Question

我正在尝试使用DevicePolicyManager将手机锁定在闹钟接收器中。我只是不能正确的语法，可能做一些愚蠢的事情...有人可以告诉我我的方式错误吗？

由于

public class AlarmReceiver extends BroadcastReceiver {

    String Password = "LOCK";
    String UnlockPassword = "UNLOCK";

    ComponentName mDeviceAdmin;
    private DevicePolicyManager mDPM;


 @Override
 public void onReceive(Context context, Intent intent) {

     gcmaction();

     Intent lockintent = new Intent(context, CurfewSetActivity.class);
     lockintent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
     context.startActivity(intent);

 }

 private void gcmaction() {

      Log.i(TAG,"gcm lock action method started");

它的下两行是错误的（方法getSystemService（String）未定义类型AlarmReceiver）

       mDPM = (DevicePolicyManager) getSystemService(Context.DEVICE_POLICY_SERVICE);
       mDeviceAdmin = new ComponentName(this, AdminReceiver.class);

       boolean active = mDPM.isAdminActive(mDeviceAdmin);
       if (active) {
       mDPM.resetPassword(Password,DevicePolicyManager.RESET_PASSWORD_REQUIRE_ENTRY);
       mDPM.lockNow();



        }
      else Log.i(TAG,"Not an admin");
 }

}

Answer 1

替换

mDPM = (DevicePolicyManager) getSystemService(Context.DEVICE_POLICY_SERVICE);

与

mDPM = (DevicePolicyManager) context.getSystemService(Context.DEVICE_POLICY_SERVICE);

getSystemService是Context类的方法，因此您需要该类的对象才能访问它。

在AlarmReciever中调用DevicePolicyManager

1 个答案: