java - 无论我身在何处，我的应用程序都会返回相同的位置

Question

所以我希望我的应用程序能够跟踪手机的位置。我正在使用 FusedLocationProviderClient 来获取位置。一个人单击一个按钮，然后我的应用程序运行一个 trackLocation() 函数。但是，无论我身在何处，我的功能都会返回相同的经度和纬度。这是trackLocation：

 private void trackLocation(){
    button.setText("Tracking");
    fusedLocationClient= LocationServices.getFusedLocationProviderClient(MainActivity.this);
    if(ContextCompat.checkSelfPermission( MainActivity.this,android.Manifest.permission.ACCESS_COARSE_LOCATION ) != PackageManager.PERMISSION_GRANTED){
        ActivityCompat.requestPermissions(
                MainActivity.this,
                new String [] { Manifest.permission.ACCESS_COARSE_LOCATION,android.Manifest.permission.ACCESS_FINE_LOCATION },
                1
        );
    }
    fusedLocationClient.getLastLocation().addOnSuccessListener(MainActivity.this, new OnSuccessListener<Location>() {
        @Override
        public void onSuccess(Location location) {
            double latitude=location.getLatitude();
            double longitude=location.getLongitude();
            TextView textView=findViewById(R.id.textView);
            String latText=Double.toString(latitude);
            String longText=Double.toString(longitude);
            textView.setText(latText+" "+longText);
        }
    });
}

先感谢您。

标签： javaandroidlocation

Answer 1

试试这个来获取位置更新。您需要调用此函数以定期获取更新。根据您的喜好设置间隔。

private LocationRequest locationRequest;
private LocationCallback locationCallback;
locationRequest = LocationRequest.create();
locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
locationRequest.setInterval(20 * 1000);
locationCallback = new LocationCallback() {
    @Override
    public void onLocationResult(LocationResult locationResult) {
        if (locationResult == null) {
            return;
        }
        for (Location location : locationResult.getLocations()) {
            if (location != null) {
                wayLatitude = location.getLatitude();
                wayLongitude = location.getLongitude();
            }
        }
    }
};