[MaterialCalendarGridView] NullPointerException in onDraw

[tipa]

Description: MaterialDatePicker crashes when using setSelection and MaterialCalendar as materialCalendarFullscreenTheme. The crash happens when swiping to the left after the dialog shows up.

Source code:

<item name="materialCalendarFullscreenTheme">@style/ThemeOverlay.MaterialComponents.MaterialCalendar</item>

MaterialDatePicker.Builder.dateRangePicker()
    .setSelection(new Pair(1485129600000l, 1590537600000l))
    .build()
    .show(getSupportFragmentManager(), "...");

Expected behavior: no crash

Android API version: 29

Material Library version: 1.2.0-alpha06

Device: Device on which the bug was encountered here Galaxy A10 Pixel 2 P10 lite OnePlus 7 Pro

 java.lang.NullPointerException: Attempt to invoke virtual method 'int android.view.View.getRight()' on a null object reference
        at com.google.android.material.datepicker.MaterialCalendarGridView.onDraw(MaterialCalendarGridView.java:158)
        at android.view.View.draw(View.java:21609)
        at android.widget.AbsListView.draw(AbsListView.java:4514)
        at android.view.View.updateDisplayListIfDirty(View.java:20471)
        at android.view.View.draw(View.java:21336)
        at android.view.ViewGroup.drawChild(ViewGroup.java:4413)
        at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4174)
        at android.view.View.updateDisplayListIfDirty(View.java:20462)
        at android.view.View.draw(View.java:21336)
        at android.view.ViewGroup.drawChild(ViewGroup.java:4413)
        at androidx.recyclerview.widget.RecyclerView.drawChild(RecyclerView.java:5030)
        at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4174)
        at android.view.View.draw(View.java:21612)
        at androidx.recyclerview.widget.RecyclerView.draw(RecyclerView.java:4429)
        at android.view.View.updateDisplayListIfDirty(View.java:20471)
        at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:4397)
        at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:4370)
        at android.view.View.updateDisplayListIfDirty(View.java:20431)
        at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:4397)
        at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:4370)
        at android.view.View.updateDisplayListIfDirty(View.java:20431)
        at android.view.View.draw(View.java:21336)
        at android.view.ViewGroup.drawChild(ViewGroup.java:4413)
        at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4174)
        at android.view.View.updateDisplayListIfDirty(View.java:20462)
        at android.view.View.draw(View.java:21336)
        at android.view.ViewGroup.drawChild(ViewGroup.java:4413)
        at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4174)
        at android.view.View.updateDisplayListIfDirty(View.java:20462)
        at android.view.View.draw(View.java:21336)
        at android.view.ViewGroup.drawChild(ViewGroup.java:4413)
        at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4174)
        at android.view.View.updateDisplayListIfDirty(View.java:20462)
        at android.view.View.draw(View.java:21336)
        at android.view.ViewGroup.drawChild(ViewGroup.java:4413)
        at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4174)
        at android.view.View.updateDisplayListIfDirty(View.java:20462)
        at android.view.View.draw(View.java:21336)
        at android.view.ViewGroup.drawChild(ViewGroup.java:4413)
        at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4174)
        at android.view.View.updateDisplayListIfDirty(View.java:20462)
        at android.view.View.draw(View.java:21336)
        at android.view.ViewGroup.drawChild(ViewGroup.java:4413)
        at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4174)
        at android.view.View.updateDisplayListIfDirty(View.java:20462)
        at android.view.View.draw(View.java:21336)
        at android.view.ViewGroup.drawChild(ViewGroup.java:4413)
        at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4174)
        at android.view.View.draw(View.java:21612)
        at com.android.internal.policy.DecorView.draw(DecorView.java:815)
        at android.view.View.updateDisplayListIfDirty(View.java:20471)
        at android.view.ThreadedRenderer.updateViewTreeDisplayList(ThreadedRenderer.java:580)
        at android.view.ThreadedRenderer.updateRootDisplayList(ThreadedRenderer.java:586)
        at android.view.ThreadedRenderer.draw(ThreadedRenderer.java:659)
        at android.view.ViewRootImpl.draw(ViewRootImpl.java:3876)
        at android.view.ViewRootImpl.performDraw(ViewRootImpl.java:3676)
        at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2998)
        at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1935)
        at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:8023)
        at android.view.Choreographer$CallbackRecord.run(Choreographer.java:1163)
        at android.view.Choreographer.doCallbacks(Choreographer.java:986)
        at android.view.Choreographer.doFrame(Choreographer.java:902)```

[ph3mmy]

I just experienced this on the android Emulator with API level 29 as well

[Armen101]

I have the same issue. Please fix it ASAP

[Armen101]

I use ''com.google.android.material:material:1.1.0''

[Armen101]

I also want to add a comment when I open the application with the French language everything is correct, it happens when I use English

[mikedirin]

I see this bug as well. If a date range is set from today to three months later and open the calendar dialog, as soon as swipe to right fast the crash happens. Looks like it happens on 9, was not able to reproduce it on api 23

[ryancphil]

I can reproduce this is 1.3.0-alpha01 as well.

[ymarian]

Should be fixed please try on the latest snapshot

https://github.com/material-components/material-components-android/blob/master/docs/using-snapshot-version.md

[SashaCube]

I'm receiving similar crashes, using version "1.3.0"

I don't have steps to reproduce it, but they occurred on different devices (HUAWEI, Xiaomi, Samsung, OnePlus) with different android versions (10, 9, 8.1, 8.0). Maybe there is a trick with language, most users are using 'fr'.

source:

private fun showDatePicker(from: DateTime, to: DateTime, onSubmit: (DateTime, DateTime) -> Unit) {
        val datePicker = MaterialDatePicker.Builder.dateRangePicker()
        datePicker.setSelection(Pair(from.millis, to.millis))
        val dialog = datePicker.build()
        dialog.addOnPositiveButtonClickListener {
            onSubmit(DateTime(it.first), DateTime(it.second))
        }
        dialog.show(parentFragmentManager, dialog.javaClass.simpleName)
    }

stack trace:

Fatal Exception: java.lang.NullPointerException: Attempt to invoke virtual method 'int android.view.View.getLeft()' on a null object reference
       at com.google.android.material.datepicker.MaterialCalendarGridView.horizontalMidPoint(MaterialCalendarGridView.java)
       at com.google.android.material.datepicker.MaterialCalendarGridView.onDraw(MaterialCalendarGridView.java:221)
       at android.view.View.draw(View.java:23187)
       at android.widget.AbsListView.draw(AbsListView.java:7190)
       at android.view.View.updateDisplayListIfDirty(View.java:22062)
       at android.view.View.draw(View.java:22917)
       at android.view.ViewGroup.drawChild(ViewGroup.java:5230)
       at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4987)
       at android.view.View.updateDisplayListIfDirty(View.java:22048)
       at android.view.View.draw(View.java:22917)
       at android.view.ViewGroup.drawChild(ViewGroup.java:5230)
       at androidx.recyclerview.widget.RecyclerView.drawChild(RecyclerView.java)
       at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4987)
       at android.view.View.draw(View.java:23190)
       at androidx.recyclerview.widget.RecyclerView.draw(RecyclerView.java)
       at android.view.View.updateDisplayListIfDirty(View.java:22062)
       at android.view.View.draw(View.java:22917)
       at android.view.ViewGroup.drawChild(ViewGroup.java:5230)
       at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4987)
       at android.view.View.updateDisplayListIfDirty(View.java:22048)
       at android.view.View.draw(View.java:22917)
       at android.view.ViewGroup.drawChild(ViewGroup.java:5230)
       at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4987)
       at android.view.View.updateDisplayListIfDirty(View.java:22048)
       at android.view.View.draw(View.java:22917)
       at android.view.ViewGroup.drawChild(ViewGroup.java:5230)
       at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4987)
       at android.view.View.updateDisplayListIfDirty(View.java:22048)
       at android.view.View.draw(View.java:22917)
       at android.view.ViewGroup.drawChild(ViewGroup.java:5230)
       at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4987)
       at android.view.View.updateDisplayListIfDirty(View.java:22048)
       at android.view.View.draw(View.java:22917)
       at android.view.ViewGroup.drawChild(ViewGroup.java:5230)
       at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4987)
       at android.view.View.updateDisplayListIfDirty(View.java:22048)
       at android.view.View.draw(View.java:22917)
       at android.view.ViewGroup.drawChild(ViewGroup.java:5230)
       at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4987)
       at android.view.View.updateDisplayListIfDirty(View.java:22048)
       at android.view.View.draw(View.java:22917)
       at android.view.ViewGroup.drawChild(ViewGroup.java:5230)
       at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4987)
       at android.view.View.updateDisplayListIfDirty(View.java:22048)
       at android.view.View.draw(View.java:22917)
       at android.view.ViewGroup.drawChild(ViewGroup.java:5230)
       at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4987)
       at android.view.View.updateDisplayListIfDirty(View.java:22048)
       at android.view.View.draw(View.java:22917)
       at android.view.ViewGroup.drawChild(ViewGroup.java:5230)
       at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4987)
       at android.view.View.draw(View.java:23190)
       at com.android.internal.policy.DecorView.draw(DecorView.java:1154)
       at android.view.View.updateDisplayListIfDirty(View.java:22062)
       at android.view.ThreadedRenderer.updateViewTreeDisplayList(ThreadedRenderer.java:588)
       at android.view.ThreadedRenderer.updateRootDisplayList(ThreadedRenderer.java:594)
       at android.view.ThreadedRenderer.draw(ThreadedRenderer.java:667)
       at android.view.ViewRootImpl.draw(ViewRootImpl.java:4296)
       at android.view.ViewRootImpl.performDraw(ViewRootImpl.java:4080)
       at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:3348)
       at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:2225)