ios - Change UINavigationbar title according to UICollectionView Cell -

-

im trying change title of uinavigationbar title according uicollectionview cell indexpath.row, have horizontal uicollectionview cells photo sliding-content (as photo app in ios).

what trying achieve when move indexpath.row example 1 2 change title having 1 issue, i've placed following code in cellforitematindexpath or willdisplaycell : 

self.title = "\(indexpath.row+1) of 2"

this code works fine has 1 issue, when start dragging next cell return i, title changed 2 still in 1 ! annoying !

i've tried place code in scrollviewdidenddecelerating has same issue, started dragging changed mind stay on cell 1 method says okey end dragging, title again changes 2 still in one.

i need since if still don't have change title, if in next cell change title.

it happening because method cellforitematindexpath called prepare second item, first cell still in memory , method cellforitematindexpath not called when return first. try this:

-(void)scrollviewdidenddecelerating:(nonnull uiscrollview *)scrollview {         float currentpage = self.collectionview.contentoffset.x / self.collectionview.frame.size.width;         nslog(@"current page: %f", ceil(currentpage)); }

don't forget add uiscrollviewdelegatein collectionviewcontroller.h


Comments

Post a Comment

Popular posts from this blog

mysql - FireDac error 314 - but DLLs are in program directory -

-
i getting when trying access mysql database : [firedac][phys][mysql]-314. cannot load vendor library [libmysql.dll or libmysqlld.dll] this did not happen (unchanged) code, however, have upgraded windows 10 , had reinstall delphi xe8, system configuration matter. in order try solve problem, copied both of files c:\windows\sysytem32. when did not seem work, copied them \win32\debug, generated .exe resides. i imagine doing rather stupid, can't see what. the proper solution place driver file (eg., libmysql.dll ) in application's folder, or place installation location in fddrivers.ini file: [mysql] vendor=<folder>\libmysql.dll (recent versions of documentation seem use vendorlib instead of vendor in ini file.) see rad studio documentation topics configuring drivers (firedac) , connect mysql server (firedac) more information.
Read more

Log not being recorded for quickfix c++ Session -

-
i running fix initiator , succesfully connecting acceptor. problem is, no log being recorded. .cfg application written below. [default] connectiontype=initiator reconnectinterval=2 resetonlogon=y filestorepath=store filelogpath=logging starttime=00:00:00 endtime=00:00:00 usedatadictionary=y # standard config elements [session] # inherit connectiontype, reconnectinterval , sendercompid default beginstring=fix.4.4 sendercompid=init targetcompid=accept socketconnecthost=xxx socketconnectport=xxx heartbtint=30 datadictionary=fix44md.xml [session] beginstring=fix.4.4 sendercompid=init targetcompid=accept1 socketconnecthost=xxx socketconnectport=xxx heartbtint=30 datadictionary=fix44oms.xml the excerpt code initiates connection written below: std::string file = argv[ 1 ]; fix::sessionsettings settings( file ); application application; fix::filestorefactory storefactory( settings ); fix::screenlogfactory logfactory( settings ); fix::socketinitiator initi...
Read more

.net - Using different ADO.NET providers dynamically with Entity Framework -

-
my application can work different databases sql server, mysql, oracle, postgresql or sqlite. knows how load relevant ado.net assembly (its dll file name known) , find dbproviderfactory type in it. factory gives me need work database connection on plain ado.net level. entering entity framework. used use own o/rm want replace ef 6 code first. own o/rm generated sql , ran dbcommand class. ef seems lot more , require special configuration. can't add assembly references supported database client provider , require deploying files. need solution loads assemblies @ runtime dynamically , finds way there. then, depending on database shall used, deploy dlls required that. for doesn't work yet. error message postgresql: system.notsupportedexception: unable determine provider name provider factory of type 'npgsql.npgsqlfactory'. make sure ado.net provider installed or registered in application config. this happens when try add entity dbset . database server co...
Read more