# com.sendbird.uikit.databinding.SbViewMessageInputBinding.etInputText' on a null object reference

**URL:** <https://community.sendbird.com/t/com-sendbird-uikit-databinding-sbviewmessageinputbinding-etinputtext-on-a-null-object-reference/5812>\
**Category:** Android\
**Tags:** android, uikit\
**Created:** [October 25, 2022, 8:07am UTC](https://community.sendbird.com/t/com-sendbird-uikit-databinding-sbviewmessageinputbinding-etinputtext-on-a-null-object-reference/5812 "2022-10-25T08:07:04Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Junifer\_Rionaldi\_Manik](https://sea2.discourse-cdn.com/flex020/user_avatar/community.sendbird.com/junifer_rionaldi_manik/32/3202_2.png) [@Junifer\_Rionaldi\_Manik](https://community.sendbird.com/u/Junifer_Rionaldi_Manik)\
**Post date:** [October 25, 2022, 8:07am UTC](https://community.sendbird.com/t/com-sendbird-uikit-databinding-sbviewmessageinputbinding-etinputtext-on-a-null-object-reference/5812/1 "2022-10-25T08:07:04Z")

</div>

**[Problem/Question]**

- So after our App was rejected because request permission `android.permission.REQUEST_INSTALL_PACKAGES` which is used by senbird under version 3.1.0 so we decide to migrate to version 3.1.1, but when doing migration we found crash on ChannelActivity, we dont use any mention but the error show MentionEditText, i still dont know what happen

```auto
E/SBUIKIT: [14:51:02.901 MessageInputView:<init>():199] java.lang.ClassCastException: androidx.appcompat.widget.AppCompatEditText cannot be cast to com.sendbird.uikit.widgets.MentionEditText
        at com.sendbird.uikit.databinding.SbViewMessageInputBinding.bind(SbViewMessageInputBinding.java:148)
        at com.sendbird.uikit.databinding.SbViewMessageInputBinding.inflate(SbViewMessageInputBinding.java:120)
        at com.sendbird.uikit.widgets.MessageInputView.<init>(MessageInputView.java:92)
        at com.sendbird.uikit.modules.components.MessageInputComponent.onCreateView(MessageInputComponent.java:126)
        at com.sendbird.uikit.modules.ChannelModule.onCreateView(ChannelModule.java:115)
        at com.sendbird.uikit.fragments.BaseModuleFragment.onCreateView(BaseModuleFragment.java:62)
        at androidx.fragment.app.Fragment.performCreateView(Fragment.java:2995)
        at androidx.fragment.app.FragmentStateManager.createView(FragmentStateManager.java:523)
        at androidx.fragment.app.FragmentStateManager.moveToExpectedState(FragmentStateManager.java:261)
        at androidx.fragment.app.FragmentManager.executeOpsTogether(FragmentManager.java:1840)
        at androidx.fragment.app.FragmentManager.removeRedundantOperationsAndExecute(FragmentManager.java:1758)
        at androidx.fragment.app.FragmentManager.execPendingActions(FragmentManager.java:1701)
        at androidx.fragment.app.FragmentManager.dispatchStateChange(FragmentManager.java:2849)
        at androidx.fragment.app.FragmentManager.dispatchActivityCreated(FragmentManager.java:2784)
        at androidx.fragment.app.FragmentController.dispatchActivityCreated(FragmentController.java:262)
        at androidx.fragment.app.FragmentActivity.onStart(FragmentActivity.java:478)
        at androidx.appcompat.app.AppCompatActivity.onStart(AppCompatActivity.java:246)
        at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1436)
        at android.app.Activity.performStart(Activity.java:8188)
        at android.app.ActivityThread.handleStartActivity(ActivityThread.java:3576)
    	at android.app.servertransaction.TransactionExecutor.
E/SBUIKIT: Cont(1) performLifecycleSequence(TransactionExecutor.java:221)
        at android.app.servertransaction.TransactionExecutor.cycleToPath(TransactionExecutor.java:201)
        at android.app.servertransaction.TransactionExecutor.executeLifecycleState(TransactionExecutor.java:173)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:97)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2146)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loop(Looper.java:236)
        at android.app.ActivityThread.main(ActivityThread.java:8057)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:656)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:967)
D/AndroidRuntime: Shutting down VM
E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.lionparcel.services.driver.stage, PID: 15275
    java.lang.NullPointerException: Attempt to read from field 'com.sendbird.uikit.widgets.MentionEditText com.sendbird.uikit.databinding.SbViewMessageInputBinding.etInputText' on a null object reference
        at com.sendbird.uikit.widgets.MessageInputView.getInputEditText(MessageInputView.java:390)
        at com.sendbird.uikit.modules.components.MessageInputComponent.onCreateView(MessageInputComponent.java:142)
        at com.sendbird.uikit.modules.ChannelModule.onCreateView(ChannelModule.java:115)
        at com.sendbird.uikit.fragments.BaseModuleFragment.onCreateView(BaseModuleFragment.java:62)
        at androidx.fragment.app.Fragment.performCreateView(Fragment.java:2995)
        at androidx.fragment.app.FragmentStateManager.createView(FragmentStateManager.java:523)
        at androidx.fragment.app.FragmentStateManager.moveToExpectedState(FragmentStateManager.java:261)
        at androidx.fragment.app.FragmentManager.executeOpsTogether(FragmentManager.java:1840)
        at androidx.fragment.app.FragmentManager.removeRedundantOperationsAndExecute(FragmentManager.java:1758)
        at androidx.fragment.app.FragmentManager.execPendingActions(FragmentManager.java:1701)
        at androidx.fragment.app.FragmentManager.dispatchStateChange(FragmentManager.java:2849)
        at androidx.fragment.app.FragmentManager.dispatchActivityCreated(FragmentManager.java:2784)
        at androidx.fragment.app.FragmentController.dispatchActivityCreated(FragmentController.java:262)
        at androidx.fragment.app.FragmentActivity.onStart(FragmentActivity.java:478)
        at androidx.appcompat.app.AppCompatActivity.onStart(AppCompatActivity.java:246)
        at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1436)
        at android.app.Activity.performStart(Activity.java:8188)
        at android.app.ActivityThread.handleStartActivity(ActivityThread.java:3576)
        at android.app.servertransaction.TransactionExecutor.performLifecycleSequence(TransactionExecutor.java:221)
        at android.app.servertransaction.TransactionExecutor.cycleToPath(TransactionExecutor.java:201)
        at android.app.servertransaction.TransactionExecutor.executeLifecycleState(TransactionExecutor.java:173)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:97)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2146)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loop(Looper.java:236)
        at android.app.ActivityThread.main(ActivityThread.java:8057)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:656)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:967)

```

* * *

// If problem, please fill out the below. If question, please delete.  
**[UIKit Version]**  
// What version of the SDK are you using?

- [v3.1.1](https://github.com/sendbird/sendbird-uikit-android/releases/tag/v3.1.1)

**[Reproduction Steps]**  
// Already Open ChannelListActivity and show list channel , when want action  
`setOnItemClickListener { _, _, channel -> showCustomChannelActivity(channel.url) }`  
on  
override fun createFragment(): ChannelListFragment {  
return ChannelListFragment.Builder(R.style.SendBird\_Custom)  
.setUseHeader(true)  
.setHeaderTitle(getString(R.string.chat\_customer))  
.setUseHeaderRightButton(true)  
.setHeaderLeftButtonIconResId(R.drawable.ics\_o\_arrow\_left\_alt)  
.setHeaderRightButtonIconResId(R.drawable.ics\_o\_setting)  
.setOnHeaderRightButtonClickListener { goToSettings() }  
.setOnItemClickListener { \_, \_, channel → showCustomChannelActivity(channel.url) }  
.setOnItemLongClickListener { \_, \_, \_ → }  
.build()  
}

Apps will crash and return error log :  
`java.lang.NullPointerException: Attempt to read from field 'com.sendbird.uikit.widgets.MentionEditText com.sendbird.uikit.databinding.SbViewMessageInputBinding.etInputText' on a null object reference`

**[Frequency]**  
// How frequently is this issue occurring?

- When Migration from 2.2.0 to 3.1.1

**[Current impact]**  
// How is this currently impacting your implementation?

- Can’t Access Channel Fragment