Map Scale View
Scale view for any Android Maps SDK (not only Google Maps)
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_color="#009"
app:scale_miles="true"
app:scale_strokeWidth="3dp"
app:scale_textSize="20sp"/>Update on map changed
MapScaleView scaleView = (MapScaleView) findViewById(R.id.scaleView);
CameraPosition cameraPosition = map.getCameraPosition();
// 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 public void onMapReady(GoogleMap googleMap) {
map = googleMap;
googleMap.setOnCameraMoveListener(this);
googleMap.setOnCameraIdleListener(this);
googleMap.setOnCameraChangeListener(this);
}
@Override public void onCameraMove() {
CameraPosition cameraPosition = map.getCameraPosition();
scaleView.update(cameraPosition.zoom, cameraPosition.target.latitude);
}
@Override public void onCameraIdle() {
CameraPosition cameraPosition = map.getCameraPosition();
scaleView.update(cameraPosition.zoom, cameraPosition.target.latitude);
}
@Override public void onCameraChange(CameraPosition cameraPosition) {
scaleView.update(cameraPosition.zoom, cameraPosition.target.latitude);
}
Download
dependencies {
compile 'com.github.pengrad:mapscaleview:1.2.1'
}