java - 无法解析方法getlatitude()

我是编程新手，正在学习google location api教程。我已经正确地遵循了所有步骤，但是，下面的代码在getLatitude（）和getLongitude（）处给出了错误信息。错误：无法解析方法getLatitude（）。如果有人能指出这个问题，那就太好了。还有一点需要注意的是，代码似乎从来没有使用过android.location.location类，我希望getLatitude（）会从那里来。

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());
    }


}

最佳答案

看看mLastLocation的类型：

protected String mLastLocation;

String没有getLatitude和getLongitude方法。变量的类型应为Location，并且在不调用String.valueOf的情况下初始化：

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