Question

有很多类似的问题，但仍然找不到答案。

我有一个具有动态高度的自定义视图，我想保存它。看起来很简单，并且可以在所有设备上进行测试，但是可以从Crashlytics ...

中获取错误

这是已保存实例的代码：

    internal class SavedState : BaseSavedState {
        var height = 0

        constructor(source: Parcel) : super(source) {
            height = source.readInt()
        }

        constructor(superState: Parcelable) : super(superState)

        override fun writeToParcel(out: Parcel, flags: Int) {
            super.writeToParcel(out, flags)
            out.writeInt(height)
        }

        companion object {
            @JvmField
            val CREATOR = object : Parcelable.Creator<SavedState> {
                override fun createFromParcel(source: Parcel): SavedState {
                    return SavedState(source)
                }

                override fun newArray(size: Int): Array<SavedState?> {
                    return arrayOfNulls(size)
                }
            }
        }
    }

保存和恢复：

  override fun onSaveInstanceState(): Parcelable {
        val savedState = SavedState(super.onSaveInstanceState()!!)
        savedState.height = height
        return savedState
    }

    override fun onRestoreInstanceState(state: Parcelable?) {
        if (state is SavedState) {
            super.onRestoreInstanceState(state.superState)
            layoutParams.height = state.height
        } else {
            super.onRestoreInstanceState(state)
        }
    }

错误：

Caused by android.os.BadParcelableException
ClassNotFoundException when unmarshalling: androidx.viewpager.widget.ViewPager$SavedState
android.os.Parcel.readParcelableCreator (Parcel.java:2295)
android.view.View$BaseSavedState.<init> (View.java:20570)
com.app.utils.view.DynamicHeightViewPager$SavedState.<init> (DynamicHeightViewPager.kt:54)
com.app.utils.view.DynamicHeightViewPager$SavedState$Companion$CREATOR$1.createFromParcel (DynamicHeightViewPager.kt:69)
com.app.utils.view.DynamicHeightViewPager$SavedState$Companion$CREATOR$1.createFromParcel (DynamicHeightViewPager.kt:67)
android.os.Parcel.readParcelable (Parcel.java:2252)

在其他视图上也得到类似的错误。

有什么想法吗？

保存和还原自定义视图的实例

0 个答案: