diff --git a/arrowpanel/build.gradle b/arrowpanel/build.gradle
index 17e3d83..af965a0 100644
--- a/arrowpanel/build.gradle
+++ b/arrowpanel/build.gradle
@@ -6,7 +6,7 @@ plugins {
 
 def LIB_GROUP_ID = 'com.mahdikh.vision'
 def LIB_ARTIFACT_ID = 'arrowpanel'
-def LIB_VERSION = '4.0.8'
+def LIB_VERSION = '4.1.0'
 
 android {
     compileSdk 30
diff --git a/arrowpanel/src/main/java/com/mahdikh/vision/arrowpanel/widget/ArrowPanel.kt b/arrowpanel/src/main/java/com/mahdikh/vision/arrowpanel/widget/ArrowPanel.kt
index 4633c95..a862001 100644
--- a/arrowpanel/src/main/java/com/mahdikh/vision/arrowpanel/widget/ArrowPanel.kt
+++ b/arrowpanel/src/main/java/com/mahdikh/vision/arrowpanel/widget/ArrowPanel.kt
@@ -13,6 +13,7 @@ import android.view.View.OnLongClickListener
 import android.view.WindowManager.LayoutParams
 import androidx.annotation.CallSuper
 import androidx.annotation.ColorInt
+import androidx.annotation.IdRes
 import androidx.annotation.LayoutRes
 import androidx.fragment.app.FragmentActivity
 import com.mahdikh.vision.arrowpanel.animator.BaseAnimator
@@ -411,7 +412,7 @@ open class ArrowPanel(context: Context) : Panel(context) {
         return arrowLayout
     }
 
-    open fun findView(id: Int): View {
+    open fun <T : View> findView(@IdRes id: Int): T {
         return arrowLayout.findViewById(id)
     }
 
@@ -528,6 +529,10 @@ open class ArrowPanel(context: Context) : Panel(context) {
         private val panelParams = PanelParams()
         private val arrowPanel = ArrowPanel(context)
 
+        fun attachContentView() {
+            panelParams.attachContentView(arrowPanel)
+        }
+
         fun setContentView(view: View): Builder {
             panelParams.mView = view
             panelParams.mViewLayoutResId = 0
diff --git a/arrowpanel/src/main/java/com/mahdikh/vision/arrowpanel/widget/PanelParams.kt b/arrowpanel/src/main/java/com/mahdikh/vision/arrowpanel/widget/PanelParams.kt
index d8a1bfa..1514f87 100644
--- a/arrowpanel/src/main/java/com/mahdikh/vision/arrowpanel/widget/PanelParams.kt
+++ b/arrowpanel/src/main/java/com/mahdikh/vision/arrowpanel/widget/PanelParams.kt
@@ -3,7 +3,7 @@ package com.mahdikh.vision.arrowpanel.widget
 import android.view.View
 
 class PanelParams {
-    var mViewLayoutResId: Int = 0
+    var mViewLayoutResId: Int = -1
     var mView: View? = null
     var targetView: View? = null
 
@@ -12,11 +12,31 @@ class PanelParams {
     var clickIds: IntArray? = null
     var longClickIds: IntArray? = null
 
+    var isAttachedContentView = false
+
+    fun attachContentView(panel: ArrowPanel) {
+        val instance = mView
+        if (instance != null) {
+            isAttachedContentView = true
+            panel.setContentView(instance)
+        } else {
+            if (mViewLayoutResId != -1) {
+                isAttachedContentView = true
+                panel.setContentView(mViewLayoutResId)
+                return
+            }
+            throw NullPointerException()
+        }
+    }
+
     fun apply(panel: ArrowPanel) {
-        mView?.let {
-            panel.setContentView(it)
-        } ?: kotlin.run {
-            panel.setContentView(mViewLayoutResId)
+        if (!isAttachedContentView) {
+            val instance = mView
+            if (instance != null) {
+                panel.setContentView(instance)
+            } else {
+                panel.setContentView(mViewLayoutResId)
+            }
         }
 
         val cIds = clickIds