我正在开发 Xamarin Forms(表单版本:2.3.4.231)项目。
该应用程序在 iOS 中运行良好,而在 Android 中则随机崩溃。从崩溃日志来看,这似乎是内部崩溃,但我不知道从哪里开始。
我知道应用程序中没有足够的信息。但有人可以帮助我更好地理解这个问题吗?
这是崩溃日志:
11/07/2017 PM 12:33:13.216: Cannot access a disposed object.
Object name: 'Xamarin.Forms.Platform.Android.FormsTextView'. at Java.Interop.JniPeerMembers.AssertSelf (Java.Interop.IJavaPeerable self) [0x00030] in <b1a275385773449f855cd147e39ca2c4>:0
at Java.Interop.JniPeerMembers+JniInstanceMethods.InvokeNonvirtualVoidMethod (System.String encodedMember, Java.Interop.IJavaPeerable self, Java.Interop.JniArgumentValue* parameters) [0x00001] in <b1a275385773449f855cd147e39ca2c4>:0
at Android.Widget.TextView.set_TextFormatted (Java.Lang.ICharSequence value) [0x00028] in <37dcd078418a4ced956136dfaeb51ee2>:0
at Android.Widget.TextView.set_Text (System.String value) [0x00013] in <37dcd078418a4ced956136dfaeb51ee2>:0
at Xamarin.Forms.Platform.Android.LabelRenderer.UpdateText () [0x00098] in <1481f85a917c4f2b882ea161e9bc082f>:0
at Xamarin.Forms.Platform.Android.LabelRenderer.OnElementPropertyChanged (System.Object sender, System.ComponentModel.PropertyChangedEventArgs e) [0x000c5] in <1481f85a917c4f2b882ea161e9bc082f>:0
at (wrapper delegate-invoke) <Module>:invoke_void_object_PropertyChangedEventArgs (object,System.ComponentModel.PropertyChangedEventArgs)
at Xamarin.Forms.BindableObject.OnPropertyChanged (System.String propertyName) [0x00012] in <0f1ce60dbc6b4e24af01294c7acf41c6>:0
at Xamarin.Forms.Element.OnPropertyChanged (System.String propertyName) [0x00000] in <0f1ce60dbc6b4e24af01294c7acf41c6>:0
at Xamarin.Forms.BindableObject.SetValueActual (Xamarin.Forms.BindableProperty property, Xamarin.Forms.BindableObject+BindablePropertyContext context, System.Object value, System.Boolean currentlyApplying, Xamarin.Forms.BindableObject+SetValueFlags attributes, System.Boolean silent) [0x000fb] in <0f1ce60dbc6b4e24af01294c7acf41c6>:0
at Xamarin.Forms.BindableObject.SetValueCore (Xamarin.Forms.BindableProperty property, System.Object value, Xamarin.Forms.BindableObject+SetValueFlags attributes, Xamarin.Forms.BindableObject+SetValuePrivateFlags privateAttributes) [0x0015b] in <0f1ce60dbc6b4e24af01294c7acf41c6>:0
at Xamarin.Forms.BindingExpression.ApplyCore (System.Object sourceObject, Xamarin.Forms.BindableObject target, Xamarin.Forms.BindableProperty property, System.Boolean fromTarget) [0x001f9] in <0f1ce60dbc6b4e24af01294c7acf41c6>:0
at Xamarin.Forms.BindingExpression.Apply (System.Boolean fromTarget) [0x0003e] in <0f1ce60dbc6b4e24af01294c7acf41c6>:0
at Xamarin.Forms.BindingExpression+BindingExpressionPart.<PropertyChanged>b__47_0 () [0x00000] in <0f1ce60dbc6b4e24af01294c7acf41c6>:0
at Java.Lang.Thread+RunnableImplementor.Run () [0x0000b] in <37dcd078418a4ced956136dfaeb51ee2>:0
at Java.Lang.IRunnableInvoker.n_Run (System.IntPtr jnienv, System.IntPtr native__this) [0x00009] in <37dcd078418a4ced956136dfaeb51ee2>:0
at (wrapper dynamic-method) System.Object:0cbcd7f2-854c-44ac-8467-eb8b42716bc1 (intptr,intptr)
这似乎是很多人都遇到的问题(1 https://forums.xamarin.com/discussion/93724/disposed-object-textview, 2 https://forums.xamarin.com/discussion/105958/app-is-getting-crash-randomly-on-android, 3 https://forums.xamarin.com/discussion/99819/cannot-access-a-disposed-object-object-name-xamarin-forms-platform-android-formstextview, 4 https://forums.xamarin.com/discussion/92102/system-objectdisposedexception)。它可能在 2.3.5 中得到修复,因此请尝试安装 2.3.5 XF 库之一,看看问题是否消失。
另外还有几个答案here https://stackoverflow.com/questions/43389037/xamarin-forms-disposed-textview这可能对你有用。
创建一个Entry
and/or Label
渲染器,覆盖OnAttachedToWindow
and Dispose
并捕获异常。
尝试设置ListView.CachingStrategy
to RecycleElement
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