fix: not found inflate(LayoutInflater) in the ViewGroup (#26)

hi-dhl · May 9, 2021 · f3de58d · f3de58d
1 parent 7adf844
commit f3de58d
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Showing 6 changed files with 56 additions and 18 deletions.
diff --git a/app/build.gradle b/app/build.gradle
@@ -47,7 +47,7 @@ dependencies {
     ext.material = "1.2.1"
     ext.appcompat = "1.2.0"
     ext.ktx = "1.3.2"
-    ext.remote = true
+    ext.remote = false
 
     implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
     implementation "androidx.core:core-ktx:${ktx}"

diff --git a/app/src/main/java/com/hi/dhl/demo/binding/viewbind/ViewBindCustomView.kt b/app/src/main/java/com/hi/dhl/demo/binding/viewbind/ViewBindCustomView.kt
@@ -23,7 +23,11 @@ class ViewBindCustomView @JvmOverloads constructor(
 
     lateinit var onDialogClickListener: OnDialogClickListener
 
-    val binding: LayoutViewCustomBinding by viewbind()
+    // 当根布局为 merge 标签，使用此方法进行初始化
+    val binding: LayoutViewCustomBinding by viewbind(this)
+
+    // 当根布局是非 merge 标签，使用此方法进行初始化
+//    val binding: LayoutViewCustomBinding by viewbind()
 
     init {
         with(binding) {

diff --git a/app/src/main/res/layout/layout_view_custom.xml b/app/src/main/res/layout/layout_view_custom.xml
@@ -1,15 +1,18 @@
 <?xml version="1.0" encoding="utf-8"?>
-<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    android:gravity="center"
-    android:orientation="vertical">
+<merge xmlns:android="http://schemas.android.com/apk/res/android">
 
-    <TextView
-        android:id="@+id/result"
-        android:layout_width="wrap_content"
-        android:layout_height="30dp" />
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:gravity="center"
+        android:orientation="vertical">
 
-    <include layout="@layout/layout_merge_item" />
+        <TextView
+            android:id="@+id/result"
+            android:layout_width="wrap_content"
+            android:layout_height="30dp" />
 
-</LinearLayout>
+        <include layout="@layout/layout_merge_item" />
+    </LinearLayout>
+
+</merge>
diff --git a/binding/src/main/java/com/hi/dhl/binding/ext/ComponentExt.kt b/binding/src/main/java/com/hi/dhl/binding/ext/ComponentExt.kt
@@ -111,4 +111,11 @@ inline fun <reified T : ViewBinding> RecyclerView.ViewHolder.viewbind() =
 inline fun <reified T : ViewBinding> ViewGroup.viewbind() = ViewGroupViewBinding(
     T::class.java,
     LayoutInflater.from(getContext())
-)
+)
+
+inline fun <reified T : ViewBinding> ViewGroup.viewbind(viewGroup: ViewGroup) =
+    ViewGroupViewBinding(
+        T::class.java,
+        LayoutInflater.from(getContext()),
+        viewGroup
+    )
diff --git a/binding/src/main/java/com/hi/dhl/binding/ext/ReflectExt.kt b/binding/src/main/java/com/hi/dhl/binding/ext/ReflectExt.kt
@@ -2,6 +2,7 @@ package com.hi.dhl.binding
 
 import android.view.LayoutInflater
 import android.view.View
+import android.view.ViewGroup
 
 /**
  * <pre>
@@ -16,4 +17,7 @@ const val BIND_NAME = "bind"
 
 fun <T> Class<T>.inflateMethod() = getMethod(INFLATE_NAME, LayoutInflater::class.java)
 
+fun <T> Class<T>.inflateMethodWithViewGroup() =
+    getMethod(INFLATE_NAME, LayoutInflater::class.java, ViewGroup::class.java)
+
 fun <T> Class<T>.bindMethod() = getMethod(BIND_NAME, View::class.java)
diff --git a/binding/src/main/java/com/hi/dhl/binding/viewbind/ViewGroupViewBinding.kt b/binding/src/main/java/com/hi/dhl/binding/viewbind/ViewGroupViewBinding.kt
@@ -4,6 +4,8 @@ import android.view.LayoutInflater
 import android.view.ViewGroup
 import androidx.viewbinding.ViewBinding
 import com.hi.dhl.binding.inflateMethod
+import com.hi.dhl.binding.inflateMethodWithViewGroup
+import java.lang.reflect.Method
 import kotlin.properties.ReadOnlyProperty
 import kotlin.reflect.KProperty
 
@@ -17,20 +19,38 @@ import kotlin.reflect.KProperty
 
 class ViewGroupViewBinding<T : ViewBinding>(
     classes: Class<T>,
-    val inflater: LayoutInflater
+    val inflater: LayoutInflater,
+    val viewGroup: ViewGroup? = null
 ) : ReadOnlyProperty<ViewGroup, T> {
 
     private var viewBinding: T? = null
-    private val layoutInflater = classes.inflateMethod()
+    private var layoutInflater: Method
+
+    init {
+        if (viewGroup != null) {
+            layoutInflater = classes.inflateMethodWithViewGroup()
+        } else {
+            layoutInflater = classes.inflateMethod()
+        }
+    }
 
     override fun getValue(thisRef: ViewGroup, property: KProperty<*>): T {
         return viewBinding?.run {
             this
 
         } ?: let {
-            val bind = layoutInflater.invoke(null, inflater) as T
+
+            val bind: T
+            if (viewGroup != null) {
+                bind = layoutInflater.invoke(null, inflater, viewGroup) as T
+            } else {
+                bind = layoutInflater.invoke(null, inflater) as T
+            }
+
             bind.apply {
-                thisRef.addView(bind.root)
+                if (viewGroup == null) {
+                    thisRef.addView(bind.root)
+                }
                 viewBinding = this
             }
         }