Adding Custom Layout for Google Map Marker using CustomInfo Kotlin Example

In this tutorial We will learn how to add Custom Marker Items in Google Map Android.

We will follow below steps:

1. Design Custom XML Layout file for Google Map Marker.
2. Create Google Map Info Window Adapter Class.
3. Info Window Data Class (Kotlin) which will be holding location info to be displayed on our custom Google Map Marker.
4. Adding Marker Options from Activity/Fragment and displaying custom marker.

Google Map Custom InfoWindowAdapter Example Output

This is how our marker layout will look like. We will be showing following location details in Marker Options.

1. Location Name.
2. Location Address.
3. Location Email Address.
4. Location Phone Number.
5. Location Opening Hours.
6. Location Branch Code.

XML Layout File For Custom Marker

// layout_custom_map_marker.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_margin="16dp"
    android:paddingEnd="16dp"
    android:paddingLeft="16dp"
    android:paddingRight="16dp"
    android:paddingStart="16dp"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toStartOf="parent">

    <ImageView
        android:id="@+id/imgCancelMapMarker"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:visibility="gone"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:srcCompat="@drawable/ic_mew_cancel_red" />

    <com.es.mewphone.widgets.BoldText
        android:id="@+id/txtLocMarkerName"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Developine Software"
        android:textColor="@color/colorTextdefault"
        android:textSize="10sp"
        app:layout_constraintStart_toStartOf="parent" />

    <com.es.mewphone.widgets.NormalText
        android:id="@+id/txtLocMarkerAddress"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_marginTop="6dp"
        android:text="Software Technology Park Islamabad"
        android:textSize="10sp"
        app:layout_constraintEnd_toStartOf="@id/imgCancelMapMarker"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/txtLocMarkerName" />

    <ImageView
        android:id="@+id/imgLocMarkerEmail"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="6dp"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/txtLocMarkerAddress"
        app:srcCompat="@drawable/ic_mew_emailorage" />

    <com.es.mewphone.widgets.NormalText
        android:id="@+id/txtLocMarkerEmail"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="6dp"
        android:layout_marginStart="6dp"
        android:layout_marginTop="6dp"
        android:text="developine.com@gmail.com"
        android:textSize="10sp"
        app:layout_constraintStart_toEndOf="@id/imgLocMarkerEmail"
        app:layout_constraintTop_toBottomOf="@id/txtLocMarkerAddress" />

    <ImageView
        android:id="@+id/imgLocMarkerPhone"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="6dp"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/txtLocMarkerEmail"
        app:srcCompat="@drawable/ic_mew_phoneorange" />

    <com.es.mewphone.widgets.NormalText
        android:id="@+id/txtLocMarkerPhone"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="6dp"
        android:layout_marginStart="6dp"
        android:layout_marginTop="6dp"
        android:text="92 333 8456598"
        android:textSize="10sp"
        app:layout_constraintStart_toEndOf="@id/imgLocMarkerPhone"
        app:layout_constraintTop_toBottomOf="@+id/txtLocMarkerEmail" />

    <com.es.mewphone.widgets.BoldText
        android:id="@+id/txtOpenningHoursLabel"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="6dp"
        android:text="@string/openning_hours"
        android:textColor="@color/colorTextdefault"
        android:textSize="10sp"
        app:layout_constraintTop_toBottomOf="@+id/txtLocMarkerPhone" />

    <com.es.mewphone.widgets.NormalText
        android:id="@+id/txtOpenningHoursValue"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="6dp"
        android:text="8 AM to 6 PM"
        android:textSize="10sp"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/txtOpenningHoursLabel" />

    <com.es.mewphone.widgets.BoldText
        android:id="@+id/txtBranchMarkerLabel"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="6dp"
        android:text="@string/branch_code"
        android:textColor="@color/colorTextdefault"
        android:textSize="10sp"
        app:layout_constraintTop_toBottomOf="@+id/txtOpenningHoursValue" />

    <com.es.mewphone.widgets.NormalText
        android:id="@+id/txtBranchMarkerValue"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="6dp"
        android:text="0404"
        android:textSize="10sp"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/txtBranchMarkerLabel" />

</android.support.constraint.ConstraintLayout>

Preview of this XML layout file is shown above in screenshot.

Create Info Window Data Class

data class InfoWindowData(val mLocatioName: String,
                          val mLocationAddres: String,
                          val mLocationEmail: String,
                          val mLocationPhone: String,
                          val mLocationHours: String,
                          val mLocationBranch: String)

This data class will be holding data for each marker layout.

Create Custom Info Window Adapter Class (Kotlin Code)

class CustomInfoWindowGoogleMap(val context: Context) : GoogleMap.InfoWindowAdapter {

    override fun getInfoContents(p0: Marker?): View {

        var mInfoView = (context as Activity).layoutInflater.inflate(R.layout.mew_custom_map_marker, null)
        var mInfoWindow: InfoWindowData? = p0?.tag as InfoWindowData?

        mInfoView.txtLocMarkerName.text = mInfoWindow?.mLocatioName
        mInfoView.txtLocMarkerAddress.text = mInfoWindow?.mLocationAddres
        mInfoView.txtLocMarkerEmail.text = mInfoWindow?.mLocationEmail
        mInfoView.txtLocMarkerPhone.text = mInfoWindow?.mLocationPhone
        mInfoView.txtOpenningHoursValue.text = mInfoWindow?.mLocationHours
        mInfoView.txtBranchMarkerValue.text = mInfoWindow?.mLocationBranch

        return mInfoView
    }

    override fun getInfoWindow(p0: Marker?): View? {
        return null
    }
}

Activity Class (Kotlin)

class GoogleMapInfoWindowActivity : AppCompatActivity(), OnMapReadyCallback {

    private var mMap: GoogleMap? = null

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.fragment_home)

        val mapFragment = supportFragmentManager
                .findFragmentById(R.id.map) as SupportMapFragment
        mapFragment.getMapAsync(this)
    }


    override fun onMapReady(googleMap: GoogleMap) {
        mMap = googleMap

        mMap!!.uiSettings.isZoomControlsEnabled = true
        mMap!!.setMinZoomPreference(11f)

        val islamabad = LatLng(33.738045, 73.084488)

        val markerOptions = MarkerOptions()
        markerOptions.position(islamabad)
                .title("Location Details")
                .snippet("I am custom Location Marker.")
                .icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_BLUE))

        val info = InfoWindowData("Developine", "Islamabad Pakistan",
                "hammadtariq.me@gmail.com",
                "92 333 8456598",
                "8 AM to 6 PM",
                "0404"
        )


        val customInfoWindow = CustomInfoWindowGoogleMap(this)

        mMap!!.setInfoWindowAdapter(customInfoWindow)

        val marker = mMap!!.addMarker(markerOptions)
        marker.tag = info
        marker.showInfoWindow()

        mMap!!.moveCamera(CameraUpdateFactory.newLatLng(islamabad))
    }
}

If you run this code custom marker layout will be showing by default on marker.

If you want to disable it

just remove this code line

 marker.showInfoWindow()

But when you will click on Marker it will show Location Details inside custom layout (popup).

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