1. 添加必要的权限 在AndroidManifest.xml文件中添加以下权限：

2. 定位服务 Android提供了一些定位服务，可以选择使用其中之一。在这里，我们使用FusedLocationProviderClient来获取用户的经纬度信息。

private FusedLocationProviderClient fusedLocationClient;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    fusedLocationClient = LocationServices.getFusedLocationProviderClient(this);

    // check permission
    if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
        ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.ACCESS_FINE_LOCATION}, 1);
        return;
    }

    // get location
    fusedLocationClient.getLastLocation()
            .addOnSuccessListener(new OnSuccessListener() {
                @Override
                public void onSuccess(Location location) {
                    if (location != null) {
                        // save to database
                        saveLocationToDatabase(location.getLatitude(), location.getLongitude());
                    }
                }
            });
}

// handle permission granted or denied
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
    if (requestCode == 1) {
        if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
            fusedLocationClient.getLastLocation()
                    .addOnSuccessListener(new OnSuccessListener() {
                        @Override
                        public void onSuccess(Location location) {
                            if (location != null) {
                                // save to database
                                saveLocationToDatabase(location.getLatitude(), location.getLongitude());
                            }
                        }
                    });
        }
    }
}

// save location to database
private void saveLocationToDatabase(double latitude, double longitude) {
    SQLiteDatabase db = openOrCreateDatabase("location.db", MODE_PRIVATE, null);
    db.execSQL("CREATE TABLE IF NOT EXISTS location (id INTEGER PRIMARY KEY AUTOINCREMENT, latitude REAL, longitude REAL)");

    ContentValues values = new ContentValues();
    values.put("latitude", latitude);
    values.put("longitude", longitude);

    db.insert("location", null, values);
    db.close();
}

3. 读取保存的位置信息 读取保存在sqlite数据库中的位置信息，可以使用以下代码：

// read locations from database
private void readLocationsFromDatabase() {
    SQLiteDatabase db = openOrCreateDatabase("location.db", MODE_PRIVATE, null);
    Cursor cursor = db.rawQuery("SELECT * FROM location", null