如何在不点击导航栏的情况下使用BottomNavigation导航

// 假设你已经设置了BottomNavigationView和相应的Fragment
val bottomNavigationView = findViewById<BottomNavigationView>(R.id.bottom_navigation)

// 设置一个监听器来处理导航项的选择
bottomNavigationView.setOnNavigationItemSelectedListener { item ->
    when (item.itemId) {
        R.id.navigation_home -> {
            // 切换到Home Fragment
            switchFragment(HomeFragment())
            true
        }
        R.id.navigation_dashboard -> {
            // 切换到Dashboard Fragment
            switchFragment(DashboardFragment())
            true
        }
        R.id.navigation_notifications -> {
            // 切换到Notifications Fragment
            switchFragment(NotificationsFragment())
            true
        }
        else -> false
    }
}

// 用于切换Fragment的辅助函数
fun switchFragment(fragment: Fragment) {
    supportFragmentManager.beginTransaction()
        .replace(R.id.fragment_container, fragment)
        .commit()
}

// 程序化导航示例：在某些条件下自动切换到Dashboard
fun navigateToDashboardAutomatically() {
    bottomNavigationView.selectedItemId = R.id.navigation_dashboard
}

fun switchFragment(fragment: Fragment) {
    supportFragmentManager.beginTransaction()
        .replace(R.id.fragment_container, fragment)
        .commit()
    bottomNavigationView.invalidate() // 强制刷新BottomNavigation
}