Android棉花糖应用程序中位置的权限问题

我正在学习开发一个Android应用程序，以便在Google开发者论坛之后获取设备位置：@ http://developer.android.com/training/location/retrieve-current.html#last-known @ http://developer.android。 com / training / location / receive-location-updates.html

该示例显示了如何为此目的使用Google PLay Services。但是该getLastLocation()函数始终返回null。

位置位置= LocationServices.FusedLocationApi.getLastLocation（mGoogleApiClient）;

由于最初位置可能为空，所以我添加了以下几行以接收定期的位置更新

LocationServices.FusedLocationApi.requestLocationUpdates（mGoogleApiClient，mLocationRequest，this）;

这将引发以下消息的异常

客户端必须具有ACCESS_COARSE_LOCATION或ACCESS_FINE_LOCATION权限才能执行任何位置操作

我已经在清单文件中添加了权限：

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

我也打开了Google Maps来更新Google Play服务中的当前位置，但是同样的问题仍然存在。我是Android开发的新手，在发布此问题之前，我已经进行了很多搜索，但没有找到适合我的解决方案。我正在Android Marshmallow设备上进行测试，使用Android Studio 1.3.2

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="newray.acpsa1">
    <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">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

    </application>

</manifest>

活动中的onCreate函数

 @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        mGoogleApiClient = new GoogleApiClient.Builder(this)
                .addConnectionCallbacks(this)
                .addOnConnectionFailedListener(this)
                .addApi(LocationServices.API)
                .build();
        mGoogleApiClient.connect();
        mLocationRequest = LocationRequest.create()
                .setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY)
                .setInterval(10 * 1000)        
                .setFastestInterval(1 * 1000); 
        /* Rest functionality */
    }

onConnected功能

@Override
    public void onConnected(Bundle bundle) {
        try{
        Location location = LocationServices.FusedLocationApi.getLastLocation(mGoogleApiClient);
        LatLng loc = new LatLng(21.356993, 72.826647);
        if (location == null) {
            Log.d(TAG,"location is again null");
            LocationServices.FusedLocationApi.requestLocationUpdates(mGoogleApiClient, mLocationRequest, this);
            Log.d(TAG, "Requested for updates");
        }
        else {
            loc = new LatLng(location.getLatitude(),location.getLongitude());
            handleNewLocation(location);
        }            
        } catch (Exception e) {
            Log.d(TAG, "Error in onConnected.  "+e.getMessage());

        }
    }

日志：

XXXX: Error in onConnected.  Client must have ACCESS_COARSE_LOCATION or ACCESS_FINE_LOCATION permission to perform any location operations.

build.gradle文件中的依赖项：

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:appcompat-v7:23.1.0'
    compile 'com.google.android.gms:play-services:8.1.0'
    compile 'com.google.android.gms:play-services-location:8.1.0'
}