如何在android中獲取當前位置？

Question

我正在使用以下代碼獲取我當前的位置，沒有 GPS，但我想在祝酒詞中顯示坐標。 我試過這段代碼，但它顯示我的包名而不是坐標！

    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    LocationManager locationManager = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);

    // Define a listener that responds to location updates

    LocationListener locationListener = new LocationListener() {
        public void onLocationChanged(Location location) {
          // Called when a new location is found by the network location provider.
          //makeUseOfNewLocation(location);
        }

    public void onStatusChanged(String provider, int status, Bundle extras) {}

    public void onProviderEnabled(String provider) {}

    public void onProviderDisabled(String provider) {}

    };

    // Register the listener with the Location Manager to receive location updates
    locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, locationListener);
    Toast.makeText(getBaseContext(), "location is:"+locationListener, Toast.LENGTH_LONG).show();
}

Answer 1

您的onLocationChanged()回調中只有位置。

// Acquire a reference to the system Location Manager
LocationManager locationManager = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);

// Define a listener that responds to location updates
LocationListener locationListener = new LocationListener() {

     public void onLocationChanged(Location location) {

        // Called when a new location is found by the network location provider.
        Toast.makeText(getBaseContext(), "location is:"+location, Toast.LENGTH_LONG).show();
    }

    public void onStatusChanged(String provider, int status, Bundle extras) {}

    public void onProviderEnabled(String provider) {}

    public void onProviderDisabled(String provider) {}
};

// Register the listener with the Location Manager to receive location updates
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, locationListener);

Answer 2

您正在嘗試敬酒 locationListener 對象。您必須創建一個 Location 位置； 烘烤時的對象和吐司 location.getLatitude() 和 location.getLongitude() 方法。

Answer 3

您當前的代碼在注冊 LocationListener 時祝酒，並在偵聽器上調用 Object.toString() ，它只返回偵聽器的類名。

您想將 Toast.makeText(... 行移動到 onLocationChanged 函數內部，並將文本更改為"location is:"+location ，或者可能"location is: "+location.getLatitude()+","+location.getLongitude() 。

此外，每次他獲得新位置時，此代碼將繼續制作 Toasts。 您可能希望使用 LocationManager.requestSingleUpdate 僅制作一個 toast，或者將 LocationManager.removeUpdates 放在 onDestroy 中，以便在活動完成時停止。

Answer 4

首先創建 FMLocationListener 類。

 private static class FMLocationListener implements LocationListener {

                public void onLocationChanged(Location location) {

                }

                public void onProviderDisabled(String provider) {

                }

            public void onProviderEnabled(String provider) {

            }

            public void onStatusChanged(String provider, int status, Bundle extras) {

            }

        }

然后使用以下代碼