# Change a layer's color

> **Note (legacy): A newer version of the Maps SDK is available**
> 
> This page uses v9.7.1 of the Mapbox Maps SDK. A newer version of the SDK is available. Learn about the latest version, v11.29.0, in the [Maps SDK documentation](https://docs.mapbox.com/android/maps/guides/).

Your browser doesn't support HTML5 video. Open [link to the video](https://docs.mapbox.com/android/android/assets/medias/maps-example-color-switcher-activity-c792004af7dcb18a42263df96b96a41e.mp4).

> **Note**
> 
> This example is a part of the [Mapbox Android Demo app](https://github.com/mapbox/mapbox-android-demo). You can find the values for all referenced resources in the [`res`](https://github.com/mapbox/mapbox-android-demo/tree/master/MapboxAndroidDemo/src/main/res) directory. For example, see [`res/values/activity_strings.xml`](https://github.com/mapbox/mapbox-android-demo/tree/master/MapboxAndroidDemo/src/main/res/values/activity_strings.xml) for `R.string.*` references used in this example. The dependencies can be found [here.](https://github.com/mapbox/mapbox-navigation-android-examples/blob/main/app/build.gradle) The examples use View binding. [See setup documention if necessary.](https://developer.android.com/topic/libraries/view-binding)

Title: `activity_style_color_switcher`

[View on GitHub](https://github.com/mapbox/mapbox-android-demo/tree/master/MapboxAndroidDemo/src/main/res/layout/activity_style_color_switcher.xml)

```xml
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:mapbox="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".examples.styles.ColorSwitcherActivity">


    <com.mapbox.mapboxsdk.maps.MapView
        android:id="@+id/mapView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        mapbox:mapbox_cameraTargetLat="45.4385"
        mapbox:mapbox_cameraTargetLng="12.338"
        mapbox:mapbox_cameraZoom="17.4"/>

    <LinearLayout
        android:id="@+id/color_picker_content"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom"
        android:background="#ffffff"
        android:orientation="vertical"
        android:paddingBottom="10dp"
        android:paddingEnd="24dp"
        android:paddingLeft="24dp"
        android:paddingRight="24dp"
        android:paddingStart="24dp"
        android:paddingTop="24dp">

        <Spinner
            android:id="@+id/spinner_layer_picker"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:entries="@array/layer_spinner_array"/>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="Red"/>

            <SeekBar
                android:id="@+id/red_seek_bar"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:max="255"
                android:progress="202"/>

        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="Green"/>

            <SeekBar
                android:id="@+id/green_seek_bar"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:max="255"
                android:progress="210"/>

        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="Blue"/>

            <SeekBar
                android:id="@+id/blue_seek_bar"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:max="255"
                android:progress="211"/>

        </LinearLayout>
    </LinearLayout>


</FrameLayout>
```

**Java**

Title: `ColorSwitcherActivity.java`

[View on GitHub](https://github.com/mapbox/mapbox-android-demo/tree/master/MapboxAndroidDemo/src/main/java/com/mapbox/mapboxandroiddemo/examples/styles/ColorSwitcherActivity.java)

```java
package com.mapbox.mapboxandroiddemo.examples.styles;

import android.graphics.Color;
import android.os.Bundle;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import android.view.View;
import android.widget.AdapterView;
import android.widget.SeekBar;
import android.widget.Spinner;

import com.mapbox.mapboxandroiddemo.R;
import com.mapbox.mapboxsdk.Mapbox;
import com.mapbox.mapboxsdk.maps.MapView;
import com.mapbox.mapboxsdk.maps.MapboxMap;
import com.mapbox.mapboxsdk.maps.OnMapReadyCallback;
import com.mapbox.mapboxsdk.maps.Style;
import com.mapbox.mapboxsdk.style.layers.FillLayer;

import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.fillColor;

/**
 * Using setPaintProperty to change a layer's fill color.
 */
public class ColorSwitcherActivity extends AppCompatActivity {

  private MapView mapView;
  FillLayer water;
  FillLayer building;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    // Mapbox access token is configured here. This needs to be called either in your application
    // object or in the same activity which contains the mapview.
    Mapbox.getInstance(this, getString(R.string.access_token));

    // This contains the MapView in XML and needs to be called after the access token is configured.
    setContentView(R.layout.activity_style_color_switcher);

    final SeekBar redSeekBar = findViewById(R.id.red_seek_bar);
    final SeekBar greenSeekBar =  findViewById(R.id.green_seek_bar);
    final SeekBar blueSeekBar = findViewById(R.id.blue_seek_bar);

    final Spinner layerPicker = findViewById(R.id.spinner_layer_picker);

    layerPicker.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
      @Override
      public void onItemSelected(AdapterView<?> adapterView, View view, int position, long id) {
        if (layerPicker.getSelectedItem().toString().equals("Building")) {

          if (building != null) {
            redSeekBar.setProgress(Color.red(building.getFillColorAsInt()));
            greenSeekBar.setProgress(Color.green(building.getFillColorAsInt()));
            blueSeekBar.setProgress(Color.blue(building.getFillColorAsInt()));

          }

        } else if (layerPicker.getSelectedItem().toString().equals("Water")) {

          if (water != null) {
            redSeekBar.setProgress(Color.red(water.getFillColorAsInt()));
            greenSeekBar.setProgress(Color.green(water.getFillColorAsInt()));
            blueSeekBar.setProgress(Color.blue(water.getFillColorAsInt()));
          }
        }
      }

      @Override
      public void onNothingSelected(AdapterView<?> adapterView) {

      }
    });

    redSeekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
      @Override
      public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
        if (water != null && layerPicker.getSelectedItem().equals("Water") && fromUser) {
          water.setProperties(
            fillColor(Color.rgb(progress, greenSeekBar.getProgress(), blueSeekBar.getProgress()))
          );
        } else if (building != null && layerPicker.getSelectedItem().equals("Building") && fromUser) {
          building.setProperties(
            fillColor(Color.rgb(progress, greenSeekBar.getProgress(), blueSeekBar.getProgress()))
          );
        }
      }

      @Override
      public void onStartTrackingTouch(SeekBar seekBar) {

      }

      @Override
      public void onStopTrackingTouch(SeekBar seekBar) {

      }
    });

    greenSeekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
      @Override
      public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
        if (water != null && layerPicker.getSelectedItem().equals("Water") && fromUser) {
          water.setProperties(
            fillColor(Color.rgb(redSeekBar.getProgress(), progress, blueSeekBar.getProgress()))
          );
        } else if (building != null && layerPicker.getSelectedItem().equals("Building") && fromUser) {
          building.setProperties(
            fillColor(Color.rgb(progress, greenSeekBar.getProgress(), blueSeekBar.getProgress()))
          );
        }
      }

      @Override
      public void onStartTrackingTouch(SeekBar seekBar) {

      }

      @Override
      public void onStopTrackingTouch(SeekBar seekBar) {

      }
    });

    blueSeekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
      @Override
      public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
        if (water != null && layerPicker.getSelectedItem().equals("Water") && fromUser) {
          water.setProperties(
            fillColor(Color.rgb(redSeekBar.getProgress(), greenSeekBar.getProgress(), progress))
          );
        } else if (building != null && layerPicker.getSelectedItem().equals("Building") && fromUser) {
          building.setProperties(
            fillColor(Color.rgb(progress, greenSeekBar.getProgress(), blueSeekBar.getProgress()))
          );
        }
      }

      @Override
      public void onStartTrackingTouch(SeekBar seekBar) {

      }

      @Override
      public void onStopTrackingTouch(SeekBar seekBar) {

      }
    });

    mapView = findViewById(R.id.mapView);
    mapView.onCreate(savedInstanceState);
    mapView.getMapAsync(new OnMapReadyCallback() {
      @Override
      public void onMapReady(@NonNull MapboxMap mapboxMap) {
        mapboxMap.setStyle(Style.LIGHT, new Style.OnStyleLoaded() {
          @Override
          public void onStyleLoaded(@NonNull Style style) {
            water = (FillLayer) style.getLayer("water");
            building = (FillLayer) style.getLayer("building");
          }
        });
      }
    });
  }

  @Override
  public void onResume() {
    super.onResume();
    mapView.onResume();
  }

  @Override
  protected void onStart() {
    super.onStart();
    mapView.onStart();
  }

  @Override
  protected void onStop() {
    super.onStop();
    mapView.onStop();
  }

  @Override
  public void onPause() {
    super.onPause();
    mapView.onPause();
  }

  @Override
  public void onLowMemory() {
    super.onLowMemory();
    mapView.onLowMemory();
  }

  @Override
  protected void onDestroy() {
    super.onDestroy();
    mapView.onDestroy();
  }

  @Override
  protected void onSaveInstanceState(Bundle outState) {
    super.onSaveInstanceState(outState);
    mapView.onSaveInstanceState(outState);
  }
}
```