NullPointerException report

[aveuiller]

A bug has been reported on production:

• App version: 6 (2.0.0)
• Api level: 24
• phone model: P028
• Time: 9 févr. 2018 à 15:45:20

 Exception java.lang.NullPointerException: Attempt to invoke interface method 'int com.github.mikephil.charting.interfaces.datasets.IDataSet.getEntryIndex(com.github.mikephil.charting.data.Entry)' on a null object reference
com.github.mikephil.charting.charts.Chart.drawMarkers (Chart.java:732)
com.github.mikephil.charting.charts.BarLineChartBase.onDraw (BarLineChartBase.java:271)
android.view.View.draw (View.java:17320)
android.view.View.updateDisplayListIfDirty (View.java:16259)
android.view.ViewGroup.recreateChildDisplayList (ViewGroup.java:3874)
android.view.ViewGroup.dispatchGetDisplayList (ViewGroup.java:3854)
android.view.View.updateDisplayListIfDirty (View.java:16213)
android.view.ViewGroup.recreateChildDisplayList (ViewGroup.java:3874)
android.view.ViewGroup.dispatchGetDisplayList (ViewGroup.java:3854)
android.view.View.updateDisplayListIfDirty (View.java:16213)
android.view.ViewGroup.recreateChildDisplayList (ViewGroup.java:3874)
android.view.ViewGroup.dispatchGetDisplayList (ViewGroup.java:3854)
android.view.View.updateDisplayListIfDirty (View.java:16213)
android.view.ViewGroup.recreateChildDisplayList (ViewGroup.java:3874)
android.view.ViewGroup.dispatchGetDisplayList (ViewGroup.java:3854)
android.view.View.updateDisplayListIfDirty (View.java:16213)
android.view.ViewGroup.recreateChildDisplayList (ViewGroup.java:3874)
android.view.ViewGroup.dispatchGetDisplayList (ViewGroup.java:3854)
android.view.View.updateDisplayListIfDirty (View.java:16213)
android.view.ViewGroup.recreateChildDisplayList (ViewGroup.java:3874)
android.view.ViewGroup.dispatchGetDisplayList (ViewGroup.java:3854)
android.view.View.updateDisplayListIfDirty (View.java:16213)
android.view.ViewGroup.recreateChildDisplayList (ViewGroup.java:3874)
android.view.ViewGroup.dispatchGetDisplayList (ViewGroup.java:3854)
android.view.View.updateDisplayListIfDirty (View.java:16213)
android.view.ViewGroup.recreateChildDisplayList (ViewGroup.java:3874)
android.view.ViewGroup.dispatchGetDisplayList (ViewGroup.java:3854)
android.view.View.updateDisplayListIfDirty (View.java:16213)
android.view.ViewGroup.recreateChildDisplayList (ViewGroup.java:3874)
android.view.ViewGroup.dispatchGetDisplayList (ViewGroup.java:3854)
android.view.View.updateDisplayListIfDirty (View.java:16213)
android.view.ViewGroup.recreateChildDisplayList (ViewGroup.java:3874)
android.view.ViewGroup.dispatchGetDisplayList (ViewGroup.java:3854)
android.view.View.updateDisplayListIfDirty (View.java:16213)
android.view.ViewGroup.recreateChildDisplayList (ViewGroup.java:3874)
android.view.ViewGroup.dispatchGetDisplayList (ViewGroup.java:3854)
android.view.View.updateDisplayListIfDirty (View.java:16213)
android.view.View.draw (View.java:17070)
android.view.ViewGroup.drawChild (ViewGroup.java:3890)
android.view.ViewGroup.dispatchDraw (ViewGroup.java:3676)
com.android.internal.policy.DecorView.dispatchDraw (DecorView.java:792)
android.view.View.draw (View.java:17332)
com.android.internal.policy.DecorView.draw (DecorView.java:778)
android.view.View.updateDisplayListIfDirty (View.java:16259)
android.view.ThreadedRenderer.updateViewTreeDisplayList (ThreadedRenderer.java:661)
android.view.ThreadedRenderer.updateRootDisplayList (ThreadedRenderer.java:667)
android.view.ThreadedRenderer.draw (ThreadedRenderer.java:775)
android.view.ViewRootImpl.draw (ViewRootImpl.java:3196)
android.view.ViewRootImpl.performDraw (ViewRootImpl.java:2989)
android.view.ViewRootImpl.performTraversals (ViewRootImpl.java:2569)
android.view.ViewRootImpl.doTraversal (ViewRootImpl.java:1462)
android.view.ViewRootImpl$TraversalRunnable.run (ViewRootImpl.java:6973)
android.view.Choreographer$CallbackRecord.run (Choreographer.java:907)
android.view.Choreographer.doCallbacks (Choreographer.java:709)
android.view.Choreographer.doFrame (Choreographer.java:644)
android.view.Choreographer$FrameDisplayEventReceiver.run (Choreographer.java:893)
android.os.Handler.handleCallback (Handler.java:836)
android.os.Handler.dispatchMessage (Handler.java:103)
android.os.Looper.loop (Looper.java:208)
android.app.ActivityThread.main (ActivityThread.java:6304)

[kaal-dam]

whaou, interesting, seems to be an internal api error since i don't see any error line from one of our class.

can we have more information about this issue like what are you trying to do when it appears ?

[aveuiller]

Hello,

Sorry but I can't tell you more since I'm only managing the application production. This error has been reported on our Firebase dashboard.

[aoudiamoncef]

Hello,
This is known issue in MPAndroidChart:
PhilJay/MPAndroidChart#2917

[aoudiamoncef]

This issue happens to me when I remove the line where the marker is on at the moment.
I managed to get around this bug by .setDrawMarkers(false); on chart creation and only doing .setDrawMarkers(true); inside onValueSelected()
fixed on f5f5f19

[SwordBearer]

When I show a MarkerView first , and then I show the a empty ArrayList , This crash happened.
So before i show the data, if the dataset is empty, just call
mpChart.setDrawMarkers(false); to disable the marker-view

[rouvoy]

Can you provide some more information or ideally submit a pull request?