ios - Swipe Left and Right to load item -

-

i had array contains 10 items 1,2,3,4,5,6,7,8,9,10. when load page item @ 3. when user swipe left go 4 , swipe right go 2. may know how it?

newsid=[[nsmutablearray alloc]init]; [newsid addobject:@"1"]; [newsid addobject:@"2"]; [newsid addobject:@"3"]; [newsid addobject:@"4"]; [newsid addobject:@"5"]; [newsid addobject:@"6"]; [newsid addobject:@"7"]; [newsid addobject:@"8"]; [newsid addobject:@"9"]; [newsid addobject:@"10"]; uiswipegesturerecognizer * swipeleft=     [[uiswipegesturerecognizer alloc]initwithtarget:self action:@selector(swipeleft:)]; swipeleft.direction=uiswipegesturerecognizerdirectionleft; [self.view addgesturerecognizer:swipeleft]; uiswipegesturerecognizer * swiperight=     [[uiswipegesturerecognizer alloc]initwithtarget:self action:@selector(swiperight:)]; swiperight.direction=uiswipegesturerecognizerdirectionright; [self.view addgesturerecognizer:swiperight];

try this. taking 1 uilabel , changing text of while swiping.and 1 int variable keep track of swipe.

- (void)viewdidload  {    [super viewdidload];    newidarray = @[@"1",@"2",@"3",@"4",@"5",@"6",@"7",@"8",@"9",@"10"];    num_index = 3;    valuelabel.text = [newidarray objectatindex:num_index];    leftgesture = [[uiswipegesturerecognizer alloc]init];    leftgesture.direction = uiswipegesturerecognizerdirectionleft;    [leftgesture addtarget:self action:@selector(performswipegesture:)];    [self.view addgesturerecognizer:leftgesture];    rightgesture = [[uiswipegesturerecognizer alloc]init];    rightgesture.direction = uiswipegesturerecognizerdirectionright;    [rightgesture addtarget:self action:@selector(performswipegesture:)];    [self.view addgesturerecognizer:rightgesture];  }     - (ibaction)performswipegesture:(uiswipegesturerecognizer *)sender  {      if (sender.direction == uiswipegesturerecognizerdirectionleft)      {        if (num_index <9)        {          num_index = num_index +1;          valuelabel.text = [newidarray objectatindex:num_index];        }      }      else if (sender.direction == uiswipegesturerecognizerdirectionright)      {          if (num_index >0)           {             if (num_index >1)               num_index = num_index -2;             else               num_index = num_index -1;             valuelabel.text = [newidarray objectatindex:num_index];          }      } }

Comments

Post a Comment

Popular posts from this blog

python - How to create jsonb index using GIN on SQLAlchemy? -

-
here's current code creating index jsonb. index("mytable_data_idx_id_key", mytable.data['id'].astext, postgresql_using='gin') but got error. sqlalchemy.exc.programmingerror: (psycopg2.programmingerror) data type text has no default operator class access method "gin" hint: must specify operator class index or define default operator class data type. [sql: "create index event_data_idx_id_key on event using gin ((data ->> 'id'))"] is there way create index on sqlalchemy? the postgresql specific sqlalchemy docs @ http://docs.sqlalchemy.org/en/latest/dialects/postgresql.html#operator-classes mention postgresql_ops dictionary provide "operator class" used postgresql, , provide example illustrating use: index('my_index', my_table.c.id, my_table.c.data, postgresql_ops={ 'data': 'text_pattern_ops', ...
Read more

PHP DOM loadHTML() method unusual warning -

-
i had following code works fine on localhost: $document = new domdocument(); $document->loadhtml($p_result); $form = $document->getelementsbytagname('form')->item(0); // code continues using $form variable after same code updated on outside server, loadhtml() failed , issued warning. warning: domdocument::loadhtml() expects parameter 1 valid path, string given in path/name/to/script.php returned null instead of object code pretty gets fatal error. note contents of $p_result absolutely same on outside server , on localhost. but why displays kind of warning , why not work? doesn't loadhtml() expects argument 1 string in first place? why method expects parameter 1 valid path ? just make clear i'm not calling loadhtmlfile() , i'm calling loadhtml() . thanks. you're affected one of php bugs . issue present in php 5.6.8 , 5.6.9. have affected php version on server, , bug-free version on localhost. the bug forbids null ...
Read more

c# - TransactionScope not rolling back although no complete() is called -

-
i'm using transactionscope rollback transaction fail bool errorreported = false; action<importerrorlog> newerrorcallback = e => { errorreported = true; errorcallback(e); }; using (var transaction = new transactionscope()) { foreach (importtaskdefinition task in taskdefinition) { loader.load(streamfile, newerrorcallback, task.destinationtable, processingtaskid); } if (!errorreported) transaction.complete(); } i'm sure there no transactionscope started ahead or after code. i'm using entity framework insert in db. regardless state of errorreported transaction never rolled in case of error. what missing ? transactionscope sets transaction.current . that's does. wants transacted must @ property. i believe ef each time connection opened reason. probably, connection open when scope installed. open connection inside of scope or enlist manually. ef has nasty "design decision": default opens ...
Read more