CODEWITHSUNDEEP
androidandroid-support-libraryfloating-action-buttonandroid-support-design
maohieng
maohieng

Reputation: 1736

Upgrade Android Support library to 24.2.0 makes my app crash

My previous support library version is 24.1.1. The app works fine. But after upgrade to version 24.2.0, the app always force stop when start. My app's MainActivity contains a BottomSheetBehavior view and FloatingActionButton. Here's the error message:

java.lang.ClassCastException: android.view.ViewGroup$LayoutParams cannot be cast to android.support.design.widget.CoordinatorLayout$LayoutParams
at android.support.design.widget.FloatingActionButton$Behavior.isBottomSheet(FloatingActionButton.java:597)
at android.support.design.widget.FloatingActionButton$Behavior.onDependentViewChanged(FloatingActionButton.java:589)
at android.support.design.widget.FloatingActionButton$Behavior.onDependentViewChanged(FloatingActionButton.java:528)
at android.support.design.widget.CoordinatorLayout.offsetChildToAnchor(CoordinatorLayout.java:1564)
at android.support.design.widget.CoordinatorLayout.onChildViewsChanged(CoordinatorLayout.java:1233)
at android.support.design.widget.CoordinatorLayout$OnPreDrawListener.onPreDraw(CoordinatorLayout.java:1812)
...
...

Update: Here is my MainActivity's layout

<android.support.design.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:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:context=".ui.MainActivity">

    <include
        android:id="@id/appBar"
        layout="@layout/app_bar_layout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:viewPagerTab="@{(currentFragment instanceof SongBookTabFragment)? viewPagerTab : null}" />

    <android.support.v4.widget.SwipeRefreshLayout
        android:id="@+id/swipeRefresh"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layout_behavior="@string/appbar_scrolling_view_behavior">

        <FrameLayout
            android:id="@+id/container"
            android:layout_width="match_parent"
            android:layout_height="match_parent" />
    </android.support.v4.widget.SwipeRefreshLayout>

    <android.support.design.widget.FloatingActionButton
        android:id="@+id/fab"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom|end"
        android:layout_margin="@dimen/fab_margin"
        android:onClick="clickFAB"
        app:layout_anchor="@id/container"
        app:layout_anchorGravity="bottom|right|end"
        app:layout_behavior="com.boombile.originalsong.ui.widget.ScrollAwareFABBehavior"
        app:srcCompat="@drawable/ic_menu_send" />

    <include
        android:id="@+id/bottomSheetPlayer"
        layout="@layout/view_bottom_sheet_player"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:layout_behavior="@string/bottom_sheet_behavior" />

</android.support.design.widget.CoordinatorLayout>

Upvotes: 3

Views: 612

Answers (2)

Analizer
Analizer

Reputation: 1644

This is a known bug, please see https://code.google.com/p/android/issues/detail?id=220250

You should upgrade to the 24.2.1 version, this issue got resolved there.

Upvotes: 0

Gabriele Mariotti
Gabriele Mariotti

Reputation: 364441

I don't know if it is a bug, but currently with the 24.2.0 the FAB can not longer be anchored to indirect children of CoordinatorLayout.

The layout_anchor only works with direct children of CoordinatorLayout. You'll need to change your layout_anchor to use a different view.

You can check the source code of the FloatingActionButton:

        @Override
        public boolean onDependentViewChanged(CoordinatorLayout parent, FloatingActionButton child,
                View dependency) {
            if (dependency instanceof AppBarLayout) {
                // If we're depending on an AppBarLayout we will show/hide it automatically
                // if the FAB is anchored to the AppBarLayout
                updateFabVisibilityForAppBarLayout(parent, (AppBarLayout) dependency, child);
            } else if (isBottomSheet(dependency)) {
                updateFabVisibilityForBottomSheet(dependency, child);
            }
            return false;
        }

        private static boolean isBottomSheet(View view) {
            CoordinatorLayout.LayoutParams lp =
                    (CoordinatorLayout.LayoutParams) view.getLayoutParams();
            return lp != null && lp.getBehavior() instanceof BottomSheetBehavior;
        }

More details here.

Upvotes: 3

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