48 lines
1.9 KiB
Kotlin
48 lines
1.9 KiB
Kotlin
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package com.example.myapplication
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import android.os.Bundle
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import android.view.View
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import androidx.appcompat.app.AppCompatActivity
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import androidx.navigation.fragment.NavHostFragment
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import androidx.navigation.ui.setupWithNavController
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import com.google.android.material.bottomnavigation.BottomNavigationView
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import androidx.navigation.NavController
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import androidx.navigation.NavDestination
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class MainActivity : AppCompatActivity() {
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private lateinit var bottomNav: BottomNavigationView
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private lateinit var navController: NavController
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override fun onCreate(savedInstanceState: Bundle?) {
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super.onCreate(savedInstanceState)
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setContentView(R.layout.activity_main)
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// 1. 找到 NavHostFragment
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val navHostFragment =
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supportFragmentManager.findFragmentById(R.id.nav_host_fragment) as NavHostFragment
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navController = navHostFragment.navController
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// 2. 找到 BottomNavigationView
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bottomNav = findViewById(R.id.bottom_nav)
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// 3. 绑定导航控制器（负责切换 Fragment、保持选中状态）
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bottomNav.setupWithNavController(navController)
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// 4. 取消图标颜色 tint —— 使用原图标颜色
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bottomNav.itemIconTintList = null
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// 5. 添加导航监听（用于某些 Fragment 隐藏底部导航栏）
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navController.addOnDestinationChangedListener { _, destination, _ ->
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when (destination.id) {
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R.id.rechargeFragment, R.id.goldCoinRechargeFragment,R.id.PersonalSettings,R.id.MySkin,R.id.searchFragment,R.id.MyKeyboard,R.id.searchResultFragment,R.id.keyboardDetailFragment,R.id.feedbackFragment,R.id.notificationFragment-> {
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bottomNav.visibility = View.GONE
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}
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else -> {
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bottomNav.visibility = View.VISIBLE
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}
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}
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}
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}
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}
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