From f51a58d88dc7dc8e475be4b6c107dbbec7d85ce2 Mon Sep 17 00:00:00 2001
From: Obito Uchiha <astar.in.black@mail.ru>
Date: Sun, 19 Sep 2021 17:47:40 +0300
Subject: [PATCH 1/2] Created a project in Java

---
 .idea/misc.xml                                |  2 +-
 .../bluetoothcontrol/BluetoothDevice.java     | 20 +++++
 .../astar/bluetoothcontrol/BluetoothDevice.kt |  4 -
 .../bluetoothcontrol/ControlFragment.java     | 40 ++++++++++
 .../astar/bluetoothcontrol/ControlFragment.kt | 34 --------
 .../bluetoothcontrol/DevicesAdapter.java      | 71 +++++++++++++++++
 .../astar/bluetoothcontrol/DevicesAdapter.kt  | 53 -------------
 .../bluetoothcontrol/DevicesFragment.java     | 77 +++++++++++++++++++
 .../astar/bluetoothcontrol/DevicesFragment.kt | 66 ----------------
 .../astar/bluetoothcontrol/MainActivity.java  | 28 +++++++
 .../ru/astar/bluetoothcontrol/MainActivity.kt | 20 -----
 app/src/main/res/layout/fragment_control.xml  |  1 -
 12 files changed, 237 insertions(+), 179 deletions(-)
 create mode 100644 app/src/main/java/ru/astar/bluetoothcontrol/BluetoothDevice.java
 delete mode 100644 app/src/main/java/ru/astar/bluetoothcontrol/BluetoothDevice.kt
 create mode 100644 app/src/main/java/ru/astar/bluetoothcontrol/ControlFragment.java
 delete mode 100644 app/src/main/java/ru/astar/bluetoothcontrol/ControlFragment.kt
 create mode 100644 app/src/main/java/ru/astar/bluetoothcontrol/DevicesAdapter.java
 delete mode 100644 app/src/main/java/ru/astar/bluetoothcontrol/DevicesAdapter.kt
 create mode 100644 app/src/main/java/ru/astar/bluetoothcontrol/DevicesFragment.java
 delete mode 100644 app/src/main/java/ru/astar/bluetoothcontrol/DevicesFragment.kt
 create mode 100644 app/src/main/java/ru/astar/bluetoothcontrol/MainActivity.java
 delete mode 100644 app/src/main/java/ru/astar/bluetoothcontrol/MainActivity.kt

diff --git a/.idea/misc.xml b/.idea/misc.xml
index 2a9ec14..f460df0 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -4,7 +4,7 @@
     <option name="filePathToZoomLevelMap">
       <map>
         <entry key="..\:/Users/Predator/AndroidStudioProjects/BluetoothControl/app/src/main/res/layout/activity_main.xml" value="0.24010416666666667" />
-        <entry key="..\:/Users/Predator/AndroidStudioProjects/BluetoothControl/app/src/main/res/layout/fragment_control.xml" value="0.25416666666666665" />
+        <entry key="..\:/Users/Predator/AndroidStudioProjects/BluetoothControl/app/src/main/res/layout/fragment_control.xml" value="0.264" />
         <entry key="..\:/Users/Predator/AndroidStudioProjects/BluetoothControl/app/src/main/res/layout/fragment_devices.xml" value="0.264" />
         <entry key="..\:/Users/Predator/AndroidStudioProjects/BluetoothControl/app/src/main/res/layout/item_device.xml" value="0.536" />
       </map>
diff --git a/app/src/main/java/ru/astar/bluetoothcontrol/BluetoothDevice.java b/app/src/main/java/ru/astar/bluetoothcontrol/BluetoothDevice.java
new file mode 100644
index 0000000..d15f0f4
--- /dev/null
+++ b/app/src/main/java/ru/astar/bluetoothcontrol/BluetoothDevice.java
@@ -0,0 +1,20 @@
+package ru.astar.bluetoothcontrol;
+
+public class BluetoothDevice {
+
+    private final String name;
+    private final String address;
+
+    public BluetoothDevice(String name, String address) {
+        this.name = name;
+        this.address = address;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public String getAddress() {
+        return address;
+    }
+}
diff --git a/app/src/main/java/ru/astar/bluetoothcontrol/BluetoothDevice.kt b/app/src/main/java/ru/astar/bluetoothcontrol/BluetoothDevice.kt
deleted file mode 100644
index 209d77b..0000000
--- a/app/src/main/java/ru/astar/bluetoothcontrol/BluetoothDevice.kt
+++ /dev/null
@@ -1,4 +0,0 @@
-package ru.astar.bluetoothcontrol
-
-data class BluetoothDevice(val name: String, val address: String) {
-}
\ No newline at end of file
diff --git a/app/src/main/java/ru/astar/bluetoothcontrol/ControlFragment.java b/app/src/main/java/ru/astar/bluetoothcontrol/ControlFragment.java
new file mode 100644
index 0000000..1d6d35f
--- /dev/null
+++ b/app/src/main/java/ru/astar/bluetoothcontrol/ControlFragment.java
@@ -0,0 +1,40 @@
+package ru.astar.bluetoothcontrol;
+
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.fragment.app.Fragment;
+
+import ru.astar.bluetoothcontrol.databinding.FragmentControlBinding;
+
+public class ControlFragment extends Fragment {
+
+    private static final String KEY_DEVICE_ADDRESS = "key_device_address";
+
+    private FragmentControlBinding binding;
+
+    @Nullable
+    @Override
+    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
+        binding = FragmentControlBinding.inflate(inflater, container, false);
+        return binding.getRoot();
+    }
+
+    @Override
+    public void onDestroyView() {
+        super.onDestroyView();
+        binding = null;
+    }
+
+    public static ControlFragment newInstance(String address) {
+        Bundle args = new Bundle();
+        args.putString(KEY_DEVICE_ADDRESS, address);
+        ControlFragment fragment = new ControlFragment();
+        fragment.setArguments(args);
+        return fragment;
+    }
+}
diff --git a/app/src/main/java/ru/astar/bluetoothcontrol/ControlFragment.kt b/app/src/main/java/ru/astar/bluetoothcontrol/ControlFragment.kt
deleted file mode 100644
index 0d76e7a..0000000
--- a/app/src/main/java/ru/astar/bluetoothcontrol/ControlFragment.kt
+++ /dev/null
@@ -1,34 +0,0 @@
-package ru.astar.bluetoothcontrol
-
-import android.os.Bundle
-import androidx.fragment.app.Fragment
-import android.view.LayoutInflater
-import android.view.View
-import android.view.ViewGroup
-import ru.astar.bluetoothcontrol.databinding.FragmentControlBinding
-
-class ControlFragment : Fragment() {
-
-
-    private var _binding: FragmentControlBinding? = null
-    private val binding: FragmentControlBinding get() = _binding!!
-
-    override fun onCreateView(
-        inflater: LayoutInflater, container: ViewGroup?,
-        savedInstanceState: Bundle?
-    ): View {
-        _binding = FragmentControlBinding.inflate(inflater, container, false)
-        return binding.root
-    }
-
-    companion object {
-
-        private const val KEY_DEVICE_ADDRESS = "key_device_address"
-        @JvmStatic
-        fun newInstance(deviceAddress: String) = ControlFragment().apply {
-            arguments = Bundle().apply {
-                putString(KEY_DEVICE_ADDRESS, deviceAddress)
-            }
-        }
-    }
-}
\ No newline at end of file
diff --git a/app/src/main/java/ru/astar/bluetoothcontrol/DevicesAdapter.java b/app/src/main/java/ru/astar/bluetoothcontrol/DevicesAdapter.java
new file mode 100644
index 0000000..869d9cd
--- /dev/null
+++ b/app/src/main/java/ru/astar/bluetoothcontrol/DevicesAdapter.java
@@ -0,0 +1,71 @@
+package ru.astar.bluetoothcontrol;
+
+import android.annotation.SuppressLint;
+import android.view.LayoutInflater;
+import android.view.ViewGroup;
+
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.RecyclerView;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import ru.astar.bluetoothcontrol.databinding.ItemDeviceBinding;
+
+public class DevicesAdapter extends RecyclerView.Adapter<DevicesAdapter.DevicesViewHolder> {
+
+    private final List<BluetoothDevice> items = new ArrayList<>();
+    private  Callback callback = null;
+
+    @SuppressLint("NotifyDataSetChanged")
+    public void update(List<BluetoothDevice> items)  {
+        this.items.clear();
+        this.items.addAll(items);
+        notifyDataSetChanged();
+    }
+
+    public void setCallback(Callback callback) {
+        this.callback = callback;
+    }
+
+    @NonNull
+    @Override
+    public DevicesViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
+        ItemDeviceBinding binding = ItemDeviceBinding.inflate(
+                LayoutInflater.from(parent.getContext()),
+                parent,
+                false
+        );
+        return new DevicesViewHolder(binding);
+    }
+
+    @Override
+    public void onBindViewHolder(@NonNull DevicesViewHolder holder, int position) {
+        holder.bind(items.get(position));
+    }
+
+    @Override
+    public int getItemCount() {
+        return items.size();
+    }
+
+    class DevicesViewHolder extends RecyclerView.ViewHolder {
+
+        private final ItemDeviceBinding binding;
+
+        public DevicesViewHolder(@NonNull ItemDeviceBinding binding) {
+            super(binding.getRoot());
+            this.binding = binding;
+        }
+
+        public void bind(BluetoothDevice item) {
+            itemView.setOnClickListener(view -> callback.onItemClick(item));
+            binding.textName.setText(item.getName());
+            binding.textAddress.setText(item.getAddress());
+        }
+    }
+
+    public interface Callback {
+        void onItemClick(BluetoothDevice device);
+    }
+}
diff --git a/app/src/main/java/ru/astar/bluetoothcontrol/DevicesAdapter.kt b/app/src/main/java/ru/astar/bluetoothcontrol/DevicesAdapter.kt
deleted file mode 100644
index be2f360..0000000
--- a/app/src/main/java/ru/astar/bluetoothcontrol/DevicesAdapter.kt
+++ /dev/null
@@ -1,53 +0,0 @@
-package ru.astar.bluetoothcontrol
-
-import android.annotation.SuppressLint
-import android.view.LayoutInflater
-import android.view.View
-import android.view.ViewGroup
-import androidx.recyclerview.widget.RecyclerView
-import ru.astar.bluetoothcontrol.databinding.ItemDeviceBinding
-
-class DevicesAdapter : RecyclerView.Adapter<DevicesAdapter.DeviceViewHolder>() {
-
-    private val items = mutableListOf<BluetoothDevice>()
-    private var callback: Callback? = null
-
-    @SuppressLint("NotifyDataSetChanged")
-    fun update(items: List<BluetoothDevice>) {
-        this.items.clear()
-        this.items.addAll(items)
-        notifyDataSetChanged()
-    }
-
-    fun addCallback(callback: Callback) {
-        this.callback = callback
-    }
-
-    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): DeviceViewHolder {
-        val binding = ItemDeviceBinding
-            .inflate(LayoutInflater.from(parent.context), parent, false)
-        return DeviceViewHolder(binding)
-    }
-
-    override fun onBindViewHolder(holder: DeviceViewHolder, position: Int) {
-        holder.bind(items[position])
-    }
-
-    override fun getItemCount() = items.size
-
-    inner class DeviceViewHolder(private val binding: ItemDeviceBinding) : RecyclerView.ViewHolder(binding.root) {
-        fun bind(item: BluetoothDevice) {
-
-            itemView.setOnClickListener { callback?.onItemClick(item) }
-
-            binding.apply {
-                textName.text = item.name
-                textAddress.text = item.address
-            }
-        }
-    }
-
-    interface Callback {
-        fun onItemClick(device: BluetoothDevice)
-    }
-}
diff --git a/app/src/main/java/ru/astar/bluetoothcontrol/DevicesFragment.java b/app/src/main/java/ru/astar/bluetoothcontrol/DevicesFragment.java
new file mode 100644
index 0000000..de7ab92
--- /dev/null
+++ b/app/src/main/java/ru/astar/bluetoothcontrol/DevicesFragment.java
@@ -0,0 +1,77 @@
+package ru.astar.bluetoothcontrol;
+
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.fragment.app.Fragment;
+import androidx.recyclerview.widget.DividerItemDecoration;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import ru.astar.bluetoothcontrol.databinding.FragmentDevicesBinding;
+
+public class DevicesFragment extends Fragment implements DevicesAdapter.Callback {
+
+    private FragmentDevicesBinding binding;
+    private final DevicesAdapter devicesAdapter = new DevicesAdapter();
+
+    @Nullable
+    @Override
+    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
+        binding = FragmentDevicesBinding.inflate(inflater, container, false);
+        return binding.getRoot();
+    }
+
+    @Override
+    public void onDestroyView() {
+        super.onDestroyView();
+        binding = null;
+    }
+
+    @Override
+    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
+        super.onViewCreated(view, savedInstanceState);
+
+        setupRecyclerView();
+    }
+
+    private void setupRecyclerView() {
+        binding.devicesRecycler.setLayoutManager(new LinearLayoutManager(requireContext()));
+        binding.devicesRecycler.setAdapter(devicesAdapter);
+        binding.devicesRecycler.addItemDecoration(new DividerItemDecoration(requireContext(), RecyclerView.VERTICAL));
+
+        devicesAdapter.setCallback(this);
+
+        List<BluetoothDevice> items = new ArrayList<>();
+        items.add(new BluetoothDevice("Device 1", "00:00:00:00:00:01"));
+        items.add(new BluetoothDevice("Device 2", "00:00:00:00:00:02"));
+        items.add(new BluetoothDevice("Device 3", "00:00:00:00:00:03"));
+        items.add(new BluetoothDevice("Device 4", "00:00:00:00:00:04"));
+        items.add(new BluetoothDevice("Device 5", "00:00:00:00:00:05"));
+        devicesAdapter.update(items);
+    }
+
+    @Override
+    public void onItemClick(BluetoothDevice device) {
+        navigateToControlScreen(device.getAddress());
+    }
+
+    private void navigateToControlScreen(String address) {
+        getParentFragmentManager()
+                .beginTransaction()
+                .addToBackStack(null)
+                .replace(R.id.containerFragment, ControlFragment.newInstance(address))
+                .commit();
+    }
+
+    public static DevicesFragment newInstance() {
+        return new DevicesFragment();
+    }
+}
diff --git a/app/src/main/java/ru/astar/bluetoothcontrol/DevicesFragment.kt b/app/src/main/java/ru/astar/bluetoothcontrol/DevicesFragment.kt
deleted file mode 100644
index ad74ecb..0000000
--- a/app/src/main/java/ru/astar/bluetoothcontrol/DevicesFragment.kt
+++ /dev/null
@@ -1,66 +0,0 @@
-package ru.astar.bluetoothcontrol
-
-import android.os.Bundle
-import android.view.LayoutInflater
-import android.view.View
-import android.view.ViewGroup
-import android.widget.Toast
-import androidx.fragment.app.Fragment
-import androidx.recyclerview.widget.DividerItemDecoration
-import androidx.recyclerview.widget.LinearLayoutManager
-import androidx.recyclerview.widget.RecyclerView
-import ru.astar.bluetoothcontrol.databinding.FragmentDevicesBinding
-
-class DevicesFragment : Fragment(), DevicesAdapter.Callback {
-
-    private var _binding: FragmentDevicesBinding? = null
-    private val binding: FragmentDevicesBinding get() = _binding!!
-
-    private val devicesAdapter = DevicesAdapter()
-
-
-    override fun onCreateView(
-        inflater: LayoutInflater,
-        container: ViewGroup?,
-        savedInstanceState: Bundle?
-    ): View {
-        _binding = FragmentDevicesBinding.inflate(inflater, container, false)
-        return binding.root
-    }
-
-    override fun onDestroyView() {
-        super.onDestroyView()
-        _binding = null
-    }
-
-    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
-        super.onViewCreated(view, savedInstanceState)
-
-        binding.devicesRecycler.apply {
-            addItemDecoration(DividerItemDecoration(requireContext(), RecyclerView.VERTICAL))
-            layoutManager = LinearLayoutManager(requireContext())
-            adapter = devicesAdapter
-        }
-        
-        devicesAdapter.addCallback(this)
-
-        devicesAdapter.update(listOf(
-            BluetoothDevice("Device 1", "00:00:00:00:00:01"),
-            BluetoothDevice("Device 2", "00:00:00:00:00:02"),
-            BluetoothDevice("Device 3", "00:00:00:00:00:03"),
-            BluetoothDevice("Device 4", "00:00:00:00:00:04"),
-            BluetoothDevice("Device 5", "00:00:00:00:00:05")
-        ))
-    }
-
-    override fun onItemClick(device: BluetoothDevice) {
-        parentFragmentManager.beginTransaction()
-            .addToBackStack(null)
-            .replace(R.id.containerFragment, ControlFragment.newInstance(device.address))
-            .commit()
-    }
-
-    companion object {
-        fun newInstance() = DevicesFragment()
-    }
-}
\ No newline at end of file
diff --git a/app/src/main/java/ru/astar/bluetoothcontrol/MainActivity.java b/app/src/main/java/ru/astar/bluetoothcontrol/MainActivity.java
new file mode 100644
index 0000000..c24d25c
--- /dev/null
+++ b/app/src/main/java/ru/astar/bluetoothcontrol/MainActivity.java
@@ -0,0 +1,28 @@
+package ru.astar.bluetoothcontrol;
+
+import android.os.Bundle;
+
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.fragment.app.Fragment;
+
+import ru.astar.bluetoothcontrol.DevicesFragment;
+import ru.astar.bluetoothcontrol.R;
+
+public class MainActivity extends AppCompatActivity {
+
+    @Override
+    protected void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+
+        navigate(DevicesFragment.newInstance());
+    }
+
+    private void navigate(Fragment fragment) {
+        getSupportFragmentManager()
+                .beginTransaction()
+                .replace(R.id.containerFragment, fragment)
+                .commit();
+    }
+}
diff --git a/app/src/main/java/ru/astar/bluetoothcontrol/MainActivity.kt b/app/src/main/java/ru/astar/bluetoothcontrol/MainActivity.kt
deleted file mode 100644
index d9c8745..0000000
--- a/app/src/main/java/ru/astar/bluetoothcontrol/MainActivity.kt
+++ /dev/null
@@ -1,20 +0,0 @@
-package ru.astar.bluetoothcontrol
-
-import androidx.appcompat.app.AppCompatActivity
-import android.os.Bundle
-import androidx.fragment.app.Fragment
-
-class MainActivity : AppCompatActivity() {
-    override fun onCreate(savedInstanceState: Bundle?) {
-        super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_main)
-
-        navigate(DevicesFragment.newInstance())
-    }
-
-    private fun navigate(fragment: Fragment) {
-        supportFragmentManager.beginTransaction()
-            .replace(R.id.containerFragment, fragment)
-            .commit()
-    }
-}
\ No newline at end of file
diff --git a/app/src/main/res/layout/fragment_control.xml b/app/src/main/res/layout/fragment_control.xml
index 7688a65..27a1b26 100644
--- a/app/src/main/res/layout/fragment_control.xml
+++ b/app/src/main/res/layout/fragment_control.xml
@@ -20,7 +20,6 @@
         android:layout_width="match_parent"
         android:layout_height="wrap_content" />
 
-
     <androidx.appcompat.widget.SwitchCompat
         android:id="@+id/ledSecond"
         android:layout_marginTop="@dimen/margin_small"

From d550be051d32fd4681a7a59060fad5796800b23b Mon Sep 17 00:00:00 2001
From: Obito Uchiha <astar.in.black@mail.ru>
Date: Sun, 19 Sep 2021 18:08:28 +0300
Subject: [PATCH 2/2] Added class BaseFragment

---
 .../astar/bluetoothcontrol/BaseFragment.java  | 31 +++++++++++++++++++
 .../bluetoothcontrol/ControlFragment.java     | 21 ++-----------
 .../bluetoothcontrol/DevicesFragment.java     | 15 ++-------
 3 files changed, 37 insertions(+), 30 deletions(-)
 create mode 100644 app/src/main/java/ru/astar/bluetoothcontrol/BaseFragment.java

diff --git a/app/src/main/java/ru/astar/bluetoothcontrol/BaseFragment.java b/app/src/main/java/ru/astar/bluetoothcontrol/BaseFragment.java
new file mode 100644
index 0000000..4bda3d1
--- /dev/null
+++ b/app/src/main/java/ru/astar/bluetoothcontrol/BaseFragment.java
@@ -0,0 +1,31 @@
+package ru.astar.bluetoothcontrol;
+
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.fragment.app.Fragment;
+import androidx.viewbinding.ViewBinding;
+
+abstract class BaseFragment<VB extends ViewBinding> extends Fragment {
+
+    protected VB binding;
+
+    @Nullable
+    @Override
+    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
+        binding = initViewBinding(inflater, container);
+        return binding.getRoot();
+    }
+
+    @Override
+    public void onDestroyView() {
+        super.onDestroyView();
+        binding = null;
+    }
+
+    abstract VB initViewBinding(LayoutInflater inflater, ViewGroup container);
+}
diff --git a/app/src/main/java/ru/astar/bluetoothcontrol/ControlFragment.java b/app/src/main/java/ru/astar/bluetoothcontrol/ControlFragment.java
index 1d6d35f..6425a3f 100644
--- a/app/src/main/java/ru/astar/bluetoothcontrol/ControlFragment.java
+++ b/app/src/main/java/ru/astar/bluetoothcontrol/ControlFragment.java
@@ -2,32 +2,17 @@
 
 import android.os.Bundle;
 import android.view.LayoutInflater;
-import android.view.View;
 import android.view.ViewGroup;
 
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-import androidx.fragment.app.Fragment;
-
 import ru.astar.bluetoothcontrol.databinding.FragmentControlBinding;
 
-public class ControlFragment extends Fragment {
+public class ControlFragment extends BaseFragment<FragmentControlBinding> {
 
     private static final String KEY_DEVICE_ADDRESS = "key_device_address";
 
-    private FragmentControlBinding binding;
-
-    @Nullable
-    @Override
-    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
-        binding = FragmentControlBinding.inflate(inflater, container, false);
-        return binding.getRoot();
-    }
-
     @Override
-    public void onDestroyView() {
-        super.onDestroyView();
-        binding = null;
+    FragmentControlBinding initViewBinding(LayoutInflater inflater, ViewGroup container) {
+        return FragmentControlBinding.inflate(inflater, container, false);
     }
 
     public static ControlFragment newInstance(String address) {
diff --git a/app/src/main/java/ru/astar/bluetoothcontrol/DevicesFragment.java b/app/src/main/java/ru/astar/bluetoothcontrol/DevicesFragment.java
index de7ab92..0b02688 100644
--- a/app/src/main/java/ru/astar/bluetoothcontrol/DevicesFragment.java
+++ b/app/src/main/java/ru/astar/bluetoothcontrol/DevicesFragment.java
@@ -17,22 +17,13 @@
 
 import ru.astar.bluetoothcontrol.databinding.FragmentDevicesBinding;
 
-public class DevicesFragment extends Fragment implements DevicesAdapter.Callback {
+public class DevicesFragment extends BaseFragment<FragmentDevicesBinding> implements DevicesAdapter.Callback {
 
-    private FragmentDevicesBinding binding;
     private final DevicesAdapter devicesAdapter = new DevicesAdapter();
 
-    @Nullable
     @Override
-    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
-        binding = FragmentDevicesBinding.inflate(inflater, container, false);
-        return binding.getRoot();
-    }
-
-    @Override
-    public void onDestroyView() {
-        super.onDestroyView();
-        binding = null;
+    FragmentDevicesBinding initViewBinding(LayoutInflater inflater, ViewGroup container) {
+        return FragmentDevicesBinding.inflate(inflater, container, false);
     }
 
     @Override