Android使用百度地图API绘制实时路线
时间: 2023-11-10 10:00:52 浏览: 90
Android 百度地图API源码.rar
要在Android应用程序中使用百度地图API绘制实时路线,您需要执行以下步骤:
1. 在百度地图开放平台上注册开发者帐户,创建应用程序并获取API密钥。
2. 在应用程序的build.gradle文件中添加以下依赖项:
```
dependencies {
implementation 'com.baidu.android:mapapi:5.0.0'
}
```
3. 在布局文件中添加MapView:
```
<com.baidu.mapapi.map.MapView
android:id="@+id/bmapView"
android:layout_width="match_parent"
android:layout_height="match_parent" />
```
4. 在Activity中初始化MapView和BaiduMap:
```
public class MainActivity extends AppCompatActivity {
private MapView mMapView;
private BaiduMap mBaiduMap;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mMapView = findViewById(R.id.bmapView);
mBaiduMap = mMapView.getMap();
}
}
```
5. 使用LocationManager获取设备的实时位置,并在地图上绘制路线:
```
public class MainActivity extends AppCompatActivity {
private MapView mMapView;
private BaiduMap mBaiduMap;
private LocationManager mLocationManager;
private Polyline mPolyline;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mMapView = findViewById(R.id.bmapView);
mBaiduMap = mMapView.getMap();
mLocationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
}
@Override
protected void onResume() {
super.onResume();
if (mLocationManager != null) {
mLocationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 5000, 10, mLocationListener);
}
}
@Override
protected void onPause() {
super.onPause();
if (mLocationManager != null) {
mLocationManager.removeUpdates(mLocationListener);
}
}
private final LocationListener mLocationListener = new LocationListener() {
@Override
public void onLocationChanged(Location location) {
LatLng latLng = new LatLng(location.getLatitude(), location.getLongitude());
if (mPolyline == null) {
List<LatLng> points = new ArrayList<>();
points.add(latLng);
PolylineOptions polylineOptions = new PolylineOptions().points(points).color(Color.BLUE).width(5);
mPolyline = (Polyline) mBaiduMap.addOverlay(polylineOptions);
} else {
List<LatLng> points = mPolyline.getPoints();
points.add(latLng);
mPolyline.setPoints(points);
}
MapStatus mapStatus = new MapStatus.Builder().target(latLng).zoom(18).build();
mBaiduMap.animateMapStatus(MapStatusUpdateFactory.newMapStatus(mapStatus));
}
};
}
```
这样,您的应用程序就可以在地图上绘制实时路线了。请注意,此示例仅使用GPS提供程序跟踪位置。如果您需要更好的精度和可靠性,请考虑使用其他位置提供程序。
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