相关疑难解决方法(0)

我试图让用户使用当前位置LocationManager.我做了很多研究,似乎找不到任何有同样问题的人.该OnLocationChanged回调似乎永远不会被调用.下面是我的各种代码和logcat.

protected LocationListener locationListener;
protected LocationManager locationManager;
protected Context context;

我的OnCreate()方法

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    Log.v(TAG, "IN ON CREATE");

    this.context = getActivity();

    registerLocationUpdates();
}

我的registerLocationUpdates方法

void registerLocationUpdates() {
    Criteria criteria = new Criteria();
    criteria.setAccuracy(Criteria.ACCURACY_LOW);
    criteria.setPowerRequirement(Criteria.POWER_LOW);
    criteria.setAltitudeRequired(false);
    criteria.setBearingRequired(false);

    locationManager = (LocationManager)getActivity().getSystemService(LOCATION_SERVICE);

    provider = locationManager.getBestProvider(criteria, true);

    // Cant get a hold of provider
    if (provider == null) {
        Log.v(TAG, "Provider is null");
        showNoProvider();
        return;
    } else {
        Log.v(TAG, "Provider: " + …