为什么Android Studio无法解析"import com.google.android.gms.location.LocationRequest;"？

Question

我是编程Android应用程序的新手,我正在按照教程实现GPS定位.但Android Studio无法解析此导入:

import com.google.android.gms.location.LocationRequest;

我在开头写了这段代码:

package example.prova.it.prova5;

import android.hardware.Sensor;
import android.hardware.SensorManager;
import android.location.Location;
import android.location.LocationListener;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.TextView;

import com.google.android.gms.common.ConnectionResult;
import com.google.android.gms.common.api.GoogleApiClient;
import com.google.android.gms.location.LocationRequest;

import org.w3c.dom.Text;

import java.util.List;

public class MainActivity extends AppCompatActivity implements GoogleApiClient.OnConnectionFailedListener, GoogleApiClient.ConnectionCallbacks, LocationListener {

    private static final int REQUEST_RESOLVE_ERROR = 0;
    private static final String DIALOG_ERROR = null;
    private GoogleApiClient googleApiClient;
    private boolean resolvingError;
    private LocationRequest mLocationRequest;

我已经在Gradle中导入了这个依赖项

compile 'com.google.android.gms:play-services-maps:9.6.1'

有什么问题？
提前致谢(对不起我的英语不好)

Answer 1

您需要Location在Gradle文件中添加依赖项:

com.google.android.gms:play-services-location:9.6.1

您可以在此处找到Google Play服务中的所有个人API.

希望能帮助到你!