动画时 TextInputLayout 崩溃测量和焦点 (MotionLayout)
TextInputLayout crash measure and focus when animating (MotionLayout)
有MotionLayout，里面有很多ConstraintLayout，有的ConstraintLayout有TextInputLayout。
1-使用 android studio XML 设计预览时：
在启动器“ideal/landing”状态下没有错误，当我开始为 ConstraintLayout（开始显示视图）制作动画时，里面有 TextInputLayout，出现视图崩溃和渲染问题，并出现 onMeasure 错误（详细信息：java.lang.NullPointerException )
2-当我 运行 应用程序（真实设备）时：
动画工作正常，没有错误，但问题是：TextInputLayout 不（完全）关注 tap/click 并且键盘正常显示，当我尝试像垃圾邮件一样强制关注时 taps/clicks 没有任何反应，但是当我使用键盘写一些文本，文本出现在 TextInputLayout 中但根本没有焦点，之后如果我再次 tap/click（在写了一些文本之后），TextInputLayout 获得焦点。
片段XMl文件：
<androidx.constraintlayout.motion.widget.MotionLayout
android:id="@+id/secondProfileLayout"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_marginTop="@dimen/my25dp"
app:layoutDescription="@xml/fragment_dashboard_profile_scene"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHorizontal_chainStyle="spread"
app:layout_constraintTop_toBottomOf="@id/user_access">
<androidx.constraintlayout.widget.ConstraintLayout
>
this ConstraintLayout 1
</androidx.constraintlayout.widget.ConstraintLayout>
<androidx.constraintlayout.widget.ConstraintLayout
>
this ConstraintLayout 2
</androidx.constraintlayout.widget.ConstraintLayout>
<androidx.constraintlayout.widget.ConstraintLayout
>
<com.google.android.material.textfield.TextInputLayout
android:id="@+id/id"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="@dimen/my35dp"
android:layout_marginTop="@dimen/my10dp"
android:layout_marginEnd="@dimen/my35dp"
android:hint="@string/worker_code"
app:errorContentDescription="@string/wrong_code"
app:errorEnabled="false"
app:hintAnimationEnabled="true"
app:hintEnabled="true"
layout_constraint...
>
<com.google.android.material.textfield.TextInputEditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:imeOptions="actionDone"
android:importantForAutofill="auto"
android:inputType="text" />
</com.google.android.material.textfield.TextInputLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.constraintlayout.motion.widget.MotionLayout>
Java代码：
没意思，只有这两行：
1- bind.motionLayout.transitionToEnd();
2- bind.textLayoutInput.getEditText().getText().toString();
注意：当我从 TextLayoutInput 中删除 TextInputEditText 时（留空），没有出现错误（没有渲染问题），可能是与 TextInputEditText 相关的问题。
注意 2：如果我从 TextLayoutInput 中删除此属性：
app:errorContentDescription="@string/wrong_code"
app:errorEnabled="false"
app:hintAnimationEnabled="true"
app:hintEnabled="true"
此问题出现，此外，测量错误呈现问题：
java.lang.NullPointerException
at android.content.res.Resources_Delegate.getResourceInfo(Resources_Delegate.java:144)
at android.content.res.Resources_Delegate.getResourceName(Resources_Delegate.java:743)
at android.content.res.Resources.getResourceName(Resources.java:2064)
at androidx.constraintlayout.widget.ConstraintLayout.setChildrenConstraints(ConstraintLayout.java:1170)
at androidx.constraintlayout.widget.ConstraintLayout.updateHierarchy(ConstraintLayout.java:1143)
at androidx.constraintlayout.widget.ConstraintLayout.onMeasure_Original(ConstraintLayout.java:1703)
at androidx.constraintlayout.widget.ConstraintLayout.onMeasure(ConstraintLayout.java)
at android.view.View.measure_Original(View.java:24552)
at android.view.View_Delegate.measure(View_Delegate.java:80)
at android.view.View.measure(View.java:24516)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6828)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:194)
at android.view.View.measure_Original(View.java:24552)
at android.view.View_Delegate.measure(View_Delegate.java:80)
at android.view.View.measure(View.java:24516)
at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:735)
at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:481)
at android.view.View.measure_Original(View.java:24552)
at android.view.View_Delegate.measure(View_Delegate.java:80)
at android.view.View.measure(View.java:24516)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6828)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:194)
at android.view.View.measure_Original(View.java:24552)
at android.view.View_Delegate.measure(View_Delegate.java:80)
at android.view.View.measure(View.java:24516)
at com.android.layoutlib.bridge.impl.RenderSessionImpl.measureView(RenderSessionImpl.java:638)
at com.android.layoutlib.bridge.impl.RenderSessionImpl.doLayout(RenderSessionImpl.java:406)
at com.android.layoutlib.bridge.impl.RenderSessionImpl.renderAndBuildResult(RenderSessionImpl.java:546)
at com.android.layoutlib.bridge.impl.RenderSessionImpl.render(RenderSessionImpl.java:449)
at com.android.layoutlib.bridge.BridgeRenderSession.render(BridgeRenderSession.java:123)
at com.android.ide.common.rendering.api.RenderSession.render(RenderSession.java:143)
at com.android.ide.common.rendering.api.RenderSession.render(RenderSession.java:125)
at com.android.tools.idea.rendering.RenderTask.lambda$null(RenderTask.java:966)
at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1604)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
图片：
after animation end and I tap/click the TextInputEditText one time
after one tap, I try to force write with no focus but the text is written
after some text is written, I tap again and I get focus
if I delete the text, focus lose and we back to the start of the problem
更新
经过一些测试和尝试找出解决方案，找到了渲染错误“onmeasure()”的解决方案，但它并不有效（如果我使用旧代码，则存在崩溃窃取），但 TextInputLayout 没有收到完全专注。
注意：TextinputLayout 是 ID 为 'second_layout'
的 ConstraintLayout 的子项
动画很简单，从左到右过渡，这是我的旧 MotionLayout 布局描述如下：
<Transition
android:id="@+id/transition_a_to_b"
motion:constraintSetEnd="@id/b_end"
motion:constraintSetStart="@id/b_start"
motion:duration="200" />
<ConstraintSet android:id="@+id/b_start">
<Constraint
android:id="@id/first_layout"
android:layout_width="0dp"
android:layout_height="0dp"
motion:layout_constraintHeight_default="percent"
motion:layout_constraintHeight_percent="1"
motion:layout_constraintStart_toStartOf="parent"
motion:layout_constraintWidth_default="percent"
motion:layout_constraintWidth_percent="1" />
<Constraint
android:id="@id/second_layout"
android:layout_width="0dp"
android:layout_height="0dp"
motion:layout_constraintEnd_toStartOf="parent"
motion:layout_constraintHeight_default="percent"
motion:layout_constraintHeight_percent="1"
motion:layout_constraintWidth_default="percent"
motion:layout_constraintWidth_percent="1" />
</ConstraintSet>
<ConstraintSet android:id="@+id/b_end">
<Constraint
android:id="@id/first_layout"
android:layout_width="0dp"
android:layout_height="0dp"
motion:layout_constraintHeight_default="percent"
motion:layout_constraintHeight_percent="1"
motion:layout_constraintStart_toEndOf="parent"
motion:layout_constraintWidth_default="percent"
motion:layout_constraintWidth_percent="1" />
<Constraint
android:id="@id/second_layout"
android:layout_width="0dp"
android:layout_height="0dp"
motion:layout_constraintHeight_default="percent"
motion:layout_constraintHeight_percent="1"
motion:layout_constraintStart_toStartof="parent"
motion:layout_constraintWidth_default="percent"
motion:layout_constraintWidth_percent="1" />
</ConstraintSet>
解决方案是将过渡从左到右更改为从右到左，所以我只是将代码更改为：
<Transition
android:id="@+id/transition_a_to_b"
motion:constraintSetEnd="@id/b_end"
motion:constraintSetStart="@id/b_start"
motion:duration="200" />
<ConstraintSet android:id="@+id/b_start">
<Constraint
android:id="@id/first_layout"
android:layout_width="0dp"
android:layout_height="0dp"
motion:layout_constraintHeight_default="percent"
motion:layout_constraintHeight_percent="1"
motion:layout_constraintStart_toStartOf="parent"
motion:layout_constraintWidth_default="percent"
motion:layout_constraintWidth_percent="1" />
<Constraint
android:id="@id/second_layout"
android:layout_width="0dp"
android:layout_height="0dp"
motion:layout_constraintStart_toEndOf="parent"
motion:layout_constraintHeight_default="percent"
motion:layout_constraintHeight_percent="1"
motion:layout_constraintWidth_default="percent"
motion:layout_constraintWidth_percent="1" />
</ConstraintSet>
<ConstraintSet android:id="@+id/b_end">
<Constraint
android:id="@id/first_layout"
android:layout_width="0dp"
android:layout_height="0dp"
motion:layout_constraintHeight_default="percent"
motion:layout_constraintHeight_percent="1"
motion:layout_constraintEnd_toStartOf="parent"
motion:layout_constraintWidth_default="percent"
motion:layout_constraintWidth_percent="1" />
<Constraint
android:id="@id/second_layout"
android:layout_width="0dp"
android:layout_height="0dp"
motion:layout_constraintHeight_default="percent"
motion:layout_constraintHeight_percent="1"
motion:layout_constraintStart_toStartof="parent"
motion:layout_constraintWidth_default="percent"
motion:layout_constraintWidth_percent="1" />
</ConstraintSet>
经过数小时的尝试解决此问题（崩溃）后，问题是由 TextInputEditText 产生的，因为如果我将其从 TextInputLayout 中删除，旧动画将正常工作。
最后，我正在使用最新版本的 androidX、material 设计和约束布局
问题
TextInputLayout 会绘制不正常所以得不到焦点，原因是他的parent的Constraint（Constraint of ConstraintSet of Transition）。
注意：我的动画是in-animation，secound_layout是TextInputLayout的父类
// This Constraint is child of ConstraintSet of end transition
<Constraint
android:id="@id/second_layout"
// attrs are correct but the problem generated by them
// this is attrs are the problem of bad drawn
android:layout_width="0dp"
android:layout_height="0dp"
motion:layout_constraintStart_toStartof="parent"
// this is attrs are the problem of bad drawn
motion:layout_constraintHeight_default="percent"
motion:layout_constraintHeight_percent="1"
motion:layout_constraintWidth_default="percent"
motion:layout_constraintWidth_percent="1" />
解决方案
使用：
android:layout_width="match_parent
android:layout_height="match_parent"
在 TextInputLayout 的父 Constraint 中，在转换的开始或结束 ConstraintSet 中（取决于您的情况）。
所以如果你的动画是“IN”，在结尾的ConstraintSet中设置父宽度和高度的Constraint为“match_parent”，或者如果动画是“OUT”，设置父宽度的Constraint & height to "match_parent" in ConstraintSet of start.
在我的情况下，TextInputLayout的parent是“second_layout”，动画是“IN”，所以end的ConstraintSet中“second_layout”的宽高Constraint应该是设置为“match_parent”。
代码将是：
<Transition
android:id="@+id/transition_a_to_b"
motion:constraintSetEnd="@id/b_end"
motion:constraintSetStart="@id/b_start"
motion:duration="200" />
<ConstraintSet android:id="@+id/b_start">
<Constraint
android:id="@id/first_layout"
android:layout_width="0dp"
android:layout_height="0dp"
motion:layout_constraintHeight_default="percent"
motion:layout_constraintHeight_percent="1"
motion:layout_constraintStart_toStartOf="parent"
motion:layout_constraintWidth_default="percent"
motion:layout_constraintWidth_percent="1" />
<Constraint
android:id="@id/second_layout"
android:layout_width="0dp"
android:layout_height="0dp"
motion:layout_constraintStart_toEndOf="parent"
motion:layout_constraintHeight_default="percent"
motion:layout_constraintHeight_percent="1"
motion:layout_constraintWidth_default="percent"
motion:layout_constraintWidth_percent="1" />
</ConstraintSet>
<ConstraintSet android:id="@+id/b_end">
<Constraint
android:id="@id/first_layout"
android:layout_width="0dp"
android:layout_height="0dp"
motion:layout_constraintHeight_default="percent"
motion:layout_constraintHeight_percent="1"
motion:layout_constraintEnd_toStartof="parent"
motion:layout_constraintWidth_default="percent"
motion:layout_constraintWidth_percent="1"
/>
<Constraint
android:id="@id/second_layout"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</ConstraintSet>
应将此问题告知 Material 设计团队，因为该问题存在于其他实现中。
有MotionLayout，里面有很多ConstraintLayout，有的ConstraintLayout有TextInputLayout。
1-使用 android studio XML 设计预览时： 在启动器“ideal/landing”状态下没有错误，当我开始为 ConstraintLayout（开始显示视图）制作动画时，里面有 TextInputLayout，出现视图崩溃和渲染问题，并出现 onMeasure 错误（详细信息：java.lang.NullPointerException )
2-当我 运行 应用程序（真实设备）时： 动画工作正常，没有错误，但问题是：TextInputLayout 不（完全）关注 tap/click 并且键盘正常显示，当我尝试像垃圾邮件一样强制关注时 taps/clicks 没有任何反应，但是当我使用键盘写一些文本，文本出现在 TextInputLayout 中但根本没有焦点，之后如果我再次 tap/click（在写了一些文本之后），TextInputLayout 获得焦点。
片段XMl文件：
<androidx.constraintlayout.motion.widget.MotionLayout
android:id="@+id/secondProfileLayout"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_marginTop="@dimen/my25dp"
app:layoutDescription="@xml/fragment_dashboard_profile_scene"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHorizontal_chainStyle="spread"
app:layout_constraintTop_toBottomOf="@id/user_access">
<androidx.constraintlayout.widget.ConstraintLayout
>
this ConstraintLayout 1
</androidx.constraintlayout.widget.ConstraintLayout>
<androidx.constraintlayout.widget.ConstraintLayout
>
this ConstraintLayout 2
</androidx.constraintlayout.widget.ConstraintLayout>
<androidx.constraintlayout.widget.ConstraintLayout
>
<com.google.android.material.textfield.TextInputLayout
android:id="@+id/id"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginStart="@dimen/my35dp"
android:layout_marginTop="@dimen/my10dp"
android:layout_marginEnd="@dimen/my35dp"
android:hint="@string/worker_code"
app:errorContentDescription="@string/wrong_code"
app:errorEnabled="false"
app:hintAnimationEnabled="true"
app:hintEnabled="true"
layout_constraint...
>
<com.google.android.material.textfield.TextInputEditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:imeOptions="actionDone"
android:importantForAutofill="auto"
android:inputType="text" />
</com.google.android.material.textfield.TextInputLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.constraintlayout.motion.widget.MotionLayout>
Java代码： 没意思，只有这两行： 1- bind.motionLayout.transitionToEnd(); 2- bind.textLayoutInput.getEditText().getText().toString();
注意：当我从 TextLayoutInput 中删除 TextInputEditText 时（留空），没有出现错误（没有渲染问题），可能是与 TextInputEditText 相关的问题。
注意 2：如果我从 TextLayoutInput 中删除此属性：
app:errorContentDescription="@string/wrong_code"
app:errorEnabled="false"
app:hintAnimationEnabled="true"
app:hintEnabled="true"
此问题出现，此外，测量错误呈现问题：
java.lang.NullPointerException
at android.content.res.Resources_Delegate.getResourceInfo(Resources_Delegate.java:144)
at android.content.res.Resources_Delegate.getResourceName(Resources_Delegate.java:743)
at android.content.res.Resources.getResourceName(Resources.java:2064)
at androidx.constraintlayout.widget.ConstraintLayout.setChildrenConstraints(ConstraintLayout.java:1170)
at androidx.constraintlayout.widget.ConstraintLayout.updateHierarchy(ConstraintLayout.java:1143)
at androidx.constraintlayout.widget.ConstraintLayout.onMeasure_Original(ConstraintLayout.java:1703)
at androidx.constraintlayout.widget.ConstraintLayout.onMeasure(ConstraintLayout.java)
at android.view.View.measure_Original(View.java:24552)
at android.view.View_Delegate.measure(View_Delegate.java:80)
at android.view.View.measure(View.java:24516)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6828)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:194)
at android.view.View.measure_Original(View.java:24552)
at android.view.View_Delegate.measure(View_Delegate.java:80)
at android.view.View.measure(View.java:24516)
at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:735)
at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:481)
at android.view.View.measure_Original(View.java:24552)
at android.view.View_Delegate.measure(View_Delegate.java:80)
at android.view.View.measure(View.java:24516)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:6828)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:194)
at android.view.View.measure_Original(View.java:24552)
at android.view.View_Delegate.measure(View_Delegate.java:80)
at android.view.View.measure(View.java:24516)
at com.android.layoutlib.bridge.impl.RenderSessionImpl.measureView(RenderSessionImpl.java:638)
at com.android.layoutlib.bridge.impl.RenderSessionImpl.doLayout(RenderSessionImpl.java:406)
at com.android.layoutlib.bridge.impl.RenderSessionImpl.renderAndBuildResult(RenderSessionImpl.java:546)
at com.android.layoutlib.bridge.impl.RenderSessionImpl.render(RenderSessionImpl.java:449)
at com.android.layoutlib.bridge.BridgeRenderSession.render(BridgeRenderSession.java:123)
at com.android.ide.common.rendering.api.RenderSession.render(RenderSession.java:143)
at com.android.ide.common.rendering.api.RenderSession.render(RenderSession.java:125)
at com.android.tools.idea.rendering.RenderTask.lambda$null(RenderTask.java:966)
at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1604)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
图片： after animation end and I tap/click the TextInputEditText one time
after one tap, I try to force write with no focus but the text is written
after some text is written, I tap again and I get focus
if I delete the text, focus lose and we back to the start of the problem
更新
经过一些测试和尝试找出解决方案，找到了渲染错误“onmeasure()”的解决方案，但它并不有效（如果我使用旧代码，则存在崩溃窃取），但 TextInputLayout 没有收到完全专注。
注意：TextinputLayout 是 ID 为 'second_layout'
的 ConstraintLayout 的子项动画很简单，从左到右过渡，这是我的旧 MotionLayout 布局描述如下：
<Transition
android:id="@+id/transition_a_to_b"
motion:constraintSetEnd="@id/b_end"
motion:constraintSetStart="@id/b_start"
motion:duration="200" />
<ConstraintSet android:id="@+id/b_start">
<Constraint
android:id="@id/first_layout"
android:layout_width="0dp"
android:layout_height="0dp"
motion:layout_constraintHeight_default="percent"
motion:layout_constraintHeight_percent="1"
motion:layout_constraintStart_toStartOf="parent"
motion:layout_constraintWidth_default="percent"
motion:layout_constraintWidth_percent="1" />
<Constraint
android:id="@id/second_layout"
android:layout_width="0dp"
android:layout_height="0dp"
motion:layout_constraintEnd_toStartOf="parent"
motion:layout_constraintHeight_default="percent"
motion:layout_constraintHeight_percent="1"
motion:layout_constraintWidth_default="percent"
motion:layout_constraintWidth_percent="1" />
</ConstraintSet>
<ConstraintSet android:id="@+id/b_end">
<Constraint
android:id="@id/first_layout"
android:layout_width="0dp"
android:layout_height="0dp"
motion:layout_constraintHeight_default="percent"
motion:layout_constraintHeight_percent="1"
motion:layout_constraintStart_toEndOf="parent"
motion:layout_constraintWidth_default="percent"
motion:layout_constraintWidth_percent="1" />
<Constraint
android:id="@id/second_layout"
android:layout_width="0dp"
android:layout_height="0dp"
motion:layout_constraintHeight_default="percent"
motion:layout_constraintHeight_percent="1"
motion:layout_constraintStart_toStartof="parent"
motion:layout_constraintWidth_default="percent"
motion:layout_constraintWidth_percent="1" />
</ConstraintSet>
解决方案是将过渡从左到右更改为从右到左，所以我只是将代码更改为：
<Transition
android:id="@+id/transition_a_to_b"
motion:constraintSetEnd="@id/b_end"
motion:constraintSetStart="@id/b_start"
motion:duration="200" />
<ConstraintSet android:id="@+id/b_start">
<Constraint
android:id="@id/first_layout"
android:layout_width="0dp"
android:layout_height="0dp"
motion:layout_constraintHeight_default="percent"
motion:layout_constraintHeight_percent="1"
motion:layout_constraintStart_toStartOf="parent"
motion:layout_constraintWidth_default="percent"
motion:layout_constraintWidth_percent="1" />
<Constraint
android:id="@id/second_layout"
android:layout_width="0dp"
android:layout_height="0dp"
motion:layout_constraintStart_toEndOf="parent"
motion:layout_constraintHeight_default="percent"
motion:layout_constraintHeight_percent="1"
motion:layout_constraintWidth_default="percent"
motion:layout_constraintWidth_percent="1" />
</ConstraintSet>
<ConstraintSet android:id="@+id/b_end">
<Constraint
android:id="@id/first_layout"
android:layout_width="0dp"
android:layout_height="0dp"
motion:layout_constraintHeight_default="percent"
motion:layout_constraintHeight_percent="1"
motion:layout_constraintEnd_toStartOf="parent"
motion:layout_constraintWidth_default="percent"
motion:layout_constraintWidth_percent="1" />
<Constraint
android:id="@id/second_layout"
android:layout_width="0dp"
android:layout_height="0dp"
motion:layout_constraintHeight_default="percent"
motion:layout_constraintHeight_percent="1"
motion:layout_constraintStart_toStartof="parent"
motion:layout_constraintWidth_default="percent"
motion:layout_constraintWidth_percent="1" />
</ConstraintSet>
经过数小时的尝试解决此问题（崩溃）后，问题是由 TextInputEditText 产生的，因为如果我将其从 TextInputLayout 中删除，旧动画将正常工作。
最后，我正在使用最新版本的 androidX、material 设计和约束布局
问题
TextInputLayout 会绘制不正常所以得不到焦点，原因是他的parent的Constraint（Constraint of ConstraintSet of Transition）。
注意：我的动画是in-animation，secound_layout是TextInputLayout的父类
// This Constraint is child of ConstraintSet of end transition
<Constraint
android:id="@id/second_layout"
// attrs are correct but the problem generated by them
// this is attrs are the problem of bad drawn
android:layout_width="0dp"
android:layout_height="0dp"
motion:layout_constraintStart_toStartof="parent"
// this is attrs are the problem of bad drawn
motion:layout_constraintHeight_default="percent"
motion:layout_constraintHeight_percent="1"
motion:layout_constraintWidth_default="percent"
motion:layout_constraintWidth_percent="1" />
解决方案
使用：
android:layout_width="match_parent
android:layout_height="match_parent"
在 TextInputLayout 的父 Constraint 中，在转换的开始或结束 ConstraintSet 中（取决于您的情况）。
所以如果你的动画是“IN”，在结尾的ConstraintSet中设置父宽度和高度的Constraint为“match_parent”，或者如果动画是“OUT”，设置父宽度的Constraint & height to "match_parent" in ConstraintSet of start.
在我的情况下，TextInputLayout的parent是“second_layout”，动画是“IN”，所以end的ConstraintSet中“second_layout”的宽高Constraint应该是设置为“match_parent”。 代码将是：
<Transition
android:id="@+id/transition_a_to_b"
motion:constraintSetEnd="@id/b_end"
motion:constraintSetStart="@id/b_start"
motion:duration="200" />
<ConstraintSet android:id="@+id/b_start">
<Constraint
android:id="@id/first_layout"
android:layout_width="0dp"
android:layout_height="0dp"
motion:layout_constraintHeight_default="percent"
motion:layout_constraintHeight_percent="1"
motion:layout_constraintStart_toStartOf="parent"
motion:layout_constraintWidth_default="percent"
motion:layout_constraintWidth_percent="1" />
<Constraint
android:id="@id/second_layout"
android:layout_width="0dp"
android:layout_height="0dp"
motion:layout_constraintStart_toEndOf="parent"
motion:layout_constraintHeight_default="percent"
motion:layout_constraintHeight_percent="1"
motion:layout_constraintWidth_default="percent"
motion:layout_constraintWidth_percent="1" />
</ConstraintSet>
<ConstraintSet android:id="@+id/b_end">
<Constraint
android:id="@id/first_layout"
android:layout_width="0dp"
android:layout_height="0dp"
motion:layout_constraintHeight_default="percent"
motion:layout_constraintHeight_percent="1"
motion:layout_constraintEnd_toStartof="parent"
motion:layout_constraintWidth_default="percent"
motion:layout_constraintWidth_percent="1"
/>
<Constraint
android:id="@id/second_layout"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</ConstraintSet>
应将此问题告知 Material 设计团队，因为该问题存在于其他实现中。