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android - MotionLayout - 单击布局时行为不正确

转载 作者:行者123 更新时间:2023-11-30 05:03:45 24 4
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对于我使用 MotionLayout 的项目,除了一件小事外,一切都运行良好且顺利。当我打开应用程序并按下屏幕上的某个位置时,有时布局会跳转到未定义状态。

我定义的状态是:- 应用以“碎白”背景开始- 向右滑动时,会显示蓝色背景的框架布局- 向上滑动时,将显示红色背景的框架布局,隐藏所有其他 imageView

按下屏幕某处时应用程序所处的状态- 出现红色背景,所有 imageView 都可见。

我一直在寻找发生这种情况的原因,我猜这是一个错误(因为它仍处于 alpha 阶段),但想听听别人的意见。

代码将被附加以相当容易地重现它。

主要布局:

<androidx.constraintlayout.widget.ConstraintLayout
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">

<FrameLayout
android:id="@+id/fl_forUnity"
android:layout_width="match_parent"
android:visibility="gone"
android:layout_height="match_parent"
android:alpha="1"
tools:ignore="UnusedAttribute"/>

<androidx.constraintlayout.motion.widget.MotionLayout
app:layoutDescription="@xml/scene_motion"
android:id="@+id/topMotionLayout"
android:layout_width="match_parent"
android:layout_height="match_parent">

<View
android:id="@+id/backgroundView"
android:layout_width="match_parent"
android:layout_height="match_parent"/>

<View
android:id="@+id/ivBottomAnchor"
android:layout_width="match_parent"
android:layout_height="1dp"/>

<FrameLayout
android:id="@+id/flBottom"
app:layout_constraintTop_toBottomOf="@id/ivBottomAnchor"
app:layout_constraintBottom_toBottomOf="parent"
android:layout_width="match_parent"
android:layout_height="0dp"/>

<View
android:id="@+id/ivLeftAnchor"
android:layout_width="1dp"
android:layout_height="match_parent"/>

<FrameLayout
android:id="@+id/flLeft"
app:layout_constraintEnd_toStartOf="@id/ivLeftAnchor"
android:layout_width="300dp"
android:layout_height="match_parent"/>

<View
android:id="@+id/ivRightAnchor"
android:layout_width="1dp"
android:layout_height="match_parent"/>

<FrameLayout
android:id="@+id/flRight"
app:layout_constraintStart_toEndOf="@id/ivRightAnchor"
app:layout_constraintEnd_toEndOf="parent"
android:layout_width="0dp"
android:layout_height="match_parent"/>

<ImageView
android:layout_width="32dp"
android:src="@drawable/ic_message"
android:layout_height="32dp"
tools:tint="@color/colorGreen_200"
android:id="@+id/fabStartButton"/>

<ImageView
android:id="@+id/middleButton"
tools:tint="@color/colorGreen_200"
android:layout_width="64dp"
android:src="@drawable/ic_circle"
android:layout_height="64dp"/>

<ImageView
android:id="@+id/bottomButton"
tools:tint="@color/colorGreen_200"
android:layout_width="28dp"
android:src="@drawable/ic_message"
android:layout_height="28dp"/>

<ImageView
android:layout_width="32dp"
android:layout_height="32dp"
tools:tint="@color/colorGreen_200"
android:src="@drawable/ic_adb"
android:id="@+id/fabEndButton"/>

<ImageView
android:src="@drawable/ic_orb"
android:id="@+id/ivOrb"
tools:tint="@color/colorGreen_200"
android:layout_width="6dp"
android:layout_height="6dp"/>

</androidx.constraintlayout.motion.widget.MotionLayout>

运动布局:

<MotionScene
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:motion="http://schemas.android.com/apk/res-auto">

<Transition
android:id="@+id/SwipeUp"
motion:constraintSetStart="@+id/beginning"
motion:constraintSetEnd="@+id/endAtTop">
<OnSwipe
motion:dragDirection="dragUp"
motion:touchAnchorId="@id/ivBottomAnchor"
motion:touchAnchorSide="top"/>

<KeyFrameSet>
<KeyAttribute
android:alpha="0"
motion:framePosition="15"
motion:target="@id/bottomButton"/>

<KeyAttribute
android:alpha="0"
motion:framePosition="15"
motion:target="@id/fabStartButton"/>

<KeyAttribute
android:alpha="0"
motion:framePosition="15"
motion:target="@id/middleButton"/>

<KeyAttribute
android:alpha="0"
motion:framePosition="15"
motion:target="@id/fabEndButton"/>

<KeyAttribute
motion:target="@id/backgroundView">
<CustomAttribute
motion:attributeName="backgroundColor"
motion:customColorValue="#B71C1C"/>
</KeyAttribute>
</KeyFrameSet>
</Transition>

<Transition
android:id="@+id/SwipeLeft"
motion:constraintSetStart="@+id/beginning"
motion:constraintSetEnd="@+id/endRighty">

<OnSwipe
motion:dragDirection="dragLeft"
motion:touchAnchorId="@id/ivRightAnchor"
motion:touchAnchorSide="top"/>
</Transition>

<Transition
android:id="@+id/SwipeRight"
motion:constraintSetStart="@+id/beginning"
motion:constraintSetEnd="@+id/endLefty">

<OnSwipe
motion:dragDirection="dragRight"
motion:touchAnchorId="@id/ivLeftAnchor"
motion:touchAnchorSide="top"/>

<KeyFrameSet>
<KeyAttribute
motion:target="@id/backgroundView">
<CustomAttribute
motion:attributeName="backgroundColor"
motion:customColorValue="#0D47A1"/>
</KeyAttribute>
</KeyFrameSet>
</Transition>

<!--TODO: pressing on the bottombutton, go to bottom screen-->
<ConstraintSet android:id="@+id/beginning">
<Constraint
android:id="@+id/backgroundView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:alpha="0"/>

<Constraint
android:id="@+id/tbMain"
android:layout_width="match_parent"
android:layout_height="?actionBarSize"/>

<Constraint
android:id="@+id/ivBottomAnchor"
motion:layout_constraintBottom_toBottomOf="parent"
android:layout_height="1dp"
android:layout_width="match_parent"/>

<Constraint
android:id="@+id/flBottom"
motion:layout_constraintTop_toBottomOf="@id/ivBottomAnchor"
motion:layout_constraintBottom_toBottomOf="parent"
android:layout_width="match_parent"
android:layout_height="0dp"/>

<Constraint
android:id="@+id/ivLeftAnchor"
motion:layout_constraintStart_toStartOf="parent"
android:layout_height="match_parent"
android:layout_width="1dp"/>

<Constraint
android:id="@+id/flLeft"
motion:layout_constraintEnd_toStartOf="@id/ivLeftAnchor"
android:layout_width="300dp"
android:layout_marginEnd="10dp"
motion:layout_constraintBottom_toBottomOf="parent"
motion:layout_constraintTop_toBottomOf="@id/tbMain"
android:layout_height="0dp"/>

<Constraint
android:id="@+id/ivRightAnchor"
motion:layout_constraintEnd_toEndOf="parent"
android:layout_height="match_parent"
android:layout_width="1dp"/>

<Constraint
android:id="@+id/flRight"
android:layout_width="0dp"
motion:layout_constraintStart_toEndOf="@id/ivRightAnchor"
motion:layout_constraintEnd_toEndOf="parent"
motion:layout_constraintBottom_toBottomOf="parent"
motion:layout_constraintTop_toBottomOf="@id/tbMain"
android:layout_height="0dp"/>

<Constraint
android:id="@+id/fabStartButton"
android:layout_width="28dp"
android:layout_height="28dp"
android:layout_marginBottom="32dp"
android:layout_marginStart="32dp"
motion:layout_constraintBottom_toBottomOf="parent"
motion:layout_constraintStart_toStartOf="parent"/>

<Constraint
android:id="@+id/middleButton"
android:layout_width="78dp"
android:layout_height="78dp"
motion:layout_constraintBottom_toBottomOf="parent"
android:layout_marginBottom="72dp"
motion:layout_constraintEnd_toEndOf="parent"
motion:layout_constraintStart_toStartOf="parent"/>

<Constraint
android:id="@+id/bottomButton"
android:layout_marginBottom="32dp"
android:layout_width="28dp"
android:layout_height="28dp"
motion:layout_constraintBottom_toBottomOf="parent"
motion:layout_constraintEnd_toEndOf="parent"
motion:layout_constraintStart_toStartOf="parent"/>

<Constraint
android:id="@+id/fabEndButton"
android:layout_width="28dp"
android:layout_height="28dp"
android:layout_marginBottom="32dp"
android:layout_marginEnd="32dp"
motion:layout_constraintBottom_toBottomOf="parent"
motion:layout_constraintEnd_toEndOf="parent"/>

<Constraint
android:id="@+id/ivOrb"
android:layout_width="6dp"
android:layout_height="6dp"
android:visibility="gone"
android:alpha="0"
android:layout_marginTop="8dp"
motion:layout_constraintTop_toBottomOf="@id/fabStartButton"
motion:layout_constraintStart_toStartOf="@id/middleButton"
motion:layout_constraintEnd_toEndOf="@id/middleButton"/>
</ConstraintSet>

<ConstraintSet android:id="@+id/endAtTop">
<Constraint
android:id="@+id/backgroundView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:alpha="1"/>

<Constraint
android:id="@+id/tbMain"
android:layout_width="match_parent"
android:layout_height="?actionBarSize"/>

<Constraint
android:id="@+id/ivBottomAnchor"
android:layout_height="1dp"
motion:layout_constraintTop_toBottomOf="@id/tbMain"
android:layout_width="match_parent"/>

<Constraint
android:id="@+id/flBottom"
motion:layout_constraintTop_toBottomOf="@id/ivBottomAnchor"
motion:layout_constraintBottom_toBottomOf="parent"
android:layout_width="match_parent"
android:layout_height="0dp"/>

<Constraint
android:id="@+id/ivLeftAnchor"
motion:layout_constraintStart_toStartOf="parent"
android:layout_height="match_parent"
android:layout_width="1dp"/>

<Constraint
android:id="@+id/flLeft"
motion:layout_constraintEnd_toStartOf="@id/ivLeftAnchor"
android:layout_width="300dp"
android:layout_marginEnd="10dp"
motion:layout_constraintBottom_toBottomOf="parent"
motion:layout_constraintTop_toBottomOf="@id/tbMain"
android:layout_height="0dp"/>

<Constraint
android:id="@+id/ivRightAnchor"
motion:layout_constraintEnd_toEndOf="parent"
android:layout_height="match_parent"
android:layout_width="1dp"/>

<Constraint
android:id="@+id/flRight"
android:layout_width="0dp"
motion:layout_constraintStart_toEndOf="@id/ivRightAnchor"
motion:layout_constraintEnd_toEndOf="parent"
motion:layout_constraintBottom_toBottomOf="parent"
motion:layout_constraintTop_toBottomOf="@id/tbMain"
android:layout_height="0dp"/>

<Constraint
android:id="@+id/fabStartButton"
android:layout_width="26dp"
android:layout_height="26dp"
android:alpha="0"
android:layout_marginBottom="32dp"
android:layout_marginStart="80dp"
android:translationY="-100dp"
motion:layout_constraintBottom_toBottomOf="parent"
motion:layout_constraintStart_toStartOf="parent"/>

<Constraint
android:id="@+id/middleButton"
android:layout_width="52dp"
android:translationY="-100dp"
android:alpha="0"
android:layout_height="52dp"
motion:layout_constraintBottom_toBottomOf="parent"
android:layout_marginBottom="38dp"
motion:layout_constraintEnd_toEndOf="parent"
motion:layout_constraintStart_toStartOf="parent"/>

<Constraint
android:id="@+id/bottomButton"
android:translationY="-100dp"
android:layout_width="26dp"
android:layout_height="26dp"
android:alpha="0"
motion:layout_constraintTop_toBottomOf="@id/middleButton"
motion:layout_constraintEnd_toEndOf="parent"
motion:layout_constraintStart_toStartOf="parent"/>

<Constraint
android:id="@+id/fabEndButton"
android:layout_width="26dp"
android:translationY="-100dp"
android:alpha="0"
android:layout_height="26dp"
android:layout_marginBottom="32dp"
android:layout_marginEnd="80dp"
motion:layout_constraintBottom_toBottomOf="parent"
motion:layout_constraintEnd_toEndOf="parent"/>

<Constraint
android:id="@+id/ivOrb"
android:visibility="gone"
android:translationY="-100dp"
android:layout_width="6dp"
android:alpha="0"
android:layout_height="6dp"
android:layout_marginTop="8dp"
motion:layout_constraintTop_toBottomOf="@id/fabStartButton"
motion:layout_constraintStart_toStartOf="@id/middleButton"
motion:layout_constraintEnd_toEndOf="@id/middleButton"/>
</ConstraintSet>

<ConstraintSet android:id="@+id/endRighty">
<Constraint
android:id="@+id/backgroundView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:alpha="0"/>

<Constraint
android:id="@+id/tbMain"
android:layout_width="match_parent"
android:layout_height="?actionBarSize"/>

<Constraint
android:id="@+id/ivBottomAnchor"
android:layout_height="1dp"
motion:layout_constraintBottom_toBottomOf="parent"
android:layout_width="match_parent"/>

<Constraint
android:id="@+id/flBottom"
motion:layout_constraintTop_toBottomOf="@id/ivBottomAnchor"
motion:layout_constraintBottom_toBottomOf="parent"
android:layout_width="match_parent"
android:layout_height="0dp"/>

<Constraint
android:id="@+id/ivLeftAnchor"
motion:layout_constraintStart_toStartOf="parent"
android:layout_height="match_parent"
android:layout_width="1dp"/>

<Constraint
android:id="@+id/flLeft"
motion:layout_constraintEnd_toStartOf="@id/ivLeftAnchor"
android:layout_width="300dp"
android:layout_marginEnd="10dp"
motion:layout_constraintBottom_toBottomOf="parent"
motion:layout_constraintTop_toBottomOf="@id/tbMain"
android:layout_height="0dp"/>

<Constraint
android:id="@+id/ivRightAnchor"
motion:layout_constraintStart_toStartOf="parent"
android:layout_height="match_parent"
android:layout_width="1dp"/>

<Constraint
android:id="@+id/flRight"
motion:layout_constraintStart_toEndOf="@id/ivRightAnchor"
motion:layout_constraintEnd_toEndOf="parent"
motion:layout_constraintBottom_toBottomOf="parent"
motion:layout_constraintTop_toBottomOf="@id/tbMain"
android:layout_width="match_parent"
android:layout_height="0dp"/>

<Constraint
android:id="@+id/fabStartButton"
android:layout_width="26dp"
android:layout_height="26dp"
android:layout_marginBottom="32dp"
android:layout_marginStart="80dp"
motion:layout_constraintBottom_toBottomOf="parent"
motion:layout_constraintStart_toStartOf="parent"/>

<Constraint
android:id="@+id/middleButton"
android:layout_width="52dp"
android:layout_height="52dp"
motion:layout_constraintBottom_toBottomOf="parent"
android:layout_marginBottom="38dp"
motion:layout_constraintEnd_toEndOf="parent"
motion:layout_constraintStart_toStartOf="parent"/>

<Constraint
android:id="@+id/bottomButton"
android:layout_width="28dp"
android:layout_height="28dp"
android:alpha="0"
motion:layout_constraintTop_toBottomOf="@id/middleButton"
motion:layout_constraintEnd_toEndOf="parent"
motion:layout_constraintStart_toStartOf="parent"/>

<Constraint
android:id="@+id/fabEndButton"
android:layout_width="26dp"
android:layout_height="26dp"
android:layout_marginBottom="32dp"
android:layout_marginEnd="80dp"
motion:layout_constraintBottom_toBottomOf="parent"
motion:layout_constraintEnd_toEndOf="parent"/>

<Constraint
android:id="@+id/ivOrb"
android:layout_width="6dp"
android:layout_height="6dp"
android:layout_marginTop="8dp"
motion:layout_constraintTop_toBottomOf="@id/fabEndButton"
motion:layout_constraintStart_toStartOf="@id/fabEndButton"
motion:layout_constraintEnd_toEndOf="@id/fabEndButton"/>
</ConstraintSet>

<ConstraintSet android:id="@+id/endLefty">
<Constraint
android:id="@+id/backgroundView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:alpha="1"/>

<Constraint
android:id="@+id/tbMain"
android:layout_width="match_parent"
android:layout_height="?actionBarSize"/>

<Constraint
android:id="@+id/ivBottomAnchor"
android:layout_height="1dp"
motion:layout_constraintBottom_toBottomOf="parent"
android:layout_width="match_parent"/>

<Constraint
android:id="@+id/flBottom"
motion:layout_constraintTop_toBottomOf="@id/ivBottomAnchor"
motion:layout_constraintBottom_toBottomOf="parent"
android:layout_width="match_parent"
android:layout_height="0dp"/>

<Constraint
android:id="@+id/ivLeftAnchor"
motion:layout_constraintEnd_toEndOf="parent"
android:layout_height="match_parent"
android:layout_width="1dp"/>

<Constraint
android:id="@+id/flLeft"
motion:layout_constraintEnd_toStartOf="@id/ivLeftAnchor"
motion:layout_constraintStart_toStartOf="parent"
motion:layout_constraintBottom_toBottomOf="parent"
motion:layout_constraintTop_toBottomOf="@id/tbMain"
android:layout_width="match_parent"
android:layout_height="0dp"/>

<Constraint
android:id="@+id/ivRightAnchor"
motion:layout_constraintEnd_toEndOf="parent"
android:layout_height="match_parent"
android:layout_width="1dp"/>

<Constraint
android:id="@+id/flRight"
android:layout_width="0dp"
motion:layout_constraintStart_toEndOf="@id/ivRightAnchor"
motion:layout_constraintEnd_toEndOf="parent"
motion:layout_constraintBottom_toBottomOf="parent"
motion:layout_constraintTop_toBottomOf="@id/tbMain"
android:layout_height="0dp"/>

<Constraint
android:id="@+id/fabStartButton"
android:layout_width="26dp"
android:layout_height="26dp"
android:alpha="0"
android:layout_marginBottom="32dp"
android:layout_marginStart="80dp"
motion:layout_constraintBottom_toBottomOf="parent"
motion:layout_constraintStart_toStartOf="parent"/>

<Constraint
android:id="@+id/middleButton"
android:layout_width="52dp"
android:layout_height="52dp"
android:alpha="0"
motion:layout_constraintBottom_toBottomOf="parent"
android:layout_marginBottom="38dp"
motion:layout_constraintEnd_toEndOf="parent"
motion:layout_constraintStart_toStartOf="parent"/>

<Constraint
android:id="@+id/bottomButton"
android:layout_width="28dp"
android:layout_height="28dp"
android:alpha="0"
motion:layout_constraintTop_toBottomOf="@id/middleButton"
motion:layout_constraintEnd_toEndOf="parent"
motion:layout_constraintStart_toStartOf="parent"/>

<Constraint
android:id="@+id/fabEndButton"
android:layout_width="26dp"
android:layout_height="26dp"
android:alpha="0"
android:layout_marginBottom="32dp"
android:layout_marginEnd="80dp"
motion:layout_constraintBottom_toBottomOf="parent"
motion:layout_constraintEnd_toEndOf="parent"/>

<Constraint
android:id="@+id/ivOrb"
android:alpha="0"
android:layout_width="6dp"
android:layout_height="6dp"
android:layout_marginTop="8dp"
motion:layout_constraintTop_toBottomOf="@id/fabStartButton"
motion:layout_constraintStart_toStartOf="@id/fabStartButton"
motion:layout_constraintEnd_toEndOf="@id/fabStartButton"/>
</ConstraintSet>

最佳答案

解决方案是等待新版本的 motionLayout。在那个 RC(我认为是 RC3)中有一个关于可见性状态等的错误。从下一个 RC (RC4) 开始,这个问题已经解决,并且按预期工作。

关于android - MotionLayout - 单击布局时行为不正确,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/54943837/

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