IOT>> android-maps-utils>> 返回
项目作者： googlemaps

项目描述 ：
Maps SDK for Android Utility Library
高级语言： Java
项目地址: git://github.com/googlemaps/android-maps-utils.git
创建时间： 2013-05-17T00:08:48Z
项目社区：https://github.com/googlemaps/android-maps-utils
开源协议：Apache License 2.0
下载


Maven Central
Release
Stable
Tests/Build

Contributors
License
StackOverflow
Discord

Maps SDK for Android Utility Library

Description

This open-source library contains utilities that are useful for a wide
range of applications using the Google Maps SDK for Android.

  • Marker animation - animates a marker from one position to another
  • Marker clustering — handles the display of a large number of points
  • Marker icons — display text on your Markers
  • Heatmaps — display a large number of points as a heat map
  • Import KML — displays KML data on the map
  • Import GeoJSON — displays and styles GeoJSON data on the map
  • Polyline encoding and decoding — compact encoding for paths,
    interoperability with Maps API web services
  • Spherical geometry — for example: computeDistance, computeHeading,
    computeArea
  • Street View metadata — checks if a Street View panorama exists at a given location

You can also find Kotlin extensions for this library in Maps Android KTX.

Requirements

Installation

  1. dependencies {
  2.     // Utilities for Maps SDK for Android (requires Google Play Services)
  3.     // You do not need to add a separate dependency for the Maps SDK for Android
  4.     // since this library builds in the compatible version of the Maps SDK.
  5.     implementation 'com.google.maps.android:android-maps-utils:3.11.2'
  7.     // Optionally add the Kotlin Extensions (KTX) for full Kotlin language support
  8.     // See latest version at https://github.com/googlemaps/android-maps-ktx
  9.     // implementation 'com.google.maps.android:maps-utils-ktx:<latest-version>'
  10. }

Sample App

This repository includes a sample app that illustrates the use of this library.

To run the demo app, ensure you’ve met the requirements above then:

  1. Clone the repository
  2. Add a file local.properties in the root project (this file should NOT be under version control to protect your API key)
  3. Add a single line to local.properties that looks like MAPS_API_KEY=YOUR_API_KEY, where YOUR_API_KEY is the API key you obtained earlier
  4. Build and run the debug variant for the Maps SDK for Android version

Documentation

See the documentation for a full list of classes and their methods.

Full guides for using the utilities are published in
Google Maps Platform documentation.

Usage

Marker utilities

Marker utilities


Data visualization utilities

### Data visualization utilities

- Display heat maps source, guide
- Import GeoJSON source, guide
- Import KML source, guide


Polyline and spherical geometry utilities

### Additional utilities

- Polyline encoding and decoding source, encoding sample, decoding sample
- Spherical geometry source, compute distance sample


Street View metadata utility

### Street View metadata utility

The StreetViewUtil class provides functionality to check whether a location is supported in StreetView. You can avoid errors when adding a Street View panorama to an Android app by calling this metadata utility and only adding a Street View panorama if the response is OK.

kotlin StreetViewUtils.fetchStreetViewData(LatLng(8.1425918, 11.5386121), BuildConfig.MAPS_API_KEY,Source.DEFAULT)

fetchStreetViewData will return NOT_FOUND, OK, ZERO_RESULTS or REQUEST_DENIED, depending on the response.

By default, the Source is set to Source.DEFAULT, but you can also specify Source.OUTDOOR to request outdoor Street View panoramas.


Migration Guide from v0.x to 1.0

### Migrating from v0.x to 1.0

Improvements made in version 1.0.0 of the library to support multiple layers on the map caused breaking changes to versions prior to it. These changes also modify behaviors that are documented in the Maps SDK for Android Maps documentation site. This section outlines all those changes and how you can migrate to use this library since version 1.0.0.


### Adding Click Events

Click events originate in the layer-specific object that added the marker/ground overlay/polyline/polygon. In each layer, the click handlers are passed to the marker, ground overlay, polyline, or polygon Collection object.

java // Clustering ClusterManager<ClusterItem> clusterManager = // Initialize ClusterManager - if you're using multiple maps features, use the constructor that passes in Manager objects (see next section) clusterManager.setOnClusterItemClickListener(item -> { // Listen for clicks on a cluster item here return false; }); clusterManager.setOnClusterClickListener(item -> { // Listen for clicks on a cluster here return false; }); // GeoJson GeoJsonLayer geoJsonLayer = // Initialize GeoJsonLayer - if you're using multiple maps features, use the constructor that passes in Manager objects (see next section) geoJsonLayer.setOnFeatureClickListener(feature -> { // Listen for clicks on GeoJson features here }); // KML KmlLayer kmlLayer = // Initialize KmlLayer - if you're using multiple maps features, use the constructor that passes in Manager objects (see next section) kmlLayer.setOnFeatureClickListener(feature -> { // Listen for clicks on KML features here });

#### Using Manager Objects

If you use one of Manager objects in the package com.google.maps.android (e.g. GroundOverlayManager, MarkerManager, etc.), say from adding a KML layer, GeoJson layer, or Clustering, you will have to rely on the Collection specific to add an object to the map rather than adding that object directly to GoogleMap. This is because each Manager sets itself as a click listener so that it can manage click events coming from multiple layers.

For example, if you have additional GroundOverlay objects:

New

java GroundOverlayManager groundOverlayManager = // Initialize // Create a new collection first GroundOverlayManager.Collection groundOverlayCollection = groundOverlayManager.newCollection(); // Add a new ground overlay GroundOverlayOptions options = // ... groundOverlayCollection.addGroundOverlay(options);

Old

java GroundOverlayOptions options = // ... googleMap.addGroundOverlay(options);

This same pattern applies for Marker, Circle, Polyline, and Polygon.

### Adding a Custom Info Window
If you use MarkerManager, adding an InfoWindowAdapter and/or an OnInfoWindowClickListener should be done on the MarkerManager.Collection object.

New
java CustomInfoWindowAdapter adapter = // ... OnInfoWindowClickListener listener = // ... // Create a new Collection from a MarkerManager MarkerManager markerManager = // ... MarkerManager.Collection collection = markerManager.newCollection(); // Set InfoWindowAdapter and OnInfoWindowClickListener collection.setInfoWindowAdapter(adapter); collection.setOnInfoWindowClickListener(listener); // Alternatively, if you are using clustering ClusterManager<ClusterItem> clusterManager = // ... MarkerManager.Collection markerCollection = clusterManager.getMarkerCollection(); markerCollection.setInfoWindowAdapter(adapter); markerCollection.setOnInfoWindowClickListener(listener);

Old
java CustomInfoWindowAdapter adapter = // ... OnInfoWindowClickListener listener = // ... googleMap.setInfoWindowAdapter(adapter); googleMap.setOnInfoWindowClickListener(listener);

### Adding a Marker Drag Listener

If you use MarkerManager, adding an OnMarkerDragListener should be done on the MarkerManager.Collection object.

New
java // Create a new Collection from a MarkerManager MarkerManager markerManager = // ... MarkerManager.Collection collection = markerManager.newCollection(); // Add markers to collection MarkerOptions markerOptions = // ... collection.addMarker(markerOptions); // ... // Set OnMarkerDragListener GoogleMap.OnMarkerDragListener listener = // ... collection.setOnMarkerDragListener(listener); // Alternatively, if you are using clustering ClusterManager<ClusterItem> clusterManager = // ... MarkerManager.Collection markerCollection = clusterManager.getMarkerCollection(); markerCollection.setOnMarkerDragListener(listener);

Old
java // Add markers MarkerOptions markerOptions = // ... googleMap.addMarker(makerOptions); // Add listener GoogleMap.OnMarkerDragListener listener = // ... googleMap.setOnMarkerDragListener(listener);

### Clustering

A bug was fixed in v1 to properly clear and re-add markers via the ClusterManager.

For example, this didn’t work pre-v1, but works for v1 and later:

java clusterManager.clearItems(); clusterManager.addItems(items); clusterManager.cluster();

If you’re using custom clustering (i.e, if you’re extending DefaultClusterRenderer), you must override two additional methods in v1:
onClusterItemUpdated() - should be the same as your onBeforeClusterItemRendered() method
onClusterUpdated() - should be the same as your onBeforeClusterRendered() method

Note that these methods can’t be identical, as you need to use a Marker instead of MarkerOptions*

See the CustomMarkerClusteringDemoActivity in the demo app for a complete example.

New

```java
private class PersonRenderer extends DefaultClusterRenderer {
…
@Override
protected void onBeforeClusterItemRendered(Person person, MarkerOptions markerOptions) {
// Draw a single person - show their profile photo and set the info window to show their name
markerOptions
.icon(getItemIcon(person))
.title(person.name);
}

/
New in v1 /
@Override
protected void onClusterItemUpdated(Person person, Marker marker) {
// Same implementation as onBeforeClusterItemRendered() (to update cached markers)
marker.setIcon(getItemIcon(person));
marker.setTitle(person.name);
}

@Override
protected void onBeforeClusterRendered(Cluster cluster, MarkerOptions markerOptions) {
// Draw multiple people.
// Note: this method runs on the UI thread. Don’t spend too much time in here (like in this example).
markerOptions.icon(getClusterIcon(cluster));
}

/* New in v1
*/
@Override
protected void onClusterUpdated(Cluster cluster, Marker marker) {
// Same implementation as onBeforeClusterRendered() (to update cached markers)
marker.setIcon(getClusterIcon(cluster));
}
…
}
_Old_java
private class PersonRenderer extends DefaultClusterRenderer {
…
@Override
protected void onBeforeClusterItemRendered(Person person, MarkerOptions markerOptions) {
// Draw a single person - show their profile photo and set the info window to show their name
markerOptions
.icon(getItemIcon(person))
.title(person.name);
}

@Override
protected void onBeforeClusterRendered(Cluster cluster, MarkerOptions markerOptions) {
// Draw multiple people.
// Note: this method runs on the UI thread. Don’t spend too much time in here (like in this example).
markerOptions.icon(getClusterIcon(cluster));
}
…
}
```

Contributing

Contributions are welcome and encouraged! If you’d like to contribute, send us a pull request and refer to our code of conduct and contributing guide.

Terms of Service

This library uses Google Maps Platform services. Use of Google Maps Platform services through this library is subject to the Google Maps Platform Terms of Service.

This library is not a Google Maps Platform Core Service. Therefore, the Google Maps Platform Terms of Service (e.g. Technical Support Services, Service Level Agreements, and Deprecation Policy) do not apply to the code in this library.

Support

This library is offered via an open source license. It is not governed by the Google Maps Platform Support [Technical Support Services Guidelines, the SLA, or the Deprecation Policy. However, any Google Maps Platform services used by the library remain subject to the Google Maps Platform Terms of Service.

This library adheres to semantic versioning to indicate when backwards-incompatible changes are introduced. Accordingly, while the library is in version 0.x, backwards-incompatible changes may be introduced at any time.

If you find a bug, or have a feature request, please file an issue on GitHub. If you would like to get answers to technical questions from other Google Maps Platform developers, ask through one of our developer community channels. If you’d like to contribute, please check the contributing guide.

You can also discuss this library on our Discord server.