使用不同的位置请求模式检索位置时出现问题

Posted 2023-04-14

【中文标题】使用不同的位置请求模式检索位置时出现问题

【英文标题】：Getting issue while retrieve location with different location request mode

【发布时间】：2019-08-31 12:34:15

【问题描述】：

对于检索位置，我使用了 GoogleAPIClient 和 FusedLocationProvider API。

这些函数在onCreate() 方法中。

 createLocationRequest();
 mGoogleApiClient = new GoogleApiClient.Builder(this)
            .addApi(LocationServices.API)
            .addConnectionCallbacks(this)
            .addOnConnectionFailedListener(this)
            .build();
 gpsChecker();

完整代码

 protected void createLocationRequest() 
    mLocationRequest = new LocationRequest();
    mLocationRequest.setInterval(INTERVAL);
    mLocationRequest.setFastestInterval(FASTEST_INTERVAL);
    mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);


public void gpsChecker() 
    LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder()
            .addLocationRequest(mLocationRequest);
    builder.setAlwaysShow(true);
    PendingResult<LocationSettingsResult> result =
            LocationServices.SettingsApi.checkLocationSettings(mGoogleApiClient, builder.build());
    result.setResultCallback(new ResultCallback<LocationSettingsResult>() 
        @Override
        public void onResult(LocationSettingsResult result) 
            final Status status = result.getStatus();
            switch (status.getStatusCode()) 
                case LocationSettingsStatusCodes.SUCCESS:
                    // All location settings are satisfied. The client can initialize location
                    // requests here.
                    break;
                case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
                    // Location settings are not satisfied. But could be fixed by showing the user
                    // a dialog.
                    try 
                        // Show the dialog by calling startResolutionForResult(),
                        // and check the result in onActivityResult().
                        status.startResolutionForResult(
                                AddVisitActivity.this, 1000);
                     catch (IntentSender.SendIntentException e) 
                        // Ignore the error.
                    
                    break;
                case LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAILABLE:
                    // Location settings are not satisfied. However, we have no way to fix the
                    // settings so we won't show the dialog.
                    break;
            
        
    );

为了运行时权限，我这样做了。

  protected void startLocationUpdates() 
    if (ActivityCompat.shouldShowRequestPermissionRationale
            (AddVisitActivity.this, android.Manifest.permission.ACCESS_FINE_LOCATION)) 
        Snackbar.make(findViewById(android.R.id.content),
                "Please Grant Permissions",
                Snackbar.LENGTH_INDEFINITE).setAction("ENABLE",
                new View.OnClickListener() 
                    @Override
                    public void onClick(View v) 
                        if (ActivityCompat.checkSelfPermission(AddVisitActivity.this, android.Manifest.permission.ACCESS_FINE_LOCATION)
                                != PackageManager.PERMISSION_GRANTED) 
                            ActivityCompat.requestPermissions(AddVisitActivity.this,
                                    new String[]android.Manifest.permission.ACCESS_FINE_LOCATION,
                                    REQUEST_CODE_LOCATION);
                         else 
                            LocationServices.FusedLocationApi.requestLocationUpdates(
                                    mGoogleApiClient, mLocationRequest, AddVisitActivity.this);
                            Log.d(TAG, "Location update started ...: ");
                        
                    
                ).show();
     else 

        if (ActivityCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION)
                != PackageManager.PERMISSION_GRANTED) 
            ActivityCompat.requestPermissions(this,
                    new String[]android.Manifest.permission.ACCESS_FINE_LOCATION,
                    REQUEST_CODE_LOCATION);
         else 
            LocationServices.FusedLocationApi.requestLocationUpdates(
                    mGoogleApiClient, mLocationRequest, this);
            Log.d(TAG, "Location update started ...: ");
        
    

使用 gpsChecker() 和请求代码 1000 并在 onActivityResult() 中检查 GPS 是否启用这样做了。

 if (requestCode == 1000) 
        switch (resultCode) 
            case Activity.RESULT_OK:
                Log.i(TAG, "User agreed to make required location settings changes.");
                startLocationUpdates();
                break;
            case Activity.RESULT_CANCELED:
                Log.i(TAG, "User chose not to make required location settings changes.");
                finish();
                break;
        
    

当我在某些设备中执行此代码时，它的工作和在某些设备中，位置请求自动设置为仅设备或电池节省，尽管我已设置mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);

注意： Mi Note 4、Vivo V9 Pro、Mi Note 5 Pro 和其他一些遇到问题的设备

那么我需要在我的代码中进行哪些更改，这样它才能在高精度下正常工作？

【参考方案1】：

终于通过改变解决了

mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);

到

mLocationRequest.setPriority(LocationRequest.PRIORITY_BALANCED_POWER_ACCURACY);

改变

private static final long INTERVAL = 1000 * 60 * 60;
private static final long FASTEST_INTERVAL = 1000 * 5;

间隔时间为 30 分钟，最快间隔为 5 秒，这意味着在 5 秒内获得一次位置，然后在 30 分钟内获得新位置。

【参考方案2】：

通过 GPS Provider 尝试此解决方案，并确保您的 GPS 服务已开启。

静态最终 int LOCATION_INTERVAL = 1000; 静态最终浮点 LOCATION_DISTANCE = 10f;

//把这个放在onCreate(); LocationManager locationManager = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);

    Criteria criteria = new Criteria();

    mprovider = locationManager.getBestProvider(criteria, false);

    if (mprovider != null && !mprovider.equals("")) 
        if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) 
            return;
        
        Location location = locationManager.getLastKnownLocation(mprovider);
        locationManager.requestLocationUpdates(mprovider, LOCATION_INTERVAL, LOCATION_DISTANCE, this);

        if (location != null)
            onLocationChanged(location);
        else
            Toast.makeText(getBaseContext(), "No Location Provider Found Check Your Code", Toast.LENGTH_SHORT).show();
    

    //put this LocationListener after onCreate();
    public LocationListener mLocationListener = new LocationListener() 

    @Override
    public void onLocationChanged(Location location) 
        if (location != null) 
            Log.e(String.format("%f, %f", location.getLatitude(), location.getLongitude()), "");
            Log.e("Location available", "Location available");
            locationManager.removeUpdates(mLocationListener);
         else 
            Log.e("Location is null", "Location is null");
        

        current_latitude = location.getLatitude();
        current_longitude = location.getLongitude();

       /* LatLng latLng = new LatLng(current_latitude, current_longitude);
        points.add(latLng);
        redrawLine();*/

        Log.e("current_latitude", String.valueOf(current_latitude));
        Log.e("current_longitude", String.valueOf(current_longitude));

        if (location.hasSpeed()) 
            //progressBarCircularIndeterminate.setVisibility(View.GONE);
            String speed = String.format(Locale.ENGLISH, "%.0f", location.getSpeed() * 3.6) + "km/h";

            SpannableString s = new SpannableString(speed);
            s.setSpan(new RelativeSizeSpan(0.25f), s.length() - 4, s.length(), 0);
            txt_current_speed.setText(s);
        

    

    @Override
    public void onStatusChanged(String s, int i, Bundle bundle) 

    

    @Override
    public void onProviderEnabled(String s) 

    

    @Override
    public void onProviderDisabled(String s) 

    
;

【讨论】：

感谢您的回复，但我的问题是定位模式。