Change the position of a view using Navigation View

package com.mapbox.navigation.examples.preview.dropinui
 
import android.os.Bundle
import android.view.ViewGroup
import androidx.appcompat.app.AppCompatActivity
import androidx.core.view.updateLayoutParams
import com.mapbox.navigation.core.MapboxNavigation
import com.mapbox.navigation.core.internal.extensions.flowLocationMatcherResult
import com.mapbox.navigation.core.lifecycle.MapboxNavigationObserver
import com.mapbox.navigation.dropin.EmptyBinder
import com.mapbox.navigation.examples.preview.R
import com.mapbox.navigation.examples.preview.databinding.MapboxActivitySpeedLimitRepositionBinding
import com.mapbox.navigation.examples.preview.databinding.MapboxCustomSpeedLimitViewBinding
import com.mapbox.navigation.ui.base.lifecycle.UIBinder
import com.mapbox.navigation.ui.base.lifecycle.UIComponent
import com.mapbox.navigation.ui.speedlimit.api.MapboxSpeedLimitApi
import com.mapbox.navigation.ui.speedlimit.model.SpeedLimitFormatter
import com.mapbox.navigation.ui.speedlimit.view.MapboxSpeedLimitView
import kotlinx.coroutines.launch
 
/**
* The example demonstrates how to use reposition speed limit view to the bottom of the screen.
*
* Before running the example make sure you have put your access_token in the correct place
* inside [app-preview/src/main/res/values/mapbox_access_token.xml]. If not present then add
* this file at the location mentioned above and add the following content to it
*
* <?xml version="1.0" encoding="utf-8"?>
* <resources xmlns:tools="http://schemas.android.com/tools">
*     <string name="mapbox_access_token"><PUT_YOUR_ACCESS_TOKEN_HERE></string>
* </resources>
*
* The example uses replay location engine to facilitate navigation without physically moving.
*
* How to use the example:
* - Start the example
* - Grant the location permissions if not already granted
* - You will see the speed limit view positioned at the bottom left of the screen
*/
class RepositionSpeedLimitActivity : AppCompatActivity() {
 
private lateinit var binding: MapboxActivitySpeedLimitRepositionBinding
private lateinit var speedLimitBinding: MapboxCustomSpeedLimitViewBinding
 
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
binding = MapboxActivitySpeedLimitRepositionBinding.inflate(layoutInflater)
speedLimitBinding = MapboxCustomSpeedLimitViewBinding.inflate(layoutInflater)
setContentView(binding.root)
 
binding.navigationView.api.routeReplayEnabled(true)
 
binding.navigationView.customizeViewBinders {
// The line of code hides the speed limit view on top left
speedLimitBinder = EmptyBinder()
// The line of code adds a custom speed limit view to empty LeftFrameBinder
leftFrameBinder = CustomSpeedLimitBinder(speedLimitBinding.root)
}
}
}
 
/**
* Custom speed limit view binder
*/
class CustomSpeedLimitBinder(private val view: ViewGroup) : UIBinder {
override fun bind(viewGroup: ViewGroup): MapboxNavigationObserver {
// The empty left frame binder's height is wrap_content by default.
// This line of code makes the height change to match_parent. Followed by that
// the speed limit view can be positioned at the bottom of the parent.
viewGroup.updateLayoutParams { height = 0 }
viewGroup.addView(view)
return CustomSpeedLimitComponent(view.findViewById(R.id.speedLimitView))
}
}
 
/**
* Custom speed limit component
*/
class CustomSpeedLimitComponent(
private val speedLimitView: MapboxSpeedLimitView,
private val speedLimitApi: MapboxSpeedLimitApi = MapboxSpeedLimitApi(
SpeedLimitFormatter(speedLimitView.context)
)
) : UIComponent() {
override fun onAttached(mapboxNavigation: MapboxNavigation) {
super.onAttached(mapboxNavigation)
// setTextAppearance is not deprecated in AppCompatTextView
speedLimitView.setTextAppearance(
speedLimitView.context,
R.style.DropInSpeedLimitTextAppearance
)
 
coroutineScope.launch {
mapboxNavigation.flowLocationMatcherResult().collect {
val value = speedLimitApi.updateSpeedLimit(it.speedLimit)
speedLimitView.render(value)
}
}
}
}