[英]How many views can be chained(add relationship) inside ConstraintLayout
Android中的約束布局支持視圖鏈( https://developer.android.com/reference/android/support/constraint/ConstraintLayout#chain-style )
我檢查了幾個例子,到處都只展示了3個視圖來展示這個概念。
3是限制嗎?
用3個元素鏈接
鏈接有4個元素
代碼 - https://gist.github.com/vamsigp/784be59f8ae1e2137ece1349c726d1f8
您的布局出錯:
app:layout_constraintRight_toRightOf="share2"
應該:
app:layout_constraintRight_toLeftOf="@+id/share2"
3不是限制,您可以將4個或更多視圖鏈接在一起。
以下是4視圖鏈的示例:
<?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:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:id="@+id/button9"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toStartOf="@+id/button10"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toEndOf="@+id/button12"
app:layout_constraintTop_toTopOf="parent" />
<Button
android:id="@+id/button10"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button"
app:layout_constraintBottom_toBottomOf="@+id/button9"
app:layout_constraintEnd_toStartOf="@+id/button11"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toEndOf="@+id/button9"
app:layout_constraintTop_toTopOf="@+id/button9" />
<Button
android:id="@+id/button11"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button"
app:layout_constraintBottom_toBottomOf="@+id/button9"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toEndOf="@+id/button10"
app:layout_constraintTop_toTopOf="@+id/button9" />
<Button
android:id="@+id/button12"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Button"
app:layout_constraintBottom_toBottomOf="@+id/button9"
app:layout_constraintEnd_toStartOf="@+id/button9"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="@+id/button9" />
</android.support.constraint.ConstraintLayout>
它工作正常:
因此鏈非常靈活,例如,9視圖鏈:
<?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:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:id="@+id/button9"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toStartOf="@+id/button13"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<Button
android:id="@+id/button13"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:text="Button"
app:layout_constraintBottom_toBottomOf="@+id/button9"
app:layout_constraintEnd_toStartOf="@+id/button14"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toEndOf="@+id/button9"
app:layout_constraintTop_toTopOf="@+id/button9" />
<Button
android:id="@+id/button14"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:text="Button"
app:layout_constraintBottom_toBottomOf="@+id/button9"
app:layout_constraintEnd_toStartOf="@+id/button15"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toEndOf="@+id/button13"
app:layout_constraintTop_toTopOf="@+id/button9" />
<Button
android:id="@+id/button15"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:text="Button"
app:layout_constraintBottom_toBottomOf="@+id/button9"
app:layout_constraintEnd_toStartOf="@+id/button16"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toEndOf="@+id/button14"
app:layout_constraintTop_toTopOf="@+id/button9" />
<Button
android:id="@+id/button16"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:text="Button"
app:layout_constraintBottom_toBottomOf="@+id/button9"
app:layout_constraintEnd_toStartOf="@+id/button17"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toEndOf="@+id/button15"
app:layout_constraintTop_toTopOf="@+id/button9" />
<Button
android:id="@+id/button17"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:text="Button"
app:layout_constraintBottom_toBottomOf="@+id/button9"
app:layout_constraintEnd_toStartOf="@+id/button18"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toEndOf="@+id/button16"
app:layout_constraintTop_toTopOf="@+id/button9" />
<Button
android:id="@+id/button18"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:text="Button"
app:layout_constraintBottom_toBottomOf="@+id/button9"
app:layout_constraintEnd_toStartOf="@+id/button19"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toEndOf="@+id/button17"
app:layout_constraintTop_toTopOf="@+id/button9" />
<Button
android:id="@+id/button19"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:text="Button"
app:layout_constraintBottom_toBottomOf="@+id/button9"
app:layout_constraintEnd_toStartOf="@+id/button20"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toEndOf="@+id/button18"
app:layout_constraintTop_toTopOf="@+id/button9" />
<Button
android:id="@+id/button20"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:text="Button"
app:layout_constraintBottom_toBottomOf="@+id/button9"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintHorizontal_bias="0.5"
app:layout_constraintStart_toEndOf="@+id/button19"
app:layout_constraintTop_toTopOf="@+id/button9" />
</android.support.constraint.ConstraintLayout>
就像之前一樣好看:
你可以玩這個甚至到你有這么多的視圖,它只是看起來像條紋(我不會分享這個的XML,因為,你明白了):
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