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我试图收听底部表中的滑动和状态更改,但出现错误:视图不是 CoordinatorLayout 的子视图。stackoverflow 上已经有很少的资源,但它们似乎没有解决我的问题,所以用我的代码发布这个新的。

我添加了一个回调来监控底部表中的滑动和状态变化。

private lateinit var bottomSheetBehavior: BottomSheetBehavior<View>

override fun onCreateView(
        inflater: LayoutInflater,
        container: ViewGroup?,
        savedInstanceState: Bundle?
    ): View? {
        val layoutId = R.layout.bottomsheet_series_summary

        bottomSheetBehavior = BottomSheetBehavior.from(inflater.inflate(layoutId, container, false))
        bottomSheetBehavior.addBottomSheetCallback(object : BottomSheetBehavior.BottomSheetCallback() {
            override fun onSlide(bottomSheet: View, slideOffset: Float) {

            }

            override fun onStateChanged(bottomSheet: View, newState: Int) {

            }
        })
        return inflater.inflate(layoutId, container, false)
    }

xml代码是:

<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/f_s_s"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/gradient_profile_header"
    tools:context=".ui.main.MainActivity">
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="2dp"
        android:orientation="vertical"
        android:background="@drawable/gradient_profile_header">
    <com.google.android.material.appbar.AppBarLayout
        android:id="@+id/app_bar"
        android:layout_width="match_parent"
        android:layout_height="225dp"
        android:theme="@style/AppTheme.AppBarOverlay"
        android:background="@drawable/gradient_profile_header">

        <com.google.android.material.appbar.CollapsingToolbarLayout
            android:id="@+id/toolbar_layout"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            app:collapsedTitleTextAppearance="@style/PC.TextView.SeriesTitle"
            app:contentScrim="?attr/colorPrimary"
            app:expandedTitleMarginBottom="180dp"
            app:expandedTitleMarginStart="@dimen/activity_horizontal_margin"
            app:expandedTitleTextAppearance="@style/PC.TextView.SeriesTitle"
            app:layout_scrollFlags="scroll|exitUntilCollapsed|enterAlwaysCollapsed"
            app:toolbarId="@id/toolbar">

........
........
I have combination of linearlayout , constrain layout and frame layout.
........

</androidx.coordinatorlayout.widget.CoordinatorLayout>

我得到的错误是:

java.lang.IllegalArgumentException: The view is not a child of CoordinatorLayout
                         E      at com.google.android.material.bottomsheet.BottomSheetBehavior.from(BottomSheetBehavior.java:1599)
                         E      at com.pratilipi.comics.ui.misc.bottomSheet.SeriesSummaryBottomSheet.onCreateView(SeriesSummaryBottomSheet.kt:52)
                         E      at androidx.fragment.app.Fragment.performCreateView(Fragment.java:2698)
                         E      at androidx.fragment.app.FragmentStateManager.createView(FragmentStateManager.java:320)
                         E      at android.app.ActivityThread.main(ActivityThread.java:7592)
                         E      at java.lang.reflect.Method.invoke(Native Method)
                         E      at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:539)
                         E      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:950)
      OOMEventManagerFK  D  checkEventAndDumpForJE: 0
    java.lang.Exception: Thread.setDefaultUncaughtExceptionHandler
                         E      
    .......
    .......
    .......
    ```
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