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[MaterialCalendarGridView] NullPointerException in onDraw

See original GitHub issue

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)```

Issue Analytics

State:
Created 3 years ago
Comments:8 (1 by maintainers)

Top GitHub Comments

3reactions

SashaCubecommented, Mar 30, 2021

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)

1reaction

ph3mmycommented, Jun 1, 2020

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

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