Android 约束布局：layout_constraintDimensionRatio 不工作
Android ConstraintLayout : layout_constraintDimensionRatio Not working
所以我正在尝试创建一个包含 ScrollView 的视图。 ScrollView 包含 2 列 4 个 ImageButton。我希望 ImageButton 始终为正方形，因此我使用 layout_constraintDimensionRatio=1:1。我也在使用 layout_constraintHorizontal_weight=0.5 这样每个 ImageButton 应该是 50% 宽
但是每个方块都显示为 100% 宽？
<android.support.constraint.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:id="@+id/activity_form"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/colorAccent">
<ScrollView
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="0dp"
android:layout_marginLeft="24dp"
android:layout_marginRight="24dp"
android:layout_marginTop="0dp"
android:background="@color/colorPrimary"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.0">
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="@+id/title1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:text="Your story starts here"
android:textColor="#ffffff"
android:textSize="20sp"
app:layout_constraintLeft_toRightOf="@+id/left_main_guideline"
app:layout_constraintRight_toLeftOf="@+id/right_main_guideline"
app:layout_constraintTop_toTopOf="parent"
android:layout_marginTop="16dp"
app:layout_constraintHorizontal_bias="0.0" />
<EditText
android:id="@+id/editText"
android:layout_width="300px"
android:layout_height="wrap_content"
android:layout_marginLeft="0dp"
android:layout_marginTop="16dp"
android:background="@android:color/background_light"
android:inputType="textPersonName"
android:text="Name"
android:padding="5dp"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toRightOf="@+id/left_main_guideline"
app:layout_constraintRight_toLeftOf="@+id/right_main_guideline"
app:layout_constraintTop_toBottomOf="@+id/title1" />
<TextView
android:id="@+id/title2"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:textColor="#ffffff"
android:text="Choose what matters to you"
android:textSize="20sp"
android:layout_marginTop="16dp"
app:layout_constraintLeft_toRightOf="@+id/left_main_guideline"
app:layout_constraintRight_toLeftOf="@+id/right_main_guideline"
app:layout_constraintTop_toBottomOf="@+id/editText" />
<ImageButton
android:id="@+id/left1"
style="?android:attr/borderlessButtonStyle"
android:padding="0dp"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintDimensionRatio="1:1"
app:layout_constraintHorizontal_weight="0.5"
app:layout_constraintTop_toBottomOf="@+id/title2"
app:layout_constraintBottom_toTopOf="@+id/left2"
app:layout_constraintLeft_toRightOf="@+id/left_main_guideline"
app:layout_constraintRight_toLeftOf="@+id/right1"
app:srcCompat="@color/colorAccent" />
<ImageButton
android:id="@+id/right1"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:padding="0dp"
app:layout_constraintDimensionRatio="1:1"
app:layout_constraintHorizontal_weight="0.5"
app:layout_constraintTop_toBottomOf="@+id/title2"
app:layout_constraintBottom_toTopOf="@+id/right2"
app:layout_constraintLeft_toRightOf="@+id/left1"
app:layout_constraintRight_toLeftOf="@+id/right_main_guideline"
app:srcCompat="@android:color/holo_orange_dark" />
<ImageButton
android:id="@+id/left2"
style="?android:attr/borderlessButtonStyle"
android:padding="0dp"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintDimensionRatio="1:1"
app:layout_constraintHorizontal_weight="0.5"
app:layout_constraintTop_toBottomOf="@+id/left1"
app:layout_constraintBottom_toTopOf="@+id/left3"
app:layout_constraintLeft_toRightOf="@+id/left_main_guideline"
app:layout_constraintRight_toLeftOf="@+id/right2"
app:srcCompat="@color/colorPrimaryDark" />
<ImageButton
android:id="@+id/right2"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:padding="0dp"
app:layout_constraintDimensionRatio="1:1"
app:layout_constraintHorizontal_weight="0.5"
app:layout_constraintTop_toBottomOf="@+id/right1"
app:layout_constraintBottom_toTopOf="@+id/right3"
app:layout_constraintLeft_toRightOf="@+id/left2"
app:layout_constraintRight_toLeftOf="@+id/right_main_guideline"
app:srcCompat="@android:color/holo_red_light" />
<ImageButton
android:id="@+id/left3"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:padding="0dp"
app:layout_constraintDimensionRatio="1:1"
app:layout_constraintHorizontal_weight="0.5"
app:layout_constraintTop_toBottomOf="@+id/left2"
app:layout_constraintBottom_toTopOf="@+id/left4"
app:layout_constraintLeft_toRightOf="@+id/left_main_guideline"
app:layout_constraintRight_toLeftOf="@+id/right3"
app:srcCompat="@android:color/holo_green_light" />
<ImageButton
android:id="@+id/right3"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:padding="0dp"
app:layout_constraintDimensionRatio="1:1"
app:layout_constraintHorizontal_weight="0.5"
app:layout_constraintTop_toBottomOf="@+id/right2"
app:layout_constraintBottom_toTopOf="@+id/right4"
app:layout_constraintLeft_toRightOf="@+id/left3"
app:layout_constraintRight_toLeftOf="@+id/right_main_guideline"
app:srcCompat="@android:color/holo_blue_bright" />
<ImageButton
android:id="@+id/left4"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:padding="0dp"
app:layout_constraintDimensionRatio="1:1"
app:layout_constraintHorizontal_weight="0.5"
app:layout_constraintBottom_toTopOf="@+id/button"
app:layout_constraintLeft_toRightOf="@+id/left_main_guideline"
app:layout_constraintRight_toLeftOf="@+id/right4"
app:layout_constraintTop_toBottomOf="@+id/left3"
app:srcCompat="@android:color/holo_blue_dark" />
<ImageButton
android:id="@+id/right4"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:padding="0dp"
app:layout_constraintDimensionRatio="1:1"
app:layout_constraintHorizontal_weight="0.5"
app:layout_constraintBottom_toTopOf="@+id/button"
app:layout_constraintLeft_toRightOf="@+id/left4"
app:layout_constraintRight_toLeftOf="@+id/right_main_guideline"
app:layout_constraintTop_toBottomOf="@+id/right3"
app:srcCompat="?attr/colorControlHighlight" />
<Button
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:text="See your O2 Home Story"
android:id="@+id/button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="@+id/rightBottomButton" />
<android.support.constraint.Guideline
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/left_main_guideline"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.0"
tools:layout_editor_absoluteY="0dp"
tools:layout_editor_absoluteX="0dp" />
<android.support.constraint.Guideline
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/right_main_guideline"
android:orientation="vertical"
app:layout_constraintGuide_percent="1.0"
tools:layout_editor_absoluteY="0dp"
tools:layout_editor_absoluteX="360dp" />
</android.support.constraint.ConstraintLayout>
</ScrollView>
</android.support.constraint.ConstraintLayout>
更改图像按钮 right2、right3 和 right4，将其顶部分别限制为 left2、left3 和 left4。像这样的 right2:
app:layout_constraintTop_toTopOf="@id/left2"
另外，从 left1 中删除以下行。我认为这只是一个错误。
app:layout_constraintBottom_toTopOf="@+id/left2"
这会给你一个看起来像 this demo.
的显示
我不知道为什么会这样。如果其他 reader 知道，我当然想听听答案。这是 XML:
已更改 XML
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.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:id="@+id/activity_form"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/colorAccent">
<ScrollView
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="0dp"
android:layout_marginLeft="24dp"
android:layout_marginRight="24dp"
android:layout_marginTop="0dp"
android:background="@color/colorPrimary"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.0">
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="@+id/title1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:text="Your story starts here"
android:textColor="#ffffff"
android:textSize="20sp"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toRightOf="@+id/left_main_guideline"
app:layout_constraintRight_toLeftOf="@+id/right_main_guideline"
app:layout_constraintTop_toTopOf="parent" />
<EditText
android:id="@+id/editText"
android:layout_width="300px"
android:layout_height="wrap_content"
android:layout_marginLeft="0dp"
android:layout_marginTop="16dp"
android:background="@android:color/background_light"
android:inputType="textPersonName"
android:padding="5dp"
android:text="Name"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toRightOf="@+id/left_main_guideline"
app:layout_constraintRight_toLeftOf="@+id/right_main_guideline"
app:layout_constraintTop_toBottomOf="@+id/title1" />
<TextView
android:id="@+id/title2"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:text="Choose what matters to you"
android:textColor="#ffffff"
android:textSize="20sp"
app:layout_constraintLeft_toRightOf="@+id/left_main_guideline"
app:layout_constraintRight_toLeftOf="@+id/right_main_guideline"
app:layout_constraintTop_toBottomOf="@+id/editText" />
<ImageButton
android:id="@+id/left1"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:padding="0dp"
app:layout_constraintDimensionRatio="1:1"
app:layout_constraintHorizontal_weight="0.5"
app:layout_constraintLeft_toRightOf="@+id/left_main_guideline"
app:layout_constraintRight_toLeftOf="@+id/right1"
app:layout_constraintTop_toBottomOf="@+id/title2"
app:srcCompat="@color/colorAccent" />
<ImageButton
android:id="@+id/right1"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:padding="0dp"
app:layout_constraintBottom_toTopOf="@+id/right2"
app:layout_constraintDimensionRatio="1:1"
app:layout_constraintHorizontal_weight="0.5"
app:layout_constraintLeft_toRightOf="@+id/left1"
app:layout_constraintRight_toLeftOf="@+id/right_main_guideline"
app:layout_constraintTop_toBottomOf="@+id/title2"
app:srcCompat="@android:color/holo_orange_dark" />
<ImageButton
android:id="@+id/left2"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:padding="0dp"
app:layout_constraintBottom_toTopOf="@+id/left3"
app:layout_constraintDimensionRatio="1:1"
app:layout_constraintHorizontal_weight="0.5"
app:layout_constraintLeft_toRightOf="@+id/left_main_guideline"
app:layout_constraintRight_toLeftOf="@+id/right2"
app:layout_constraintTop_toBottomOf="@id/left1"
app:srcCompat="@color/colorPrimaryDark" />
<ImageButton
android:id="@+id/right2"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:padding="0dp"
app:layout_constraintBottom_toTopOf="@+id/right3"
app:layout_constraintDimensionRatio="1:1"
app:layout_constraintHorizontal_weight="0.5"
app:layout_constraintLeft_toRightOf="@+id/left2"
app:layout_constraintRight_toLeftOf="@+id/right_main_guideline"
app:layout_constraintTop_toTopOf="@id/left2"
app:srcCompat="@android:color/holo_red_light" />
<ImageButton
android:id="@+id/left3"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:padding="0dp"
app:layout_constraintBottom_toTopOf="@+id/left4"
app:layout_constraintDimensionRatio="1:1"
app:layout_constraintHorizontal_weight="0.5"
app:layout_constraintLeft_toRightOf="@+id/left_main_guideline"
app:layout_constraintRight_toLeftOf="@+id/right3"
app:layout_constraintTop_toBottomOf="@id/left2"
app:srcCompat="@android:color/holo_green_light" />
<ImageButton
android:id="@+id/right3"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:padding="0dp"
app:layout_constraintBottom_toTopOf="@+id/right4"
app:layout_constraintDimensionRatio="1:1"
app:layout_constraintHorizontal_weight="0.5"
app:layout_constraintLeft_toRightOf="@+id/left3"
app:layout_constraintRight_toLeftOf="@+id/right_main_guideline"
app:layout_constraintTop_toTopOf="@id/left3"
app:srcCompat="@android:color/holo_blue_bright" />
<ImageButton
android:id="@+id/left4"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:padding="0dp"
app:layout_constraintBottom_toTopOf="@+id/button"
app:layout_constraintDimensionRatio="1:1"
app:layout_constraintHorizontal_weight="0.5"
app:layout_constraintLeft_toRightOf="@+id/left_main_guideline"
app:layout_constraintRight_toLeftOf="@+id/right4"
app:layout_constraintTop_toBottomOf="@id/left3"
app:srcCompat="@android:color/holo_blue_dark" />
<ImageButton
android:id="@+id/right4"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:padding="0dp"
app:layout_constraintBottom_toTopOf="@+id/button"
app:layout_constraintDimensionRatio="1:1"
app:layout_constraintHorizontal_weight="0.5"
app:layout_constraintLeft_toRightOf="@+id/left4"
app:layout_constraintRight_toLeftOf="@+id/right_main_guideline"
app:layout_constraintTop_toTopOf="@id/left4"
app:srcCompat="?attr/colorControlHighlight" />
<Button
android:id="@+id/button"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:text="See your O2 Home Story"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent" />
<android.support.constraint.Guideline
android:id="@+id/left_main_guideline"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.0"
tools:layout_editor_absoluteX="0dp"
tools:layout_editor_absoluteY="0dp" />
<android.support.constraint.Guideline
android:id="@+id/right_main_guideline"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="1.0"
tools:layout_editor_absoluteX="360dp"
tools:layout_editor_absoluteY="0dp" />
</android.support.constraint.ConstraintLayout>
</ScrollView>
</android.support.constraint.ConstraintLayout>
所以我正在尝试创建一个包含 ScrollView 的视图。 ScrollView 包含 2 列 4 个 ImageButton。我希望 ImageButton 始终为正方形，因此我使用 layout_constraintDimensionRatio=1:1。我也在使用 layout_constraintHorizontal_weight=0.5 这样每个 ImageButton 应该是 50% 宽
但是每个方块都显示为 100% 宽？
<android.support.constraint.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:id="@+id/activity_form"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/colorAccent">
<ScrollView
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="0dp"
android:layout_marginLeft="24dp"
android:layout_marginRight="24dp"
android:layout_marginTop="0dp"
android:background="@color/colorPrimary"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.0">
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="@+id/title1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:text="Your story starts here"
android:textColor="#ffffff"
android:textSize="20sp"
app:layout_constraintLeft_toRightOf="@+id/left_main_guideline"
app:layout_constraintRight_toLeftOf="@+id/right_main_guideline"
app:layout_constraintTop_toTopOf="parent"
android:layout_marginTop="16dp"
app:layout_constraintHorizontal_bias="0.0" />
<EditText
android:id="@+id/editText"
android:layout_width="300px"
android:layout_height="wrap_content"
android:layout_marginLeft="0dp"
android:layout_marginTop="16dp"
android:background="@android:color/background_light"
android:inputType="textPersonName"
android:text="Name"
android:padding="5dp"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toRightOf="@+id/left_main_guideline"
app:layout_constraintRight_toLeftOf="@+id/right_main_guideline"
app:layout_constraintTop_toBottomOf="@+id/title1" />
<TextView
android:id="@+id/title2"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:textColor="#ffffff"
android:text="Choose what matters to you"
android:textSize="20sp"
android:layout_marginTop="16dp"
app:layout_constraintLeft_toRightOf="@+id/left_main_guideline"
app:layout_constraintRight_toLeftOf="@+id/right_main_guideline"
app:layout_constraintTop_toBottomOf="@+id/editText" />
<ImageButton
android:id="@+id/left1"
style="?android:attr/borderlessButtonStyle"
android:padding="0dp"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintDimensionRatio="1:1"
app:layout_constraintHorizontal_weight="0.5"
app:layout_constraintTop_toBottomOf="@+id/title2"
app:layout_constraintBottom_toTopOf="@+id/left2"
app:layout_constraintLeft_toRightOf="@+id/left_main_guideline"
app:layout_constraintRight_toLeftOf="@+id/right1"
app:srcCompat="@color/colorAccent" />
<ImageButton
android:id="@+id/right1"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:padding="0dp"
app:layout_constraintDimensionRatio="1:1"
app:layout_constraintHorizontal_weight="0.5"
app:layout_constraintTop_toBottomOf="@+id/title2"
app:layout_constraintBottom_toTopOf="@+id/right2"
app:layout_constraintLeft_toRightOf="@+id/left1"
app:layout_constraintRight_toLeftOf="@+id/right_main_guideline"
app:srcCompat="@android:color/holo_orange_dark" />
<ImageButton
android:id="@+id/left2"
style="?android:attr/borderlessButtonStyle"
android:padding="0dp"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintDimensionRatio="1:1"
app:layout_constraintHorizontal_weight="0.5"
app:layout_constraintTop_toBottomOf="@+id/left1"
app:layout_constraintBottom_toTopOf="@+id/left3"
app:layout_constraintLeft_toRightOf="@+id/left_main_guideline"
app:layout_constraintRight_toLeftOf="@+id/right2"
app:srcCompat="@color/colorPrimaryDark" />
<ImageButton
android:id="@+id/right2"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:padding="0dp"
app:layout_constraintDimensionRatio="1:1"
app:layout_constraintHorizontal_weight="0.5"
app:layout_constraintTop_toBottomOf="@+id/right1"
app:layout_constraintBottom_toTopOf="@+id/right3"
app:layout_constraintLeft_toRightOf="@+id/left2"
app:layout_constraintRight_toLeftOf="@+id/right_main_guideline"
app:srcCompat="@android:color/holo_red_light" />
<ImageButton
android:id="@+id/left3"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:padding="0dp"
app:layout_constraintDimensionRatio="1:1"
app:layout_constraintHorizontal_weight="0.5"
app:layout_constraintTop_toBottomOf="@+id/left2"
app:layout_constraintBottom_toTopOf="@+id/left4"
app:layout_constraintLeft_toRightOf="@+id/left_main_guideline"
app:layout_constraintRight_toLeftOf="@+id/right3"
app:srcCompat="@android:color/holo_green_light" />
<ImageButton
android:id="@+id/right3"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:padding="0dp"
app:layout_constraintDimensionRatio="1:1"
app:layout_constraintHorizontal_weight="0.5"
app:layout_constraintTop_toBottomOf="@+id/right2"
app:layout_constraintBottom_toTopOf="@+id/right4"
app:layout_constraintLeft_toRightOf="@+id/left3"
app:layout_constraintRight_toLeftOf="@+id/right_main_guideline"
app:srcCompat="@android:color/holo_blue_bright" />
<ImageButton
android:id="@+id/left4"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:padding="0dp"
app:layout_constraintDimensionRatio="1:1"
app:layout_constraintHorizontal_weight="0.5"
app:layout_constraintBottom_toTopOf="@+id/button"
app:layout_constraintLeft_toRightOf="@+id/left_main_guideline"
app:layout_constraintRight_toLeftOf="@+id/right4"
app:layout_constraintTop_toBottomOf="@+id/left3"
app:srcCompat="@android:color/holo_blue_dark" />
<ImageButton
android:id="@+id/right4"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:padding="0dp"
app:layout_constraintDimensionRatio="1:1"
app:layout_constraintHorizontal_weight="0.5"
app:layout_constraintBottom_toTopOf="@+id/button"
app:layout_constraintLeft_toRightOf="@+id/left4"
app:layout_constraintRight_toLeftOf="@+id/right_main_guideline"
app:layout_constraintTop_toBottomOf="@+id/right3"
app:srcCompat="?attr/colorControlHighlight" />
<Button
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:text="See your O2 Home Story"
android:id="@+id/button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toBottomOf="@+id/rightBottomButton" />
<android.support.constraint.Guideline
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/left_main_guideline"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.0"
tools:layout_editor_absoluteY="0dp"
tools:layout_editor_absoluteX="0dp" />
<android.support.constraint.Guideline
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/right_main_guideline"
android:orientation="vertical"
app:layout_constraintGuide_percent="1.0"
tools:layout_editor_absoluteY="0dp"
tools:layout_editor_absoluteX="360dp" />
</android.support.constraint.ConstraintLayout>
</ScrollView>
</android.support.constraint.ConstraintLayout>
更改图像按钮 right2、right3 和 right4，将其顶部分别限制为 left2、left3 和 left4。像这样的 right2:
app:layout_constraintTop_toTopOf="@id/left2"
另外，从 left1 中删除以下行。我认为这只是一个错误。
app:layout_constraintBottom_toTopOf="@+id/left2"
这会给你一个看起来像 this demo.
的显示我不知道为什么会这样。如果其他 reader 知道，我当然想听听答案。这是 XML:
已更改 XML
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.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:id="@+id/activity_form"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/colorAccent">
<ScrollView
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="0dp"
android:layout_marginLeft="24dp"
android:layout_marginRight="24dp"
android:layout_marginTop="0dp"
android:background="@color/colorPrimary"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_constraintVertical_bias="0.0">
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="@+id/title1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:text="Your story starts here"
android:textColor="#ffffff"
android:textSize="20sp"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toRightOf="@+id/left_main_guideline"
app:layout_constraintRight_toLeftOf="@+id/right_main_guideline"
app:layout_constraintTop_toTopOf="parent" />
<EditText
android:id="@+id/editText"
android:layout_width="300px"
android:layout_height="wrap_content"
android:layout_marginLeft="0dp"
android:layout_marginTop="16dp"
android:background="@android:color/background_light"
android:inputType="textPersonName"
android:padding="5dp"
android:text="Name"
app:layout_constraintHorizontal_bias="0.0"
app:layout_constraintLeft_toRightOf="@+id/left_main_guideline"
app:layout_constraintRight_toLeftOf="@+id/right_main_guideline"
app:layout_constraintTop_toBottomOf="@+id/title1" />
<TextView
android:id="@+id/title2"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginTop="16dp"
android:text="Choose what matters to you"
android:textColor="#ffffff"
android:textSize="20sp"
app:layout_constraintLeft_toRightOf="@+id/left_main_guideline"
app:layout_constraintRight_toLeftOf="@+id/right_main_guideline"
app:layout_constraintTop_toBottomOf="@+id/editText" />
<ImageButton
android:id="@+id/left1"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:padding="0dp"
app:layout_constraintDimensionRatio="1:1"
app:layout_constraintHorizontal_weight="0.5"
app:layout_constraintLeft_toRightOf="@+id/left_main_guideline"
app:layout_constraintRight_toLeftOf="@+id/right1"
app:layout_constraintTop_toBottomOf="@+id/title2"
app:srcCompat="@color/colorAccent" />
<ImageButton
android:id="@+id/right1"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:padding="0dp"
app:layout_constraintBottom_toTopOf="@+id/right2"
app:layout_constraintDimensionRatio="1:1"
app:layout_constraintHorizontal_weight="0.5"
app:layout_constraintLeft_toRightOf="@+id/left1"
app:layout_constraintRight_toLeftOf="@+id/right_main_guideline"
app:layout_constraintTop_toBottomOf="@+id/title2"
app:srcCompat="@android:color/holo_orange_dark" />
<ImageButton
android:id="@+id/left2"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:padding="0dp"
app:layout_constraintBottom_toTopOf="@+id/left3"
app:layout_constraintDimensionRatio="1:1"
app:layout_constraintHorizontal_weight="0.5"
app:layout_constraintLeft_toRightOf="@+id/left_main_guideline"
app:layout_constraintRight_toLeftOf="@+id/right2"
app:layout_constraintTop_toBottomOf="@id/left1"
app:srcCompat="@color/colorPrimaryDark" />
<ImageButton
android:id="@+id/right2"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:padding="0dp"
app:layout_constraintBottom_toTopOf="@+id/right3"
app:layout_constraintDimensionRatio="1:1"
app:layout_constraintHorizontal_weight="0.5"
app:layout_constraintLeft_toRightOf="@+id/left2"
app:layout_constraintRight_toLeftOf="@+id/right_main_guideline"
app:layout_constraintTop_toTopOf="@id/left2"
app:srcCompat="@android:color/holo_red_light" />
<ImageButton
android:id="@+id/left3"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:padding="0dp"
app:layout_constraintBottom_toTopOf="@+id/left4"
app:layout_constraintDimensionRatio="1:1"
app:layout_constraintHorizontal_weight="0.5"
app:layout_constraintLeft_toRightOf="@+id/left_main_guideline"
app:layout_constraintRight_toLeftOf="@+id/right3"
app:layout_constraintTop_toBottomOf="@id/left2"
app:srcCompat="@android:color/holo_green_light" />
<ImageButton
android:id="@+id/right3"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:padding="0dp"
app:layout_constraintBottom_toTopOf="@+id/right4"
app:layout_constraintDimensionRatio="1:1"
app:layout_constraintHorizontal_weight="0.5"
app:layout_constraintLeft_toRightOf="@+id/left3"
app:layout_constraintRight_toLeftOf="@+id/right_main_guideline"
app:layout_constraintTop_toTopOf="@id/left3"
app:srcCompat="@android:color/holo_blue_bright" />
<ImageButton
android:id="@+id/left4"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:padding="0dp"
app:layout_constraintBottom_toTopOf="@+id/button"
app:layout_constraintDimensionRatio="1:1"
app:layout_constraintHorizontal_weight="0.5"
app:layout_constraintLeft_toRightOf="@+id/left_main_guideline"
app:layout_constraintRight_toLeftOf="@+id/right4"
app:layout_constraintTop_toBottomOf="@id/left3"
app:srcCompat="@android:color/holo_blue_dark" />
<ImageButton
android:id="@+id/right4"
style="?android:attr/borderlessButtonStyle"
android:layout_width="0dp"
android:layout_height="0dp"
android:padding="0dp"
app:layout_constraintBottom_toTopOf="@+id/button"
app:layout_constraintDimensionRatio="1:1"
app:layout_constraintHorizontal_weight="0.5"
app:layout_constraintLeft_toRightOf="@+id/left4"
app:layout_constraintRight_toLeftOf="@+id/right_main_guideline"
app:layout_constraintTop_toTopOf="@id/left4"
app:srcCompat="?attr/colorControlHighlight" />
<Button
android:id="@+id/button"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:text="See your O2 Home Story"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent" />
<android.support.constraint.Guideline
android:id="@+id/left_main_guideline"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.0"
tools:layout_editor_absoluteX="0dp"
tools:layout_editor_absoluteY="0dp" />
<android.support.constraint.Guideline
android:id="@+id/right_main_guideline"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="1.0"
tools:layout_editor_absoluteX="360dp"
tools:layout_editor_absoluteY="0dp" />
</android.support.constraint.ConstraintLayout>
</ScrollView>
</android.support.constraint.ConstraintLayout>