ConstraintLayout中的chainstyle & guideline >
ConstraintLayout中的chainstyle & guideline
有时候容易忘记,摘抄记录一下。
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"/>