4,152 questions
App is crashing and getting Java.Lang.IllegalArgumentException: Cannot setMaxLifecycle for Fragment not attached to FragmentManager
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(32, 15%, 13%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ES%3C/text%3E%3C/svg%3E)
Satya
160
Reputation points
App is crashing some times and i am not able to find the root cause. Can anyone tell me by seeing the below crash log details and code for customtabrenderer
BottomBarTabbedPage is a custom control inheriting tabbedpage
Added a CompatibilityRenderer in ConfigureMauiHandlers in MauiProgram.cs
handlers.AddCompatibilityRenderer(typeof(BottomBarTabbedPage), typeof(CustomTabbedPageRenderer));
Thanks in advance.
public class CustomTabbedPageRenderer : TabbedPageRenderer, NavigationBarView.IOnItemSelectedListener
{
private int bottomBarHeight = 0;
private string lastPageTitle = "";
private long lastRecoredTime = SystemClock.ElapsedRealtime();
public CustomTabbedPageRenderer(Context context) : base(context)
{
}
bool NavigationBarView.IOnItemSelectedListener.OnNavigationItemSelected(IMenuItem item)
{
if (lastPageTitle == item.TitleFormatted.ToString() && SystemClock.ElapsedRealtime() - lastRecoredTime >= 1000)
{
Element.CurrentPage.Navigation.PopToRootAsync().ConfigureAwait(true);
}
lastPageTitle = item.TitleFormatted.ToString();
lastRecoredTime = SystemClock.ElapsedRealtime();
return base.OnNavigationItemSelected(item); ;
}
protected override void OnElementChanged(ElementChangedEventArgs<TabbedPage> e)
{
base.OnElementChanged(e);
if (e.OldElement == null && e.NewElement != null)
{
BottomNavigationView bottomNavigationView = GetBottomBar();
if (bottomNavigationView != null)
{
bottomBarHeight = bottomNavigationView.Height;
}
AdjustTabColors();
}
}
protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
{
base.OnElementPropertyChanged(sender, e);
if (e.PropertyName == nameof(TabbedPage.CurrentPage))
{
AdjustTabColors();
}
else if (e.PropertyName == BottomBarTabbedPage.IsBottomBarVisibleProperty.PropertyName)
{
var bottomBar = GetBottomBar();
if (bottomBar != null && sender is BottomBarTabbedPage)
{
var parameters = bottomBar.LayoutParameters;
if (bottomBarHeight == 0)
{
bottomBarHeight = bottomBar.Height;
}
parameters.Height = (sender as BottomBarTabbedPage).IsBottomBarVisible ? bottomBarHeight : 0;
bottomBar.LayoutParameters = parameters;
}
}
}
private void AdjustTabColors()
{
var bottomBar = GetBottomBar();
if (bottomBar != null)
{
int childCount = bottomBar.ChildCount;
for (int k = 0; k < childCount; k++)
{
Android.Views.View view = bottomBar.GetChildAt(k);
ViewGroup bottomMenuView = (ViewGroup)view;
int menuChild = bottomMenuView.ChildCount;
for (int l = 0; l < menuChild; l++)
{
Android.Views.View view1 = bottomMenuView.GetChildAt(l);
NavigationBarItemView itemView = (NavigationBarItemView)view1;
if (itemView.ItemData.IsChecked)
{
lastPageTitle = itemView.ItemData.TitleFormatted.ToString();
view1.SetBackgroundColor(Android.Graphics.Color.ParseColor(AppColors.White));
}
else
{
view1.SetBackgroundColor(Android.Graphics.Color.ParseColor(AppColors.White));
}
}
}
}
}
public override int ChildCount => base.ChildCount;
private BottomNavigationView GetBottomBar()
{
for (int i = 0; i <= ChildCount - 1; i++)
{
var childView = this.GetChildAt(i);
if (childView is ViewGroup viewGroup)
{
for (int j = 0; j <= viewGroup.ChildCount - 1; j++)
{
var childRelativeLayoutView = viewGroup.GetChildAt(j);
if (childRelativeLayoutView is BottomNavigationView)
{
var bottomBar = (BottomNavigationView)childRelativeLayoutView;
return bottomBar;
}
}
}
}
return null;
}
}
androidx.fragment.app.BackStackRecord.setMaxLifecycle
BackStackRecord.java, line 260
Java.Lang.IllegalArgumentException: Cannot setMaxLifecycle for Fragment not attached to FragmentManager FragmentManager{6c265b8 in null}}
Java.Lang.IllegalArgumentException: Cannot setMaxLifecycle for Fragment not attached to FragmentManager FragmentManager{f7964e2 in null}}
at Java.Interop.JniEnvironment.InstanceMethods.CallNonvirtualVoidMethod(JniObjectReference , JniObjectReference , JniMethodInfo , JniArgumentValue* )
at Java.Interop.JniPeerMembers.JniInstanceMethods.InvokeVirtualVoidMethod(String , IJavaPeerable , JniArgumentValue* )
at AndroidX.ViewPager.Widget.ViewPager.SetCurrentItem(Int32 , Boolean )
at Microsoft.Maui.Controls.Compatibility.Platform.Android.AppCompat.TabbedPageRenderer.ScrollToCurrentPage()
at Microsoft.Maui.Controls.Compatibility.Platform.Android.AppCompat.TabbedPageRenderer.OnElementPropertyChanged(Object , PropertyChangedEventArgs )
at TLM.NextGenMobileApp.Droid.Renderers.CustomTabbedPageRenderer.OnElementPropertyChanged(Object sender, PropertyChangedEventArgs e)
at Microsoft.Maui.Controls.BindableObject.OnPropertyChanged(String propertyName)
at Microsoft.Maui.Controls.Element.OnPropertyChanged(String propertyName)
at Microsoft.Maui.Controls.MultiPage`1[[Microsoft.Maui.Controls.Page, Microsoft.Maui.Controls, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].OnPropertyChanged(String propertyName)
at Microsoft.Maui.Controls.MultiPage`1[[Microsoft.Maui.Controls.Page, Microsoft.Maui.Controls, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].set_CurrentPage(Page value)
at Microsoft.Maui.Controls.Compatibility.Platform.Android.AppCompat.TabbedPageRenderer.OnNavigationItemSelected(IMenuItem )
at TLM.NextGenMobileApp.Droid.Renderers.CustomTabbedPageRenderer.Google.Android.Material.Navigation.NavigationBarView.IOnItemSelectedListener.OnNavigationItemSelected(IMenuItem item)
at Google.Android.Material.Navigation.NavigationBarView.IOnItemSelectedListenerInvoker.n_OnNavigationItemSelected_Landroid_view_MenuItem_(IntPtr , IntPtr , IntPtr )
at Android.Runtime.JNINativeWrapper.Wrap_JniMarshal_PPL_Z(_JniMarshal_PPL_Z , IntPtr , IntPtr , IntPtr )
at java.lang.IllegalArgumentException: Cannot setMaxLifecycle for Fragment not attached to FragmentManager FragmentManager{f7964e2 in null}}
at androidx.fragment.app.BackStackRecord.setMaxLifecycle(BackStackRecord.java:260)
at androidx.fragment.app.FragmentPagerAdapter.setPrimaryItem(FragmentPagerAdapter.java:219)
at androidx.viewpager.widget.ViewPager.populate(ViewPager.java:1234)
at androidx.viewpager.widget.ViewPager.setCurrentItemInternal(ViewPager.java:669)
at androidx.viewpager.widget.ViewPager.setCurrentItemInternal(ViewPager.java:631)
at androidx.viewpager.widget.ViewPager.setCurrentItem(ViewPager.java:623)
at crc6438b0a6d327492b0a.CustomTabbedPageRenderer.n_onNavigationItemSelected(Native Method)
at crc6438b0a6d327492b0a.CustomTabbedPageRenderer.onNavigationItemSelected(CustomTabbedPageRenderer.java:58)
at com.google.android.material.navigation.NavigationBarView$1.onMenuItemSelected(NavigationBarView.java:291)
at androidx.appcompat.view.menu.MenuBuilder.dispatchMenuItemSelected(MenuBuilder.java:836)
at androidx.appcompat.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:159)
at androidx.appcompat.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:987)
at com.google.android.material.navigation.NavigationBarMenuView$1.onClick(NavigationBarMenuView.java:139)
at android.view.View.performClick(View.java:8160)
at android.view.View.performClickInternal(View.java:8137)
at android.view.View.access$3700(View.java:888)
at android.view.View$PerformClick.run(View.java:30236)
at android.os.Handler.handleCallback(Handler.java:938)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:246)
at android.app.ActivityThread.main(ActivityThread.java:8615)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:602)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1130)
Developer technologies .NET .NET MAUI
{count} votes
-
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(316.8, 40%, 40%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EYL%3C/text%3E%3C/svg%3E)
Yonglun Liu (Shanghai Wicresoft Co,.Ltd.) 50,126 Reputation points Microsoft External Staff2023-08-28T05:44:44.8+00:00 According to the error message, this should be caused by a null pointer in the TabbedPage.
To investigate further, could you please provide a minimized snippet of BottomBarTabbedPage, and how you do call CustomTabbedPageRenderer in MAUI and update it to the question?
Your prompt reply will be highly appreciated.
-
Satya 160 Reputation points
2023-08-28T06:18:07.3633333+00:00 @Yonglun Liu (Shanghai Wicresoft Co,.Ltd.)
Thanks for the quick reply.
I have added more code, Please check and let me know if you need anything
Added a CompatibilityRenderer in ConfigureMauiHandlers in MauiProgram.cs
handlers.AddCompatibilityRenderer(typeof(BottomBarTabbedPage), typeof(CustomTabbedPageRenderer));
BottomBarTabbedPage control
public partial class BottomBarTabbedPage : TabbedPage { public static readonly BindableProperty IsBottomBarVisibleProperty = BindableProperty.Create(propertyName: nameof(IsBottomBarVisible), typeof(bool), typeof(BottomBarTabbedPage), defaultBindingMode: BindingMode.TwoWay, defaultValue: true); public bool IsBottomBarVisible { get { return (bool)GetValue(IsBottomBarVisibleProperty); } set { SetValue(IsBottomBarVisibleProperty, value); } } public static readonly BindableProperty IOSViewDidLayoutSubviewsProperty = BindableProperty.Create(propertyName: nameof(IOSViewDidLayoutSubviews), typeof(bool), typeof(BottomBarTabbedPage), defaultBindingMode: BindingMode.TwoWay, defaultValue: false); public bool IOSViewDidLayoutSubviews { get { return (bool)GetValue(IOSViewDidLayoutSubviewsProperty); } set { SetValue(IOSViewDidLayoutSubviewsProperty, value); } } public BottomBarTabbedPage() { InitializeComponent(); } }<?xml version="1.0" encoding="utf-8" ?> <page:BaseBottomBarTabbedPage x:Class="MyApp.Mobile.Pages.Home.HomePage" xmlns="http://schemas.microsoft.com/dotnet/2021/maui" xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" xmlns:android="clr-namespace:Microsoft.Maui.Controls.PlatformConfiguration.AndroidSpecific;assembly=Microsoft.Maui.Controls" xmlns:controls="clr-namespace:MyApp.Mobile.Controls" xmlns:ios="clr-namespace:Microsoft.Maui.Controls.PlatformConfiguration.iOSSpecific;assembly=Microsoft.Maui.Controls" xmlns:page="clr-namespace:MyApp.Mobile.Pages;assembly=MyApp.Mobile" android:TabbedPage.IsSwipePagingEnabled="False" android:TabbedPage.ToolbarPlacement="Bottom" ios:Page.UseSafeArea="True" BindingContext="{Binding HomeViewModel, Source={StaticResource viewModelLocator}}" CurrentPageChanged="BottomBarTabbedPage_CurrentPageChanged" NavigationPage.HasBackButton="False" NavigationPage.HasNavigationBar="False" Style="{StaticResource TabbedPageStyle}" /> -
Yonglun Liu (Shanghai Wicresoft Co,.Ltd.) 50,126 Reputation points Microsoft External Staff
2023-08-29T05:53:52.2133333+00:00 I have tested it on Android 28 to 33 and the program does not crash.
I noticed that your problem happens sometimes. Could you please give a detailed reproduction process of the problem?
I noticed that your problem happens sometimes. Could you please give a detailed reproduction process of the problem?
-
Satya 160 Reputation points
2023-08-29T12:04:26.89+00:00 Crash Log was there in Appcenter and not able to replicate the issue locally as well.
As i mentioned i don't know the root cause.
-
Yonglun Liu (Shanghai Wicresoft Co,.Ltd.) 50,126 Reputation points Microsoft External Staff
2023-08-30T05:20:01.8633333+00:00 For problems with constructing programs on AppCenter, it is recommended that you refer to Accessing App Center Free Support for free support of AppCenter.
Sign in to comment
Sign in to answer