Question

我有一个选项卡式页面，其中有5个视图控制器作为子级。在初始化时，将出现第一个子项，然后，如果我导航到另一页并移回第一页，然后再次导航到另一页，则应用程序崩溃。

这是我的标签页：

<TabbedPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:android="clr-namespace:Xamarin.Forms.PlatformConfiguration.AndroidSpecific;assembly=Xamarin.Forms.Core"
             android:TabbedPage.ToolbarPlacement="Bottom"
             android:TabbedPage.BarItemColor="#66FFFFFF"
             android:TabbedPage.BarSelectedItemColor="White"
             BarBackgroundColor="#00abbf"
             NavigationPage.HasNavigationBar="False"
             x:Class="project.App.Common.Views.Dashboard.dashboardview">

</TabbedPage>

这是我后面的选项卡式页面代码：

                var view1= new View1{ Icon= "icon.png" };

                var view2 = new View2 { Icon = "icon.png" };

                var view3= new View3 { Icon="icon.png" };

                var view4= new View4 { Icon = "icon.png" };

                var view5 = new View5 { Icon = "icon.png"  };


                Children.Add(view1);

                Children.Add(view2);

                Children.Add(view3);

                Children.Add(view4);

                Children.Add(view5);

在应用启动时，先加载view1，然后转到view2，然后导航回到view1，然后再次移至view2，应用程序崩溃了。

崩溃日志是：

No package identifier when getting name for resource number 0x00000005
No view found for id 0x5 (unknown) for fragment FragmentContainer{f99bdc5 #0 id=0x5 android:switcher:5:629936758}
Activity state:
  Local Activity e5cedd4 State:
    mResumed=true mStopped=false mFinished=false
    mChangingConfigurations=false
    mCurrentConfig={1.07 404mcc7mnc en_US ldltr sw360dp w360dp h616dp 240dpi nrml long port finger -keyb/v/h -nav/h s.370 themeId=0, affectGlobal:true}
    mLoadersStarted=true
    Active Fragments in 46948a7:
      #0: ReportFragment{d210154 #0 android.arch.lifecycle.LifecycleDispatcher.report_fragment_tag}
        mFragmentId=#0 mContainerId=#0 mTag=android.arch.lifecycle.LifecycleDispatcher.report_fragment_tag
        mState=5 mIndex=0 mWho=android:fragment:0 mBackStackNesting=0
        mAdded=true mRemoving=false mResumed=true mFromLayout=false mInLayout=false
        mHidden=false mDetached=false mMenuVisible=true mHasMenu=false
        mRetainInstance=false mRetaining=false mUserVisibleHint=true
        mFragmentManager=FragmentManager{46948a7 in HostCallbacks{6d58fd}}
        mHost=android.app.Activity$HostCallbacks@6d58fd
        Child FragmentManager{5a29f2 in ReportFragment{d210154}}:
          FragmentManager misc state:
            mHost=android.app.Activity$HostCallbacks@6d58fd
            mContainer=android.app.Fragment$1@257c843
            mParent=ReportFragment{d210154 #0 android.arch.lifecycle.LifecycleDispatcher.report_fragment_tag}
            mCurState=5 mStateSaved=false mDestroyed=false
    Added Fragments:
      #0: ReportFragment{d210154 #0 android.arch.lifecycle.LifecycleDispatcher.report_fragment_tag}
    FragmentManager misc state:
      mHost=android.app.Activity$HostCallbacks@6d58fd
      mContainer=android.app.Activity$HostCallbacks@6d58fd
      mCurState=5 mStateSaved=false mDestroyed=false
  ViewRoot:
    mAdded=true mRemoved=false
    mConsumeBatchedInputScheduled=true
    mConsumeBatchedInputImmediatelyScheduled=false
    mPendingInputEventCount=0
    mProcessInputEventsScheduled=false
    mTraversalScheduled=true (barrier=76)
    android.view.ViewRootImpl$NativePreImeInputStage: mQueueLength=0
    android.view.ViewRootImpl$ImeInputStage: mQueueLength=0
    android.view.ViewRootImpl$NativePostImeInputStage: mQueueLength=0
  Choreographer:
    mFrameScheduled=true
    mLastFrameTime=119331759 (84 ms ago)

不知道为什么会这样。我使用的是XF 3.4.0，孩子是正常的内容页面。

有人可以帮我吗？

谢谢。

“第二次点击转到根控制器”事件上的TabbedPage应用崩溃

0 个答案: