Android：移动到后台时应用程序崩溃

Android : Application is crashing when moving to background

我面临的问题是，当我在应用程序处于前台时按下Home按钮，那么应用程序将因引发AppCompat不可序列化异常而崩溃。这是异常的stacktrace。请提出解决方案。我没有使用任何不可序列化的自定义数据类型。这是导致问题的Android视图

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FATAL EXCEPTION: main
java.lang.RuntimeException: Parcelable encountered IOException writing serializable object (name = com.test.XYZFragment)
at android.os.Parcel.writeSerializable(Parcel.java:1285)
at android.os.Parcel.writeValue(Parcel.java:1233)
at android.os.Parcel.writeMapInternal(Parcel.java:591)
at android.os.Bundle.writeToParcel(Bundle.java:1646)
at android.os.Parcel.writeBundle(Parcel.java:605)
at android.support.v4.app.FragmentState.writeToParcel(Fragment.java:137)
at android.os.Parcel.writeTypedArray(Parcel.java:1102)
at android.support.v4.app.FragmentManagerState.writeToParcel(FragmentManager.java:385)
at android.os.Parcel.writeParcelable(Parcel.java:1254)
at android.os.Parcel.writeValue(Parcel.java:1173)
at android.os.Parcel.writeMapInternal(Parcel.java:591)
at android.os.Bundle.writeToParcel(Bundle.java:1646)
at android.os.Parcel.writeBundle(Parcel.java:605)
at android.app.ActivityManagerProxy.activityStopped(ActivityManagerNative.java:2613)
at android.app.ActivityThread$StopInfo.run(ActivityThread.java:3232)
at android.os.Handler.handleCallback(Handler.java:730)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:176)
at android.app.ActivityThread.main(ActivityThread.java:5419)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1046)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:862)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.io.NotSerializableException: android.support.v7.widget.AppCompatAutoCompleteTextView
at java.io.ObjectOutputStream.writeNewObject(ObjectOutputStream.java:1364)
at java.io.ObjectOutputStream.writeObjectInternal(ObjectOutputStream.java:1671)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:1517)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:1481)
at java.io.ObjectOutputStream.writeFieldValues(ObjectOutputStream.java:979)
at java.io.ObjectOutputStream.defaultWriteObject(ObjectOutputStream.java:368)
at java.io.ObjectOutputStream.writeHierarchy(ObjectOutputStream.java:1074)
at java.io.ObjectOutputStream.writeNewObject(ObjectOutputStream.java:1404)
at java.io.ObjectOutputStream.writeObjectInternal(ObjectOutputStream.java:1671)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:1517)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:1481)
at android.os.Parcel.writeSerializable(Parcel.java:1280)
at android.os.Parcel.writeValue(Parcel.java:1233) 
at android.os.Parcel.writeMapInternal(Parcel.java:591) 
at android.os.Bundle.writeToParcel(Bundle.java:1646) 
at android.os.Parcel.writeBundle(Parcel.java:605) 
at android.support.v4.app.FragmentState.writeToParcel(Fragment.java:137) 
at android.os.Parcel.writeTypedArray(Parcel.java:1102) 
at android.support.v4.app.FragmentManagerState.writeToParcel(FragmentManager.java:385) 
at android.os.Parcel.writeParcelable(Parcel.java:1254) 
at android.os.Parcel.writeValue(Parcel.java:1173) 
at android.os.Parcel.writeMapInternal(Parcel.java:591) 
at android.os.Bundle.writeToParcel(Bundle.java:1646) 
at android.os.Parcel.writeBundle(Parcel.java:605) 
at android.app.ActivityManagerProxy.activityStopped(ActivityManagerNative.java:2613) 
at android.app.ActivityThread$StopInfo.run(ActivityThread.java:3232) 
at android.os.Handler.handleCallback(Handler.java:730) 
at android.os.Handler.dispatchMessage(Handler.java:92) 
at android.os.Looper.loop(Looper.java:176) 
at android.app.ActivityThread.main(ActivityThread.java:5419) 
at java.lang.reflect.Method.invokeNative(Native Method) 
at java.lang.reflect.Method.invoke(Method.java:525) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1046) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:862) 
at dalvik.system.NativeStart.main(Native Method) 