ios - Set button title programatically -

i made button in storyboard , associated ibaction in header file. how can set title of button variable made displayphone , have call number well?

.h

#import <uikit/uikit.h> #import <parse/parse.h>  @interface ibthirdviewcontroller : uiviewcontroller  @property (nonatomic, strong) pfrelation *agentrelation; @property (nonatomic, strong) nsarray *agent; @property (weak, nonatomic) iboutlet uilabel *agentname; @property (strong, nonatomic) iboutlet uilabel *agentphone; @property (strong, nonatomic) iboutlet uilabel *agentemail; @property (strong, nonatomic) iboutlet uiimageview *agentimage;  - (ibaction)phonebutton:(id)sender;  @end 

.m

#import "ibthirdviewcontroller.h" #import "ibagentstableviewcontroller.h"  @interface ibthirdviewcontroller ()      @end  @implementation ibthirdviewcontroller  - (void)viewdidload {     [super viewdidload]; }  - (void)viewdidappear:(bool)animated {             [super viewdidappear:animated];      //find agent , show     self.agentrelation = [[pfuser currentuser] objectforkey:@"agentrelation"];     pfquery *query = [self.agentrelation query];      [query findobjectsinbackgroundwithblock:^(nsarray *objects, nserror *error) {         if (!error) {             // success              self.agent = objects;             // found objects             (pfobject *object in objects) {                 nslog(@"name: %@", [object objectforkey:@"name"]);                 nslog(@"email: %@", [object objectforkey:@"email"]);                  nsstring *displayemail = [object objectforkey:@"email"];                 nsstring *displayname = [object objectforkey:@"name"];                 nsstring *displayphone = [object objectforkey:@"phone"];                  pffile *thumbnail = [object objectforkey:@"profilepic"];                 nsurl *imagefileurl = [[nsurl alloc] initwithstring:thumbnail.url];                 nsdata *imagedata = [nsdata datawithcontentsofurl:imagefileurl];                   self.agentemail.text = displayemail;                 self.agentname.text = displayname;                 self.agentphone.text = displayphone;                 self.agentimage.image = [uiimage imagewithdata:imagedata];                                     }          } else {             // log details of failure             nslog(@"error: %@ %@", error, [error userinfo]);         }     }];         }  - (void)prepareforsegue:(uistoryboardsegue *)segue sender:(id)sender {     if ([segue.identifier isequaltostring:@"showeditagent"]) {         ibagentstableviewcontroller *viewcontroller = (ibagentstableviewcontroller *)segue.destinationviewcontroller;          viewcontroller.agents = [nsmutablearray arraywitharray:self.agent];     } }  - (ibaction)phonebutton:(id)sender {  }  @end 

first of need connect button xib iboutlet object:

@property (nonatomic, weak) iboutlet uibutton *displayphone; 

then set it's title in -(void)viewdidappear:(bool)animated after loading data:

- (void)viewdidappear:(bool)animated {     [super viewdidappear:animated];     //...     // load data here     //...     [self.displayphone settitle:displayphone forstate:uicontrolstatenormal]; } 

finally implement ibaction method button:

- (ibaction)phonebutton:(id)sender {     nsstring *phone = [sender titleforstate:uicontrolstatenormal];     // remove chars except of digits     static nsstring *const kdigitsstring = @"0123456789";     phone = [[phone componentsseparatedbycharactersinset:[[nscharacterset charactersetwithcharactersinstring:kdigitsstring] invertedset]] componentsjoinedbystring:@""];     // initiate call     [[uiapplication sharedapplication] openurl:[nsurl urlwithstring:[nsstring stringwithformat:@"tel:%@", phone]]]; }