更新支持库后安卓底表崩溃

Question

我们有一个底部表，在将支持库版本更新为'26.0.1'后，当您打开应用程序并在显示底部工作表之前，应用程序崩溃。

<android.support.design.widget.CoordinatorLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">
        <FrameLayout
            android:id="@+id/vf_ovelay_container"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:visibility="gone" />
        <FrameLayout
            android:id="@+id/bottom_sheet_container"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:paddingTop="32dp"
            android:clickable="true"
            android:visibility="gone"
            tools:visibility="visible"
            app:layout_behavior="android.support.design.widget.BottomSheetBehavior"
            app:behavior_skipCollapsed="true"/>
</android.support.design.widget.CoordinatorLayout>

和

private BottomSheetBehavior mBottomSheetBehavior;
private ViewGroup bottomSheet;

这是我如何展示的

mBottomSheetBehavior = BottomSheetBehavior.from(bottomSheet);
mBottomSheetBehavior.setHideable(true);//Important to add
        mBottomSheetBehavior.setState(BottomSheetBehavior.STATE_HIDDEN);
bottomSheet.removeAllViews();
bottomSheet.setVisibility(VISIBLE);
bottomSheet.addView(getCustomView());

当我点击屏幕时，应用程序崩溃了！

日志是

java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.Object java.lang.ref.WeakReference.get()' on a null object reference
at android.support.design.widget.BottomSheetBehavior.onInterceptTouchEvent(BottomSheetBehavior.java:299)
at android.support.design.widget.CoordinatorLayout.performIntercept(CoordinatorLayout.java:460)
at android.support.design.widget.CoordinatorLayout.onInterceptTouchEvent(CoordinatorLayout.java:499)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2310)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2709)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2371)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2709)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2371)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2709)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2371)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2709)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2371)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2709)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2371)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2709)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:2371)
at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:2568)
at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1776)
at android.app.Activity.dispatchTouchEvent(Activity.java:2866)

Answer 1

这

只能通过创建自定义BottomSheetBehavior类并更新onInterceptTouchEvent方法来解决。

更多信息：https://developer.android.com/reference/android/support/design/widget/BottomSheetBehavior

https://github.com/google/ground-android/blob/master/gnd/src/main/java/com/google/android/gnd/ui/common/BottomSheetBehavior.java

不要忘记将其迁移到AndroidX：https://developer.android.com/jetpack/androidx/migrate