无法在Android中获取当前的纬度和经度

Question

我是android的新手，我正在尝试获取当前位置的纬度和经度，为此，我使用的是“ com.google.android.gms：play-services：8.4.0 ”，并且出现此错误
java.lang.IllegalArgumentException：必须提供GoogleApiClient参数 。 我提到了以前的stckoverflow答案，但它没有帮助我。请帮助我，预先感谢

这是Mapsactivity.java的代码

   public class MapsActivity extends FragmentActivity{

   private GoogleMap mMap;
AppLocationService appLocationService;
GoogleApiClient mGoogleApiClient;
private Location mLastLocation;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_maps);
   setUpMapIfNeeded();
} 

  private void setUpMapIfNeeded() {
    if (mMap == null) {

        mMap = ((SupportMapFragment) 
          getSupportFragmentManager().findFragmentById(R.id.map))
                .getMap();

        if (mMap != null) {

            displayLocation();
        }
    }
}
private void displayLocation() {

    mLastLocation = LocationServices.FusedLocationApi
            .getLastLocation(mGoogleApiClient);

    if (mLastLocation != null) {
        double latitude = mLastLocation.getLatitude();
        double longitude = mLastLocation.getLongitude();

        Log.d("result", latitude + ", " + longitude);

    } else {

      Log.d("result2","(Couldn't get the location. Make sure location is
   enabled on the device)");
     }
 }
}

这是我的清单文件的代码

 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.malli.myapplication" >

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission  
 android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" 
/>

<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />

<application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >
    <meta-data
        android:name="com.google.android.gms.version"
        android:value="@integer/google_play_services_version" />
    <meta-data
        android:name="com.google.android.maps.v2.API_KEY"
        android:value="@string/google_maps_key" />

    <activity
        android:name=".MapsActivity"
        android:label="@string/title_activity_maps" >
        <meta-data
            android:name="com.google.android.gms.version"
            android:value="@integer/google_play_services_version"/>
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
</application>

Answer 1

您尚未初始化mGoogleApiClient变量。 请先初始化它。

mGoogleApiClient = new GoogleApiClient.Builder(this)
            .addConnectionCallbacks(this)
            .addOnConnectionFailedListener(this)
            .addApi(LocationServices.API).build();

 mLastLocation = LocationServices.FusedLocationApi
            .getLastLocation(mGoogleApiClient);

注意：这只是初始化GoogleApiClient的示例