我正在尝试处理FragmentPagerAdapter中的片段单击，但有时会出现致命异常:kotlin.UninitializedPropertyAccessException，它表示单击监听器属性未初始化。

所以这是PagerAdapter的代码

class ApplicationListPagerAdapter( 
    fm: FragmentManager, 
    private val onListItemClick: (isSent: Boolean, application: Application) -> Unit, 
    private val onGoToScholarshipsTabClicked: () -> Unit, 
    private val onGoToPicksTabClicked: () -> Unit 
): FragmentPagerAdapter(fm, BEHAVIOR_RESUME_ONLY_CURRENT_FRAGMENT), 
    ApplicationListFragment.ClickListener { 
 
    override fun getCount(): Int { 
        return  2 
    } 
 
    override fun getItem(position: Int): Fragment { 
        val isSent = position == 1 
        val fragment = ApplicationListFragment.newInstance(isSent) 
        fragment.setApplicationSelectListener(this) 
 
        return fragment 
    } 
 
    override fun getPageTitle(position: Int): CharSequence? { 
        return if (position == 0) "PICKS" else "SENT" 
    } 
 
    override fun applicationSelected(isSent: Boolean, application: Application) { 
        onListItemClick(isSent, application) 
    } 
 
    override fun goToScholarshipsTabClicked() { 
        onGoToScholarshipsTabClicked() 
    } 
 
    override fun goToPicksTabClicked() { 
        onGoToPicksTabClicked() 
    } 
} 

private lateinit var clickListener: ClickListener 
 
fun setApplicationSelectListener(clickListener: ClickListener) { 
        this.clickListener = clickListener 
} 
 
interface ClickListener { 
 
        fun applicationSelected(isSent: Boolean, application: Application) 
        fun goToScholarshipsTabClicked() 
        fun goToPicksTabClicked() 
} 

private fun initRecyclerView(applications: List<Application>) { 
        application_list_recyclerView.adapter = ApplicationListItemsAdapter( 
            context!!, 
            applications.toMutableList(), 
            isSent, 
            this, 
            applicationViewModel.applicationService, 
            onClick = { 
                clickListener.applicationSelected(isSent, it) 
            }, 
            onDelete = { application: Application, count: Int  -> 
                scholarshipViewModel.unFavoriteScholarship(application.scholarship) 
                sharedViewModel.deletePickedScholarship(application.scholarship) 
                applicationSharedViewModel.updatePicksCount(count) 
 
                if (count == 0) { 
                    showNoApplicationsFragment() 
                } 
            }, 
            onUndoDelete = { application: Application, count: Int -> 
                sharedViewModel.undoDeletedScholarship(application.scholarship) 
                applicationSharedViewModel.updatePicksCount(count) 
 
                if (count == 1) { 
                    hideNoApplicationsFragment() 
                } 
            } 
        ) 
 
        application_list_recyclerView.layoutManager = LinearLayoutManager(context!!) 
    } 

请您参考如下方法:

界面

interface OnItemClickListener { 
//just a random method 
fun itemClicked(positon: Int) 
} 

private lateinit var listener: OnItemClickListener 
fun attachListener(listener: OnItemClickListener){ 
this.listener = listener 
} 

class MainActivity(): AppCompatActivity(), OnItemClickListener{ 
// implement interface in case you wanna use methods...  
override fun onCreate(savedInstanceState: Bundle?) { 
        super.onCreate(savedInstanceState) 
        setContentView(R.layout.activity_chat) 
 
      // calling the listener method 
      myAdapter.attachListener(this) 
  } 
}