SecurityException：缺少android.permission.INTERACT_ACROSS_USERS进行蓝牙访问

Question

尝试在非系统应用程序上解决此问题：“ BluetoothAdapter :: getProfileProxy”。仅在android 8.1上观察到，但不可重现。

Caused by: java.lang.SecurityException: query intent receivers: Neither user 15010171 nor current process has android.permission.INTERACT_ACROSS_USERS.
at android.os.Parcel.readException(Parcel.java:2021)
at android.os.Parcel.readException(Parcel.java:1967)
at android.content.pm.IPackageManager$Stub$Proxy.queryIntentServices(IPackageManager.java:4830)
at android.app.ApplicationPackageManager.queryIntentServicesAsUser(ApplicationPackageManager.java:1255)
at android.content.Intent.resolveSystemServiceAsUser(Intent.java:8365)
at android.bluetooth.BluetoothA2dp.doBind(BluetoothA2dp.java:432)
at android.bluetooth.BluetoothA2dp.<init>(BluetoothA2dp.java:405)
at android.bluetooth.BluetoothAdapter.getProfileProxy(BluetoothAdapter.java:3034) 

问题：

• 为什么出现此权限“ INTERACT_ACROSS_USERS”。 （我们检查蓝牙许可）

• 根据https://android.googlesource.com/platform/frameworks/base/+/master/core/java/android/bluetooth/BluetoothA2dp.java

  boolean doBind() {
  Intent intent = new Intent(IBluetoothA2dp.class.getName());
  ComponentName comp = intent.resolveSystemService(mContext.getPackageManager(), 0);
  intent.setComponent(comp); ...
  

  权限问题似乎在其他地方-在某些系统服务中。

想知道是否有人可以解释这个问题。