getlatitude() 메소드를 해결할 수 없습니다.

Question

프로그래밍에 익숙하지 않으며 Google 위치 API 자습서를 따르고 있습니다. 나는 모든 단계를 제대로 따라 왔지만, 다음 코드는 getlatitude() 및 getlongitude()에서 오류를 발생시킵니다. 오류 : getlatitude() 메서드를 해결할 수 없습니다. 누군가가이 문제를 지적 할 수 있다면 좋을 것입니다. 한 가지 더주의해야 할 점은 코드는 android.location.Location 클래스를 사용하지 않는 것으로 보이며 getlatitude()가 거기에서 올 것이라고 기대했습니다. mLastLocation의 종류에

import android.app.Activity; 
import android.os.Bundle; 
import android.util.Log; 
import android.widget.TextView; 

import com.google.android.gms.common.ConnectionResult; 
import com.google.android.gms.common.api.GoogleApiClient; 
import com.google.android.gms.common.api.GoogleApiClient.ConnectionCallbacks; 
import com.google.android.gms.common.api.GoogleApiClient.OnConnectionFailedListener; 
import com.google.android.gms.location.LocationServices; 
import android.location.Location; 


public class MainActivity extends Activity implements ConnectionCallbacks, OnConnectionFailedListener { 
    protected GoogleApiClient mGoogleApiClient; 

    /** 
    * Represents a geographical location. 
    */ 
    protected String mLastLocation; 
    protected static final String TAG = "basic-location-sample"; 
    protected TextView mLatitudeText; 
    protected TextView mLongitudeText; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 
     mLatitudeText = (TextView) findViewById((R.id.latitude_text)); 
     mLongitudeText = (TextView) findViewById((R.id.longitude_text)); 
     buildGoogleApiClient(); 
    } 

    protected synchronized void buildGoogleApiClient() { 

     mGoogleApiClient = new GoogleApiClient.Builder(this) 
       .addConnectionCallbacks(this) 
       .addOnConnectionFailedListener((OnConnectionFailedListener) this) 
       .addApi(LocationServices.API) 
       .build(); 
    } 
    @Override 
    protected void onStart() { 
     super.onStart(); 
     mGoogleApiClient.connect(); 
    } 

    @Override 
    protected void onStop() { 
     super.onStop(); 
     if (mGoogleApiClient.isConnected()) { 
      mGoogleApiClient.disconnect(); 
     } 
    } 

    @Override 
    public void onConnected(Bundle connectionHint) { 

     mLastLocation = String.valueOf(LocationServices.FusedLocationApi.getLastLocation(
       mGoogleApiClient)); 
     if (mLastLocation!= null) { 
      mLatitudeText.setText(String.valueOf(mLastLocation.getLatitude())); 
      mLongitudeText.setText(String.valueOf(mLastLocation.getLongitude())); 
     } 
} 

    @Override 
    public void onConnectionSuspended(int i) { 
     Log.i(TAG, "Connection suspended"); 
     mGoogleApiClient.connect(); 
    } 

    @Override 
    public void onConnectionFailed(ConnectionResult result) { 
     Log.i(TAG, "Connection failed: ConnectionResult.getErrorCode() = " + result.getErrorCode()); 
    } 


} 

Answer 1

봐 :

protected String mLastLocation; 

String

이 getLatitude 및 getLongitude 방법이 없습니다.

protected Location mLastLocation; 
... 
mLastLocation = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);