ios - transitionFromViewController view not appearing -


i have following code replace 1 view in container view corresponding container view controller. copied apple documentation.

edit: apple documentation creating custom container view controllers

- (void)transitiontoviewcontroller:(uiviewcontroller*)toviewcontroller {     toviewcontroller.view.autoresizingmask = uiviewautoresizingflexiblewidth | uiviewautoresizingflexibleheight;      [self.childviewcontroller willmovetoparentviewcontroller:nil];      [self addchildviewcontroller:toviewcontroller];     // [self.view addsubview:toviewcontroller.view];       toviewcontroller.view.frame = cgrectoffset(self.view.bounds, self.view.frame.size.width, 0);      [self transitionfromviewcontroller:self.childviewcontroller                       toviewcontroller:toviewcontroller                               duration:0.5                                options:0                             animations:^{                                 toviewcontroller.view.frame = self.view.bounds;                             }                             completion: ^(bool finished) {                                 nslog(@"finished: %d", finished);                                 [self.childviewcontroller removefromparentviewcontroller];                                 [toviewcontroller didmovetoparentviewcontroller:self];                                  self.childviewcontroller = toviewcontroller;                             }];  }

when executed, toviewcontroller.view not appear. however, viewwillappear , viewdidappear getting called in toviewcontroller.view. in completion block, value of finished false. not working correctly.

i know transitionfromviewcontroller add toviewcontroller.view view hierarchy. if uncomment line addsubview manually adding it, view appear, appearance methods on view getting called multiple times. , in case finished value in completion block true.

welcomeviewcontroller viewwillappear welcomeviewcontroller viewwillappear welcomeviewcontroller viewdidappear finished: 1 welcomeviewcontroller viewdidappear

i'm pretty sure should not manually adding view view hierarchy based on several other examples. why isn't working?

turned out code above correct , problem elsewhere. problem first time through transition, self.childviewcontroller.view not in view hierarchy. self.childviewcontroller in view controller hierarchy view not.


Comments

Post a Comment

Popular posts from this blog

php - Why I am getting the Error "Commands out of sync; you can't run this command now" -

the documentation of error mentioned in title says if commands out of sync; can't run command now in client code, calling client functions in wrong order. this can happen, example, if using mysql_use_result() , try execute new query before have called mysql_free_result(). can happen if try execute 2 queries return data without calling mysql_use_result() or mysql_store_result() in between. from here: http://dev.mysql.com/doc/refman/5.0/en/commands-out-of-sync.html but in first query not fetching data mysql database, inserting. , in second query getting data database. here code $connection = mysqli_connect("localhost","username","password","tbl_msgs"); if(mysqli_connect_errno($connection)) { die("failed connect mysql: " . mysqli_connect_error()); } $query = "insert users (total_comments, total_views) values ({$total_comments}, {$total_views});"; $query .= "insert msgs (no...
Read more

linux - Does gcc have any options to add version info in ELF binary file? -

i mean whether gcc can insert source code version infor elf binary section or similar. not want change source file, add info gcc option in makefile. you can emit version info text file, turn text file object file statically link executable. the first step simple have write code: script or write version info in format plain text file. write makefile rule produce version.o version.txt, using objcopy . you'll have object file 2 useful symbols defined in it: beginning , end of textual version info. add generated object executable, , you'll able access version 2 ways: running strings on binary, or writing code in application print version string (you'll need declare start , end symbols variables in header file).
Read more

java - Are there any classes that implement javax.persistence.Parameter<T>? -

i'm using named queries fetch entities database using jpa , hibernate , came across puzzling me: how come there no default implementations of javax.persistence.parameter interface? i rather impressed how @staticmetamodel used criteriabuilder in jpa2 meaning type safety , don't have mess around setting string names. wanted apply similar of jpa1 ejb's i'm working on: dealergroup_.class: public dealergroup_ { public parameter<integer> id = new parameterimpl<integer>("id"); /// etc... } dealergroupfacade.class: // ... public dealergroup fetch(integer id) { typedquery<dealergroup> query = em.createnamedquery("dealergroup.fetchbyid", dealergroup.class); query.setparameter(dealergroup_.id, query); return query.getsingleresult(); } // ... i surprised find there no implementations of parameter interface - of course, implement myself absence makes me suspicious may mistake using in way? should implementing parameter...
Read more