerecognizer {     if([gesturerecognizer state] == uigesturerecognizerstatebegan) {         // reset last scale, necessary if there multiple objects different scales         lastscale = [gesturerecognizer scale];     }      if ([gesturerecognizer state] == uigesturerecognizerstatebegan ||         [gesturerecognizer state] == uigesturerecognizerstatechanged) {          cgfloat newscale = 1 -  (lastscale - [gesturerecognizer scale]);         [self changescale:newscale];          lastscale = [gesturerecognizer scale];  // store previous scale factor next pinch gesture call     } }  -(void)changescale :(float)newscale{      cgaffinetransform transform = cgaffinetransformscale([viewforpinch transform], newscale, newscale);     viewforpinch.transform = transform;      float scale = viewforpinch.transform.a;     float buttonscale = 1 / scale;      btnl.transform= cgaffinetransformscale(cgaffinetransformidentity, buttonscale, buttonscale);   }