Android - Google地图为位置返回null [重复]

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这个问题在这里已有答案：

getLastKnownLocation() returns null [closed] 1回答

我需要在日志中看到我的位置，频率为0.1秒。

mMap.setMyLocationEnabled(true); LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE); Criteria criteria = new Criteria(); final Location location = locationManager.getLastKnownLocation(locationManager.getBestProvider(criteria, false)); for (int i = 1; i < 100; i++) new Handler().postDelayed(new Runnable() { @Override public void run() { if (ActivityCompat.checkSelfPermission(MapsActivity.this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED & & ActivityCompat.checkSelfPermission(MapsActivity.this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) { // TODO: Consider calling //ActivityCompat#requestPermissions // here to request the missing permissions, and then overriding //public void onRequestPermissionsResult(int requestCode, String[] permissions, //int[] grantResults) // to handle the case where the user grants the permission. See the documentation // for ActivityCompat#requestPermissions for more details. return; } mMap.setMyLocationEnabled(true); LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE); Criteria criteria = new Criteria(); final Location location = locationManager.getLastKnownLocation(locationManager.getBestProvider(criteria, false)); Log.d("Coordinates: ",location.getLongitude() + "," + location.getLatitude()); } }, 100 * i);

我通过模拟器看到日志中的坐标，但是当我通过USB连接手机时，我遇到了Log.d()线路崩溃，出现以下错误：