设备策略管理员无法检索设备策略

我正试图让设备策略管理器工作，但当我试图启用它时，我会卡住。在谷歌上搜索了很多次，已经开始对这个错误进行攻击了:

10-05 10:39:07.147: WARN/DeviceAdminAdd(144): Unable to retrieve device policy ComponentInfo{test.devadmin/test.devadmin.DeviceAdmin$MyDeviceAdminReceiver}
   10-05 10:39:07.147: WARN/DeviceAdminAdd(144): android.content.pm.PackageManager$NameNotFoundException: ComponentInfo{test.devadmin/test.devadmin.DeviceAdmin$MyDeviceAdminReceiver}

清单:

<application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".DeviceAdmin" android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>     
<activity android:name=".app.DeviceAdmin$Controller"
  android:label="@string/activity_sample_device_admin">
     <intent-filter>
         <action android:name="android.intent.action.MAIN" />
         <category android:name="android.intent.category.SAMPLE_CODE" />
     </intent-filter>
</activity> 
<receiver android:name="MyDeviceAdminReceiver"
      android:label="@string/app_label"
      android:permission="android.permission.BIND_DEVICE_ADMIN">
    <meta-data android:name="android.app.device_admin"
           android:resource="@xml/device_admin" />
        <intent-filter>
           <action android:name="android.app.action.DEVICE_ADMIN_ENABLED" />
        </intent-filter>
  </receiver>
</application>
</manifest>

device_admin.xml

<device-admin xmlns:android="http://schemas.android.com/apk/res/android">
  <uses-policies>
   <limit-password />
   <watch-login />
   <reset-password />
   <force-lock />
   <wipe-data />
  </uses-policies>
</device-admin>

支持方法

    public void enable() {
    if (!mDPM.isAdminActive(mDeviceAdmin)) {
        Intent intent = new Intent(
                DevicePolicyManager.ACTION_ADD_DEVICE_ADMIN);
        intent.putExtra(DevicePolicyManager.EXTRA_DEVICE_ADMIN,
                mDeviceAdmin);
        intent.putExtra(DevicePolicyManager.EXTRA_ADD_EXPLANATION,
                "Additional text explaining why this needs to be added.");
        startActivityForResult(intent, REQUEST_ENABLE);
    } else {
        mDPM.lockNow();
    }

receiver Class与下面的基本相同:http://developer.android.com/resources/samples/ApiDemos/src/com/example/android/apis/app/DeviceAdminSample.html

http://rootfs.wordpress.com/2010/09/09/android-make-your-application-a-device-administrator/

任何帮助或建议将不胜感激!

核对收款人名称<receiver android:name="MyDeviceAdminReceiver"

我想你忘记在收件人名字前加上.了:

<receiver android:name=".MyDeviceAdminReceiver"

我认为如果您重新检查您的DeviceAdmin java文件，您试图扩展的接收器名称与您在android manifest.xml文件中指定的接收器名称不同。只是一个大胆的猜测，因为您没有显示您的devveadmin java文件

我一直在努力解决这个问题的最后一天…我刚刚遇到了自己的问题。我的问题是在我的componentName我在做构造函数，比如:

val adminName = ComponentName(this, ::DeviceAdminReceiver.javaClass)

，最后注意到我收到了一个关于公共构造函数的警告PackageManager.NameNotFoundException……快速切换到

val adminName = ComponentName("com.project.myApp", "com.project.myApp.DeviceAdminReceiver")

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