# ActivityMainBinding unsolve reference

**URL:** <https://discuss.kotlinlang.org/t/activitymainbinding-unsolve-reference/26747>\
**Category:** Android\
**Created:** [April 28, 2023, 7:25pm UTC](https://discuss.kotlinlang.org/t/activitymainbinding-unsolve-reference/26747 "2023-04-28T19:25:57Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![victoryghor](https://avatars.discourse-cdn.com/v4/letter/v/4af34b/32.png) [@victoryghor](https://discuss.kotlinlang.org/u/victoryghor)\
**Post date:** [April 28, 2023, 7:25pm UTC](https://discuss.kotlinlang.org/t/activitymainbinding-unsolve-reference/26747/1 "2023-04-28T19:25:57Z")

</div>

I try use the API cameraX but ActivityMainBinding, seems do not exist

 ![image](https://us1.discourse-cdn.com/flex019/uploads/kotlinlang/original/2X/b/b4f3f60d04df7bd90a44ce873cd93123e8106a8b.png)  
someone konws how can I solve this

---

<div class="post-metadata">

**Author:** ![Skater901](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.kotlinlang.org/skater901/32/10163_2.png) [@Skater901](https://discuss.kotlinlang.org/u/Skater901)\
**Post date:** [May 4, 2023, 8:43am UTC](https://discuss.kotlinlang.org/t/activitymainbinding-unsolve-reference/26747/2 "2023-05-04T08:43:32Z")

</div>

Best I can give you is a Stack Overflow link, sorry: [android - Unresolved reference:ActivityMainBinding - Stack Overflow](https://stackoverflow.com/questions/55933708/unresolved-referenceactivitymainbinding)

I don’t do Android development so no idea. 🙂

---

<div class="post-metadata">

**Author:** ![alraj](https://avatars.discourse-cdn.com/v4/letter/a/ecccb3/32.png) [@alraj](https://discuss.kotlinlang.org/u/alraj)\
**Post date:** [May 4, 2023, 10:47am UTC](https://discuss.kotlinlang.org/t/activitymainbinding-unsolve-reference/26747/3 "2023-05-04T10:47:15Z")

</div>

Your project seems be a Compose project, does it have an `activity_main.xml` in layout res?

if your project has `activity_main.xml`

1. Check `viewBinding true` in module build.gradle under `buildFeatures` in `android` block.
2. It should be ‘ActivityMainBinding’ not ‘ActivityMainBinder’.

---

<div class="post-metadata">

**Author:** ![victoryghor](https://avatars.discourse-cdn.com/v4/letter/v/4af34b/32.png) [@victoryghor](https://discuss.kotlinlang.org/u/victoryghor)\
**Post date:** [May 5, 2023, 5:53pm UTC](https://discuss.kotlinlang.org/t/activitymainbinding-unsolve-reference/26747/5 "2023-05-05T17:53:25Z")

</div>

You are right, I am trying to implement a X camera API tutorial and in the example, xml file is used to create the UI, when I change my project to XML it works fine:smile