0 个错误的崩溃项目 (AS)

Question

问题的本质：在MainActivity中添加了一段代码后，应用程序崩溃了，没有显示错误，可能是某些元素相互冲突。 扩展代码： ipadd = (TextView)findViewById(R.id.ipadd); WifiManager wifiManager = (WifiManager) getApplicationContext().getSystemService(WIFI_SERVICE); ipadd.setText(Formatter.formatIpAddress(wifiManager.getConnectionInfo().getIpAddress())); ipadd = (TextView)findViewById(R.id.ipadd); WifiManager wifiManager = (WifiManager) getApplicationContext().getSystemService(WIFI_SERVICE); ipadd.setText(Formatter.formatIpAddress(wifiManager.getConnectionInfo().getIpAddress())); 主要代码：

package com.bruh.vpn
import android.os.Bundle
import android.view.Menu
import com.google.android.material.snackbar.Snackbar
import com.google.android.material.navigation.NavigationView
import androidx.navigation.findNavController
import androidx.navigation.ui.AppBarConfiguration
import androidx.navigation.ui.navigateUp
import androidx.navigation.ui.setupActionBarWithNavController
import androidx.navigation.ui.setupWithNavController
import androidx.drawerlayout.widget.DrawerLayout
import androidx.appcompat.app.AppCompatActivity
import com.bruh.vpn.databinding.ActivityMainBinding
class MainActivity : AppCompatActivity() {
    private lateinit var appBarConfiguration: AppBarConfiguration
    private lateinit var binding: ActivityMainBinding
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        binding = ActivityMainBinding.inflate(layoutInflater)
        setContentView(binding.root)
        setSupportActionBar(binding.appBarMain.toolbar)
        binding.appBarMain.fab.setOnClickListener { view ->
            Snackbar.make(view, "Ping - *ms", Snackbar.LENGTH_LONG)
                .setAction("Action", null).show()
        }
        val drawerLayout: DrawerLayout = binding.drawerLayout
        val navView: NavigationView = binding.navView
        val navController = findNavController(R.id.nav_host_fragment_content_main)
        appBarConfiguration = AppBarConfiguration(
            setOf(
                R.id.nav_home, R.id.nav_gallery, R.id.nav_slideshow
            ), drawerLayout
        )
        setupActionBarWithNavController(navController, appBarConfiguration)
        navView.setupWithNavController(navController)
    }
    override fun onCreateOptionsMenu(menu: Menu): Boolean {

        menuInflater.inflate(R.menu.main, menu)
        return true
    }
    override fun onSupportNavigateUp(): Boolean {
        val navController = findNavController(R.id.nav_host_fragment_content_main)
        return navController.navigateUp(appBarConfiguration) || super.onSupportNavigateUp()

    }
}