Question

晚上好，我试图在我的deviceadmin应用程序上启动startlocktask。但是当我启动命令devicePolicyManager.SetLockTaskPackages(packageName) my app crash.时我试图发射 devicePolicyManager.IsDeviceOwnerApp(PackageName)但结果是每次都是假的。我可以在配置设备管理员下看到我的应用程序。但我无法启动命令setstatusbar或startlocktask，因为该应用程序似乎没有管理员权限我的代码是：

protected override void OnCreate(Bundle bundle)
        {   DevicePolicyManager devicePolicyManager = (DevicePolicyManager)GetSystemService(Context.DevicePolicyService);
                ComponentName demoDeviceAdmin = new ComponentName(this, Java.Lang.Class.FromType(typeof(DeviceAdmin)));
                Intent intent = new Intent(DevicePolicyManager.ActionAddDeviceAdmin);
                intent.PutExtra(DevicePolicyManager.ExtraDeviceAdmin, demoDeviceAdmin);
                intent.PutExtra(DevicePolicyManager.ExtraAddExplanation, "Device administrator");
                StartActivity(intent);
                string x2 = demoDeviceAdmin.ClassName;
                string x3 = demoDeviceAdmin.ShortClassName;
                //  devicePolicyManager.SetStatusBarDisabled(demoDeviceAdmin, true);
                Toast.MakeText(this, devicePolicyManager.IsDeviceOwnerApp(PackageName).ToString(), ToastLength.Long).Show();
}

我的活动是：

 public class MainActivity : Activity
    {
        [BroadcastReceiver(Permission = "android.permission.BIND_DEVICE_ADMIN")]
        [MetaData("android.app.device_admin", Resource = "@xml/device_admin")]
        [IntentFilter(new[] { "android.app.action.DEVICE_ADMIN_ENABLED", Intent.ActionMain })]
        public class DeviceAdmin : DeviceAdminReceiver
        {

            public override void OnEnabled(Context context, Intent intent)
            {

                base.OnEnabled(context, intent);
                Toast.MakeText(context, "DeviceAdmin", ToastLength.Short).Show();
            }

            public override void OnDisabled(Context context, Intent intent)
            {
                base.OnDisabled(context, intent);
            }

            public override void OnPasswordChanged(Context context, Intent intent)
            {
                base.OnPasswordChanged(context, intent);
            }

            public override void OnPasswordFailed(Context context, Intent intent)
            {
                base.OnPasswordFailed(context, intent);
            }
            public override void OnPasswordSucceeded(Context context, Intent intent)
            {
                base.OnPasswordSucceeded(context, intent);
            }
        }

我的device_admin

<?xml version="1.0" encoding="utf-8"?>
<device-admin xmlns:android="http://schemas.android.com/apk/res/android">
  <uses-policies>
    <limit-password />
    <watch-login />
    <reset-password />
    <force-lock />
    <wipe-data />
    <expire-password />
    <encrypted-storage />
    <disable-camera />
  </uses-policies>
</device-admin>

我的清单是：

<receiver android:permission="android.permission.BIND_DEVICE_ADMIN" android:name="md51e9ac75480e1224184ffdf189ecfeb54.MainActivity_DeviceAdmin">
      <meta-data android:name="android.app.device_admin" android:resource="@xml/device_admin" />
      <intent-filter>
        <action android:name="android.app.action.DEVICE_ADMIN_ENABLED" />
        <action android:name="android.intent.action.MAIN" />
      </intent-filter>
    </receiver>

但没办法..这不起作用。怎么了？有谁可以帮助我吗？谢谢问候安德烈

设备管理员应用程序，startlocktask xamarin

0 个答案: