I Created Horizontal Cards But They Arent Showing In My Fragments?

I tried to create horizontal RecyclerView and Bottom Navigation View. I made horizontal_card_item.xml, HorizontalView.kt (class), DataSource.kt , and HorizontalViewAdapter File, fo

Solution 1:

Check if this works. If not, post the issue you face after this change.

classMainActivity : AppCompatActivity() {

    privatelateinitvar horizontalViewAdapter: HorizontalViewAdapter

    overridefunonCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        val navView: BottomNavigationView = findViewById(R.id.nav_view)
        val navController = findNavController(R.id.nav_host_fragment)
        val appBarConfiguration = AppBarConfiguration(setOf(
                R.id.navigation_home, R.id.navigation_dashboard, R.id.navigation_notifications))
        setupActionBarWithNavController(navController, appBarConfiguration)
        navView.setupWithNavController(navController)
        initRecyclerView()
        addDataSet()
    }

    privatefuninitRecyclerView(){
        val recycler_view = findNavController(R.id.nav_host_fragment)
        recycler_view.apply {
            var layoutManager = LinearLayoutManager(this@MainActivity)
            val topSpacingDecorator = TopSpacingItemDecoration(30)
            addItemDecoration(topSpacingDecorator)
            horizontalViewAdapter = HorizontalViewAdapter()
            recycler_view.adapter = horizontalViewAdapter
        }
    }

    privatefunaddDataSet(){
        valdata = DataSource.createDataSet()
        horizontalViewAdapter.updateData(data)
    }

    privatefunaddItemDecoration(topSpacingDecorator: TopSpacingItemDecoration) {}
}

HorizontalViewAdapter:

classHorizontalViewAdapter{

    funupdateData(data) {
        this.data = data// Notify that the data is changed
        notifyDataSetChanged()
    }

    // Everything else
}