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  • ConstraintLayout中的chainstyle & guideline >

    ConstraintLayout中的chainstyle & guideline

    有时候容易忘记,摘抄记录一下。

    参考博客:https://blog.csdn.net/cui130/article/details/89849807

    1、chainstyle(链式)

    **属性 **有水平和垂直之分:

    • layout_constraintHorizontal_chainStyle 水平方向
    • layout_constraintVertical_chainStyle 垂直方向

    属性值 有三种:

    • spread (默认) 如下:

      • 默认模式如下:

      • 使用weight方式如下:(layout_width=0dp)

        添加属性layout_constraintHorizontal_weight ,同理也有垂直方向的,可以自己尝试

    • spread_inside

    • packed

      • 捆绑在一起居中显示

      • 偏移显示

        添加属性layout_constraintHorizontal_bias

    2、guideline(辅助线)

    属性 辅助线也有垂直和水平之分,使用属性 orientation 来确定方向

    • horizontal 辅助线为水平方向
    • vertical 辅助线为垂直方向

    确定辅助线的位置有三种属性:

    • layout_constraintGuide_begin 水平方向为距离左边的距离;垂直方向为距离上边的距离

      app:layout_constraintGuide_begin="100dp"
      
    • layout_constraintGuide_end 水平方向为距离右边的距离;垂直方向为距离下边的距离

      app:layout_constraintGuide_percent="0.6"
      
    • layout_constraintGuide_percent 水平方向为从左向右占比;垂直方向为距离从上到下占比

      app:layout_constraintGuide_end="50dp"
      

    上面举例如下:(垂直方向,水平方向同理)

    3、代码如下:

    <TextView    
              android:id="@+id/weightStart"    
              android:layout_width="0dp"    
              android:layout_height="30dp"    
              android:text="weightStart"    
              android:textColor="#ffffff"    
              android:background="#83BB96"    
              android:gravity="center"    
              android:layout_marginTop="10dp"    
              app:layout_constraintHorizontal_chainStyle="spread"   
              app:layout_constraintHorizontal_weight="1"    
              app:layout_constraintStart_toStartOf="parent"    
              app:layout_constraintEnd_toStartOf="@id/weightCenter"    
              app:layout_constraintTop_toTopOf="parent"/>
    
    <TextView    
              android:id="@+id/weightCenter"    
              android:layout_width="0dp"    
              android:layout_height="30dp"    
              android:text="weightCenter"    
              android:textColor="#ffffff"    
              android:background="#567B63"    
              android:gravity="center"    
              app:layout_constraintHorizontal_weight="2"   
              app:layout_constraintTop_toTopOf="@+id/weightStart"    
              app:layout_constraintStart_toEndOf="@+id/weightStart"    
              app:layout_constraintEnd_toStartOf="@+id/weightEnd"/>
    
    <TextView    
              android:id="@+id/weightEnd"    
              android:layout_width="0dp"    
              android:layout_height="30dp"    
              android:text="weightEnd"    
              android:textColor="#ffffff"    
              android:background="#669999"    
              android:gravity="center"   
              app:layout_constraintHorizontal_weight="3"   
    		  app:layout_constraintTop_toTopOf="@+id/weightStart"    
    		  app:layout_constraintStart_toEndOf="@id/weightCenter"    
              app:layout_constraintEnd_toEndOf="parent"/>
    
    <TextView    
              android:id="@+id/insideStart"    
              android:layout_width="wrap_content"    
              android:layout_height="30dp"    
              android:text="insideStart"    
              android:textColor="#ffffff"    
              android:background="#83BB96"    
              android:gravity="center"    
              android:layout_marginTop="10dp"    
              app:layout_constraintHorizontal_chainStyle="spread_inside"   
              app:layout_constraintStart_toStartOf="parent"   
              app:layout_constraintEnd_toStartOf="@id/insideCenter"   
              app:layout_constraintTop_toBottomOf="@+id/weightStart"/>
    
    <TextView    
              android:id="@+id/insideCenter"    
              android:layout_width="wrap_content"    
              android:layout_height="30dp"    
              android:text="insideCenter"   
              android:textColor="#ffffff"    
              android:background="#567B63"   
              android:gravity="center"   
              app:layout_constraintTop_toTopOf="@+id/insideStart"   
              app:layout_constraintStart_toEndOf="@+id/insideStart"   
              app:layout_constraintEnd_toStartOf="@+id/insideEnd"/>
    
    <TextView    
              android:id="@+id/insideEnd"   
              android:layout_width="wrap_content"    
              android:layout_height="30dp"   
              android:text="insideEnd"   
              android:textColor="#ffffff"   
              android:background="#669999" 
              android:gravity="center"   
              app:layout_constraintTop_toTopOf="@+id/insideStart"   
              app:layout_constraintStart_toEndOf="@id/insideCenter"   
              app:layout_constraintEnd_toEndOf="parent"/>
    
    <TextView   
              android:id="@+id/PackedStart"    
              android:layout_width="wrap_content"   
              android:layout_height="30dp"   
              android:text="PackedStart"  
              android:textColor="#ffffff"   
              android:background="#83BB96"  
              android:gravity="center"  
              android:layout_marginTop="10dp"   
              app:layout_constraintHorizontal_chainStyle="packed"   
              app:layout_constraintStart_toStartOf="parent"   
              app:layout_constraintEnd_toStartOf="@id/PackedCenter"   
              app:layout_constraintTop_toBottomOf="@+id/insideStart"/>
    
    <TextView   
              android:id="@+id/PackedCenter"    
              android:layout_width="wrap_content"    
              android:layout_height="30dp"   
              android:text="PackedCenter" 
              android:textColor="#ffffff"   
              android:background="#567B63"   
              android:gravity="center"   
              app:layout_constraintTop_toTopOf="@+id/PackedStart"   
              app:layout_constraintStart_toEndOf="@+id/PackedStart"   
              app:layout_constraintEnd_toStartOf="@+id/PackedEnd"/>
    
    <TextView   
              android:id="@+id/PackedEnd"    
              android:layout_width="wrap_content"  
              android:layout_height="30dp"   
              android:text="PackedEnd"    
              android:textColor="#ffffff"  
              android:background="#669999"  
              android:gravity="center"    
              app:layout_constraintTop_toTopOf="@+id/PackedStart"   
              app:layout_constraintEnd_toEndOf="parent"    
              app:layout_constraintStart_toEndOf="@+id/PackedCenter"/>
    
    <TextView    
              android:id="@+id/PackBiasStart"   
              android:layout_width="wrap_content"  
              android:layout_height="30dp"   
              android:layout_marginTop="8dp"  
              android:background="#83BB96" 
              android:gravity="center" 
              android:text="PackBiasStart"   
              android:textColor="#ffffff"    
              app:layout_constraintHorizontal_chainStyle="packed"   
              app:layout_constraintHorizontal_bias="0.2"    
              app:layout_constraintStart_toStartOf="parent"   
              app:layout_constraintEnd_toStartOf="@id/PackBiasCenter"   
              app:layout_constraintTop_toBottomOf="@+id/PackedStart" />
    
    <TextView   
              android:id="@+id/PackBiasCenter"    
              android:layout_width="wrap_content"  
              android:layout_height="30dp"   
              android:text="PackBiasCenter"  
              android:textColor="#ffffff"   
              android:background="#567B63"  
              android:gravity="center"   
              app:layout_constraintTop_toTopOf="@+id/PackBiasStart"    
              app:layout_constraintStart_toEndOf="@+id/PackBiasStart"    
              app:layout_constraintEnd_toStartOf="@+id/PackBiasEnd"/>
    
    <TextView    
              android:id="@+id/PackBiasEnd"    
              android:layout_width="wrap_content"   
              android:layout_height="30dp"   
              android:text="PackBiasEnd"   
              android:textColor="#ffffff"  
              android:background="#669999" 
              android:gravity="center"   
              app:layout_constraintTop_toTopOf="@+id/PackBiasStart"   
              app:layout_constraintStart_toEndOf="@id/PackBiasCenter"   
              app:layout_constraintEnd_toEndOf="parent"/>
    
    <TextView   
              android:id="@+id/SpredStart"   
              android:layout_width="wrap_content"  
              android:layout_height="30dp"   
              android:text="SpredStart"  
              android:textColor="#ffffff" 
              android:background="#83BB96"   
              android:gravity="center" 
              android:layout_marginTop="10dp"    
              app:layout_constraintHorizontal_chainStyle="spread"   
              app:layout_constraintStart_toStartOf="parent"   
              app:layout_constraintEnd_toStartOf="@id/SpredCenter"    
              app:layout_constraintTop_toBottomOf="@+id/PackBiasStart"/>
    
    <TextView   
              android:id="@+id/SpredCenter"    
              android:layout_width="wrap_content"  
              android:layout_height="30dp"   
              android:text="SpredCenter"  
              android:textColor="#ffffff"   
              android:background="#567B63"  
              android:gravity="center"    
              app:layout_constraintTop_toTopOf="@+id/SpredStart"    
              app:layout_constraintStart_toEndOf="@+id/SpredStart"    
              app:layout_constraintEnd_toStartOf="@+id/SpredEnd"/>
    
    <TextView 
              android:id="@+id/SpredEnd"   
              android:layout_width="wrap_content"   
              android:layout_height="30dp"  
              android:text="SpredEnd"  
              android:textColor="#ffffff"   
              android:background="#669999" 
              android:gravity="center"   
              app:layout_constraintTop_toTopOf="@+id/SpredStart"   
              app:layout_constraintStart_toEndOf="@id/SpredCenter"   
              app:layout_constraintEnd_toEndOf="parent"/>
    
    <androidx.constraintlayout.widget.Guideline
               android:id="@+id/guideline1"
    	   android:layout_width="wrap_content"
    	   android:layout_height="wrap_content"
               android:orientation="vertical"
    	   app:layout_constraintGuide_begin="100dp"/>
    
    <TextView   
              android:id="@+id/guide1"   
              android:layout_width="wrap_content"    
              android:layout_height="30dp"   
              android:text="SpredEnd"   
              android:textColor="#ffffff" 
              android:background="#669999"  
              android:gravity="center"    
              app:layout_constraintEnd_toStartOf="@+id/guideline1"   
              app:layout_constraintBottom_toBottomOf="parent"/>
    
    <androidx.constraintlayout.widget.Guideline 
    		android:id="@+id/guideline2"                                       		   
                    android:layout_width="wrap_content"    
                    android:layout_height="wrap_content"   
     		android:orientation="vertical"  
    		app:layout_constraintGuide_end="50dp"/>
    
    <TextView    
              android:id="@+id/guide2"    
              android:layout_width="wrap_content"    
              android:layout_height="30dp"    
              android:text="SpredEnd"  
              android:textColor="#ffffff" 
              android:background="#669999"   
              android:gravity="center"    
              app:layout_constraintEnd_toStartOf="@+id/guideline2"    
              app:layout_constraintBottom_toBottomOf="parent"/>
    
    <androidx.constraintlayout.widget.Guideline
    		android:id="@+id/guideline3"    
    		android:layout_width="wrap_content"     
    		android:layout_height="wrap_content"    
    		android:orientation="vertical"   
    		app:layout_constraintGuide_percent="0.6"/>
    
    <TextView    
              android:id="@+id/guide3"    
              android:layout_width="wrap_content"   
              android:layout_height="30dp"    
              android:text="SpredEnd"    
              android:textColor="#ffffff"   
              android:background="#669999" 
              android:gravity="center"     
              app:layout_constraintEnd_toStartOf="@+id/guideline3"    
              app:layout_constraintBottom_toBottomOf="parent"/>
    
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  • 原文地址:https://www.cnblogs.com/wisdomzhang/p/12309267.html
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