ios - UIScrollView not responding to touch -

my uiscrollview not responding touch events, nor touchesbegain method being called uiviewcontroller. (also text on buttons distorted on 1 , not shown on other)

in storyboard added scrollview uiviewcontroller , added uitextfields , uibuttons scrollview

here code:

#import <uikit/uikit.h>  @interface refinesearchviewcontroller : uiviewcontroller <uitextfielddelegate, uiscrollviewdelegate> {     iboutlet uiscrollview *scroller; }  @property (strong, nonatomic) iboutlet uitextfield *namefield; @property (strong, nonatomic) iboutlet uitextfield *targetfield; @property (strong, nonatomic) iboutlet uitextfield *vendorfield; @property (strong, nonatomic) iboutlet uitextfield *catfield; @property (strong, nonatomic) iboutlet uitextfield *clonalityfield; @property (strong, nonatomic) iboutlet uitextfield *sourceorganismfield; -(ibaction) textfieldreturn: (id) sender;  #import "refinesearchviewcontroller.h" #import "dbhandler.h"  @interface refinesearchviewcontroller ()  @end  @implementation refinesearchviewcontroller  - (id)initwithnibname:(nsstring *)nibnameornil bundle:(nsbundle *)nibbundleornil {     self = [super initwithnibname:nibnameornil bundle:nibbundleornil];     if (self) {         // custom initialization     }     return self; }  - (void)viewdidload {     [scroller setscrollenabled:yes];      // set content size size our our whole frame      //scroller.frame = cgrectmake(74, 261, 620, 354);     [scroller setcontentsize:cgsizemake(2000, 2000)];     [scroller setcancancelcontenttouches:no];     [super viewdidload];     // additional setup after loading view.     self.targetfield.delegate = self;     self.namefield.delegate = self;     self.vendorfield.delegate = self;     self.clonalityfield.delegate = self;     self.sourceorganismfield.delegate = self;     self.catfield.delegate = self; }  -(void) viewwillappear:(bool)animated {     self.navigationcontroller.navigationbarhidden = yes; }  - (void)didreceivememorywarning {     [super didreceivememorywarning];     // dispose of resources can recreated. }  - (void)prepareforsegue:(uistoryboardsegue *)segue sender:(id)sender {     // if going conduct refine search     if ([[segue identifier] isequaltostring:@"refine"])     {         dbhandler *handler = [[dbhandler alloc]init];          //run searches on each of parameter aren't empty          nsstring *nameparameter = _namefield.text;         if (![nameparameter isequaltostring:@""])         {         [handler search:0 andinput:nameparameter];         }          nsstring *targetparameter = _targetfield.text;         if(![targetparameter isequaltostring:@""])         {             [handler search:1 andinput:targetparameter];         }          nsstring *vendorparameter = _vendorfield.text;         if (![vendorparameter isequaltostring:@""])         {             [handler search:2 andinput:vendorparameter];         }          nsstring *catparameter = _catfield.text;         if (![catparameter isequaltostring:@""])         {             [handler search:3 andinput:catparameter];         }          nsstring *clonalityfield = _clonalityfield.text;         if (![catparameter isequaltostring:@""])         {             [handler search:4 andinput:clonalityfield];         }          nsstring *sourcefield = _sourceorganismfield.text;         if (![sourcefield isequaltostring:@""])         {             [handler search:5 andinput:sourcefield];         }          //recursive implementation         (int = 0; < 6 ; i++)         {          }          //we shouldn't clear text fields here in personal opinion because apply search until return homescreen , reset         //current "working database"     }      //if going cancel refine search, go previous screen     else if ([[segue identifier] isequaltostring:@"cancel"])     {         //do nothing         //but more importantly....         //....clear text fields         _namefield.text = @"";         _targetfield.text = @"";         _vendorfield.text = @"";         _catfield.text = @"";         _clonalityfield.text = @"";         _sourceorganismfield.text = @"";     } }  //make stubborn keyboard go away whenever touch background -(void)touchesbegan:(nsset *)touches withevent:(uievent *)event {     [_namefield resignfirstresponder];     [_targetfield resignfirstresponder];     [_vendorfield resignfirstresponder];     [_catfield resignfirstresponder];     [_clonalityfield resignfirstresponder];     [_sourceorganismfield resignfirstresponder]; }  -(ibaction)textfieldreturn:(id)sender {     [sender resignfirstresponder]; }  //following code taken , tweaked stack overflow //- (void)textfielddidbeginediting:(uitextfield *)textfield //{ //    [self animatetextfield: textfield up: yes]; //    nslog(@"yo"); //} // // //- (void)textfielddidendediting:(uitextfield *)textfield //{ //    [self animatetextfield: textfield up: no]; //} // //- (void) animatetextfield: (uitextfield*) textfield up: (bool) //{ //    const int movementdistance = 216; //height of keyboard //    const float movementduration = 0.3f; // duration of animation //     //    int movement = (up ? -movementdistance : movementdistance); //     //    [uiview beginanimations: @"anim" context: nil]; //    [uiview setanimationbeginsfromcurrentstate: yes]; //    [uiview setanimationduration: movementduration]; //    self.view.frame = cgrectoffset(self.view.frame, 0, movement); //    [uiview commitanimations]; //}  @end 

make sure scrollview's delegate set in storyboard , scrollview's userinteractionenabled set.