在官方文档中没有给出获取角度的方法,这里使用了安卓自带的传感器获取指南针角度
首先定义传感器和角度:
private SensorManager mSensorManager;
double degree = 0;
在oncreate方法中初始化传感器
//指南针 mSensorManager= (SensorManager) getSystemService(Context.SENSOR_SERVICE); Sensor magenticSensor=mSensorManager.getDefaultSensor(Sensor.TYPE_MAGNETIC_FIELD); Sensor accelerometerSensor=mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER); mSensorManager.registerListener(listener,magenticSensor,SensorManager.SENSOR_DELAY_GAME); mSensorManager.registerListener(listener,accelerometerSensor,SensorManager.SENSOR_DELAY_GAME);
定义listener
//指南针 获取degree值 private SensorEventListener listener=new SensorEventListener() { float[] accelerometerValues=new float[3]; float[] magenticValues=new float[3]; @Override public void onSensorChanged(SensorEvent sensorEvent) { //判断当前是加速度传感器还是地磁传感器 if(sensorEvent.sensor.getType()==Sensor.TYPE_ACCELEROMETER){ accelerometerValues=sensorEvent.values.clone(); }else if(sensorEvent.sensor.getType()== Sensor.TYPE_MAGNETIC_FIELD){ magenticValues=sensorEvent.values.clone(); } float[] R=new float[9]; float[] values=new float[3]; SensorManager.getRotationMatrix(R, null, accelerometerValues, magenticValues); SensorManager.getOrientation(R,values); Log.d("MainActivity","value[0] is"+Math.toDegrees(values[0])); degree = Math.toDegrees(values[0]); } @Override public void onAccuracyChanged(Sensor sensor, int i) { } };
最后将该值传给sdk中提供的指南针方法作为参数:
MyLocationData locData = new MyLocationData.Builder() .accuracy(location.getRadius()) // 此处设置开发者获取到的方向信息,顺时针0-360 .direction((float)degree).latitude(location.getLatitude()) .longitude(location.getLongitude()).build();
完整代码:
import android.Manifest; import android.app.Activity; import android.content.Context; import android.content.pm.PackageManager; import android.hardware.Sensor; import android.hardware.SensorEvent; import android.hardware.SensorEventListener; import android.hardware.SensorManager; import android.os.Build; import android.os.Bundle; import android.support.v4.app.ActivityCompat; import android.support.v4.content.ContextCompat; import android.util.Log; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.CompoundButton; import android.widget.ImageView; import android.widget.RadioGroup.OnCheckedChangeListener; import android.widget.Toast; import android.widget.ToggleButton; import android.widget.ZoomControls; import com.baidu.location.BDLocation; import com.baidu.location.BDLocationListener; import com.baidu.location.LocationClient; import com.baidu.location.LocationClientOption; import com.baidu.mapapi.SDKInitializer; import com.baidu.mapapi.map.BaiduMap; import com.baidu.mapapi.map.BitmapDescriptor; import com.baidu.mapapi.map.MapStatusUpdate; import com.baidu.mapapi.map.MapStatusUpdateFactory; import com.baidu.mapapi.map.MapView; import com.baidu.mapapi.map.MyLocationConfiguration; import com.baidu.mapapi.map.MyLocationConfiguration.LocationMode; import com.baidu.mapapi.map.MyLocationData; import com.baidu.mapapi.model.LatLng; /** * 此demo用来展示如何结合定位SDK实现定位,并使用MyLocationOverlay绘制定位位置 同时展示如何使用自定义图标绘制并点击时弹出泡泡 * */ public class LocationDemo extends Activity { // 定位相关 LocationClient mLocClient; public MyLocationListenner myListener = new MyLocationListenner(); private LocationMode mCurrentMode; BitmapDescriptor mCurrentMarker; MapView mMapView; BaiduMap mBaiduMap; private SensorManager mSensorManager; double degree = 0; // UI相关 OnCheckedChangeListener radioButtonListener; Button requestLocButton; ToggleButton togglebtn = null; boolean isFirstLoc = true;// 是否首次定位 @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); SDKInitializer.initialize(getApplicationContext()); setContentView(R.layout.activity_location); judgePermission(); requestLocButton = (Button) findViewById(R.id.button1); mCurrentMode = LocationMode.NORMAL; requestLocButton.setText("普通"); OnClickListener btnClickListener = new OnClickListener() { public void onClick(View v) { switch (mCurrentMode) { case NORMAL: requestLocButton.setText("跟随"); mCurrentMode = LocationMode.FOLLOWING; mBaiduMap .setMyLocationConfigeration(new MyLocationConfiguration( mCurrentMode, true, mCurrentMarker)); break; case COMPASS: requestLocButton.setText("普通"); mCurrentMode = LocationMode.NORMAL; mBaiduMap .setMyLocationConfigeration(new MyLocationConfiguration( mCurrentMode, true, mCurrentMarker)); break; case FOLLOWING: requestLocButton.setText("罗盘"); mCurrentMode = LocationMode.COMPASS; mBaiduMap .setMyLocationConfigeration(new MyLocationConfiguration( mCurrentMode, true, mCurrentMarker)); break; } } }; requestLocButton.setOnClickListener(btnClickListener); togglebtn = (ToggleButton) findViewById(R.id.togglebutton); togglebtn .setOnCheckedChangeListener(new android.widget.CompoundButton.OnCheckedChangeListener() { @Override public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { if (isChecked) { // 普通地图 mBaiduMap.setMapType(BaiduMap.MAP_TYPE_SATELLITE); } else { // 卫星地图 mBaiduMap.setMapType(BaiduMap.MAP_TYPE_NORMAL); } } }); // 地图初始化 mMapView = (MapView) findViewById(R.id.bmapView); mBaiduMap = mMapView.getMap(); // 开启定位图层 mBaiduMap.setMyLocationEnabled(true); // 定位初始化 mLocClient = new LocationClient(this); mLocClient.registerLocationListener(myListener); LocationClientOption option = new LocationClientOption(); option.setOpenGps(true);// 打开gps option.setCoorType("bd09ll"); // 设置坐标类型 option.setScanSpan(1000);// 设置发起定位请求的间隔时间为1000ms option.setIsNeedAddress(true); mLocClient.setLocOption(option); mLocClient.start(); // 隐藏logo View child = mMapView.getChildAt(1); if (child != null && (child instanceof ImageView || child instanceof ZoomControls)){ child.setVisibility(View.INVISIBLE); } //指南针 mSensorManager= (SensorManager) getSystemService(Context.SENSOR_SERVICE); Sensor magenticSensor=mSensorManager.getDefaultSensor(Sensor.TYPE_MAGNETIC_FIELD); Sensor accelerometerSensor=mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER); mSensorManager.registerListener(listener,magenticSensor,SensorManager.SENSOR_DELAY_GAME); mSensorManager.registerListener(listener,accelerometerSensor,SensorManager.SENSOR_DELAY_GAME); } //指南针 获取degree值 private SensorEventListener listener=new SensorEventListener() { float[] accelerometerValues=new float[3]; float[] magenticValues=new float[3]; @Override public void onSensorChanged(SensorEvent sensorEvent) { //判断当前是加速度传感器还是地磁传感器 if(sensorEvent.sensor.getType()==Sensor.TYPE_ACCELEROMETER){ accelerometerValues=sensorEvent.values.clone(); }else if(sensorEvent.sensor.getType()== Sensor.TYPE_MAGNETIC_FIELD){ magenticValues=sensorEvent.values.clone(); } float[] R=new float[9]; float[] values=new float[3]; SensorManager.getRotationMatrix(R, null, accelerometerValues, magenticValues); SensorManager.getOrientation(R,values); Log.d("MainActivity","value[0] is"+Math.toDegrees(values[0])); degree = Math.toDegrees(values[0]); } @Override public void onAccuracyChanged(Sensor sensor, int i) { } }; /** * 定位SDK监听函数 */ public class MyLocationListenner implements BDLocationListener { @Override public void onReceiveLocation(BDLocation location) { // map view 销毁后不在处理新接收的位置 if (location == null || mMapView == null) return; MyLocationData locData = new MyLocationData.Builder() .accuracy(location.getRadius()) // 此处设置开发者获取到的方向信息,顺时针0-360 .direction((float)degree).latitude(location.getLatitude()) .longitude(location.getLongitude()).build(); mBaiduMap.setMyLocationData(locData); if (isFirstLoc) { isFirstLoc = false; LatLng ll = new LatLng(location.getLatitude(), location.getLongitude()); // MapStatusUpdate u = MapStatusUpdateFactory.newLatLng(ll); // 设置缩放比例,更新地图状态 float f = mBaiduMap.getMaxZoomLevel();// 19.0 MapStatusUpdate u = MapStatusUpdateFactory.newLatLngZoom(ll, f - 2); mBaiduMap.animateMapStatus(u); //地图位置显示 Toast.makeText(LocationDemo.this, location.getAddrStr(), Toast.LENGTH_SHORT).show(); } } public void onReceivePoi(BDLocation poiLocation) { } } @Override protected void onPause() { mMapView.onPause(); super.onPause(); } @Override protected void onResume() { mMapView.onResume(); super.onResume(); } @Override protected void onDestroy() { // 退出时销毁定位 mLocClient.stop(); // 关闭定位图层 mBaiduMap.setMyLocationEnabled(false); mMapView.onDestroy(); mMapView = null; if(mSensorManager!=null){ mSensorManager.unregisterListener(listener); } super.onDestroy(); } //6.0之后要动态获取权限,重要!!! protected void judgePermission() { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { // 检查该权限是否已经获取 // 权限是否已经 授权 GRANTED---授权 DINIED---拒绝 // sd卡权限 String[] SdCardPermission = {Manifest.permission.WRITE_EXTERNAL_STORAGE}; if (ContextCompat.checkSelfPermission(this, SdCardPermission[0]) != PackageManager.PERMISSION_GRANTED) { // 如果没有授予该权限,就去提示用户请求 ActivityCompat.requestPermissions(this, SdCardPermission, 100); } //手机状态权限 String[] readPhoneStatePermission = {Manifest.permission.READ_PHONE_STATE}; if (ContextCompat.checkSelfPermission(this, readPhoneStatePermission[0]) != PackageManager.PERMISSION_GRANTED) { // 如果没有授予该权限,就去提示用户请求 ActivityCompat.requestPermissions(this, readPhoneStatePermission, 200); } //定位权限 String[] locationPermission = {Manifest.permission.ACCESS_FINE_LOCATION}; if (ContextCompat.checkSelfPermission(this, locationPermission[0]) != PackageManager.PERMISSION_GRANTED) { // 如果没有授予该权限,就去提示用户请求 ActivityCompat.requestPermissions(this, locationPermission, 300); } String[] ACCESS_COARSE_LOCATION = {Manifest.permission.ACCESS_COARSE_LOCATION}; if (ContextCompat.checkSelfPermission(this, ACCESS_COARSE_LOCATION[0]) != PackageManager.PERMISSION_GRANTED) { // 如果没有授予该权限,就去提示用户请求 ActivityCompat.requestPermissions(this, ACCESS_COARSE_LOCATION, 400); } String[] READ_EXTERNAL_STORAGE = {Manifest.permission.READ_EXTERNAL_STORAGE}; if (ContextCompat.checkSelfPermission(this, READ_EXTERNAL_STORAGE[0]) != PackageManager.PERMISSION_GRANTED) { // 如果没有授予该权限,就去提示用户请求 ActivityCompat.requestPermissions(this, READ_EXTERNAL_STORAGE, 500); } String[] WRITE_EXTERNAL_STORAGE = {Manifest.permission.WRITE_EXTERNAL_STORAGE}; if (ContextCompat.checkSelfPermission(this, WRITE_EXTERNAL_STORAGE[0]) != PackageManager.PERMISSION_GRANTED) { // 如果没有授予该权限,就去提示用户请求 ActivityCompat.requestPermissions(this, WRITE_EXTERNAL_STORAGE, 600); } }else{ //doSdCardResult(); } //LocationClient.reStart(); } }