Android 10 如何去掉手机端连接设备蓝牙的配对框

现象：

代码路径：
packages/apps/Settings/src/com/android/settings/bluetooth/BluetoothPairingRequest.java
packages/apps/Settings/src/com/android/settings/bluetooth/BluetoothPairingDialog.java
packages/apps/Settings/src/com/android/settings/bluetooth/BluetoothPairingDialogFragment.java
在代码中BluetoothPairingRequest.java文件中，手机端连接蓝牙后会发送该广播ACTION_PAIRING_REQUEST出去，shouldShowDialog该变量来控制是否显示配对请求对话框

@Override
public void onReceive(Context context, Intent intent) {
  String action = intent.getAction();
  // SPRD:bug#785347 action may be null
  if (!BluetoothDevice.ACTION_PAIRING_REQUEST.equals(action)) {
    return;
  }
  // convert broadcast intent into activity intent (same action string)
  Intent pairingIntent = BluetoothPairingService.getPairingDialogIntent(context, intent);

  PowerManager powerManager =
      (PowerManager)context.getSystemService(Context.POWER_SERVICE);
  BluetoothDevice device =
      intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
  String deviceAddress = device != null ? device.getAddress() : null;
  String deviceName = device != null ? device.getName() : null;
  boolean shouldShowDialog = LocalBluetoothPreferences.shouldShowDialogInForeground(
      context, deviceAddress, deviceName);
  if (powerManager.isInteractive() && shouldShowDialog) {
    // Since the screen is on and the BT-related activity is in the foreground,
    // just open the dialog
    context.startActivityAsUser(pairingIntent, UserHandle.CURRENT);
  } else {
    // Put up a notification that leads to the dialog
    intent.setClass(context, BluetoothPairingService.class);
    context.startServiceAsUser(intent, UserHandle.CURRENT);
  }
}