WiFi P2P是否导致device WiFi自动连接功能不起作用？
WiFi P2P是否导致device WiFi自动连接功能不起作用？
提问于 2020-08-22 11:10:58
我有一个问题，当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)，它每分钟注册和注销一个服务，以重复检测使用WiFi P2P的附近设备。
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自动连接到已知的WiFi网络。你知道怎么解决这个问题吗？下面的代码每分钟注册和注销一次broadcastReceiver，以实现一致的对等检测(这是在onStartCommand函数中运行的)。
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);
}回答 1
Stack Overflow用户
回答已采纳
发布于 2020-08-27 13:54:07
回答我自己的问题。所以manager.discoverPeers就是阻止安卓自动连接到已知的无线网络的原因。我通过将refreshTime()拆分为两个不同的函数修复了这个问题。
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()和onSuccess，它将注销broadcastReceiver。
两者都以两种不同的时间间隔运行。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，并允许操作系统自动连接到已知的Wifi网络。
再来一次。如果有人对此有更优雅的方法，请与我分享。谢谢。
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原文链接：
https://stackoverflow.com/questions/63532216
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