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Add animated weather data

Additional Developer Resources
Load a raster image to a style using ImageSource and display it on a map as animated weather data using RasterLayer.
Android Examples App Available

This example code is part of the Maps SDK for Android Examples App, a working Android project available on GitHub. Android developers are encouraged to run the examples app locally to interact with this example in an emulator and explore other features of the Maps SDK.

See our Run the Maps SDK for Android Examples App tutorial for step-by-step instructions.

AnimatedImageSourceActivity.kt
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package com.mapbox.maps.compose.testapp.examples.style

import android.os.Bundle
import androidx.activity.ComponentActivity
import androidx.activity.compose.setContent
import androidx.compose.foundation.layout.fillMaxSize
import androidx.compose.ui.Modifier
import androidx.compose.ui.graphics.ImageBitmap
import androidx.compose.ui.graphics.asAndroidBitmap
import androidx.compose.ui.res.imageResource
import com.mapbox.geojson.Point
import com.mapbox.maps.compose.testapp.ExampleScaffold
import com.mapbox.maps.compose.testapp.R
import com.mapbox.maps.compose.testapp.ui.theme.MapboxMapComposeTheme
import com.mapbox.maps.extension.compose.MapEffect
import com.mapbox.maps.extension.compose.MapboxMap
import com.mapbox.maps.extension.compose.animation.viewport.rememberMapViewportState
import com.mapbox.maps.extension.compose.style.PointListValue
import com.mapbox.maps.extension.compose.style.layers.generated.RasterLayer
import com.mapbox.maps.extension.compose.style.sources.generated.rememberImageSourceState
import com.mapbox.maps.extension.style.sources.generated.ImageSource
import com.mapbox.maps.extension.style.sources.getSourceAs
import com.mapbox.maps.extension.style.sources.updateImage
import kotlinx.coroutines.delay

/**
 * Load a raster image to a style using ImageSource and display it on a map as
 * animated weather data using RasterLayer.
 */
public class AnimatedImageSourceActivity : ComponentActivity() {

  override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)

    setContent {
      MapboxMapComposeTheme {
        ExampleScaffold {
          MapboxMap(
            Modifier.fillMaxSize(),
            mapViewportState = rememberMapViewportState {
              setCameraOptions {
                center(Point.fromLngLat(-76.1255491524373, 43.043493218594804))
                zoom(6.0)
              }
            }
          ) {
            val bitmaps = listOf(
              ImageBitmap.imageResource(R.drawable.southeast_radar_0).asAndroidBitmap(),
              ImageBitmap.imageResource(R.drawable.southeast_radar_1).asAndroidBitmap(),
              ImageBitmap.imageResource(R.drawable.southeast_radar_2).asAndroidBitmap(),
              ImageBitmap.imageResource(R.drawable.southeast_radar_3).asAndroidBitmap(),
            )
            MapEffect(Unit) {
              val imageSource: ImageSource = it.mapboxMap.getSourceAs(ID_IMAGE_SOURCE)!!
              var index = 0
              while (true) {
                imageSource.updateImage(bitmaps[index])
                delay(1000)
                index = (index + 1) % 4
              }
            }
            RasterLayer(
              sourceState = rememberImageSourceState(sourceId = ID_IMAGE_SOURCE) {
                coordinates = PointListValue(
                  Point.fromLngLat(-80.425, 46.437),
                  Point.fromLngLat(-71.516, 46.437),
                  Point.fromLngLat(-71.516, 37.936),
                  Point.fromLngLat(-80.425, 37.936)
                )
              }
            )
          }
        }
      }
    }
  }

  private companion object {
    private const val ID_IMAGE_SOURCE = "image_source-id"
  }
}
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