如何將9X等大小的按鈕放在約束佈局中的ImageView上？

Question

我有一個約束佈局內的ImageView如下

<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:orientation="vertical" 
android:layout_width="match_parent" 
android:layout_height="match_parent"> 

<ImageView 
    android:id="@+id/imageView" 
    android:layout_width="0dp" 
    android:layout_height="wrap_content" 
    android:layout_marginBottom="8dp" 
    android:layout_marginTop="8dp" 
    android:adjustViewBounds="true" 
    android:cropToPadding="false" 
    android:scaleType="fitXY" 
    app:layout_constraintBottom_toBottomOf="parent" 
    app:layout_constraintLeft_toLeftOf="parent" 
    app:layout_constraintRight_toRightOf="parent" 
    app:layout_constraintTop_toTopOf="parent" 
    app:srcCompat="@drawable/argentina" 
    android:layout_marginLeft="16dp" 
    app:layout_constraintHorizontal_bias="0.0" 
    app:layout_constraintVertical_bias="0.501" 
    android:layout_marginRight="16dp" 
    android:layout_marginStart="16dp" 
    android:layout_marginEnd="16dp" /> 

，我想蓋上9X同樣大小的按鈕，這個圖片如下所示

公告稱，ImageView的變化與約束佈局的大小

Answer 1

是的你可以實現那個使用約束cha在和match_constraint（0dp）財產 你要在這裏定義垂直和水平鏈到下面的所有按鈕是相同

<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:layout_width="match_parent" 
    android:layout_height="match_parent" 
    tools:layout_editor_absoluteY="81dp" 
    tools:layout_editor_absoluteX="0dp"> 



     <ImageView 
      android:id="@+id/imageView" 
      android:layout_width="0dp" 
      android:layout_height="wrap_content" 
      android:layout_marginBottom="8dp" 
      android:layout_marginTop="8dp" 
      android:adjustViewBounds="true" 
      android:cropToPadding="false" 
      android:scaleType="fitXY" 
      app:layout_constraintBottom_toBottomOf="parent" 
      app:layout_constraintLeft_toLeftOf="parent" 
      app:layout_constraintRight_toRightOf="parent" 
      app:layout_constraintTop_toTopOf="parent" 
      app:srcCompat="@drawable/firefox" 
      android:layout_marginLeft="16dp" 
      app:layout_constraintHorizontal_bias="0.0" 
      app:layout_constraintVertical_bias="0.501" 
      android:layout_marginRight="16dp" 
      android:layout_marginStart="16dp" 
      android:layout_marginEnd="16dp" /> 
     <Button 
      android:id="@+id/button1" 
      android:layout_width="0dp" 
      android:layout_height="0dp" 
      android:text="Button" 
      app:layout_constraintEnd_toEndOf="@+id/imageView" 
      app:layout_constraintTop_toTopOf="@+id/imageView" 
      app:layout_constraintStart_toEndOf="@+id/button5" 
      app:layout_constraintBottom_toTopOf="@id/button41" 
      app:layout_constraintVertical_chainStyle="spread_inside"/> 


     <Button 
      android:id="@+id/button31" 
      android:layout_width="0dp" 
      android:layout_height="0dp" 
      android:text="Button" 
      app:layout_constraintStart_toStartOf="@+id/imageView" 
      app:layout_constraintTop_toTopOf="@+id/imageView" 
      app:layout_constraintBottom_toTopOf="@id/button311" 
      app:layout_constraintHorizontal_chainStyle="spread_inside" 
      app:layout_constraintEnd_toStartOf="@+id/button51" 
      app:layout_constraintVertical_chainStyle="spread_inside" /> 

     <Button 
      android:id="@+id/button5" 
      android:layout_width="0dp" 
      android:layout_height="0dp" 
      android:text="Button" 
      app:layout_constraintTop_toTopOf="@+id/imageView" 
      app:layout_constraintEnd_toStartOf="@+id/button11" 
      app:layout_constraintStart_toEndOf="@+id/button13" 
      app:layout_constraintBottom_toTopOf="@+id/button133" 
      app:layout_constraintVertical_chainStyle="spread_inside" /> 




     <Button 
      android:id="@+id/button311" 
      android:layout_width="0dp" 
      android:layout_height="0dp" 
      android:text="Button" 
      app:layout_constraintStart_toStartOf="@+id/imageView" 
      app:layout_constraintTop_toBottomOf="@+id/button31" 
      app:layout_constraintBottom_toTopOf="@+id/button13" 
      app:layout_constraintEnd_toStartOf="@+id/button133" 
      app:layout_constraintHorizontal_chainStyle="spread_inside" /> 

     <Button 
      android:id="@+id/button133" 
      android:layout_width="0dp" 
      android:layout_height="0dp" 
      android:text="Button" 
      app:layout_constraintStart_toEndOf="@+id/button311" 
      app:layout_constraintEnd_toStartOf="@+id/button41" 
      app:layout_constraintTop_toBottomOf="@+id/button5" 
      app:layout_constraintBottom_toTopOf="@+id/button51" /> 
     <Button 
      android:id="@+id/button41" 
      android:layout_width="0dp" 
      android:layout_height="0dp" 
      app:layout_constraintEnd_toEndOf="@+id/imageView" 
      android:text="Button" 
      app:layout_constraintTop_toBottomOf="@+id/button1" 
      app:layout_constraintBottom_toTopOf="@+id/button11" 
      app:layout_constraintStart_toEndOf="@+id/button133" /> 

     <Button 
      android:id="@+id/button11" 
      android:layout_width="0dp" 
      android:layout_height="0dp" 
      android:text="Button" 
      app:layout_constraintEnd_toEndOf="@+id/imageView" 
      app:layout_constraintBottom_toBottomOf="@+id/imageView" 
      app:layout_constraintStart_toEndOf="@+id/button51" 
      app:layout_constraintTop_toBottomOf="@id/button41" 
      /> 


     <Button 
      android:id="@+id/button13" 
      android:layout_width="0dp" 
      android:layout_height="0dp" 
      android:text="Button" 
      app:layout_constraintStart_toStartOf="@+id/imageView" 
      app:layout_constraintBottom_toBottomOf="@+id/imageView" 
      app:layout_constraintTop_toBottomOf="@id/button311" 
      app:layout_constraintHorizontal_chainStyle="spread_inside" 
      app:layout_constraintEnd_toStartOf="@+id/button51" /> 

     <Button 
      android:id="@+id/button51" 
      android:layout_width="0dp" 
      android:layout_height="0dp" 
      android:text="Button" 
      app:layout_constraintBottom_toBottomOf="@+id/imageView" 
      app:layout_constraintEnd_toStartOf="@+id/button11" 
      app:layout_constraintStart_toEndOf="@+id/button13" 
      app:layout_constraintTop_toBottomOf="@id/button133"/> 
</android.support.constraint.ConstraintLayout> 

這裏的樣本是設計 and 藍色印花

，你可以在這裏得到有關鏈和約束所有的細節 https://developer.android.com/reference/android/support/constraint/ConstraintLayout.html#Chains

這將在所有設備大小和方向的工作

注：我建議吳太添加一些了minHeight到圖像視圖，以便避免隱藏按鈕，但我不知道你的要求，但它是一個引人注目的點