package com.mapbox.mapboxandroiddemo.examples.styles;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import com.mapbox.geojson.Feature;
import com.mapbox.geojson.FeatureCollection;
import com.mapbox.geojson.Point;
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.SymbolLayer;
import com.mapbox.mapboxsdk.style.sources.GeoJsonSource;
import java.util.ArrayList;
import java.util.List;
import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.iconAllowOverlap;
import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.iconIgnorePlacement;
import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.iconImage;
/**
* Display {@link SymbolLayer} icons on the map.
*/
public class BasicSymbolLayerActivity extends AppCompatActivity implements
OnMapReadyCallback {
private static final String SOURCE_ID = "SOURCE_ID";
private static final String ICON_ID = "ICON_ID";
private static final String LAYER_ID = "LAYER_ID";
private MapView mapView;
@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_basic_symbol_layer);
mapView = findViewById(R.id.mapView);
mapView.onCreate(savedInstanceState);
mapView.getMapAsync(this);
}
@Override
public void onMapReady(@NonNull final MapboxMap mapboxMap) {
List<Feature> symbolLayerIconFeatureList = new ArrayList<>();
symbolLayerIconFeatureList.add(Feature.fromGeometry(
Point.fromLngLat(-57.225365, -33.213144)));
symbolLayerIconFeatureList.add(Feature.fromGeometry(
Point.fromLngLat(-54.14164, -33.981818)));
symbolLayerIconFeatureList.add(Feature.fromGeometry(
Point.fromLngLat(-56.990533, -30.583266)));
mapboxMap.setStyle(new Style.Builder().fromUri("mapbox://styles/mapbox/cjf4m44iw0uza2spb3q0a7s41")
// Add the SymbolLayer icon image to the map style
.withImage(ICON_ID, BitmapFactory.decodeResource(
BasicSymbolLayerActivity.this.getResources(), R.drawable.mapbox_marker_icon_default))
// Adding a GeoJson source for the SymbolLayer icons.
.withSource(new GeoJsonSource(SOURCE_ID,
FeatureCollection.fromFeatures(symbolLayerIconFeatureList)))
// Adding the actual SymbolLayer to the map style. An offset is added that the bottom of the red
// marker icon gets fixed to the coordinate, rather than the middle of the icon being fixed to
// the coordinate point. This is offset is not always needed and is dependent on the image
// that you use for the SymbolLayer icon.
.withLayer(new SymbolLayer(LAYER_ID, SOURCE_ID)
.withProperties(
iconImage(ICON_ID),
iconAllowOverlap(true),
iconIgnorePlacement(true)
)
), new Style.OnStyleLoaded() {
@Override
public void onStyleLoaded(@NonNull Style style) {
// Map is set up and the style has loaded. Now you can add additional data or make other map adjustments.
}
});
}
@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);
}
}
@Override
public void onMapReady(@NonNull final MapboxMap mapboxMap) {
mapboxMap.setStyle(Style.DARK, new Style.OnStyleLoaded() {
@Override
public void onStyleLoaded(@NonNull Style style) {
// Set up a SymbolManager instance
symbolManager = new SymbolManager(mapView, mapboxMap, style);
symbolManager.setIconAllowOverlap(true);
symbolManager.setTextAllowOverlap(true);
// Add symbol at specified lat/lon
symbol = symbolManager.create(new SymbolOptions()
.withLatLng(new LatLng(60.169091, 24.939876))
.withIconImage(MAKI_ICON_HARBOR)
.withIconSize(2.0f)
.withDraggable(true));
}
}
2条答案
按热度按时间kninwzqo1#
因此,本文档可以帮助您,因为在本文档中,它说这些是需要添加的代码行,我还将包括到该文档的链接,他们在github上也有一个演示项目,所以我建议您试用该演示并查看源代码,这样您会有更好的想法
我建议您尝试一下这些代码,哪怕只是一个例子,看看它是否可以工作
basicsymbollayeractivity.java基本符号
egmofgnx2#
注解插件“简化了设置和调整mapboxMap上注解的视觉属性的方法”,而不推荐使用标记:
https://docs.mapbox.com/android/plugins/guides/annotation/
为了让它工作,您必须在build.gradle中添加这个额外的依赖项
加载Map后,可以创建符号管理器并添加标记:
另请参见此示例:https://docs.mapbox.com/android/plugins/examples/symbol-listener/