here is my code, it works fine on device realme c12 and discover available devices but fails on realme3i. also suggest me on server and client side connection, how to connect via socket programming.
public class DiscoverActivity extends AppCompatActivity {
LottieAnimationView discoverani;
Handler discoveranimae = new Handler();
WifiP2pManager manager;
WifiP2pManager.Channel channel;
BroadcastReceiver receiver;
CustomAdapterForDiscoveredDevice customAdapterForDiscoveredDevice;
public static ArrayList<WifiP2pDevice> peerslist = new ArrayList<WifiP2pDevice>();
public static String[] devisename;
WifiP2pDevice[] deviceslist;
RecyclerView recyclerView;
IntentFilter intentFilter;
CustomAdapterForDiscoveredDevice.RecycleDeviceonclick listner;
TextView deviceStatus;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_discover);
recyclerView = findViewById(R.id.devicesdiscovered);
deviceStatus = findViewById(R.id.deviceStatus);
deviceStatus.setText("Discovery Started");
discoverani = findViewById(R.id.discoveranimae);
Thread thread1 = new Thread() {
@Override
public void run() {
super.run();
discoveranimae.post(new Runnable() {
@Override
public void run() {
discoverani.playAnimation();
}
});
}
};
thread1.start();
manager = (WifiP2pManager) getSystemService(Context.WIFI_P2P_SERVICE);
channel = manager.initialize(this, getMainLooper(), null);
receiver = new WifiDirectBroadcastReceiver(manager, channel, this);
intentFilter = new IntentFilter();
intentFilter.addAction(WifiP2pManager.WIFI_P2P_STATE_CHANGED_ACTION);
intentFilter.addAction(WifiP2pManager.WIFI_P2P_PEERS_CHANGED_ACTION);
intentFilter.addAction(WifiP2pManager.WIFI_P2P_CONNECTION_CHANGED_ACTION);
intentFilter.addAction(WifiP2pManager.WIFI_P2P_THIS_DEVICE_CHANGED_ACTION);
registerReceiver(receiver, intentFilter);
if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return;
}
manager.discoverPeers(channel, new WifiP2pManager.ActionListener() {
@SuppressLint("MissingPermission")
@Override
public void onSuccess() {
Log.d("Discovery", "Started");
// manager.requestPeers(channel,peerListListener);
}
@Override
public void onFailure(int reason) {
Log.d("Discovery", "Failed");
}
});
}
WifiP2pManager.PeerListListener peerListListener = new WifiP2pManager.PeerListListener() {
@Override
public void onPeersAvailable(WifiP2pDeviceList peers) {
if (!peers.getDeviceList().equals(peerslist)) {
peerslist.clear();
peerslist.addAll(peers.getDeviceList());
devisename = new String[peers.getDeviceList().size()];
deviceslist = new WifiP2pDevice[peers.getDeviceList().size()];
int index = 0;
for (WifiP2pDevice device : peers.getDeviceList()) {
devisename[index] = device.deviceName;
deviceslist[index] = device;
index++;
}
setOnClicklistner();
customAdapterForDiscoveredDevice = new CustomAdapterForDiscoveredDevice(DiscoverActivity.this, listner);
StaggeredGridLayoutManager staggeredGridLayoutManager = new StaggeredGridLayoutManager(2, StaggeredGridLayoutManager.VERTICAL);
recyclerView.setLayoutManager(staggeredGridLayoutManager);
recyclerView.setAdapter(customAdapterForDiscoveredDevice);
Log.d("number of device found", String.valueOf(devisename.length));
}
if (peerslist.size() == 0) {
Toast.makeText(getApplicationContext(), "No Device Found", Toast.LENGTH_LONG).show();
return;
}
}
};
private void setOnClicklistner() {
listner = new CustomAdapterForDiscoveredDevice.RecycleDeviceonclick() {
@Override
public void Onclick(View itemView, final int adapterPosition) {
Toast.makeText(getApplicationContext(), devisename[adapterPosition], Toast.LENGTH_SHORT).show();
WifiP2pDevice device = deviceslist[adapterPosition];
WifiP2pConfig config = new WifiP2pConfig();
config.deviceAddress = device.deviceAddress;
if (ActivityCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
// TODO: Consider calling
// ActivityCompat#requestPermissions
// here to request the missing permissions, and then overriding
// public void onRequestPermissionsResult(int requestCode, String[] permissions,
// int[] grantResults)
// to handle the case where the user grants the permission. See the documentation
// for ActivityCompat#requestPermissions for more details.
return;
}
manager.connect(channel, config, new WifiP2pManager.ActionListener() {
@Override
public void onSuccess() {
Toast.makeText(getApplicationContext(),"connected to"+devisename[adapterPosition],Toast.LENGTH_SHORT).show();
}
@Override
public void onFailure(int reason) {
Toast.makeText(getApplicationContext(),"failed to connected to"+devisename[adapterPosition],Toast.LENGTH_SHORT).show();
}
});
}
};
}
WifiP2pManager.ConnectionInfoListener connectionInfoListener=new WifiP2pManager.ConnectionInfoListener() {
@Override
public void onConnectionInfoAvailable(WifiP2pInfo info) {
final InetAddress inetAddress=info.groupOwnerAddress;
if(info.groupFormed && info.isGroupOwner){
deviceStatus.setText("Host");
}
else if(info.groupFormed){
deviceStatus.setText("Client");
}
}
};
@Override
protected void onResume() {
super.onResume();
registerReceiver(receiver,intentFilter);
}
@Override
protected void onPause() {
super.onPause();
unregisterReceiver(receiver);
}
}
I hope I have provided enough details and please do suggest. why on some specific device it fails, I tried to get to know from logcat but their was not any details
question from:
https://stackoverflow.com/questions/65905490/discovering-peers-for-p2p-connections-failed-on-some-devices-how-on-some-device 与恶龙缠斗过久,自身亦成为恶龙；凝视深渊过久,深渊将回以凝视…
