Java 计算行驶距离(而不是行驶距离)
我需要计算汽车行驶的距离!不是距离,不是距离到否。如果我们通过谷歌提供的API计算,距离可能完全不同。谷歌可以提供从一个点到另一个点的1公里距离,但汽车可以按照骑手想要的方式行驶800米。使用加速计没有帮助。它适用于步行,但不适用于更快的速度 有没有关于如何计算汽车行驶距离的建议 我试过使用谷歌的定位API:distanceTo或distanceBetween根本不是一个选项。它可以给出与实际情况显著不同的结果。在现实生活中,汽车可以在很短的地方行驶,并在800米内到达目标,而谷歌可以给出位置之间1公里的距离 下面是我的申请代码。速度惊人地正确Java 计算行驶距离(而不是行驶距离),java,android,kotlin,distance,Java,Android,Kotlin,Distance,我需要计算汽车行驶的距离!不是距离,不是距离到否。如果我们通过谷歌提供的API计算,距离可能完全不同。谷歌可以提供从一个点到另一个点的1公里距离,但汽车可以按照骑手想要的方式行驶800米。使用加速计没有帮助。它适用于步行,但不适用于更快的速度 有没有关于如何计算汽车行驶距离的建议 我试过使用谷歌的定位API:distanceTo或distanceBetween根本不是一个选项。它可以给出与实际情况显著不同的结果。在现实生活中,汽车可以在很短的地方行驶,并在800米内到达目标,而谷歌可以给出位置之
class HomeScreen : AppCompatActivity(), GoogleApiClient.ConnectionCallbacks,
GoogleApiClient.OnConnectionFailedListener, SensorEventListener {
override fun onSensorChanged(event: SensorEvent?) {
val sensor = event?.sensor
val values = event?.values
var value = -1
if (values != null && values.size ?: 0 > 0) {
value = values[0].toInt()
}
if (sensor != null &&
sensor.type == Sensor.TYPE_STEP_DETECTOR
) {
val finalSteps = getDistanceRun(steps)
val finalStepsTruncated = String.format("%.2f", finalSteps)
distanceTV.text = "$finalStepsTruncated"
steps++
}
}
override fun onAccuracyChanged(p0: Sensor?, p1: Int) {
}
override fun onConnectionFailed(p0: ConnectionResult) {
val failed = p0
}
@SuppressLint("MissingPermission")
override fun onConnected(p0: Bundle?) {
if (locationPermissionsGranted(this)) {
fusedLocationClient?.requestLocationUpdates(locationRequest, object : LocationCallback() {
override fun onLocationResult(p0: LocationResult?) {
val location = p0
val metersPerSecond: Float = location?.lastLocation?.speed ?: 0f
val speed = metersPerSecond * 3600 / 1000
speedTV.text = "${Math.round(speed)} KM/H"
}
}, null)
} else {
requestPermission(
this, 0,
Manifest.permission.ACCESS_COARSE_LOCATION, Manifest.permission.ACCESS_FINE_LOCATION
)
}
}
override fun onConnectionSuspended(p0: Int) {
val suspended = p0
}
private var fusedLocationClient: FusedLocationProviderClient? = null
private var mGoogleApiClient: GoogleApiClient? = null
private lateinit var locationRequest: LocationRequest
private var steps: Long = 0
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_home_screen)
locationRequest = LocationRequest()
locationRequest.priority = LocationRequest.PRIORITY_HIGH_ACCURACY;
locationRequest.interval = 1000
locationRequest.fastestInterval = 500
if (PermissionManager.locationPermissionsGranted(this)) {
mGoogleApiClient = GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build()
mGoogleApiClient?.connect()
fusedLocationClient = LocationServices.getFusedLocationProviderClient(this)
createLocationRequest()
} else {
requestPermission(
this, 0,
Manifest.permission.ACCESS_COARSE_LOCATION, Manifest.permission.ACCESS_FINE_LOCATION
)
}
val sManager = getSystemService(Context.SENSOR_SERVICE) as SensorManager
val stepSensor = sManager.getDefaultSensor(Sensor.TYPE_STEP_DETECTOR)
sManager.registerListener(this, stepSensor, SensorManager.SENSOR_DELAY_FASTEST);
}
override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<out String>, grantResults: IntArray) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults)
if (PermissionManager.locationPermissionsGranted(this)) {
mGoogleApiClient = GoogleApiClient.Builder(this)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.addApi(LocationServices.API)
.build()
mGoogleApiClient?.connect()
fusedLocationClient = LocationServices.getFusedLocationProviderClient(this)
createLocationRequest()
}
}
protected fun createLocationRequest() {
val builder = LocationSettingsRequest.Builder()
.addLocationRequest(locationRequest)
val client = LocationServices.getSettingsClient(this)
val task = client.checkLocationSettings(builder.build())
task.addOnSuccessListener(this) {
// All location settings are satisfied. The client can initialize
// location requests here.
// ...
}
task.addOnFailureListener(this) { e ->
if (e is ResolvableApiException) {
// Location settings are not satisfied, but this can be fixed
// by showing the user a dialog.
try {
// Show the dialog by calling startResolutionForResult(),
// and check the result in onActivityResult().
e.startResolutionForResult(
this@HomeScreen,
0
)
} catch (sendEx: IntentSender.SendIntentException) {
// Ignore the error.
}
}
}
}
fun getDistanceRun(steps: Long): Float {
return (steps * 78).toFloat() / 100000.toFloat()
}
}
class主屏幕:AppCompativeActivity(),GoogleAppClient.ConnectionCallbacks,
GoogleAppClient.OnConnectionFailedListener,SensorEventListener{
覆盖传感器更改的乐趣(事件:传感器事件?){
val传感器=事件?传感器
val值=事件?.值
var值=-1
如果(值!=null&&values.size?:0>0){
value=值[0].toInt()
}
如果(传感器)=空&&
sensor.type==sensor.type\u步进检测器
) {
val finalSteps=getDistanceRun(步骤)
val finalStepsTruncated=String.format(“%.2f”,finalSteps)
distanceTV.text=“$finalStepsTruncated”
台阶++
}
}
覆盖精度更改(p0:Sensor?,p1:Int){
}
覆盖连接失败(p0:ConnectionResult){
val失败=p0
}
@SuppressLint(“丢失许可”)
覆盖未连接的乐趣(p0:捆绑?){
如果(位置许可证声明(本)){
fusedLocationClient?.RequestLocationUpdate(locationRequest,对象:LocationCallback(){
覆盖趣味onLocationResult(p0:LocationResult?){
val位置=p0
val metersPerSecond:Float=位置?.lastLocation?.speed?:0f
val速度=米每秒*3600/1000
speedTV.text=“${Math.round(速度)}公里/小时”
}
},空)
}否则{
请求许可(
这个,0,,
Manifest.permission.ACCESS\u粗略位置,Manifest.permission.ACCESS\u精细位置
)
}
}
覆盖连接已暂停(p0:Int){
val=p0
}
私有变量fusedLocationClient:FusedLocationProviderClient?=null
私有变量mGoogleApiClient:GoogleApiClient?=null
私有lateinit var locationRequest:locationRequest
私有变量步骤:Long=0
重写创建时的乐趣(savedInstanceState:Bundle?){
super.onCreate(savedInstanceState)
setContentView(R.layout.activity\u主屏幕)
locationRequest=locationRequest()
locationRequest.priority=locationRequest.priority\u高精度;
locationRequest.interval=1000
locationRequest.FastTestInterval=500
if(许可证经理位置许可证授权(本)){
mGoogleApiClient=GoogleApiClient.Builder(此)
.addConnectionCallbacks(此)
.addOnConnectionFailedListener(此)
.addApi(LocationServices.API)
.build()
mGoogleApiClient?.connect()
fusedLocationClient=LocationServices.getFusedLocationProviderClient(此)
createLocationRequest()
}否则{
请求许可(
这个,0,,
Manifest.permission.ACCESS\u粗略位置,Manifest.permission.ACCESS\u精细位置
)
}
val sManager=getSystemService(Context.SENSOR_服务)作为SensorManager
val stepSensor=sManager.getDefaultSensor(传感器类型\u STEP\u检测器)
sManager.registerListener(此、stepSensor、SensorManager.SENSOR\u DELAY\u faster);
}
重写onRequestPermissionsResult(请求代码:Int,权限:Array,GrantResult:IntArray){
super.onRequestPermissionsResult(请求代码、权限、GrantResult)
if(许可证经理位置许可证授权(本)){
mGoogleApiClient=GoogleApiClient.Builder(此)
.addConnectionCallbacks(此)
.addOnConnectionFailedListener(此)
.addApi(LocationServices.API)
.build()
mGoogleApiClient?.connect()
fusedLocationClient=LocationServices.getFusedLocationProviderClient(此)
createLocationRequest()
}
}
受保护的fun createLocationRequest(){
val builder=LocationSettingsRequest.builder()
.addLocationRequest(locationRequest)
val client=LocationServices.getSettingsClient(此)
val task=client.checkLocationSettings(builder.build())
task.addOnSuccessListener(此){
//满足所有位置设置。客户端可以初始化
//这里有位置请求。
// ...
}
task.addOnFailureListener(this){e->
如果(e是可解决的异常){
//不满足位置设置,但可以修复此问题
//通过向用户显示一个对话框。
试一试{
//通过调用startResolutionForResult()显示对话框,
//并在onActivityResult()中检查结果。
e、 StartResult解决方案(
this@HomeScreen,
0
)
}catch(sendEx:IntentSender.SendIntentException){
//忽略错误。
}
}
}
}
趣味getDistanceRun(步数:长):浮动{
返回(步骤*78).toFloat()/100000.toFl
import android.Manifest;
import android.app.Activity;
import android.content.pm.PackageManager;
import android.os.Looper;
import android.support.v4.app.ActivityCompat;
import android.util.Log;
import android.widget.Toast;
import com.google.android.gms.location.FusedLocationProviderClient;
import com.google.android.gms.location.LocationCallback;
import com.google.android.gms.location.LocationRequest;
import com.google.android.gms.location.LocationResult;
import com.google.android.gms.location.LocationServices;
import com.karumi.dexter.Dexter;
import com.karumi.dexter.MultiplePermissionsReport;
import com.karumi.dexter.PermissionToken;
import com.karumi.dexter.listener.PermissionRequest;
import com.karumi.dexter.listener.multi.MultiplePermissionsListener;
import java.util.List;
/**
* Created by Ibkunle Adeoluwa on 1/8/2019.
*/
public class LocationManager {
private FusedLocationProviderClient fusedLocationProviderClient;
private LocationCallback locationCallback;
private LocationRequest locationRequest;
//TODO Import these Libraries in gradle
/*
implementation 'com.google.android.gms:play-services-location:11.8.0'
implementation 'com.karumi:dexter:5.0.0'
*/
private Activity myActivity;
public LocationManager(Activity myActivity) {
this.myActivity = myActivity;
}
public void requestLocationPermissions() {
//Request required permissions using Dexter Library ACCESS_COARSE_LOCATION & ACCESS_FINE_LOCATION
Dexter.withActivity(myActivity)
.withPermissions(Manifest.permission.ACCESS_COARSE_LOCATION,
Manifest.permission.ACCESS_FINE_LOCATION)
.withListener(new MultiplePermissionsListener() {
@Override
public void onPermissionsChecked(MultiplePermissionsReport report) {
if (report.areAllPermissionsGranted()) {
buildLocationRequest();
buildLocationCallback();
if (ActivityCompat.checkSelfPermission(myActivity, Manifest.permission.ACCESS_FINE_LOCATION)
!= PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(myActivity, Manifest.permission.ACCESS_COARSE_LOCATION)
!= PackageManager.PERMISSION_GRANTED) {
return;
}
fusedLocationProviderClient = LocationServices.getFusedLocationProviderClient(myActivity);
fusedLocationProviderClient.requestLocationUpdates(locationRequest, locationCallback, Looper.myLooper());
}
}
@Override
public void onPermissionRationaleShouldBeShown(List<PermissionRequest> permissions, PermissionToken token) {
Toast.makeText(myActivity, "Location Permission Denied", Toast.LENGTH_SHORT).show();
}
}).check();
}
private void buildLocationRequest() {
//Get Location
locationRequest = new LocationRequest();
locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
locationRequest.setInterval(5000);
locationRequest.setSmallestDisplacement(10.0f);
}
private Location buildLocationCallback() {
//Process location response
final Location location = new Location();
locationCallback = new LocationCallback() {
@Override
public void onLocationResult(LocationResult locationResult) {
super.onLocationResult(locationResult);
//Log
Log.d("Location", locationResult.getLastLocation().getLatitude()
+ "/" + locationResult.getLastLocation().getLongitude());
location.setLatitude(locationResult.getLastLocation().getLatitude());
location.setLongitude(locationResult.getLastLocation().getLongitude());
}
};
return location;
}
//TODO How to Use
/***
* Sample Request
*
System.out.println(distance(32.9697, -96.80322, 29.46786, -98.53506, 'M') + " Miles\n");
System.out.println(distance(32.9697, -96.80322, 29.46786, -98.53506, 'K') + " Kilometers\n");
System.out.println(distance(32.9697, -96.80322, 29.46786, -98.53506, 'N') + " Nautical Miles\n");
System.out.println(distance(10.46786, -98.53506,32.9697, -96.80322, 'M') + " Initial Miles\n");
System.out.println(distance(32.9697, -96.80322, 29.46786, -98.53506, 'M') + " Covered Miles\n");
System.out.println(coveredDistance(distance(10.46786, -98.53506,32.9697, -96.80322), distance(32.9697, -96.80322, 29.46786, -98.53506))+ " Left Distance\n");
System.out.println(percentageCoveredDistance(262.6777938054349,1558.5453389875424)+ " Covered Distance Percentage \n");
*
*
***/
/**
* Expected Output
*
262.6777938054349 Miles
422.73893139401383 Kilometers
228.10939614063963 Nautical Miles
1558.5453389875424 Initial Miles
262.6777938054349 Covered Miles
1295.8675451821075 Left Distance
17% Covered Distance Percentage
*
*
**/
/**
*
* @param lat1
* @param lon1
* @param lat2
* @param lon2
* @param unit
* @return
*/
private static double distance(double lat1, double lon1, double lat2, double lon2, char unit) {
double theta = lon1 - lon2;
double dist = Math.sin(deg2rad(lat1)) * Math.sin(deg2rad(lat2)) + Math.cos(deg2rad(lat1)) * Math.cos(deg2rad(lat2)) * Math.cos(deg2rad(theta));
dist = Math.acos(dist);
dist = rad2deg(dist);
dist = dist * 60 * 1.1515;
if (unit == 'K') {
dist = dist * 1.609344;
} else if (unit == 'N') {
dist = dist * 0.8684;
}
return (dist);
}
/**
*
* @param lat1
* @param lon1
* @param lat2
* @param lon2
* @return
*/
private static double distance(double lat1, double lon1, double lat2, double lon2) {
double theta = lon1 - lon2;
double dist = Math.sin(deg2rad(lat1)) * Math.sin(deg2rad(lat2)) + Math.cos(deg2rad(lat1)) * Math.cos(deg2rad(lat2)) * Math.cos(deg2rad(theta));
dist = Math.acos(dist);
dist = rad2deg(dist);
dist = dist * 60 * 1.1515;
return (dist);
}
/*:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::*/
/*:: This function converts decimal degrees to radians :*/
/*:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::*/
/**
*
* @param deg
* @return
*/
private static double deg2rad(double deg) {
return (deg * Math.PI / 180.0);
}
/*:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::*/
/*:: This function converts radians to decimal degrees :*/
/*:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::*/
/**
*
* @param rad
* @return
*/
private static double rad2deg(double rad) {
return (rad * 180.0 / Math.PI);
}
/*:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::*/
/*:: This function converts subtracts initial from current distance:*/
/*:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::*/
/**
*
* @param initialDistance
* @param currentDistance
* @return
*/
private static double coveredDistance(double initialDistance, double currentDistance) {
return (initialDistance - currentDistance);
}
/*:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::*/
/*::This function converts the covered distance to percentage of the total :*/
/*:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::*/
/**
*
* @param coveredDistance
* @param totalDistance
* @return
*/
private static String percentageCoveredDistance(double coveredDistance, double totalDistance) {
double percent = (100 * coveredDistance) / totalDistance;
return String.format("%.0f%%", percent);
}
}