java - Calling Fragment Method from Activity in Swipeable Tab Views -



java - Calling Fragment Method from Activity in Swipeable Tab Views -

i've been working on project has swipeable views tabs.

the tabs exist fragments. want run fragment method main activity on periodic basis.

to run methos, dont' have id fragment. read in other posts that:

string tag = "android:switcher:" + tabactivity.this.viewpager.getid() + ":" + "0"; tab1fragment fragment = (tab1fragment) getsupportfragmentmanager().findfragmentbytag(tag); fragment.somemethod();

will homecoming fragment desire, happens zero-th or first tab. however, running code returns nullpointer exception.

any help appreciated. :)

in code, @ point must have:

fragmentmanager fm = getsupportfragmentmanager(); fragmenttransaction ft = fm.begintransaction(); ft.replace(r.id.framelayout, new somexyzfragment(), "some_xyz_fragment"); ft.commit();

add line:

fm.executependingtransactions();

after line ft.commit();

try this. should work.

java android android-fragments tabs swipe

Comments

Post a Comment

Popular posts from this blog

model view controller - MVC Rails Planning -

model view controller - MVC Rails Planning - i'm starting rails , i'm building app stores films info, user can watch film , give grade on web application. i have coded cinema model, controller , views. now, have 2 questions: should need create model , controller grading? in case, should create or should wait , create first users model , controller? yes, on model , controller grades. that'd feasible way maintain track of who's graded what. it's create first, i'd start users, since grades depend on both films , users. ruby-on-rails model-view-controller
Read more

ruby on rails - Devise Logout Error in RoR -

ruby on rails - Devise Logout Error in RoR - while using devise in ror, encountering unusual error when trying log out url different root url. displays me : actioncontroller::invalidauthenticitytoken in devise::sessionscontroller#destroy" for illustration if rooting path after log in '/structure', , seek log out '/general' error, while logging out '/structure' fine. any help highly appreciated. ruby-on-rails ruby devise
Read more

html - Submenu setup with jquery and effect 'fold' -

html - Submenu setup with jquery and effect 'fold' - i want open submenu jquery effect fold, problem if user "hover effect" fast menu remain open, how can avoid this, jquery code is: $('ul.mainmenu li').hover( function() { $(this).children('ul').show('fold', 570); }, function() { $(this).children('ul').hide('fold', 500); } ); my jsfiddle link is: http://jsfiddle.net/9wkbf/ updated fiddle the reason behind problem is, first event $(this).children('ul').show('fold', 570); queued , until completes, sec animation not start. the next snippet can workaround $('ul.mainmenu > li').hover( function() { $(this).children('ul').show('fold', 570); }, function() { $('ul:not(.mainmenu)').hide('fold', 500); } ); *important note : work current scenario. jquery html css
Read more