Created
July 10, 2018 19:23
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class EventFragment { | |
companion object { | |
var fragmentEventsView : FragmentEventsView? = null | |
fun register(fragmentEventsView: FragmentEventsView) { | |
this.fragmentEventsView = fragmentEventsView | |
} | |
fun unRegister() { | |
this.fragmentEventsView = null | |
} | |
fun emitterUpdateUI(position: Int) { | |
if (this.fragmentEventsView != null) { | |
this.fragmentEventsView!!.onUpdateUI(position) | |
} | |
} | |
} | |
interface FragmentEventsView { | |
fun onUpdateUI(position: Int) | |
} | |
} | |
in fragment | |
class BlankFragment : Fragment() { | |
private lateinit var view : View | |
private val currentPosition = 2 | |
override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? { | |
view = inflater.inflate(R.layout.fragment_blank, container, false) | |
EventFragment.register(object : EventFragment.FragmentEventsView { | |
override fun onUpdateUI(position: Int) { | |
if (position == currentPosition) { | |
if(isVisible) { | |
presenter.findOne(App.token, App.credentialId) | |
} | |
} | |
} | |
}) | |
return view | |
} | |
override fun onDestroy() { | |
super.onDestroy() | |
EventFragment.unRegister() | |
} | |
} | |
in viewpager | |
navigationTabBar.setOnPageChangeListener(object : ViewPager.OnPageChangeListener { | |
override fun onPageScrolled(position: Int, positionOffset: Float, positionOffsetPixels: Int) { | |
} | |
override fun onPageSelected(position: Int) { | |
EventFragment.emitterUpdateUI(position) | |
} | |
override fun onPageScrollStateChanged(state: Int) { | |
} | |
}) |
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