WiFi P2P 导致设备 WiFi 自动连接功能不起作用？

Question

我遇到一个问题，我的设备在范围内时停止自动连接到 WiFi 网络。我的应用程序有一个在后台运行的服务（即使应用程序被终止）每分钟注册和取消注册服务以使用 WiFi P2P 重复检测附近的设备。

 private final BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            String action = intent.getAction();
            if (WifiP2pManager.WIFI_P2P_STATE_CHANGED_ACTION.equals(action)) {
                int state = intent.getIntExtra(WifiP2pManager.EXTRA_WIFI_STATE, -1);
                if (state == WifiP2pManager.WIFI_P2P_STATE_ENABLED) {
                    Log.d(TAG, "WiFi P2P Enabled");
                    if (ActivityCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
                        return;
                    }
                    manager.discoverPeers(channel, new WifiP2pManager.ActionListener() {
                        @Override
                        public void onSuccess() {
                            Log.d(TAG, "Discover Peers Successful");
                        }

                        @Override
                        public void onFailure(int i) {
                            Log.d(TAG, "Discover Peers Unsuccessful");
                        }
                    });
                } else {
                    Log.d(TAG, "WiFi P2P Disabled");
                }
                // Check to see if Wi-Fi is enabled and notify appropriate activity
            } else if (WifiP2pManager.WIFI_P2P_PEERS_CHANGED_ACTION.equals(action)) {
                Log.d(TAG, "Peers detected");
                if (manager != null) {
                    if (ActivityCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
                        return;
                    }
                    Log.d(TAG, "Peers Requested");
                    manager.requestPeers(channel, peerListListener);
                }
                // Call WifiP2pManager.requestPeers() to get a list of current peers
            } else if (WifiP2pManager.WIFI_P2P_CONNECTION_CHANGED_ACTION.equals(action)) {
                Log.d(TAG, "Connection Changed");
                // Respond to new connection or disconnections
            } else if (WifiP2pManager.WIFI_P2P_THIS_DEVICE_CHANGED_ACTION.equals(action)) {
                Log.d(TAG, "WiFi P2P State Changed");
                // Respond to this device's wifi state changing
            }
        }
    };

 WifiP2pManager.PeerListListener peerListListener = new WifiP2pManager.PeerListListener() {
        @Override
        public void onPeersAvailable(WifiP2pDeviceList wifiP2pDeviceList) {
            Log.d(TAG, "Peers available");
            String deviceEncrypt = "";

            if (!wifiP2pDeviceList.getDeviceList().equals(peers)) {
                peers.clear();
                peers.addAll(wifiP2pDeviceList.getDeviceList());

                deviceNameArray = new String[wifiP2pDeviceList.getDeviceList().size()];
                deviceArray = new WifiP2pDevice[wifiP2pDeviceList.getDeviceList().size()];
                int index = 0;

                for (WifiP2pDevice device : wifiP2pDeviceList.getDeviceList()) {
                    deviceNameArray[index] = device.deviceName;
                    deviceArray[index] = device;
                    index++;

                    try {
                        deviceEncrypt = AESUtils.encrypt(device.deviceAddress);
                        Log.d(TAG, "Encrypted MAC Address discovered: " + deviceEncrypt);
                    } catch (Exception e) {
                        e.printStackTrace();
                    }
                }
            } else {
                Log.d(TAG, "No peers found");
            }
        }
    };

我意识到这会阻止设备在范围内时自动连接到已知的 WiFi 网络。知道如何解决这个问题吗？下面的代码每分钟注册和取消注册 broadcastReceiver 以实现一致的对等检测（这是 onStartCommand 函数中的运行）。

private void refreshTime() {
        handler.postDelayed(runnable = new Runnable() {
            @Override
            public void run() {
                Log.d(TAG, "Refreshed");
                registerReceiver(broadcastReceiver, intentFilter);
                unregisterReceiver(broadcastReceiver);
                registerReceiver(broadcastReceiver, intentFilter);
                handler.postDelayed(runnable, delay);
            }
        }, delay);
    }

Answer 1

回答我自己的问题。所以 manager.discoverPeers 是阻止 Android 从 auto-connecting 连接到已知 Wifi 网络的原因。我通过将 refreshTime() 拆分为两个不同的函数来解决此问题。

private void refreshTime() {
        refreshHandler.postDelayed(refreshRunnable = new Runnable() {
            @Override
            public void run() {
                Log.d(TAG, "Refreshed Registered");
                registerReceiver(broadcastReceiver, intentFilter);
                refreshHandler.postDelayed(refreshRunnable, refreshDelay);
            }
        }, refreshDelay);
    }

private void stopDiscovery() {
        peerHandler.postDelayed(peerRunnable = new Runnable() {
            @Override
            public void run() {
                manager.stopPeerDiscovery(channel, new WifiP2pManager.ActionListener() {
                    @Override
                    public void onSuccess() {
                        Log.d(TAG, "Peer Discovery Stopped");
                        try {
                            unregisterReceiver(broadcastReceiver);
                            Log.d(TAG, "Refreshed Unregistered");
                        } catch (IllegalArgumentException e) {
                            Log.e(TAG, e.toString());
                        }
                    }

                    @Override
                    public void onFailure(int i) {
                        Log.d(TAG, "Peer Discovery Failed to Stop");
                    }
                });
                peerHandler.postDelayed(peerRunnable, peerDelay);
            }
        }, peerDelay);
    }

stopDiscovery() 调用 manager.stopPeerDiscovery() 并且 onSuccess 它将取消注册 broadcastReceiver。

两者都是运行在两个不同的时间间隔。 refreshTime() 每 1 分钟运行一次，而 stopDiscovery() 每 2 分钟运行一次。这会使 discoverPeers() 停止大约一分钟，并允许 OS 到 auto-connect 到已知的 Wifi 网络。

再次。如果有人对此有更优雅的方法，请与我分享。谢谢

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