android - 在另一个活动中显示连接到一个活动的现有导航菜单

问题描述

我正在构建一个应用程序并在我的第一个活动中有一个导航菜单，但是，当我进入第二个活动时它没有显示，所以我应该从我的第一个活动中复制哪些代码用于导航菜单也显示在那里？

我试图将我认为是相关代码的部分从第一个活动复制到第二个活动中，但是第二个活动崩溃了，所以我尝试删除添加的代码但未能反转它，所以我将代码从备份导入到让它再次工作。

class MainActivity : AppCompatActivity(), NavigationView.OnNavigationItemSelectedListener {


override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_main)
    val toolbar: Toolbar = findViewById(R.id.toolbar)
    setSupportActionBar(toolbar)

    val fab: FloatingActionButton = findViewById(R.id.fab)
    fab.setOnClickListener { view ->
        val intent = Intent(this, Main2Activity::class.java)
        val sharedPref = this?.getPreferences(Context.MODE_PRIVATE)
        val mystr = sharedPref.getInt(getString(R.string.STR), 0)
        intent.putExtra("data", mystr)
        startActivity(intent)
    }
    val drawerLayout: DrawerLayout = findViewById(R.id.drawer_layout)
    val navView: NavigationView = findViewById(R.id.nav_view)
    val toggle = ActionBarDrawerToggle(
        this, drawerLayout, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close
    )
    drawerLayout.addDrawerListener(toggle)
    toggle.syncState()

    navView.setNavigationItemSelectedListener(this)

    //val db = FirebaseFirestore.getInstance()
}

override fun onBackPressed() {
    val drawerLayout: DrawerLayout = findViewById(R.id.drawer_layout)
    if (drawerLayout.isDrawerOpen(GravityCompat.START)) {
        drawerLayout.closeDrawer(GravityCompat.START)
    } else {
        super.onBackPressed()
    }
}

override fun onCreateOptionsMenu(menu: Menu): Boolean {
    // Inflate the menu; this adds items to the action bar if it is present.
    menuInflater.inflate(R.menu.main, menu)
    return true
}

override fun onOptionsItemSelected(item: MenuItem): Boolean {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    return when (item.itemId) {
        R.id.action_settings -> true
        else -> super.onOptionsItemSelected(item)
    }
}

override fun onNavigationItemSelected(item: MenuItem): Boolean {
    // Handle navigation view item clicks here.
    when (item.itemId) {
        R.id.nav_home -> {
            // Handle the camera action
            val i = Intent(Intent.ACTION_VIEW, Uri.parse("https://www.facebook.com/brobostigon/"))
            startActivity(i)
        }
        R.id.nav_gallery -> {
            val intent = Intent(this, MainActivity::class.java)
            startActivity(intent)
        }
        R.id.nav_slideshow -> {
            val intent = Intent(this, Main2Activity::class.java)
            startActivity(intent)
        }
        R.id.nav_tools -> {

        }
        R.id.nav_share -> {
            val i = Intent(Intent.ACTION_VIEW, Uri.parse("http://taylorworld.me.uk/privacy-policy.html"))
            startActivity(i)
        }
        R.id.nav_send -> {

        }
    }
    val drawerLayout: DrawerLayout = findViewById(R.id.drawer_layout)
    drawerLayout.closeDrawer(GravityCompat.START)
    return true
}

这是我的第二个活动

class Main2Activity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main2)
        //val mystr: Int = intent.getIntExtra("data", 0)
        //editText8.setText(Integer.toString(mystr))
    }

标签： androidandroid-activitykotlinandroid-navigationview

android - 在另一个活动中显示连接到一个活动的现有导航菜单

问题描述

解决方案

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