试图使用MotionLayout
与RecyclerView
,
向上滚动时,应用程序崩溃并显示错误:
android.content.res.Resources $ NotFoundException:无法找到资源ID#0xffffffff
片段布局代码是
<android.support.constraint.motion.MotionLayout
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"
app:layoutDescription="@xml/collapsing_config_order_details"
android:layout_width="match_parent"
android:layout_height="match_parent">
...
<android.support.v7.widget.CardView
android:id="@+id/cardView"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
app:layout_constraintEnd_toEndOf="@+id/tv_delivery_type"
app:layout_constraintStart_toStartOf="@+id/imageView15"
app:layout_constraintTop_toBottomOf="@+id/view4">
...
</android.support.v7.widget.CardView>
<android.support.v7.widget.RecyclerView
android:id="@+id/rv_list"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="8dp"
android:layout_marginTop="8dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="@+id/cardView"
app:layout_constraintStart_toStartOf="@+id/cardView"
app:layout_constraintTop_toBottomOf="@+id/cardView" />
</android.support.constraint.motion.MotionLayout>
和layoutDescription代码是:
<MotionScene xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<Transition
app:constraintSetEnd="@id/collapsed"
app:constraintSetStart="@id/expanded">
<OnSwipe
app:dragDirection="dragUp"
app:touchAnchorSide="top"
app:moveWhenScrollAtTop="@+id/rv_list" />
</Transition>
<ConstraintSet android:id="@+id/expanded"
android:id="@+id/cardView"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
app:layout_constraintEnd_toEndOf="@+id/tv_delivery_type"
app:layout_constraintStart_toStartOf="@+id/imageView15"
app:layout_constraintTop_toBottomOf="@+id/view4" />
</ConstraintSet>
<ConstraintSet android:id="@+id/collapsed">
<Constraint
android:id="@+id/cardView"
android:layout_width="0dp"
android:layout_height="1dp"
android:layout_marginTop="8dp"
app:layout_constraintEnd_toEndOf="@+id/tv_delivery_type"
app:layout_constraintStart_toStartOf="@+id/imageView15"
app:layout_constraintTop_toBottomOf="@+id/view4" />
</ConstraintSet>
</MotionScene>
更改
<ConstraintSet android:id="@+id/expanded"
android:id="@+id/cardView"
至
<ConstraintSet android:id="@+id/expanded" >
<Constraint android:id="@+id/cardView"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
app:layout_constraintEnd_toEndOf="@+id/tv_delivery_type"
app:layout_constraintStart_toStartOf="@+id/imageView15"
app:layout_constraintTop_toBottomOf="@+id/view4" />
</ConstraintSet>
每个ConstraintSet
本身应该有Constraint
你需要指定尽可能多的Constraint
你想要改变场景,就像你想要将A和B一起移动一个互动,你需要在一个ConstraintSet
中指定它们
另外,我不确定你想要实现什么,但我认为你需要编写如下代码
<OnSwipe
app:dragDirection="dragUp"
app:touchAnchorId="@id/rv_list"
app:touchAnchorSide="top" />
这意味着你的目标是rv_list
触发行动。
app:moveWhenScrollAtTop="@+id/rv_list"
应用程序的Vale:moveWhenScrollAtTop应该是布尔值。