Kotlin 中 AndroidStudio 中 GoogleMap 底部的简单 Windows

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如何解决Kotlin 中 Androidstudio 中 GoogleMap 底部的简单 Windows？

我目前正在为我的大学科目之一开发 AndroID 应用。在这一点上，我有一个带有多个标记的 GoogleMaps 地图，用于标记感兴趣的位置。那真的没有关系。每当我单击任何标记时，我都会尝试弹出一个窗口。该窗口应该填充屏幕的下三分之一并包含有关标记位置的信息。我已经在地图上添加了一个 OnMarkerClickListener，每当我按下一个标记时就会调用 onMarkerClick() 方法，但我真的不知道如何设置这样一个窗口。我知道 AndroIDstudio 有一种场景构建器，我可以用它来设计窗口，但是我如何显示它以及如何控制它在屏幕上的弹出位置？我希望有人可以帮助我。我也是 Kotlin 的新手。过去我用Java做了很多。 这是应用当前状态的链接：

@R_489_10107@s://imgur.com/00sZF7o

这是我的 MapsActivity.kt 代码：

package com.example.multimodaltraffic
import androID.Manifest
import androID.content.pm.PackageManager
import androID.os.bundle
import androID.Widget.Toast
import androIDx.appcompat.app.AppCompatActivity
import androIDx.core.app.ActivityCompat
import androIDx.core.content.ContextCompat
import com.example.multimodaltraffic.API.APIrequests
import com.example.multimodaltraffic.API.stations.NetworkJson
import com.Google.androID.gms.maps.CameraupdateFactory
import com.Google.androID.gms.maps.GoogleMap
import com.Google.androID.gms.maps.OnMapReadyCallBACk
import com.Google.androID.gms.maps.SupportMapFragment
import com.Google.androID.gms.maps.model.bitmapDescriptorFactory
import com.Google.androID.gms.maps.model.LatLng
import com.Google.androID.gms.maps.model.Marker
import com.Google.androID.gms.maps.model.MarkerOptions
import kotlinx.coroutInes.dispatchers
import kotlinx.coroutInes.GlobalScope
import kotlinx.coroutInes.launch
import kotlinx.coroutInes.withContext
import retrofit2.Retrofit
import retrofit2.awaitResponse
import retrofit2.converter.gson.GsonConverterFactory


const val BASE_URL = "@R_489_10107@s://API.citybik.es"

class MapsActivity : AppCompatActivity(),OnMapReadyCallBACk,GoogleMap.onMarkerClickListener {

    private lateinit var mMap: GoogleMap
    private val LOCATION_PERMISSION_requEST = 1

    private fun getLOCATIOnAccess() {
        if (ContextCompat.checkSelfPermission(this,androID.Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED) {
            mMap.isMyLOCATIOnEnabled = true
        }
        else
            ActivityCompat.requestPermissions(this,arrayOf(androID.Manifest.permission.ACCESS_FINE_LOCATION),LOCATION_PERMISSION_requEST)
    }


    overrIDe fun onrequestPermissionsResult(requestCode: Int,permissions: Array<String>,grantResults: IntArray) {
        if (requestCode == LOCATION_PERMISSION_requEST) {
            if (grantResults.contains(PackageManager.PERMISSION_GRANTED)) {
                if (ActivityCompat.checkSelfPermission(this,Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this,Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
                    // Todo: ConsIDer calling
                    //    ActivityCompat#requestPermissions
                    // here to request the missing permissions,and then overrIDing
                    //   public voID onrequestPermissionsResult(int requestCode,String[] permissions,//                                          int[] grantResults)
                    // to handle the case where the user grants the permission. See the documentation
                    // for ActivityCompat#requestPermissions for more details.
                    return
                }
                mMap.isMyLOCATIOnEnabled = true
            }
            else {
                Toast.makeText(this,"User has not granted LOCATIOn access permission",Toast.LENGTH_LONG).show()
                finish()
            }
        }
    }
    overrIDe fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceStatE)

        setContentVIEw(R.layout.activity_maps)
        // Obtain the SupportMapFragment and get notifIEd when the map is ready to be used.
        val mapFragment = supportFragmentManager
                .findFragmentByID(R.ID.map) as SupportMapFragment
        mapFragment.getMapAsync(this)
    }

    /**
     * Manipulates the map once available.
     * This callBACk is triggered when the map is ready to be used.
     * This is where we can add markers or lines,add Listeners or move the camera. In this case,*/
    overrIDe fun onMapReady(GoogleMap: GoogleMap) {
        mMap = GoogleMap
        getLOCATIOnAccess()
        // Placeholder for camera start position
        // @Todo change to current position
        val kassel =LatLng(51.313139,9.465458)
        mMap.moveCamera(CameraupdateFactory.newLatLngZoom(kassel,8f))
        mMap.setonMarkerClickListener(this)
        // current zoom level
        /*
        mMap.setonCameraIDleListener {
            Log.d("DEBUG",mMap.cameraposition.zoom.toString())
        }
        */

        getCurrentData()
    }

    /**
     * Get data from CityBikes API
     * First all networks,then all stations of the networks
     * Calls function to add markers on map
     * */
    private fun getCurrentData() {

        var API = Retrofit.builder()
                .baseUrl(BASE_URL)
                .addConverterFactory(GsonConverterFactory.create())
                .build()
                .create(APIrequests::class.java)

        GlobalScope.launch(dispatchers.IO) {

            try {
                val response = API.getNextbikeData().awaitResponse()
                if (response.issuccessful) {

                    var networks = response.body()!!

                    networks.networks.forEach{
                        if(it.LOCATIOn.country == "DE"){
                            GlobalScope.launch(dispatchers.IO) {
                                API = Retrofit.builder()
                                        .baseUrl(BASE_URL)
                                        .addConverterFactory(GsonConverterFactory.create())
                                        .build()
                                        .create(APIrequests::class.java)

                                val response = API.getStations(it.ID).awaitResponse()

                                if (response.issuccessful) {

                                    var network = response.body()!!
                                    setStationMarker(network)
                                }
                            }
                        }
                    }

                }
            } catch (e: Exception) {
                withContext(dispatchers.Main){
                    Toast.makeText(
                            applicationContext,"Nextbike networks Could not be loaded.",Toast.LENGTH_SHORT
                    ).show()
                }
            }
        }
    }

    // Add marker for each Nextbike station
    private fun setStationMarker(network: NetworkJson){
        // @Todo Safe marker to update informations

        network.network.stations.forEach{

            val station = LatLng(it.latitude,it.longitudE)
            this@mapsActivity.runOnUiThread(Runnable {
                if (it.freeBikes > 0) {
                    mMap.addMarker(MarkerOptions()
                            .position(station)
                            .title(it.Name)
                            .snippet("Free bikes: " + it.freeBikes)
                            .icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_GREEN))
                    )

                } else {
                    mMap.addMarker(MarkerOptions()
                            .position(station)
                            .title(it.Name)
                            .snippet("Free bikes: " + it.freeBikes)
                    )
                }
            })


        }
    }

    overrIDe fun onMarkerClick(p0: Marker?): Boolean {
        if (p0 != null) {
            p0.setIcon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_BLUE))
        }
        return true;

    }
}

这是我的 maps_activity.xml 的代码：

<?xml version="1.0" enCoding="utf-8"?>
<fragment xmlns:androID="@R_489_10107@://scheR_301_11845@as.androID.com/apk/res/androID"
    xmlns:map="@R_489_10107@://scheR_301_11845@as.androID.com/apk/res-auto"
    xmlns:tools="@R_489_10107@://scheR_301_11845@as.androID.com/tools"
    androID:ID="@+ID/map"
    androID:name="com.Google.androID.gms.maps.SupportMapFragment"
    androID:layout_wIDth="match_parent"
    androID:layout_height="match_parent"
    tools:context=".MapsActivity" />

解决方法

class BottomDialogFragment : Fragment()
class BottomDialogFragment : BottomSheetDialogFragment()

class BottomDialogFragment : BottomSheetDialogFragment() {

    companion object {
        val TAG : String = BottomDialogFragment::class.java.simplename
    }

    override fun onCreateView(
        inflater: LayoutInflater,container: ViewGroup?,savedInstanceState: Bundle?
    ): View {
        return inflater.inflate(R.layout.bottom_dialog_fragment,container,falsE)
    }

    override fun onActivityCreated(savedInstanceState: Bundle?) {
        super.onActivityCreated(savedInstanceStatE)

        //do whatever you want in here 
        //e.g: Handle Button Click etc

    }

}

override fun onMarkerClick(p0: Marker?): Boolean {
        if (p0 != null) {
          p0.setIcon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_BLUE))
          //call it like this
          BottomDialogFragment.newInstance().apply {
              show(supportFragmentManager,BottomDialogFragment.TAG)
          }
        }
        return true;

    }

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