wip

app/build.gradle

@@ -127,6 +127,8 @@ dependencies {
 
     implementation "ru.noties.markwon:core:3.1.0"
 
+    implementation "com.skyfishjy.ripplebackground:library:1.0.1"
+
     implementation "org.jsoup:jsoup:1.14.3"
 
     implementation "xyz.quaver:documentfilex:0.7.2"

app/src/main/AndroidManifest.xml

@@ -13,6 +13,12 @@
     <uses-permission android:name="android.permission.VIBRATE"/>
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE_SPECIAL_USE"/>
     <uses-permission android:name="android.permission.POST_NOTIFICATIONS"/>
+    <uses-permission android:name="android.permission.NEARBY_WIFI_DEVICES" android:usesPermissionFlags="neverForLocation"
+        tools:targetApi="s" />
+    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" android:maxSdkVersion="32"
+        tools:ignore="CoarseFineLocation" />
+    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
+    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
 
     <uses-feature android:name="android.hardware.camera" android:required="false" />
     <uses-feature android:name="android.hardware.camera.autofocus" android:required="false" />
@@ -179,6 +185,7 @@
             </intent-filter>
         </activity>
         <activity android:name="net.rdrei.android.dirchooser.DirectoryChooserActivity" />
+        <activity android:name=".ui.TransferActivity" />
     </application>
 
 </manifest>

app/src/main/java/xyz/quaver/pupil/adapters/TransferPeersAdapter.kt

@@ -0,0 +1,44 @@
+package xyz.quaver.pupil.adapters
+
+import android.net.wifi.p2p.WifiP2pDevice
+import android.net.wifi.p2p.WifiP2pDeviceList
+import android.util.Log
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.BaseAdapter
+import androidx.recyclerview.widget.RecyclerView
+import xyz.quaver.pupil.R
+import xyz.quaver.pupil.databinding.TransferPeerListItemBinding
+
+class TransferPeersAdapter(
+    private val devices: Collection<WifiP2pDevice>,
+    private val onDeviceSelected: (WifiP2pDevice) -> Unit
+): RecyclerView.Adapter<TransferPeersAdapter.ViewHolder>() {
+
+    class ViewHolder(val binding: TransferPeerListItemBinding): RecyclerView.ViewHolder(binding.root)
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
+        val binding = TransferPeerListItemBinding.inflate(
+            LayoutInflater.from(parent.context),
+            parent,
+            false
+        )
+        return ViewHolder(binding)
+    }
+
+    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
+        val device = devices.elementAt(position)
+
+        holder.binding.deviceName.text = device.deviceName
+        holder.binding.deviceAddress.text = device.deviceAddress
+
+        holder.binding.root.setOnClickListener {
+            onDeviceSelected(device)
+        }
+    }
+
+    override fun getItemCount(): Int {
+        return devices.size
+    }
+}

app/src/main/java/xyz/quaver/pupil/receiver/WifiDirectBroadcastReceiver.kt

@@ -0,0 +1,59 @@
+package xyz.quaver.pupil.receiver
+
+import android.Manifest
+import android.annotation.SuppressLint
+import android.content.BroadcastReceiver
+import android.content.Context
+import android.content.Intent
+import android.content.pm.PackageManager
+import android.net.wifi.p2p.WifiP2pManager
+import android.os.Build
+import android.os.Parcelable
+import android.util.Log
+import androidx.core.app.ActivityCompat
+import xyz.quaver.pupil.ui.ErrorType
+import xyz.quaver.pupil.ui.TransferStep
+import xyz.quaver.pupil.ui.TransferViewModel
+
+private inline fun <reified T : Parcelable> Intent.getParcelableExtraCompat(key: String): T? = when {
+    Build.VERSION.SDK_INT >= 33 -> getParcelableExtra(key, T::class.java)
+    else -> @Suppress("DEPRECATION") getParcelableExtra(key) as? T
+}
+
+class WifiDirectBroadcastReceiver(
+    private val manager: WifiP2pManager,
+    private val channel: WifiP2pManager.Channel,
+    private val viewModel: TransferViewModel
+): BroadcastReceiver() {
+    @SuppressLint("MissingPermission")
+    override fun onReceive(context: Context?, intent: Intent?) {
+        context!!
+        when (intent?.action) {
+            WifiP2pManager.WIFI_P2P_STATE_CHANGED_ACTION -> {
+                val state = intent.getIntExtra(WifiP2pManager.EXTRA_WIFI_STATE, -1)
+                viewModel.setWifiP2pEnabled(state == WifiP2pManager.WIFI_P2P_STATE_ENABLED)
+            }
+            WifiP2pManager.WIFI_P2P_PEERS_CHANGED_ACTION -> {
+                manager.requestPeers(channel) { peers ->
+                    viewModel.setPeers(peers)
+                }
+            }
+            WifiP2pManager.WIFI_P2P_CONNECTION_CHANGED_ACTION -> {
+                // Respond to new connection or disconnections
+                val networkInfo = intent.getParcelableExtraCompat<android.net.NetworkInfo>(WifiP2pManager.EXTRA_NETWORK_INFO)
+
+                if (networkInfo?.isConnected == true) {
+                    manager.requestConnectionInfo(channel) { info ->
+                        viewModel.setConnectionInfo(info)
+                    }
+                } else {
+                    viewModel.setConnectionInfo(null)
+                }
+            }
+            WifiP2pManager.WIFI_P2P_THIS_DEVICE_CHANGED_ACTION -> {
+                // Respond to this device's wifi state changing
+                viewModel.setThisDevice(intent.getParcelableExtraCompat(WifiP2pManager.EXTRA_WIFI_P2P_DEVICE))
+            }
+        }
+    }
+}

app/src/main/java/xyz/quaver/pupil/ui/TransferActivity.kt

@@ -0,0 +1,294 @@
+package xyz.quaver.pupil.ui
+
+import android.Manifest
+import android.annotation.SuppressLint
+import android.content.BroadcastReceiver
+import android.content.IntentFilter
+import android.content.pm.ActivityInfo
+import android.content.pm.PackageManager
+import android.net.wifi.WpsInfo
+import android.net.wifi.p2p.WifiP2pConfig
+import android.net.wifi.p2p.WifiP2pDevice
+import android.net.wifi.p2p.WifiP2pDeviceList
+import android.net.wifi.p2p.WifiP2pInfo
+import android.net.wifi.p2p.WifiP2pManager
+import android.os.Build.VERSION
+import android.os.Build.VERSION_CODES
+import android.os.Bundle
+import android.util.Log
+import androidx.activity.result.contract.ActivityResultContracts
+import androidx.activity.viewModels
+import androidx.appcompat.app.AppCompatActivity
+import androidx.core.app.ActivityCompat
+import androidx.fragment.app.commit
+import androidx.lifecycle.Lifecycle
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.flowWithLifecycle
+import androidx.lifecycle.lifecycleScope
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.launch
+import xyz.quaver.pupil.R
+import xyz.quaver.pupil.receiver.WifiDirectBroadcastReceiver
+import xyz.quaver.pupil.ui.fragment.TransferDirectionFragment
+import xyz.quaver.pupil.ui.fragment.TransferPermissionFragment
+import xyz.quaver.pupil.ui.fragment.TransferTargetFragment
+import xyz.quaver.pupil.ui.fragment.TransferWaitForConnectionFragment
+import kotlin.coroutines.resume
+import kotlin.coroutines.resumeWithException
+import kotlin.coroutines.suspendCoroutine
+
+class TransferActivity : AppCompatActivity(R.layout.transfer_activity) {
+
+    private val viewModel: TransferViewModel by viewModels()
+
+    private val intentFilter = IntentFilter().apply {
+        addAction(WifiP2pManager.WIFI_P2P_STATE_CHANGED_ACTION)
+        addAction(WifiP2pManager.WIFI_P2P_PEERS_CHANGED_ACTION)
+        addAction(WifiP2pManager.WIFI_P2P_CONNECTION_CHANGED_ACTION)
+        addAction(WifiP2pManager.WIFI_P2P_THIS_DEVICE_CHANGED_ACTION)
+    }
+
+    private lateinit var manager: WifiP2pManager
+    private lateinit var channel: WifiP2pManager.Channel
+
+    private var receiver: BroadcastReceiver? = null
+
+    private val requestPermissionLauncher = registerForActivityResult(
+        ActivityResultContracts.RequestPermission()
+    ) { granted ->
+        if (granted) {
+            viewModel.setStep(TransferStep.TARGET)
+        } else {
+            viewModel.setStep(TransferStep.PERMISSION)
+        }
+    }
+
+    private fun checkPermission(force: Boolean = false): Boolean {
+        val permissionRequired = if (VERSION.SDK_INT < VERSION_CODES.TIRAMISU) {
+            Manifest.permission.ACCESS_FINE_LOCATION
+        } else {
+            Manifest.permission.NEARBY_WIFI_DEVICES
+        }
+
+        val permissionGranted =
+            ActivityCompat.checkSelfPermission(this, permissionRequired) == PackageManager.PERMISSION_GRANTED
+
+        val shouldShowRationale =
+            ActivityCompat.shouldShowRequestPermissionRationale(this, permissionRequired)
+
+        if (!permissionGranted) {
+            if (shouldShowRationale && force) {
+                viewModel.setStep(TransferStep.PERMISSION)
+            } else {
+                requestPermissionLauncher.launch(permissionRequired)
+            }
+            return false
+        }
+
+        return true
+    }
+
+    @SuppressLint("SourceLockedOrientationActivity")
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        supportActionBar?.hide()
+        requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT
+
+        manager = getSystemService(WIFI_P2P_SERVICE) as WifiP2pManager
+        channel = manager.initialize(this, mainLooper, null)
+
+        viewModel.peerToConnect.observe(this) { peer ->
+            if (peer == null) { return@observe }
+            if (!checkPermission()) { return@observe }
+
+            val config = WifiP2pConfig().apply {
+                deviceAddress = peer.deviceAddress
+                wps.setup = WpsInfo.PBC
+            }
+
+            manager.connect(channel, config, object: WifiP2pManager.ActionListener {
+                override fun onSuccess() {
+                    Log.d("PUPILD", "Connection successful")
+                }
+
+                override fun onFailure(reason: Int) {
+                    Log.d("PUPILD", "Connection failed: $reason")
+                    viewModel.setPeers(null)
+                }
+            })
+        }
+
+        viewModel.connectionInfo.observe(this) { info ->
+            if (info == null) { return@observe }
+
+            if (info.groupFormed && info.isGroupOwner) {
+                // Do something
+                Log.d("PUPILD", "Group formed and is group owner")
+                Log.d("PUPILD", "Group owner IP: ${info.groupOwnerAddress.hostAddress}")
+            } else if (info.groupFormed) {
+                // Do something
+                Log.d("PUPILD", "Group formed")
+                Log.d("PUPILD", "Group owner IP: ${info.groupOwnerAddress.hostAddress}")
+                Log.d("PUPILD", "Local IP: ${info.groupOwnerAddress.hostAddress}")
+                Log.d("PUPILD", "Is group owner: ${info.isGroupOwner}")
+            }
+        }
+
+        lifecycleScope.launch {
+            viewModel.step.flowWithLifecycle(lifecycle, Lifecycle.State.STARTED).collect { step ->
+                when (step) {
+                    TransferStep.TARGET,
+                    TransferStep.TARGET_FORCE -> {
+                        if (!checkPermission(step == TransferStep.TARGET_FORCE)) {
+                            return@collect
+                        }
+
+                        manager.discoverPeers(channel, object: WifiP2pManager.ActionListener {
+                            override fun onSuccess() { }
+
+                            override fun onFailure(reason: Int) {
+                            }
+                        })
+
+                        supportFragmentManager.commit {
+                            replace(R.id.fragment_container_view, TransferTargetFragment())
+                        }
+                    }
+                    TransferStep.DIRECTION -> {
+                        supportFragmentManager.commit {
+                            replace(R.id.fragment_container_view, TransferDirectionFragment())
+                        }
+                    }
+                    TransferStep.PERMISSION -> {
+                        supportFragmentManager.commit {
+                            replace(R.id.fragment_container_view, TransferPermissionFragment())
+                        }
+                    }
+                    TransferStep.WAIT_FOR_CONNECTION -> {
+                        if (!checkPermission()) { return@collect }
+
+                        runCatching {
+                            suspendCoroutine { continuation ->
+                                manager.removeGroup(channel, object: WifiP2pManager.ActionListener {
+                                    override fun onSuccess() {
+                                        continuation.resume(Unit)
+                                    }
+
+                                    override fun onFailure(reason: Int) {
+                                        continuation.resume(Unit)
+                                    }
+                                })
+                            }
+
+                            suspendCoroutine { continuation ->
+                                manager.cancelConnect(channel, object: WifiP2pManager.ActionListener {
+                                    override fun onSuccess() {
+                                        continuation.resume(Unit)
+                                    }
+
+                                    override fun onFailure(reason: Int) {
+                                        continuation.resume(Unit)
+                                    }
+                                })
+                            }
+
+                            suspendCoroutine { continuation ->
+                                manager.createGroup(channel, object: WifiP2pManager.ActionListener {
+                                    override fun onSuccess() {
+                                        continuation.resume(Unit)
+                                    }
+
+                                    override fun onFailure(reason: Int) {
+                                        continuation.resumeWithException(Exception("Failed to create group $reason"))
+                                    }
+                                })
+                            }
+                        }.onFailure {
+                            Log.e("PUPILD", "Failed to create group", it)
+                        }
+
+                        supportFragmentManager.commit {
+                            replace(R.id.fragment_container_view, TransferWaitForConnectionFragment())
+                        }
+                    }
+                }
+            }
+        }
+
+    }
+
+    override fun onResume() {
+        super.onResume()
+        WifiDirectBroadcastReceiver(manager, channel, viewModel).also {
+            receiver = it
+            registerReceiver(it, intentFilter)
+        }
+    }
+
+    override fun onPause() {
+        super.onPause()
+        receiver?.let { unregisterReceiver(it) }
+        receiver = null
+    }
+}
+
+enum class TransferStep {
+    TARGET, TARGET_FORCE, DIRECTION, PERMISSION, WAIT_FOR_CONNECTION
+}
+
+enum class ErrorType {
+}
+
+class TransferViewModel : ViewModel() {
+    private val _step: MutableStateFlow<TransferStep> = MutableStateFlow(TransferStep.DIRECTION)
+    val step: StateFlow<TransferStep> = _step
+
+    private val _error = MutableLiveData<ErrorType?>(null)
+    val error: LiveData<ErrorType?> = _error
+
+    private val _wifiP2pEnabled: MutableLiveData<Boolean> = MutableLiveData(false)
+    val wifiP2pEnabled: LiveData<Boolean> = _wifiP2pEnabled
+
+    private val _thisDevice: MutableLiveData<WifiP2pDevice?> = MutableLiveData(null)
+    val thisDevice: LiveData<WifiP2pDevice?> = _thisDevice
+
+    private val _peers: MutableLiveData<WifiP2pDeviceList?> = MutableLiveData(null)
+    val peers: LiveData<WifiP2pDeviceList?> = _peers
+
+    private val _connectionInfo: MutableLiveData<WifiP2pInfo?> = MutableLiveData(null)
+    val connectionInfo: LiveData<WifiP2pInfo?> = _connectionInfo
+
+    private val _peerToConnect: MutableLiveData<WifiP2pDevice?> = MutableLiveData(null)
+    val peerToConnect: LiveData<WifiP2pDevice?> = _peerToConnect
+
+    fun setStep(step: TransferStep) {
+        _step.value = step
+    }
+
+    fun setWifiP2pEnabled(enabled: Boolean) {
+        _wifiP2pEnabled.value = enabled
+    }
+
+    fun setThisDevice(device: WifiP2pDevice?) {
+        _thisDevice.value = device
+    }
+
+    fun setPeers(peers: WifiP2pDeviceList?) {
+        _peers.value = peers
+    }
+
+    fun setConnectionInfo(info: WifiP2pInfo?) {
+        _connectionInfo.value = info
+    }
+
+    fun setError(error: ErrorType?) {
+        _error.value = error
+    }
+
+    fun connect(device: WifiP2pDevice) {
+        _peerToConnect.value = device
+    }
+}

app/src/main/java/xyz/quaver/pupil/ui/fragment/SettingsFragment.kt

@@ -21,12 +21,14 @@ package xyz.quaver.pupil.ui.fragment
 import android.app.Activity
 import android.content.*
 import android.os.Bundle
+import android.util.Log
 import android.widget.Toast
 import androidx.activity.result.contract.ActivityResultContracts
 import androidx.appcompat.app.AppCompatDelegate
 import androidx.preference.*
 import com.google.android.gms.oss.licenses.OssLicensesMenuActivity
 import com.google.firebase.crashlytics.FirebaseCrashlytics
+import com.google.firebase.crashlytics.internal.model.CrashlyticsReport
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
@@ -40,6 +42,7 @@ import xyz.quaver.pupil.clientHolder
 import xyz.quaver.pupil.types.SendLogException
 import xyz.quaver.pupil.ui.LockActivity
 import xyz.quaver.pupil.ui.SettingsActivity
+import xyz.quaver.pupil.ui.TransferActivity
 import xyz.quaver.pupil.ui.dialog.*
 import xyz.quaver.pupil.util.*
 import xyz.quaver.pupil.util.downloader.DownloadManager
@@ -113,6 +116,9 @@ class SettingsFragment :
                     )
                     Toast.makeText(context, R.string.copied_to_clipboard, Toast.LENGTH_SHORT).show()
                 }
+                "transfer_data" -> {
+                    activity?.startActivity(Intent(activity, TransferActivity::class.java))
+                }
                 else -> return false
             }
         }
@@ -300,6 +306,9 @@ class SettingsFragment :
                                 true
                             }
                         }
+                        "transfer_data" -> {
+                            onPreferenceClickListener = this@SettingsFragment
+                        }
                     }
 
                 }

app/src/main/java/xyz/quaver/pupil/ui/fragment/TransferDirectionFragment.kt

@@ -0,0 +1,44 @@
+package xyz.quaver.pupil.ui.fragment
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.activityViewModels
+import xyz.quaver.pupil.R
+import xyz.quaver.pupil.databinding.TransferDirectionFragmentBinding
+import xyz.quaver.pupil.ui.TransferStep
+import xyz.quaver.pupil.ui.TransferViewModel
+
+class TransferDirectionFragment : Fragment(R.layout.transfer_direction_fragment) {
+
+    private var _binding: TransferDirectionFragmentBinding? = null
+    private val binding get() = _binding!!
+
+    private val viewModel: TransferViewModel by activityViewModels()
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View {
+        _binding = TransferDirectionFragmentBinding.inflate(inflater, container, false)
+
+        binding.inButton.setOnClickListener {
+            viewModel.setStep(TransferStep.TARGET)
+        }
+
+        binding.outButton.setOnClickListener {
+            viewModel.setStep(TransferStep.WAIT_FOR_CONNECTION)
+        }
+
+        return binding.root
+    }
+
+    override fun onDestroyView() {
+        super.onDestroyView()
+        _binding = null
+    }
+
+}

app/src/main/java/xyz/quaver/pupil/ui/fragment/TransferPermissionFragment.kt

@@ -0,0 +1,38 @@
+package xyz.quaver.pupil.ui.fragment
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.activityViewModels
+import xyz.quaver.pupil.databinding.TransferPermissionFragmentBinding
+import xyz.quaver.pupil.ui.TransferStep
+import xyz.quaver.pupil.ui.TransferViewModel
+
+class TransferPermissionFragment: Fragment() {
+
+    private var _binding: TransferPermissionFragmentBinding? = null
+    private val binding get() = _binding!!
+
+    private val viewModel: TransferViewModel by activityViewModels()
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View {
+        _binding = TransferPermissionFragmentBinding.inflate(inflater, container, false)
+
+        binding.permissionsButton.setOnClickListener {
+            viewModel.setStep(TransferStep.TARGET_FORCE)
+        }
+
+        return binding.root
+    }
+
+    override fun onDestroyView() {
+        super.onDestroyView()
+        _binding = null
+    }
+}

app/src/main/java/xyz/quaver/pupil/ui/fragment/TransferTargetFragment.kt

@@ -0,0 +1,69 @@
+package xyz.quaver.pupil.ui.fragment
+
+import android.os.Bundle
+import android.util.Log
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.ArrayAdapter
+import androidx.fragment.app.Fragment
+import androidx.fragment.app.activityViewModels
+import xyz.quaver.pupil.R
+import xyz.quaver.pupil.adapters.TransferPeersAdapter
+import xyz.quaver.pupil.databinding.TransferTargetFragmentBinding
+import xyz.quaver.pupil.ui.TransferStep
+import xyz.quaver.pupil.ui.TransferViewModel
+
+class TransferTargetFragment : Fragment() {
+
+    private var _binding: TransferTargetFragmentBinding? = null
+    private val binding get() = _binding!!
+
+    private val viewModel: TransferViewModel by activityViewModels()
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View {
+        _binding = TransferTargetFragmentBinding.inflate(inflater, container, false)
+
+        viewModel.thisDevice.observe(viewLifecycleOwner) { device ->
+            if (device == null) {
+                return@observe
+            }
+
+            if (device.status == 3) {
+                binding.ripple.startRippleAnimation()
+                binding.retryButton.visibility = View.INVISIBLE
+            } else {
+                binding.ripple.stopRippleAnimation()
+                binding.retryButton.visibility = View.VISIBLE
+            }
+        }
+
+        viewModel.peers.observe(viewLifecycleOwner) { peers ->
+            if (peers == null) {
+                return@observe
+            }
+
+            binding.deviceList.adapter = TransferPeersAdapter(peers.deviceList) {
+                viewModel.connect(it)
+            }
+        }
+
+        binding.ripple.startRippleAnimation()
+
+        binding.retryButton.setOnClickListener {
+            viewModel.setStep(TransferStep.TARGET)
+        }
+
+        return binding.root
+    }
+
+    override fun onDestroyView() {
+        super.onDestroyView()
+        _binding = null
+    }
+
+}

app/src/main/java/xyz/quaver/pupil/ui/fragment/TransferWaitForConnectionFragment.kt

@@ -0,0 +1,32 @@
+package xyz.quaver.pupil.ui.fragment
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.fragment.app.Fragment
+import xyz.quaver.pupil.databinding.TransferWaitForConnectionFragmentBinding
+
+class TransferWaitForConnectionFragment : Fragment() {
+
+    private var _binding: TransferWaitForConnectionFragmentBinding? = null
+    private val binding get() = _binding!!
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View? {
+        _binding = TransferWaitForConnectionFragmentBinding.inflate(layoutInflater)
+
+        binding.ripple.startRippleAnimation()
+
+        return binding.root
+    }
+
+    override fun onDestroyView() {
+        super.onDestroyView()
+        _binding = null
+    }
+
+}

app/src/main/res/drawable/arrow.xml

@@ -0,0 +1,13 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+  <path
+      android:pathData="M4.5,10.5 L12,3m0,0 l7.5,7.5M12,3v18"
+      android:strokeLineJoin="round"
+      android:strokeWidth="1.5"
+      android:fillColor="#00000000"
+      android:strokeColor="@color/colorPrimaryDark"
+      android:strokeLineCap="round"/>
+</vector>

app/src/main/res/drawable/link.xml

@@ -0,0 +1,13 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+  <path
+      android:pathData="M13.19,8.688a4.5,4.5 0,0 1,1.242 7.244l-4.5,4.5a4.5,4.5 0,0 1,-6.364 -6.364l1.757,-1.757m13.35,-0.622 l1.757,-1.757a4.5,4.5 0,0 0,-6.364 -6.364l-4.5,4.5a4.5,4.5 0,0 0,1.242 7.244"
+      android:strokeLineJoin="round"
+      android:strokeWidth="1.5"
+      android:fillColor="#00000000"
+      android:strokeColor="@color/colorPrimaryDark"
+      android:strokeLineCap="round"/>
+</vector>

app/src/main/res/drawable/round_button.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:state_pressed="false">
+        <shape android:shape="oval">
+            <solid android:color="#dddddd"/>
+        </shape>
+    </item>
+    <item android:state_pressed="true">
+        <shape android:shape="oval">
+            <solid android:color="#888888"/>
+        </shape>
+    </item>
+</selector>

app/src/main/res/drawable/transfer_device.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:bottom="-8dp">
+        <shape xmlns:android="http://schemas.android.com/apk/res/android"
+            android:shape="rectangle">
+            <corners android:radius="32dp"
+                android:bottomLeftRadius="0dp"
+                android:bottomRightRadius="0dp" />
+            <stroke android:width="4dp" android:color="#444444"/>
+        </shape>
+    </item>
+</layer-list>

app/src/main/res/drawable/transfer_ripple.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ripple xmlns:android="http://schemas.android.com/apk/res/android" android:color="#9d9d9d">
+    <item android:id="@android:id/mask">
+        <shape android:shape="rectangle">
+            <solid android:color="#9d9d9d" />
+            <corners android:radius="16dp" />
+        </shape>
+    </item>
+</ripple>

app/src/main/res/drawable/warning.xml

@@ -0,0 +1,13 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+  <path
+      android:pathData="M12,9v3.75m-9.303,3.376c-0.866,1.5 0.217,3.374 1.948,3.374h14.71c1.73,0 2.813,-1.874 1.948,-3.374L13.949,3.378c-0.866,-1.5 -3.032,-1.5 -3.898,0L2.697,16.126ZM12,15.75h0.007v0.008H12v-0.008Z"
+      android:strokeLineJoin="round"
+      android:strokeWidth="1.5"
+      android:fillColor="#00000000"
+      android:strokeColor="@color/colorAccent"
+      android:strokeLineCap="round"/>
+</vector>

app/src/main/res/layout/transfer_activity.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.fragment.app.FragmentContainerView
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/fragment_container_view"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:name="xyz.quaver.pupil.ui.fragment.TransferDirectionFragment" />

app/src/main/res/layout/transfer_direction_fragment.xml

@@ -0,0 +1,89 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+
+    <TextView
+        android:id="@+id/textView"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+
+        android:layout_marginTop="80dp"
+        android:text="Transfer your data"
+        android:textAlignment="center"
+        android:textSize="28sp"
+        android:textStyle="bold"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <View
+        android:id="@+id/device"
+        android:layout_width="match_parent"
+        android:layout_height="300dp"
+        android:layout_marginHorizontal="64dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        android:background="@drawable/transfer_device"/>
+
+    <LinearLayout
+        android:id="@+id/out_button"
+        android:layout_width="100dp"
+        android:layout_height="100dp"
+        android:orientation="vertical"
+        android:gravity="center"
+        android:clickable="true"
+        android:focusable="true"
+        android:background="@drawable/transfer_ripple"
+        app:layout_constraintBottom_toTopOf="@id/device"
+        app:layout_constraintLeft_toLeftOf="@id/device"
+        app:layout_constraintRight_toRightOf="@id/device"
+        android:layout_marginBottom="32dp">
+        <androidx.appcompat.widget.AppCompatImageView
+            android:id="@+id/out_arrow"
+            android:layout_width="48dp"
+            android:layout_height="48dp"
+            app:srcCompat="@drawable/arrow"
+            android:layout_marginBottom="4dp" />
+
+        <TextView
+            android:id="@+id/out_text"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="Send data"
+            android:textStyle="bold"
+            android:layout_marginTop="4dp"/>
+
+    </LinearLayout>
+
+    <LinearLayout
+        android:id="@+id/in_button"
+        android:layout_width="100dp"
+        android:layout_height="100dp"
+        android:orientation="vertical"
+        android:gravity="center"
+        android:clickable="true"
+        android:focusable="true"
+        android:background="@drawable/transfer_ripple"
+        app:layout_constraintTop_toTopOf="@id/device"
+        app:layout_constraintLeft_toLeftOf="@id/device"
+        app:layout_constraintRight_toRightOf="@id/device"
+        android:layout_marginTop="32dp">
+        <TextView
+            android:id="@+id/in_text"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="Receive data"
+            android:textStyle="bold"
+            android:layout_marginBottom="4dp"/>
+
+        <androidx.appcompat.widget.AppCompatImageView
+            android:id="@+id/in_arrow"
+            android:layout_width="48dp"
+            android:layout_height="48dp"
+            app:srcCompat="@drawable/arrow"
+            android:layout_marginTop="4dp"
+            android:rotation="180"/>
+    </LinearLayout>
+
+
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout/transfer_peer_list_item.xml

@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:background="?attr/selectableItemBackground"
+    android:clickable="true"
+    android:focusable="true"
+    android:padding="16dp">
+
+    <TextView
+        android:id="@+id/device_name"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Gonsales Vorecek's Galaxy S22 Ultra"
+        android:textStyle="bold"
+        android:textSize="24sp"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintLeft_toLeftOf="parent"
+        android:layout_marginBottom="4dp"/>
+
+    <TextView
+        android:id="@+id/device_address"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="26:7D:2D:3A:4F:5E"
+        android:textSize="16sp"
+        app:layout_constraintTop_toBottomOf="@id/device_name"
+        app:layout_constraintLeft_toLeftOf="parent"
+        android:layout_marginTop="4dp"/>
+
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout/transfer_permission_fragment.xml

@@ -0,0 +1,38 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+
+    <androidx.appcompat.widget.AppCompatImageView
+        android:id="@+id/icon"
+        android:layout_width="48dp"
+        android:layout_height="48dp"
+        android:layout_marginTop="48dp"
+        app:srcCompat="@drawable/warning"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent" />
+
+    <TextView
+        android:id="@+id/textView"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="16dp"
+        android:text="Permissions Missing"
+        android:textAlignment="center"
+        android:textSize="28sp"
+        android:textStyle="bold"
+        app:layout_constraintTop_toBottomOf="@id/icon" />
+
+    <com.google.android.material.button.MaterialButton
+        android:id="@+id/permissions_button"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Grant Permissions"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        android:layout_marginHorizontal="36dp"
+        android:layout_marginVertical="64dp"/>
+
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout/transfer_target_fragment.xml

@@ -0,0 +1,58 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools">
+
+    <androidx.appcompat.widget.AppCompatImageView
+        android:id="@+id/icon"
+        android:layout_width="48dp"
+        android:layout_height="48dp"
+        android:layout_marginTop="48dp"
+        app:srcCompat="@drawable/link"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent" />
+
+    <TextView
+        android:id="@+id/textView"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="16dp"
+        android:text="Connect to your device"
+        android:textAlignment="center"
+        android:textSize="28sp"
+        android:textStyle="bold"
+        app:layout_constraintTop_toBottomOf="@id/icon" />
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/device_list"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        app:layoutManager="androidx.recyclerview.widget.LinearLayoutManager"
+        android:layout_marginHorizontal="32dp"
+        android:layout_marginVertical="32dp"
+        app:layout_constraintTop_toBottomOf="@id/textView"
+        app:layout_constraintBottom_toBottomOf="parent" />
+
+    <com.skyfishjy.library.RippleBackground
+        android:id="@+id/ripple"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        app:rb_color="@color/colorPrimaryDark"
+        app:rb_radius="32dp"
+        app:rb_type="strokeRipple"/>
+
+    <androidx.appcompat.widget.AppCompatButton
+        android:id="@+id/retry_button"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="Retry"
+        style="@style/Widget.AppCompat.Button.Borderless"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        android:visibility="invisible"
+        android:layout_margin="32dp"/>
+
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout/transfer_wait_for_connection_fragment.xml

@@ -0,0 +1,54 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <androidx.appcompat.widget.AppCompatImageView
+        android:id="@+id/icon"
+        android:layout_width="48dp"
+        android:layout_height="48dp"
+        android:layout_marginTop="48dp"
+        app:srcCompat="@drawable/link"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent" />
+
+    <TextView
+        android:id="@+id/textView"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="16dp"
+        android:text="Wait for connection"
+        android:textAlignment="center"
+        android:textSize="28sp"
+        android:textStyle="bold"
+        app:layout_constraintTop_toBottomOf="@id/icon" />
+
+    <com.skyfishjy.library.RippleBackground
+        android:id="@+id/ripple"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        app:layout_constraintDimensionRatio="1"
+        app:layout_constraintTop_toTopOf="@id/barrier"
+        app:layout_constraintBottom_toBottomOf="@id/barrier"
+        app:rb_color="@color/colorPrimaryDark"
+        app:rb_radius="32dp"
+        app:rb_type="strokeRipple"/>
+
+    <androidx.constraintlayout.widget.Barrier
+        android:id="@+id/barrier"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        app:barrierDirection="top"
+        app:constraint_referenced_ids="device" />
+
+    <View
+        android:id="@+id/device"
+        android:layout_width="match_parent"
+        android:layout_height="300dp"
+        android:layout_marginHorizontal="64dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        android:background="@drawable/transfer_device"/>
+
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/values-ja/strings.xml

@@ -159,4 +159,5 @@
     <string name="unaccessible_download_folder">アンドロイド11以上では外部からのアプリ内部空間接近が不可能です。ダウンロードフォルダを変更しますか？</string>
     <string name="settings_networking">ネットワーク</string>
     <string name="settings_recover_downloads">ダウンロードデータベースを再構築</string>
+    <string name="settings_transfer_data">他の機器にデータを転送</string>
 </resources>

app/src/main/res/values-ko/strings.xml

@@ -159,4 +159,5 @@
     <string name="unaccessible_download_folder">안드로이드 11 이상에서는 외부에서 현재 다운로드 폴더에 접근할 수 없습니다. 변경하시겠습니까?</string>
     <string name="settings_networking">네트워크</string>
     <string name="settings_recover_downloads">다운로드 데이터베이스 복구</string>
+    <string name="settings_transfer_data">다른 기기에 데이터 전송</string>
 </resources>

app/src/main/res/values/strings.xml

@@ -174,6 +174,7 @@
     <string name="settings_nomedia_title">Hide image from gallery</string>
     <string name="settings_low_quality">Low quality images</string>
     <string name="settings_low_quality_summary">Load low quality images to improve load speed and data usage</string>
+    <string name="settings_transfer_data">Transfer data to another device</string>
 
     <!-- SETTINGS/APP LOCK -->
 

app/src/main/res/xml/root_preferences.xml

@@ -52,6 +52,10 @@
             app:defaultValue="8"
             app:useSimpleSummaryProvider="true"/>
 
+        <Preference
+            app:key="transfer_data"
+            app:title="@string/settings_transfer_data"/>
+
         <SwitchPreferenceCompat
             app:key="nomedia"
             app:title="@string/settings_nomedia_title"/>