ConstraintLayout 内的 ScrollView 没有完全滚动到底部
ScrollView inside ConstraintLayout not scrolling entirely to the bottom
我不得不在我的 Dialog 布局中引入一个 ScrollView 以在 phone 处于横向模式或应用程序处于 运行 小屏幕时显示所有布局屏幕。但是，布局的底部被截断了。
我尝试了不同的方法，例如设置 ScrollView 的 layout_height = "0dp"、添加更多约束、将 ScrollView 替换为 NestedScrollView 以及其他一些小东西 clipToPadding = false 或 fillViewPort = true 但其中 none 有效。
这是我目前使用的布局 Dialog 我需要：
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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">
<androidx.constraintlayout.widget.ConstraintLayout
android:id="@+id/icon_image_container"
android:layout_width="match_parent"
android:layout_height="80dp"
android:background="@color/colorPrimary"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<ImageView
android:id="@+id/icon_image"
android:layout_width="50dp"
android:layout_height="50dp"
android:background="@drawable/ic_help_outline_white_24dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:ignore="ContentDescription" />
</androidx.constraintlayout.widget.ConstraintLayout>
<ScrollView
android:id="@+id/message_container"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:scrollbars="none"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/icon_image_container">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="16dp">
<TextView
android:id="@+id/help_title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textAlignment="center"
android:textAppearance="@style/TextAppearance.AppCompat.Headline"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="@+id/help_message"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/internal_margin_views"
android:textAlignment="textStart"
android:textAppearance="@style/TextAppearance.AppCompat.Medium"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/help_title" />
<TextView
android:id="@+id/help_example_title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/internal_margin_views"
android:text="@string/help_dialog_example_title"
android:textAlignment="center"
android:textAppearance="@style/TextAppearance.AppCompat.Headline"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/help_message" />
<TextView
android:id="@+id/help_example_message"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/internal_margin_views"
android:textAlignment="textStart"
android:textAppearance="@style/TextAppearance.AppCompat.Medium"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/help_example_title" />
<Button
android:id="@+id/help_button_ok"
android:layout_width="200dp"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/internal_margin_views"
android:background="@drawable/button_background"
android:text="@string/help_dialog_button_ok"
android:textAlignment="center"
android:textColor="@color/colorPrimary"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/help_example_message" />
</androidx.constraintlayout.widget.ConstraintLayout>
</ScrollView>
</androidx.constraintlayout.widget.ConstraintLayout>
这就是上面 xml 布局的显示方式。图像显示滚动视图尽可能滚动到底部。
我一直被困在这个问题上。任何帮助将不胜感激
将 scrollview 高度更改为 0dp 并将其限制在父元素的底部应该可以解决您的问题
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
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">
<androidx.constraintlayout.widget.ConstraintLayout
android:id="@+id/icon_image_container"
android:layout_width="match_parent"
android:layout_height="80dp"
android:background="@color/colorPrimary"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<ImageView
android:id="@+id/icon_image"
android:layout_width="50dp"
android:layout_height="50dp"
android:background="@drawable/ic_help_outline_white_24dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:ignore="ContentDescription" />
</androidx.constraintlayout.widget.ConstraintLayout>
<ScrollView
android:id="@+id/message_container"
android:layout_width="match_parent"
android:layout_height="0dp"
android:scrollbars="none"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintTop_toBottomOf="@id/icon_image_container">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="16dp">
<TextView
android:id="@+id/help_title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textAlignment="center"
android:textAppearance="@style/TextAppearance.AppCompat.Headline"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="@+id/help_message"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/internal_margin_views"
android:textAlignment="textStart"
android:textAppearance="@style/TextAppearance.AppCompat.Medium"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/help_title" />
<TextView
android:id="@+id/help_example_title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/internal_margin_views"
android:text="@string/help_dialog_example_title"
android:textAlignment="center"
android:textAppearance="@style/TextAppearance.AppCompat.Headline"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/help_message" />
<TextView
android:id="@+id/help_example_message"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/internal_margin_views"
android:textAlignment="textStart"
android:textAppearance="@style/TextAppearance.AppCompat.Medium"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/help_example_title" />
<Button
android:id="@+id/help_button_ok"
android:layout_width="200dp"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/internal_margin_views"
android:background="@drawable/button_background"
android:text="@string/help_dialog_button_ok"
android:textAlignment="center"
android:textColor="@color/colorPrimary"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/help_example_message" />
</androidx.constraintlayout.widget.ConstraintLayout>
</ScrollView>
</androidx.constraintlayout.widget.ConstraintLayout>
我post答案以防有人遇到同样的问题。我只是将根布局从 ConstraintLayout 替换为 LinearLayout 和 orientation = "vertical" 以及 ScrollView.
内的布局
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
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">
<androidx.constraintlayout.widget.ConstraintLayout
android:id="@+id/icon_image_container"
android:layout_width="match_parent"
android:layout_height="80dp"
android:background="@color/colorPrimary"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<ImageView
android:id="@+id/icon_image"
android:layout_width="50dp"
android:layout_height="50dp"
android:background="@drawable/ic_help_outline_white_24dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:ignore="ContentDescription" />
</androidx.constraintlayout.widget.ConstraintLayout>
<ScrollView
android:id="@+id/message_container"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:scrollbars="none"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/icon_image_container">
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="16dp">
<TextView
android:id="@+id/help_title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textAlignment="center"
android:textAppearance="@style/TextAppearance.AppCompat.Headline" />
<TextView
android:id="@+id/help_message"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/internal_margin_views"
android:textAlignment="textStart"
android:textAppearance="@style/TextAppearance.AppCompat.Medium" />
<TextView
android:id="@+id/help_example_title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/internal_margin_views"
android:text="@string/help_dialog_example_title"
android:textAlignment="center"
android:textAppearance="@style/TextAppearance.AppCompat.Headline" />
<TextView
android:id="@+id/help_example_message"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/internal_margin_views"
android:textAlignment="textStart"
android:textAppearance="@style/TextAppearance.AppCompat.Medium" />
<Button
android:id="@+id/help_button_ok"
android:layout_width="200dp"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/internal_margin_views"
android:background="@drawable/button_background"
android:text="@string/help_dialog_button_ok"
android:textAlignment="center"
android:textColor="@color/colorPrimary" />
</LinearLayout>
</ScrollView>
</androidx.constraintlayout.widget.ConstraintLayout>
我不得不在我的 Dialog 布局中引入一个 ScrollView 以在 phone 处于横向模式或应用程序处于 运行 小屏幕时显示所有布局屏幕。但是，布局的底部被截断了。
我尝试了不同的方法，例如设置 ScrollView 的 layout_height = "0dp"、添加更多约束、将 ScrollView 替换为 NestedScrollView 以及其他一些小东西 clipToPadding = false 或 fillViewPort = true 但其中 none 有效。
这是我目前使用的布局 Dialog 我需要：
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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">
<androidx.constraintlayout.widget.ConstraintLayout
android:id="@+id/icon_image_container"
android:layout_width="match_parent"
android:layout_height="80dp"
android:background="@color/colorPrimary"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<ImageView
android:id="@+id/icon_image"
android:layout_width="50dp"
android:layout_height="50dp"
android:background="@drawable/ic_help_outline_white_24dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:ignore="ContentDescription" />
</androidx.constraintlayout.widget.ConstraintLayout>
<ScrollView
android:id="@+id/message_container"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:scrollbars="none"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/icon_image_container">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="16dp">
<TextView
android:id="@+id/help_title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textAlignment="center"
android:textAppearance="@style/TextAppearance.AppCompat.Headline"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="@+id/help_message"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/internal_margin_views"
android:textAlignment="textStart"
android:textAppearance="@style/TextAppearance.AppCompat.Medium"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/help_title" />
<TextView
android:id="@+id/help_example_title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/internal_margin_views"
android:text="@string/help_dialog_example_title"
android:textAlignment="center"
android:textAppearance="@style/TextAppearance.AppCompat.Headline"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/help_message" />
<TextView
android:id="@+id/help_example_message"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/internal_margin_views"
android:textAlignment="textStart"
android:textAppearance="@style/TextAppearance.AppCompat.Medium"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/help_example_title" />
<Button
android:id="@+id/help_button_ok"
android:layout_width="200dp"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/internal_margin_views"
android:background="@drawable/button_background"
android:text="@string/help_dialog_button_ok"
android:textAlignment="center"
android:textColor="@color/colorPrimary"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/help_example_message" />
</androidx.constraintlayout.widget.ConstraintLayout>
</ScrollView>
</androidx.constraintlayout.widget.ConstraintLayout>
这就是上面 xml 布局的显示方式。图像显示滚动视图尽可能滚动到底部。
我一直被困在这个问题上。任何帮助将不胜感激
将 scrollview 高度更改为 0dp 并将其限制在父元素的底部应该可以解决您的问题
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
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">
<androidx.constraintlayout.widget.ConstraintLayout
android:id="@+id/icon_image_container"
android:layout_width="match_parent"
android:layout_height="80dp"
android:background="@color/colorPrimary"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<ImageView
android:id="@+id/icon_image"
android:layout_width="50dp"
android:layout_height="50dp"
android:background="@drawable/ic_help_outline_white_24dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:ignore="ContentDescription" />
</androidx.constraintlayout.widget.ConstraintLayout>
<ScrollView
android:id="@+id/message_container"
android:layout_width="match_parent"
android:layout_height="0dp"
android:scrollbars="none"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintTop_toBottomOf="@id/icon_image_container">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="16dp">
<TextView
android:id="@+id/help_title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textAlignment="center"
android:textAppearance="@style/TextAppearance.AppCompat.Headline"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<TextView
android:id="@+id/help_message"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/internal_margin_views"
android:textAlignment="textStart"
android:textAppearance="@style/TextAppearance.AppCompat.Medium"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/help_title" />
<TextView
android:id="@+id/help_example_title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/internal_margin_views"
android:text="@string/help_dialog_example_title"
android:textAlignment="center"
android:textAppearance="@style/TextAppearance.AppCompat.Headline"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/help_message" />
<TextView
android:id="@+id/help_example_message"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/internal_margin_views"
android:textAlignment="textStart"
android:textAppearance="@style/TextAppearance.AppCompat.Medium"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/help_example_title" />
<Button
android:id="@+id/help_button_ok"
android:layout_width="200dp"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/internal_margin_views"
android:background="@drawable/button_background"
android:text="@string/help_dialog_button_ok"
android:textAlignment="center"
android:textColor="@color/colorPrimary"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/help_example_message" />
</androidx.constraintlayout.widget.ConstraintLayout>
</ScrollView>
</androidx.constraintlayout.widget.ConstraintLayout>
我post答案以防有人遇到同样的问题。我只是将根布局从 ConstraintLayout 替换为 LinearLayout 和 orientation = "vertical" 以及 ScrollView.
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
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">
<androidx.constraintlayout.widget.ConstraintLayout
android:id="@+id/icon_image_container"
android:layout_width="match_parent"
android:layout_height="80dp"
android:background="@color/colorPrimary"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<ImageView
android:id="@+id/icon_image"
android:layout_width="50dp"
android:layout_height="50dp"
android:background="@drawable/ic_help_outline_white_24dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:ignore="ContentDescription" />
</androidx.constraintlayout.widget.ConstraintLayout>
<ScrollView
android:id="@+id/message_container"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:scrollbars="none"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@id/icon_image_container">
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="16dp">
<TextView
android:id="@+id/help_title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textAlignment="center"
android:textAppearance="@style/TextAppearance.AppCompat.Headline" />
<TextView
android:id="@+id/help_message"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/internal_margin_views"
android:textAlignment="textStart"
android:textAppearance="@style/TextAppearance.AppCompat.Medium" />
<TextView
android:id="@+id/help_example_title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/internal_margin_views"
android:text="@string/help_dialog_example_title"
android:textAlignment="center"
android:textAppearance="@style/TextAppearance.AppCompat.Headline" />
<TextView
android:id="@+id/help_example_message"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/internal_margin_views"
android:textAlignment="textStart"
android:textAppearance="@style/TextAppearance.AppCompat.Medium" />
<Button
android:id="@+id/help_button_ok"
android:layout_width="200dp"
android:layout_height="wrap_content"
android:layout_marginTop="@dimen/internal_margin_views"
android:background="@drawable/button_background"
android:text="@string/help_dialog_button_ok"
android:textAlignment="center"
android:textColor="@color/colorPrimary" />
</LinearLayout>
</ScrollView>
</androidx.constraintlayout.widget.ConstraintLayout>