Android 尝试使用GoogleAppClient获取当前位置无效

我有一个简单的项目，通过

GoogleAppClient

获得纬度和经度，我正在努力使它工作。这就是我目前所拥有的

格拉德尔：

compile 'com.google.android.gms:play-services-maps:10.2.1'
compile 'com.google.android.gms:play-services-plus:10.2.1'
compile 'com.google.android.gms:play-services-location:10.2.1'

舱单：

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

---

结果日志为空，我不确定可能是什么，可能是权限？谢谢

对于Api Marshmallow及以上版本，授予运行时权限如下：

if (ContextCompat.checkSelfPermission(this, 
Manifest.permission.ACCESS_FINE_LOCATION)
            == PackageManager.PERMISSION_GRANTED) {
   // do your work
} else {
//  request permission.
            ActivityCompat.requestPermissions(this, new String[]
{
Manifest.permission.ACCESS_FINE_LOCATION}, MY_LOCATION_REQUEST_CODE);
}

public void onRequestPermissionsResult(int requestCode, String[] 
permissions, int[] grantResults) {
if (requestCode == MY_LOCATION_REQUEST_CODE) {
  if (permissions.length == 1 &&
      permissions[0] == Manifest.permission.ACCESS_FINE_LOCATION &&
      grantResults[0] == PackageManager.PERMISSION_GRANTED) {
 /// granted do your work
 } else {
  // Permission was denied. Display an error message.
 }
}

if (ContextCompat.checkSelfPermission(this, 
Manifest.permission.ACCESS_FINE_LOCATION)
            == PackageManager.PERMISSION_GRANTED) {
   // do your work
} else {
//  request permission.
            ActivityCompat.requestPermissions(this, new String[]
{
Manifest.permission.ACCESS_FINE_LOCATION}, MY_LOCATION_REQUEST_CODE);
}

public void onRequestPermissionsResult(int requestCode, String[] 
permissions, int[] grantResults) {
if (requestCode == MY_LOCATION_REQUEST_CODE) {
  if (permissions.length == 1 &&
      permissions[0] == Manifest.permission.ACCESS_FINE_LOCATION &&
      grantResults[0] == PackageManager.PERMISSION_GRANTED) {
 /// granted do your work
 } else {
  // Permission was denied. Display an error message.
 }
}