利用方向传感判断机头方向传值给定位
效果图:
用到的小图,自行下载:
原理就是利用方向传感判断机头方向传值给定位:
方向传感代码:
import android.content.Context;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
/*
* @Comment :
* @Created :2018/10/25 19:01
* @Name : YJ
*/public class MyOrientationListener implements SensorEventListener {
private SensorManager mSensorManager;
private Context mContext;
private Sensor mSensor;
private float lastX;
private OnOrientationListener mOnOrientationListener;
public void setmOnOrientationListener(OnOrientationListener mOnOrientationListener) {
this.mOnOrientationListener = mOnOrientationListener;
}
public MyOrientationListener(Context context) {
this.mContext = context;
}
public void star() {
mSensorManager = (SensorManager) mContext
.getSystemService(Context.SENSOR_SERVICE);
if (mSensorManager != null) {
//获得方向传感器
mSensor = mSensorManager.getDefaultSensor(Sensor.TYPE_ORIENTATION);
}
if (mSensor != null) {
mSensorManager.registerListener(this, mSensor, SensorManager.SENSOR_DELAY_UI);
}
}
public void stop() {
//停止定位
mSensorManager.unregisterListener(this);
}
@Override
public void onSensorChanged(SensorEvent event) {
if (event.sensor.getType() == Sensor.TYPE_ORIENTATION) {
float x = event.values[SensorManager.DATA_X];
if (Math.abs(x - lastX) > 1.0) {
if (mOnOrientationListener != null) {
mOnOrientationListener.onOrientationChanged(x);
}
}
lastX = x;
}
}
@Override
public void onAccuracyChanged(Sensor sensor, int accuracy) {
}
public interface OnOrientationListener {
void onOrientationChanged(float x);
}
}然后在需要用到的地方调用:
private MyOrientationListener myOrientationListener;
这个再onCreate里面调用
private void initMyOrien() {
//初始化图标
bitmapDescriptor = BitmapDescriptorFactory.fromResource(R.mipmap.jiantou);
//方向传感器
myOrientationListener = new MyOrientationListener(this);
myOrientationListener.setmOnOrientationListener(new MyOrientationListener.OnOrientationListener() {
@Override
public void onOrientationChanged(float x) {
mLastX = x;
}
});
}最后在地图监听里面调用这个方法传递过来的方向值就行:
locData = new MyLocationData.Builder() .accuracy(location.getRadius()) .direction(mLastX)// 此处设置开发者获取到的方向信息，顺时针0-360 .latitude(mLatitude) .longitude(mLongitude).build(); mBaiduMap.setMyLocationData(locData);// 设置定位数据
下面是全部的代码:
布局文件的代码:
<?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context=".MainActivity"> <RelativeLayout android:layout_width="match_parent" android:layout_height="match_parent"> <com.baidu.mapapi.map.MapView android:id="@+id/mapview" android:layout_width="match_parent" android:layout_height="match_parent"> </com.baidu.mapapi.map.MapView> <ImageView android:layout_width="wrap_content" android:layout_height="40dp" android:layout_centerInParent="true" android:paddingBottom="20dp" android:src="@mipmap/dingwei2" /> <ImageView android:id="@+id/sa_location" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:layout_alignParentRight="true" android:layout_margin="10dp" android:src="@mipmap/icon_location" /> </RelativeLayout> </LinearLayout>
MainActivity里面的代码:
package com.example.administrator.baidumap1;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.ImageView;
import android.widget.Toast;
import com.baidu.location.BDLocation;
import com.baidu.location.BDLocationListener;
import com.baidu.location.LocationClient;
import com.baidu.location.LocationClientOption;
import com.baidu.mapapi.map.BaiduMap;
import com.baidu.mapapi.map.BitmapDescriptor;
import com.baidu.mapapi.map.BitmapDescriptorFactory;
import com.baidu.mapapi.map.MapStatus;
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.MyLocationData;
import com.baidu.mapapi.model.LatLng;
import java.io.PipedInputStream;
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
private MapView mMapView;
private BaiduMap mBaiduMap;
private ImageView mSaLocation;
private LocationClient mLocationClient;
private LatLng latLng;
private boolean isFirstLoc = true;//是否是首次定位
public BDLocationListener myListener = new MyLocationListener();
private MyLocationData locData;
private BitmapDescriptor bitmapDescriptor;
private MyOrientationListener myOrientationListener;
private float mLastX;
private double mLatitude;
private double mLongitude;
private PipedInputStream client;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
setInit();
initMap();
initMyOrien();
}
public void setInit() {
mMapView = findViewById(R.id.mapview);
mBaiduMap = mMapView.getMap();
mMapView.showZoomControls(false);
mSaLocation = findViewById(R.id.sa_location);
mSaLocation.setOnClickListener(this);
}
private void initMyOrien() {
//初始化图标
bitmapDescriptor = BitmapDescriptorFactory.fromResource(R.mipmap.jiantou);
//方向传感器
myOrientationListener = new MyOrientationListener(this);
myOrientationListener.setmOnOrientationListener(new MyOrientationListener.OnOrientationListener() {
@Override
public void onOrientationChanged(float x) {
mLastX = x;
}
});
}
/**
* 定位
*/
private void initMap() {
mBaiduMap.setMapType(BaiduMap.MAP_TYPE_NORMAL);//默认显示普通地图
mBaiduMap.setMyLocationEnabled(true);// 开启定位图层
mLocationClient = new LocationClient(getApplicationContext()); //声明LocationClient类
initLocation();//配置定位SDK参数
mLocationClient.registerLocationListener(myListener); //注册监听函数
mLocationClient.start();//开启定位
mLocationClient.requestLocation();//图片点击事件，回到定位点
}
/**
* 配置定位SDK参数
*/
private void initLocation() {
LocationClientOption option = new LocationClientOption();
option.setCoorType("bd09ll");//可选，coorType - 取值有3个： 返回国测局经纬度坐标系：gcj02 返回百度墨卡托坐标系 ：bd09 返回百度经纬度坐标系 ：bd09ll
Log.e("获取地址信息设置", option.getAddrType());//获取地址信息设置
option.setIsNeedAddress(true);//可选，设置是否需要地址信息，默认不需要
option.setOpenGps(true); // 是否打开gps进行定位
option.setLocationNotify(true);//可选，默认false，设置是否当GPS有效时按照1S/1次频率输出GPS结果
option.setScanSpan(1000);//可选，设置的扫描间隔，单位是毫秒，设置发起定位请求的间隔需要大于等于1000ms才是有效的
Log.e("获取设置的Prod字段值", option.getProdName());
option.setLocationMode(LocationClientOption.LocationMode.Hight_Accuracy);//可选，默认高精度，设置定位模式，高精度，低功耗，仅设备
option.setNeedDeviceDirect(true);//在网络定位时，是否需要设备方向- true:需要 ; false:不需要。默认为false
option.SetIgnoreCacheException(false);//可选，默认false，设置是否收集CRASH信息，默认收集
option.setIgnoreKillProcess(false);//可选，默认true，定位SDK内部是一个SERVICE，并放到了独立进程，设置是否在stop的时候杀死这个进程，默认不杀死
option.setIsNeedLocationDescribe(true);//可选，默认false，设置是否需要位置语义化结果，可以在BDLocation
// .getLocationDescribe里得到，结果类似于“在北京天安门附近”
option.setIsNeedLocationPoiList(true);//可选，默认false，设置是否需要POI结果，可以在BDLocation.getPoiList里得到
option.setEnableSimulateGps(false);//可选，默认false，设置是否需要过滤GPS仿真结果，默认需要
mLocationClient.setLocOption(option);
}
@Override
public void onClick(View view) {
switch (view.getId()) {
case R.id.sa_location:
//把定位点再次显现出来
MapStatusUpdate mapStatusUpdate = MapStatusUpdateFactory.newLatLng(latLng);
mBaiduMap.animateMapStatus(mapStatusUpdate);
break;
}
}
//实现BDLocationListener接口,BDLocationListener为结果监听接口，异步获取定位结果
public class MyLocationListener implements BDLocationListener {
@Override
public void onReceiveLocation(BDLocation location) {
latLng = new LatLng(location.getLatitude(), location.getLongitude());
// 构造定位数据
mLatitude= location.getLatitude();
mLongitude=location.getLongitude();
locData = new MyLocationData.Builder()
.accuracy(location.getRadius())
.direction(mLastX)// 此处设置开发者获取到的方向信息，顺时针0-360
.latitude(mLatitude)
.longitude(mLongitude).build();
mBaiduMap.setMyLocationData(locData);// 设置定位数据
//更新经纬度
mLatitude = location.getLatitude();
mLongitude = location.getLongitude();
//配置定位图层显示方式，使用自己的定位图标
//LocationMode定位模式有三种：普通模式，跟随模式，罗盘模式，在这使用普通模式
MyLocationConfiguration configuration = new MyLocationConfiguration(MyLocationConfiguration.LocationMode.NORMAL, true, bitmapDescriptor);
mBaiduMap.setMyLocationConfigeration(configuration);
if (isFirstLoc) {
isFirstLoc = false;
LatLng latLng = new LatLng(location.getLatitude(), location.getLongitude());
MapStatusUpdate msu= MapStatusUpdateFactory.newLatLng(latLng);
//改变地图状态
mBaiduMap.setMapStatus(msu);
MapStatus.Builder builder = new MapStatus.Builder();
builder.target(latLng).zoom(18.0f);
mBaiduMap.animateMapStatus(MapStatusUpdateFactory.newMapStatus(builder.build()));
if (location.getLocType() == BDLocation.TypeGpsLocation) {// GPS定位结果
Toast.makeText(MainActivity.this, location.getAddrStr(), Toast.LENGTH_SHORT).show();
} else if (location.getLocType() == BDLocation.TypeNetWorkLocation) {// 网络定位结果
Toast.makeText(MainActivity.this, location.getAddrStr(), Toast.LENGTH_SHORT).show();
} else if (location.getLocType() == BDLocation.TypeOffLineLocation) {// 离线定位结果
Toast.makeText(MainActivity.this, location.getAddrStr(), Toast.LENGTH_SHORT).show();
} else if (location.getLocType() == BDLocation.TypeServerError) {//服务器错误
Toast.makeText(MainActivity.this, "服务器错误，请检查", Toast.LENGTH_SHORT).show();
} else if (location.getLocType() == BDLocation.TypeNetWorkException) {//网络错误
Toast.makeText(MainActivity.this, "网络错误，请检查", Toast.LENGTH_SHORT).show();
} else if (location.getLocType() == BDLocation.TypeCriteriaException) {//手机模式错误
Toast.makeText(MainActivity.this, "手机模式错误，请检查是否飞行", Toast.LENGTH_SHORT).show();
}
}
}
}
@Override
protected void onStart() {
super.onStart();
//开启定位的允许
mBaiduMap.setMyLocationEnabled(true);
if (!mLocationClient.isStarted()) {
mLocationClient.start();
//开启方向传感器
myOrientationListener.star();
}
}
@Override
protected void onStop() {
super.onStop();
//关闭定位
mBaiduMap.setMyLocationEnabled(false);
mLocationClient.stop();
//停止方向传感器
myOrientationListener.stop();
}
@Override
protected void onResume() {
super.onResume();
mMapView.onResume();
}
@Override
protected void onPause() {
super.onPause();
mMapView.onPause();
}
@Override
protected void onDestroy() {
super.onDestroy();
mMapView.onDestroy();
}
}至于方向传感的工具类上面有就不贴了!
下载地址:https://download.csdn.net/download/lanrenxiaowen/10745509