Stuck on an issue?

Lightrun Answers was designed to reduce the constant googling that comes with debugging 3rd party libraries. It collects links to all the places you might be looking at while hunting down a tough bug.

And, if you’re still stuck at the end, we’re happy to hop on a call to see how we can help out.

Android - App crashes with ReactRootView inside viewpager

See original GitHub issue

Is this a bug report?

Yes

Have you read the Contributing Guidelines?

Yes

Environment

Steps to Reproduce

(Write your steps here:)

Create a native ViewPager with a ReactRootView as content, preferably with some images inside the ReactRootView
Swipe fast
See this stack trace

Expected Behavior

I would expect no stack trace or errors to occur.

Actual Behavior

Fatal Exception: java.lang.NullPointerException: Attempt to invoke interface method 'void com.facebook.react.uimanager.ReactShadowNode.addChildAt(com.facebook.react.uimanager.ReactShadowNode, int)' on a null object reference
       at com.facebook.react.uimanager.UIImplementation.setChildren(UIImplementation.java:472)
       at com.facebook.react.uimanager.UIManagerModule.setChildren(UIManagerModule.java:436)
       at java.lang.reflect.Method.invoke(Method.java)
       at com.facebook.react.bridge.JavaMethodWrapper.invoke(JavaMethodWrapper.java:374)
       at com.facebook.react.bridge.JavaModuleWrapper.invoke(JavaModuleWrapper.java:162)
       at com.facebook.react.bridge.queue.NativeRunnable.run(NativeRunnable.java)
       at android.os.Handler.handleCallback(Handler.java:739)
       at android.os.Handler.dispatchMessage(Handler.java:95)
       at com.facebook.react.bridge.queue.MessageQueueThreadHandler.dispatchMessage(MessageQueueThreadHandler.java:31)
       at android.os.Looper.loop(Looper.java:158)
       at com.facebook.react.bridge.queue.MessageQueueThreadImpl$3.run(MessageQueueThreadImpl.java:194)
       at java.lang.Thread.run(Thread.java:818)

This occurs after swiping through the ViewPager quickly.

Reproducible Demo

Proposed fix: Below this line of code: Add the same fix as this one

Issue Analytics

State:
Created 6 years ago
Reactions:10
Comments:7 (2 by maintainers)

Top GitHub Comments

13reactions

stale[bot]commented, Feb 20, 2018

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Maybe the issue has been fixed in a recent release, or perhaps it is not affecting a lot of people. If you think this issue should definitely remain open, please let us know why. Thank you for your contributions.

2reactions

mac-cain13commented, Mar 1, 2018

Think this issue is still relevant and even a fix is proposed. Is there anyone from the team that can apply this fix or confirm that this fix would be the right thing to do so someone else can create a PR?

Top Results From Across the Web

App Crashes on using Tab Views in Android - Stack Overflow

Add these lines to your activity's theme in styles.xml <item name="windowActionBar">false</item> <item name="windowNoTitle">true</item>.

ViewPager NullPointerException when onPause is called from ...

I have tried all imposible solution but my app still crash...

Developers - V8 Runtime platform crash issue - - Bountysource

For Android，I embed V8 into ReactNative Sdk, And Found an issue. 1. Environment: ViewPager with Two Fragment：Fragment A & Fragment B, Every Fragment...

react-native | Yarn - Package Manager

5 vulnerabilities. A framework for building native apps using React ... React Native brings React's declarative UI framework to iOS and Android.

React Native March 2018 (v0.55.0) released

Android specific fixes. Fix: incorrect line-height calculation (74e54cb by @strindhaug); Fix crashes with TextInput introduced in 0.53 ...