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Custom bottom navigation view in kotlin
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import android.annotation.SuppressLint | |
import android.os.Bundle | |
import android.util.Log | |
import android.view.LayoutInflater | |
import android.view.Menu | |
import android.view.View | |
import android.widget.ImageView | |
import android.widget.TextView | |
import androidx.activity.viewModels | |
import androidx.core.content.ContextCompat | |
import androidx.databinding.DataBindingUtil | |
import androidx.fragment.app.viewModels | |
import androidx.navigation.NavController | |
import androidx.navigation.findNavController | |
import androidx.navigation.ui.onNavDestinationSelected | |
import androidx.navigation.ui.setupWithNavController | |
import com.google.android.material.bottomnavigation.BottomNavigationItemView | |
import com.google.android.material.bottomnavigation.BottomNavigationMenuView | |
import com.google.android.material.bottomnavigation.BottomNavigationView | |
import dagger.hilt.android.AndroidEntryPoint | |
@AndroidEntryPoint | |
class DashboardActivity : CommonActivity() { | |
private lateinit var binding: ActivityDashboardBinding | |
var navController: NavController? = null | |
val viewModel: DashboardViewModel by viewModels() | |
private var bottomNavigationItem:ArrayList<Pair<MenuItemData,BottomNavigationItemView>> = arrayListOf() | |
@SuppressLint("RestrictedApi") | |
override fun onCreate(savedInstanceState: Bundle?) { | |
super.onCreate(savedInstanceState) | |
binding = ActivityDashboardBinding.inflate(layoutInflater) | |
setContentView(binding.root) | |
val navView: BottomNavigationView = binding.navView | |
navController = findNavController(R.id.nav_host_fragment_activity_dashboard) | |
navController?.let { | |
navView.setupWithNavController(it) | |
} | |
viewModel.menuItems.forEachIndexed { index, menuItem -> | |
val item = navView.menu.add(Menu.NONE, menuItem.destinationId, index, menuItem.label) | |
item.isChecked = index == 0 | |
} | |
addViewsToBottomNavigationView(navView) | |
} | |
@SuppressLint("RestrictedApi") | |
fun addViewsToBottomNavigationView(navView: BottomNavigationView) { | |
val bottomNavigationMenuView: BottomNavigationMenuView = | |
navView.getChildAt(0) as BottomNavigationMenuView | |
navView.setOnItemSelectedListener { menuItem -> | |
setNavigationUpdateItem(menuItem.title.toString()) | |
navController?.let { | |
menuItem.onNavDestinationSelected(it) | |
} | |
true | |
} | |
for ((i, data) in viewModel.menuItems.withIndex()) { | |
val view: View = bottomNavigationMenuView.getChildAt(i) | |
val layoutInflater = LayoutInflater.from(this) | |
val binding: BottomNavigationItemBinding = DataBindingUtil.inflate( | |
layoutInflater, R.layout.bottom_navigation_item, bottomNavigationMenuView, false | |
) | |
val itemView = view as BottomNavigationItemView | |
itemView.addView(binding.root) | |
updateNavigationItem(binding.root,data,data.isSelected) | |
bottomNavigationItem.add(Pair(data,itemView)) | |
} | |
} | |
private fun setNavigationUpdateItem(label: String) { | |
Log.e("checkCallItem"," label : $label") | |
bottomNavigationItem.forEach { | |
if(it.first.label==label){ | |
updateNavigationItem(it.second,it.first,true) | |
}else{ | |
updateNavigationItem(it.second,it.first,false) | |
} | |
} | |
} | |
private fun updateNavigationItem(view:View, data:MenuItemData, isSelected:Boolean){ | |
val tvItemText: TextView = view.findViewById(R.id.tvItemText) | |
val ivItem: ImageView = view.findViewById(R.id.ivItem) | |
tvItemText.text = data.label | |
if (isSelected) { | |
ivItem.setImageResource(data.selectedImage) | |
tvItemText.setTextColor( | |
ContextCompat.getColor( | |
this@DashboardActivity, | |
R.color.lightTextPrimary | |
) | |
) | |
} else { | |
tvItemText.setTextColor( | |
ContextCompat.getColor( | |
this@DashboardActivity, | |
R.color.switchColor | |
) | |
) | |
ivItem.setImageResource(data.unSelectImage) | |
} | |
} | |
override fun getLayoutResourceId(): Int { | |
return 0 | |
} | |
} |
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<com.google.android.material.bottomnavigation.BottomNavigationView | |
android:id="@+id/nav_view" | |
android:layout_width="0dp" | |
android:layout_height="wrap_content" | |
android:background="@drawable/bg_corner_8dp_2023" | |
android:outlineSpotShadowColor="@color/transparent" | |
android:outlineAmbientShadowColor="@color/transparent" | |
app:itemHorizontalTranslationEnabled="false" | |
app:labelVisibilityMode="unlabeled" | |
app:itemActiveIndicatorStyle="@null" | |
app:itemBackground="@android:color/transparent" | |
style="@style/CustomBottomNavigationStyle" | |
app:layout_constraintBottom_toBottomOf="parent" | |
app:layout_constraintLeft_toLeftOf="parent" | |
app:layout_constraintRight_toRightOf="parent"/> |
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