| /* |
| * Copyright (C) 2017 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.car.settings.bluetooth; |
| |
| import android.annotation.Nullable; |
| import android.bluetooth.BluetoothDevice; |
| import android.content.BroadcastReceiver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.os.Bundle; |
| |
| import androidx.annotation.VisibleForTesting; |
| import androidx.fragment.app.FragmentActivity; |
| |
| /** |
| * BluetoothPairingDialog asks the user to enter a PIN / Passkey / simple confirmation |
| * for pairing with a remote Bluetooth device. It is an activity that appears as a dialog. |
| */ |
| public class BluetoothPairingDialog extends FragmentActivity { |
| public static final String FRAGMENT_TAG = "bluetooth.pairing.fragment"; |
| |
| private BluetoothPairingController mBluetoothPairingController; |
| private boolean mReceiverRegistered = false; |
| |
| /** |
| * Dismiss the dialog if the bond state changes to bonded or none, |
| * or if pairing was canceled for {@link BluetoothPairingController#mDevice}. |
| */ |
| private final BroadcastReceiver mReceiver = new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| String action = intent.getAction(); |
| if (BluetoothDevice.ACTION_BOND_STATE_CHANGED.equals(action)) { |
| int bondState = intent.getIntExtra(BluetoothDevice.EXTRA_BOND_STATE, |
| BluetoothDevice.ERROR); |
| if (bondState == BluetoothDevice.BOND_BONDED || |
| bondState == BluetoothDevice.BOND_NONE) { |
| dismiss(); |
| } |
| } else if (BluetoothDevice.ACTION_PAIRING_CANCEL.equals(action)) { |
| BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE); |
| if (device == null || mBluetoothPairingController.deviceEquals(device)) { |
| dismiss(); |
| } |
| } |
| } |
| }; |
| |
| @Override |
| protected void onCreate(@Nullable Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| Intent intent = getIntent(); |
| mBluetoothPairingController = new BluetoothPairingController(intent, this); |
| // build the dialog fragment |
| boolean fragmentFound = true; |
| // check if the fragment has been preloaded |
| BluetoothPairingDialogFragment bluetoothFragment = |
| (BluetoothPairingDialogFragment) getSupportFragmentManager().findFragmentByTag( |
| FRAGMENT_TAG); |
| // dismiss the fragment if it is already used |
| if (bluetoothFragment != null && (bluetoothFragment.isPairingControllerSet() |
| || bluetoothFragment.isPairingDialogActivitySet())) { |
| bluetoothFragment.dismiss(); |
| bluetoothFragment = null; |
| } |
| // build a new fragment if it is null |
| if (bluetoothFragment == null) { |
| fragmentFound = false; |
| bluetoothFragment = new BluetoothPairingDialogFragment(); |
| } |
| bluetoothFragment.setPairingController(mBluetoothPairingController); |
| bluetoothFragment.setPairingDialogActivity(this); |
| // pass the fragment to the manager when it is created from scratch |
| if (!fragmentFound) { |
| bluetoothFragment.show(getSupportFragmentManager(), FRAGMENT_TAG); |
| } |
| /* |
| * Leave this registered through pause/resume since we still want to |
| * finish the activity in the background if pairing is canceled. |
| */ |
| registerReceiver(mReceiver, new IntentFilter(BluetoothDevice.ACTION_PAIRING_CANCEL)); |
| registerReceiver(mReceiver, new IntentFilter(BluetoothDevice.ACTION_BOND_STATE_CHANGED)); |
| mReceiverRegistered = true; |
| } |
| |
| @Override |
| protected void onDestroy() { |
| super.onDestroy(); |
| if (mReceiverRegistered) { |
| mReceiverRegistered = false; |
| unregisterReceiver(mReceiver); |
| } |
| } |
| |
| @VisibleForTesting |
| void dismiss() { |
| if (!isFinishing()) { |
| finish(); |
| } |
| } |
| } |