ios - Make UISearchController search bar automatically active -

i've implemented uisearchcontroller search bar in navigatiom bar , make search bar active when view loaded. when active, mean keyboard appears , user can type his/her search without tap search bar.

i initialised uisearchcontroller following code:

- (void)viewdidload {     self.searchcontroller = [[uisearchcontroller alloc] initwithsearchresultscontroller:nil];     [self.searchcontroller setsearchresultsupdater:self];     [self.searchcontroller setdimsbackgroundduringpresentation:no];     [self.searchcontroller sethidesnavigationbarduringpresentation:no];     [self.navigationitem settitleview:self.searchcontroller.searchbar];      [self setdefinespresentationcontext:yes];      [self.searchcontroller.searchbar setdelegate:self];     [self.searchcontroller.searchbar setshowscancelbutton:yes];     [self.searchcontroller.searchbar setplaceholder:@"city or airfield"];      [self.searchcontroller.searchbar sizetofit]; } 

i've tried make search controller active, call [self.searchcontroller.searchbar becomefirstresponder] , directly call searchbarsearchbuttonclicked nothing works.

try calling

[self.searchcontroller setactive:yes] 

before

[self.searchcontroller.searchbar becomefirstresponder] 

if above not working, try this:

- (void)viewdidload {     [super viewdidload];     ...     [self initializesearchcontroller];     .... }  - (void)viewdidappear:(bool)animated {     [super viewdidappear:animated];     [self.searchcontroller setactive:yes];     [self.searchcontroller.searchbar becomefirstresponder]; }  - (void)initializesearchcontroller {     self.searchcontroller = [[uisearchcontroller alloc] initwithsearchresultscontroller:nil];     self.searchcontroller.searchresultsupdater = self;     self.searchcontroller.dimsbackgroundduringpresentation = no;     self.searchcontroller.delegate = self;     self.searchcontroller.searchbar.delegate = self;     [self.searchcontroller.searchbar sizetofit];      [self.tableview settableheaderview:self.searchcontroller.searchbar];     self.definespresentationcontext = yes; }