I'm using the navigation drawer which uses the nav_header.xml (inside menu folder) as the top.
I'm trying to to change a textview text inside of it, this is the code:
toolbar = findViewById(R.id.toolbar)
setSupportActionBar(toolbar)
drawerLayout = findViewById(R.id.drawer_layout)
navView = findViewById(R.id.nav_view)
val toggle = ActionBarDrawerToggle(
this, drawerLayout, toolbar, 0, 0
)
drawerLayout.addDrawerListener(toggle)
toggle.syncState()
navView.setNavigationItemSelectedListener(this)
val nickname = "testttt"
MenuNickname.text = nickname
The error is:
MenuNickname must not be null
How am I suppose to do this?