Use view binding property delegate (#22)

app/build.gradle

@@ -159,4 +159,7 @@ dependencies {
     def stetho_version = "1.6.0"
     implementation "com.facebook.stetho:stetho:$stetho_version"
     implementation "com.facebook.stetho:stetho-okhttp3:$stetho_version"
+
+    // https://github.com/androidbroadcast/ViewBindingPropertyDelegate/releases
+    implementation "com.github.kirich1409:viewbindingpropertydelegate-noreflection:1.5.3"
 }

app/src/main/java/gq/kirmanak/mealient/ui/auth/AuthenticationFragment.kt

@@ -1,9 +1,7 @@
 package gq.kirmanak.mealient.ui.auth
 
 import android.os.Bundle
-import android.view.LayoutInflater
 import android.view.View
-import android.view.ViewGroup
 import android.widget.EditText
 import androidx.appcompat.app.AppCompatActivity
 import androidx.fragment.app.Fragment
@@ -11,6 +9,7 @@ import androidx.fragment.app.viewModels
 import androidx.lifecycle.Observer
 import androidx.lifecycle.lifecycleScope
 import androidx.navigation.fragment.findNavController
+import by.kirich1409.viewbindingdelegate.viewBinding
 import com.google.android.material.textfield.TextInputLayout
 import dagger.hilt.android.AndroidEntryPoint
 import gq.kirmanak.mealient.R
@@ -24,10 +23,8 @@ import timber.log.Timber
 
 @ExperimentalCoroutinesApi
 @AndroidEntryPoint
-class AuthenticationFragment : Fragment() {
+class AuthenticationFragment : Fragment(R.layout.fragment_authentication) {
-    private var _binding: FragmentAuthenticationBinding? = null
+    private val binding by viewBinding(FragmentAuthenticationBinding::bind)
-    private val binding: FragmentAuthenticationBinding
-        get() = checkNotNull(_binding) { "Binding requested when fragment is off screen" }
     private val viewModel by viewModels<AuthenticationViewModel>()
 
     private val authStatuses by lazy { viewModel.authenticationStatuses() }
@@ -46,16 +43,6 @@ class AuthenticationFragment : Fragment() {
         authStatuses.observe(this, authStatusObserver)
     }
 
-    override fun onCreateView(
-        inflater: LayoutInflater,
-        container: ViewGroup?,
-        savedInstanceState: Bundle?
-    ): View {
-        Timber.v("onCreateView() called with: inflater = $inflater, container = $container, savedInstanceState = $savedInstanceState")
-        _binding = FragmentAuthenticationBinding.inflate(inflater, container, false)
-        return binding.root
-    }
-
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
         Timber.v("onViewCreated() called with: view = $view, savedInstanceState = $savedInstanceState")
@@ -129,10 +116,4 @@ class AuthenticationFragment : Fragment() {
         input.textChangesFlow().filterNotNull().first { it.isNotEmpty() }
         Timber.v("waitUntilNotEmpty() returned")
     }
-
-    override fun onDestroyView() {
-        super.onDestroyView()
-        Timber.v("onDestroyView() called")
-        _binding = null
-    }
 }

app/src/main/java/gq/kirmanak/mealient/ui/disclaimer/DisclaimerFragment.kt

@@ -1,23 +1,20 @@
 package gq.kirmanak.mealient.ui.disclaimer
 
 import android.os.Bundle
-import android.view.LayoutInflater
 import android.view.View
-import android.view.ViewGroup
 import androidx.appcompat.app.AppCompatActivity
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.viewModels
 import androidx.navigation.fragment.findNavController
+import by.kirich1409.viewbindingdelegate.viewBinding
 import dagger.hilt.android.AndroidEntryPoint
 import gq.kirmanak.mealient.R
 import gq.kirmanak.mealient.databinding.FragmentDisclaimerBinding
 import timber.log.Timber
 
 @AndroidEntryPoint
-class DisclaimerFragment : Fragment() {
+class DisclaimerFragment : Fragment(R.layout.fragment_disclaimer) {
-    private var _binding: FragmentDisclaimerBinding? = null
+    private val binding by viewBinding(FragmentDisclaimerBinding::bind)
-    private val binding: FragmentDisclaimerBinding
-        get() = checkNotNull(_binding) { "Binding requested when fragment is off screen" }
     private val viewModel by viewModels<DisclaimerViewModel>()
 
     override fun onCreate(savedInstanceState: Bundle?) {
@@ -40,16 +37,6 @@ class DisclaimerFragment : Fragment() {
         findNavController().navigate(DisclaimerFragmentDirections.actionDisclaimerFragmentToAuthenticationFragment())
     }
 
-    override fun onCreateView(
-        inflater: LayoutInflater,
-        container: ViewGroup?,
-        savedInstanceState: Bundle?
-    ): View {
-        Timber.v("onCreateView() called with: inflater = $inflater, container = $container, savedInstanceState = $savedInstanceState")
-        _binding = FragmentDisclaimerBinding.inflate(inflater, container, false)
-        return binding.root
-    }
-
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
         Timber.v("onViewCreated() called with: view = $view, savedInstanceState = $savedInstanceState")
@@ -68,10 +55,4 @@ class DisclaimerFragment : Fragment() {
         (requireActivity() as? AppCompatActivity)?.supportActionBar?.title =
             getString(R.string.app_name)
     }
-
-    override fun onDestroyView() {
-        super.onDestroyView()
-        Timber.v("onDestroyView() called")
-        _binding = null
-    }
 }

app/src/main/java/gq/kirmanak/mealient/ui/recipes/RecipesFragment.kt

@@ -1,16 +1,16 @@
 package gq.kirmanak.mealient.ui.recipes
 
 import android.os.Bundle
-import android.view.LayoutInflater
 import android.view.View
-import android.view.ViewGroup
 import androidx.appcompat.app.AppCompatActivity
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.viewModels
 import androidx.lifecycle.Observer
 import androidx.lifecycle.lifecycleScope
 import androidx.navigation.fragment.findNavController
+import by.kirich1409.viewbindingdelegate.viewBinding
 import dagger.hilt.android.AndroidEntryPoint
+import gq.kirmanak.mealient.R
 import gq.kirmanak.mealient.data.recipes.db.entity.RecipeSummaryEntity
 import gq.kirmanak.mealient.databinding.FragmentRecipesBinding
 import gq.kirmanak.mealient.ui.auth.AuthenticationViewModel
@@ -21,10 +21,8 @@ import timber.log.Timber
 
 @ExperimentalCoroutinesApi
 @AndroidEntryPoint
-class RecipesFragment : Fragment() {
+class RecipesFragment : Fragment(R.layout.fragment_recipes) {
-    private var _binding: FragmentRecipesBinding? = null
+    private val binding by viewBinding(FragmentRecipesBinding::bind)
-    private val binding: FragmentRecipesBinding
-        get() = checkNotNull(_binding) { "Binding requested when fragment is off screen" }
     private val viewModel by viewModels<RecipeViewModel>()
 
     private val authViewModel by viewModels<AuthenticationViewModel>()
@@ -38,16 +36,6 @@ class RecipesFragment : Fragment() {
         }
     }
 
-    override fun onCreateView(
-        inflater: LayoutInflater,
-        container: ViewGroup?,
-        savedInstanceState: Bundle?
-    ): View {
-        Timber.v("onCreateView() called with: inflater = $inflater, container = $container, savedInstanceState = $savedInstanceState")
-        _binding = FragmentRecipesBinding.inflate(inflater, container, false)
-        return binding.root
-    }
-
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
         Timber.v("onViewCreated() called with: view = $view, savedInstanceState = $savedInstanceState")
@@ -89,10 +77,4 @@ class RecipesFragment : Fragment() {
             }
         }
     }
-
-    override fun onDestroyView() {
-        super.onDestroyView()
-        Timber.v("onDestroyView() called")
-        _binding = null
-    }
 }

app/src/main/java/gq/kirmanak/mealient/ui/recipes/info/RecipeInfoFragment.kt

@@ -8,6 +8,7 @@ import android.view.ViewGroup
 import androidx.appcompat.app.AppCompatActivity
 import androidx.fragment.app.viewModels
 import androidx.navigation.fragment.navArgs
+import by.kirich1409.viewbindingdelegate.viewBinding
 import com.google.android.material.bottomsheet.BottomSheetDialog
 import com.google.android.material.bottomsheet.BottomSheetDialogFragment
 import dagger.hilt.android.AndroidEntryPoint
@@ -17,9 +18,7 @@ import timber.log.Timber
 
 @AndroidEntryPoint
 class RecipeInfoFragment : BottomSheetDialogFragment() {
-    private var _binding: FragmentRecipeInfoBinding? = null
+    private val binding by viewBinding(FragmentRecipeInfoBinding::bind)
-    private val binding: FragmentRecipeInfoBinding
-        get() = checkNotNull(_binding) { "Binding requested when fragment is off screen" }
     private val arguments by navArgs<RecipeInfoFragmentArgs>()
     private val viewModel by viewModels<RecipeInfoViewModel>()
 
@@ -29,8 +28,7 @@ class RecipeInfoFragment : BottomSheetDialogFragment() {
         savedInstanceState: Bundle?
     ): View {
         Timber.v("onCreateView() called with: inflater = $inflater, container = $container, savedInstanceState = $savedInstanceState")
-        _binding = FragmentRecipeInfoBinding.inflate(inflater, container, false)
+        return FragmentRecipeInfoBinding.inflate(inflater, container, false).root
-        return binding.root
     }
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
@@ -53,10 +51,4 @@ class RecipeInfoFragment : BottomSheetDialogFragment() {
 
     override fun onCreateDialog(savedInstanceState: Bundle?): Dialog =
         BottomSheetDialog(requireContext(), R.style.NoShapeBottomSheetDialog)
-
-    override fun onDestroyView() {
-        super.onDestroyView()
-        Timber.v("onDestroyView() called")
-        _binding = null
-    }
 }

app/src/main/java/gq/kirmanak/mealient/ui/splash/SplashFragment.kt

@@ -1,21 +1,19 @@
 package gq.kirmanak.mealient.ui.splash
 
 import android.os.Bundle
-import android.view.LayoutInflater
 import android.view.View
-import android.view.ViewGroup
 import androidx.appcompat.app.AppCompatActivity
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.viewModels
 import androidx.navigation.fragment.findNavController
 import dagger.hilt.android.AndroidEntryPoint
-import gq.kirmanak.mealient.databinding.FragmentSplashBinding
+import gq.kirmanak.mealient.R
 import gq.kirmanak.mealient.ui.setActionBarVisibility
 import gq.kirmanak.mealient.ui.setSystemUiVisibility
 import timber.log.Timber
 
 @AndroidEntryPoint
-class SplashFragment : Fragment() {
+class SplashFragment : Fragment(R.layout.fragment_splash) {
     private val viewModel by viewModels<SplashViewModel>()
 
     override fun onCreate(savedInstanceState: Bundle?) {
@@ -27,15 +25,10 @@ class SplashFragment : Fragment() {
         }
     }
 
-    override fun onCreateView(
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
-        inflater: LayoutInflater,
+        super.onViewCreated(view, savedInstanceState)
-        container: ViewGroup?,
+        Timber.v("onViewCreated() called with: view = $view, savedInstanceState = $savedInstanceState")
-        savedInstanceState: Bundle?
-    ): View {
-        Timber.v("onCreateView() called with: inflater = $inflater, container = $container, savedInstanceState = $savedInstanceState")
-        val binding = FragmentSplashBinding.inflate(inflater, container, false)
         changeFullscreenState(true)
-        return binding.root
     }
 
     override fun onDestroyView() {