Add Polyline Annotations
There are several ways to add markers, annotations, and other shapes to the map using the Maps SDK. To choose the appropriate approach for your application, read the Markers and annotations guide.
PolylineAnnotationActivity.kt
package com.mapbox.maps.compose.testapp.examples.annotation
import android.os.Bundle
import android.widget.Toast
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.Color
import com.mapbox.geojson.Point
import com.mapbox.maps.compose.testapp.ExampleScaffold
import com.mapbox.maps.compose.testapp.examples.utils.AnnotationUtils
import com.mapbox.maps.compose.testapp.examples.utils.CityLocations
import com.mapbox.maps.compose.testapp.ui.theme.MapboxMapComposeTheme
import com.mapbox.maps.extension.compose.MapboxMap
import com.mapbox.maps.extension.compose.animation.viewport.rememberMapViewportState
import com.mapbox.maps.extension.compose.annotation.generated.PolylineAnnotation
import com.mapbox.maps.extension.compose.annotation.generated.PolylineAnnotationGroup
import com.mapbox.maps.extension.compose.annotation.generated.withLineColor
import com.mapbox.maps.plugin.annotation.AnnotationConfig
import com.mapbox.maps.plugin.annotation.generated.PolylineAnnotationOptions
import java.util.Random
/**
* Example to showcase usage of PolylineAnnotation with Jetpack Compose.
*/
public class PolylineAnnotationActivity : ComponentActivity() {
private val random = Random()
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContent {
MapboxMapComposeTheme {
ExampleScaffold {
val mapViewportState = rememberMapViewportState {
setCameraOptions {
center(CityLocations.NULLISLAND)
zoom(3.0)
pitch(0.0)
bearing(0.0)
}
}
MapboxMap(
Modifier.fillMaxSize(),
mapViewportState = mapViewportState
) {
PolylineAnnotation(
points = POLYLINE_POINTS,
onClick = {
Toast.makeText(
this@PolylineAnnotationActivity,
"Clicked on Polygon Annotation: $it",
Toast.LENGTH_SHORT
).show()
true
}
) {
lineColor = Color.Red
lineWidth = 5.0
}
PolylineAnnotationGroup(
annotations = mutableListOf<PolylineAnnotationOptions>().apply {
repeat(100) {
add(
PolylineAnnotationOptions()
.withPoints(AnnotationUtils.createRandomPoints())
.withLineColor(
Color(
random.nextInt(256),
random.nextInt(256),
random.nextInt(256),
)
)
)
}
},
annotationConfig = AnnotationConfig(
PITCH_OUTLINE, LAYER_ID, SOURCE_ID
)
)
}
}
}
}
}
private companion object {
val POLYLINE_POINTS = listOf(
Point.fromLngLat(-4.375974, -2.178992),
Point.fromLngLat(-7.639772, -4.107888),
Point.fromLngLat(-11.439207, 2.798737),
)
private const val LAYER_ID = "line_layer"
private const val SOURCE_ID = "line_source"
private const val PITCH_OUTLINE = "pitch-outline"
}
}
この{Type}は役に立ちましたか？