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Code Quality Rank: L5
Programming language: Java
License: Apache License 2.0
Tags: Maps    
Latest version: v1.6.0

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README

Map Scale View

Download Android Arsenal

Scale view for any Android Maps SDK (not only Google Maps)

[Image](images/image_rtl.png)

Contributing

I encourage you to participate in this project. Feel free to open issues with bugs or ideas, fork and send pull requests.
Check list of "help wanted" issues to start with.

Usage

dependencies {
    implementation 'com.github.pengrad:mapscaleview:1.6.0'
}

Include in layout file over map

<FrameLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <fragment
        android:id="@+id/mapFragment"
        class="com.google.android.gms.maps.SupportMapFragment"
        android:layout_width="match_parent"
        android:layout_height="match_parent"/>

    <com.github.pengrad.mapscaleview.MapScaleView
        android:id="@+id/scaleView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom|end"
        android:layout_margin="4dp"/>
</FrameLayout>

With miles or custom style

<com.github.pengrad.mapscaleview.MapScaleView
        android:id="@+id/scaleView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom|end"
        android:layout_margin="4dp"
        app:scale_maxWidth="100dp"
        app:scale_color="#009"
        app:scale_miles="true"
        app:scale_outline="true"
        app:scale_strokeWidth="3dp"
        app:scale_textSize="20sp"
        app:scale_expandRtl="true"/>

Update on map changed

val scaleView: MapScaleView = findViewById(R.id.scaleView)
val cameraPosition = map.cameraPosition
// need to pass zoom and latitude
scaleView.update(cameraPosition.zoom, cameraPosition.target.latitude)

Full example with subscribing to map events and updating scale view

override fun onMapReady(googleMap: GoogleMap) {
    map = googleMap
    googleMap.setOnCameraMoveListener(this)
    googleMap.setOnCameraIdleListener(this)
}

override fun onCameraMove() {
    val cameraPosition = map.cameraPosition
    scaleView.update(cameraPosition.zoom, cameraPosition.target.latitude)
}

override fun onCameraIdle() {
    val cameraPosition = map.cameraPosition
    scaleView.update(cameraPosition.zoom, cameraPosition.target.latitude)
}

Refer to the sample project on how to use scale view with other Android Maps SDK (Mapbox).

Customization

mapScaleView.setColor(@ColorInt int color)
mapScaleView.setTextSize(float textSize)
mapScaleView.setStrokeWidth(float strokeWidth)
mapScaleView.setTextFont(Typeface font)

// enable/disable white outline, enabled by default
mapScaleView.setOutlineEnabled(false)

mapScaleView.metersAndMiles() // default
mapScaleView.metersOnly()
mapScaleView.milesOnly()

// expand scale bar from right to left, disabled by default
mapScaleView.setExpandRtlEnabled(true)