Optimized interface names

sample/src/main/java/com/dylanc/viewbinding/sample/base/reflection/kotlin/BaseBindingActivity.kt

@@ -21,14 +21,14 @@ package com.dylanc.viewbinding.sample.base.reflection.kotlin
 import android.os.Bundle
 import androidx.appcompat.app.AppCompatActivity
 import androidx.viewbinding.ViewBinding
-import com.dylanc.viewbinding.base.BindingOwner
-import com.dylanc.viewbinding.base.BindingOwnerDelegate
+import com.dylanc.viewbinding.base.ActivityBinding
+import com.dylanc.viewbinding.base.ActivityBindingDelegate
 
 /**
  * @author Dylan Cai
  */
 abstract class BaseBindingActivity<VB : ViewBinding> : AppCompatActivity(),
-  BindingOwner<VB> by BindingOwnerDelegate() {
+  ActivityBinding<VB> by ActivityBindingDelegate() {
 
   override fun onCreate(savedInstanceState: Bundle?) {
     super.onCreate(savedInstanceState)

sample/src/main/java/com/dylanc/viewbinding/sample/base/reflection/kotlin/BaseBindingFragment.kt

@@ -23,14 +23,14 @@ import android.view.LayoutInflater
 import android.view.ViewGroup
 import androidx.fragment.app.Fragment
 import androidx.viewbinding.ViewBinding
-import com.dylanc.viewbinding.base.BindingOwner
-import com.dylanc.viewbinding.base.BindingOwnerDelegate
+import com.dylanc.viewbinding.base.FragmentBinding
+import com.dylanc.viewbinding.base.FragmentBindingDelegate
 
 /**
  * @author Dylan Cai
  */
 abstract class BaseBindingFragment<VB : ViewBinding> : Fragment(),
-  BindingOwner<VB> by BindingOwnerDelegate() {
+  FragmentBinding<VB> by FragmentBindingDelegate() {
 
   override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?) =
     createViewWithBinding(inflater, container)

viewbinding-base/build.gradle

@@ -37,4 +37,5 @@ android {
 
 dependencies {
     implementation "com.google.android.material:material:$materialVersion"
+    implementation "androidx.lifecycle:lifecycle-common-java8:$lifecycleVersion"
 }

viewbinding-base/src/main/java/com/dylanc/viewbinding/base/ActivityBinding.kt

@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2020. Dylan Cai
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.dylanc.viewbinding.base
+
+import android.app.Activity
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.fragment.app.Fragment
+import androidx.viewbinding.ViewBinding
+
+interface ActivityBinding<VB : ViewBinding> {
+  val binding: VB
+  fun Activity.setContentViewWithBinding()
+}
+
+class ActivityBindingDelegate<VB : ViewBinding> : ActivityBinding<VB> {
+  private lateinit var _binding: VB
+
+  override val binding: VB get() = _binding
+
+  override fun Activity.setContentViewWithBinding() {
+    _binding = ViewBindingUtil.inflateWithGeneric(this, layoutInflater)
+    setContentView(binding.root)
+  }
+}

viewbinding-base/src/main/java/com/dylanc/viewbinding/base/FragmentBinding.kt

@@ -0,0 +1,55 @@
+/*
+ * Copyright (c) 2020. Dylan Cai
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.dylanc.viewbinding.base
+
+import android.os.Handler
+import android.os.Looper
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import androidx.databinding.ViewDataBinding
+import androidx.fragment.app.Fragment
+import androidx.lifecycle.DefaultLifecycleObserver
+import androidx.lifecycle.LifecycleOwner
+import androidx.viewbinding.ViewBinding
+import kotlin.properties.ReadOnlyProperty
+import kotlin.reflect.KProperty
+
+interface FragmentBinding<VB : ViewBinding> {
+  val binding: VB
+  fun Fragment.createViewWithBinding(inflater: LayoutInflater, container: ViewGroup?): View
+}
+
+class FragmentBindingDelegate<VB : ViewBinding> : FragmentBinding<VB> {
+  private var _binding: VB? = null
+  private val handler by lazy { Handler(Looper.getMainLooper()) }
+
+  override val binding: VB
+    get() = requireNotNull(_binding) { "The property of binding has been destroyed." }
+
+  override fun Fragment.createViewWithBinding(inflater: LayoutInflater, container: ViewGroup?): View {
+    if (_binding == null) {
+      _binding = ViewBindingUtil.inflateWithGeneric(this, inflater, container, false)
+      viewLifecycleOwner.lifecycle.addObserver(object : DefaultLifecycleObserver {
+        override fun onDestroy(owner: LifecycleOwner) {
+          handler.post { _binding = null }
+        }
+      })
+    }
+    return _binding!!.root
+  }
+}