Android 约束中间的弹出按钮,大小为ViewPager的1/3
我正在使用ConstraintLayout,我想在ViewPager的中心显示按钮,但宽度和高度为该页面的1/3。我使用了水平和垂直链。接下来是:Android 约束中间的弹出按钮,大小为ViewPager的1/3,android,button,android-constraintlayout,Android,Button,Android Constraintlayout,我正在使用ConstraintLayout,我想在ViewPager的中心显示按钮,但宽度和高度为该页面的1/3。我使用了水平和垂直链。接下来是: <android.support.v4.view.ViewPager android:id="@+id/view_pager" android:layout_width="0dp" android:layout_height="0dp" android:layout_marginBottom="96dp"
<android.support.v4.view.ViewPager
android:id="@+id/view_pager"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="96dp"
android:layout_marginLeft="32dp"
android:layout_marginRight="32dp"
android:layout_marginTop="96dp"
app:layout_constraintBottom_toTopOf="@+id/send_button"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<Button
android:id="@+id/button1"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:text="Button"
app:layout_constraintHorizontal_weight="1"
app:layout_constraintLeft_toLeftOf="@id/view_pager"
app:layout_constraintRight_toLeftOf="@+id/button2" />
<Button
android:id="@+id/button5"
android:layout_width="wrap_content"
android:layout_height="0dp"
app:layout_constraintVertical_weight="1"
app:layout_constraintBottom_toBottomOf="@id/view_pager"
app:layout_constraintTop_toBottomOf="@id/button2"/>
<Button
android:id="@+id/button4"
android:layout_width="wrap_content"
android:layout_height="0dp"
app:layout_constraintVertical_weight="1"
app:layout_constraintTop_toTopOf="@id/view_pager"
app:layout_constraintBottom_toTopOf="@id/button2"/>
<Button
android:id="@+id/button2"
android:layout_width="0dp"
android:layout_height="0dp"
android:text="Button"
app:layout_constraintVertical_weight="1"
app:layout_constraintHorizontal_weight="1"
app:layout_constraintTop_toBottomOf="@id/button4"
app:layout_constraintBottom_toTopOf="@id/button5"
app:layout_constraintLeft_toRightOf="@+id/button1"
app:layout_constraintRight_toLeftOf="@+id/button3" />
<Button
android:id="@+id/button3"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:text="Button"
app:layout_constraintHorizontal_weight="1"
app:layout_constraintLeft_toRightOf="@+id/button2"
app:layout_constraintRight_toRightOf="@id/view_pager" />
<android.support.constraint.Guideline
android:id="@+id/vertical_guideline"
android:layout_width="0dp"
android:layout_height="0dp"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.5" />
<Button
android:id="@+id/send_button"
android:layout_width="0dp"
android:layout_height="56dp"
android:layout_marginBottom="@dimen/basic_keyline"
android:layout_marginEnd="@dimen/basic_keyline"
android:layout_marginLeft="8dp"
android:layout_marginRight="@dimen/basic_keyline"
android:layout_marginStart="8dp"
android:background="@color/colorAccent"
android:text="@string/send"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toRightOf="@+id/vertical_guideline"
app:layout_constraintRight_toRightOf="parent" />
添加按钮是为了便于理解我想要什么。您可以在页面查看器
中插入约束列表
,以便使用指南
约束按钮
<android.support.v4.view.ViewPager
android:id="@+id/view_pager"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="96dp"
android:layout_marginLeft="32dp"
android:layout_marginRight="32dp"
android:layout_marginTop="96dp"
app:layout_constraintBottom_toTopOf="@+id/send_button"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
>
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<android.support.constraint.Guideline
android:id="@+id/left_guideline"
android:layout_width="0dp"
android:layout_height="0dp"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.33" />
<android.support.constraint.Guideline
android:id="@+id/right_guideline"
android:layout_width="0dp"
android:layout_height="0dp"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.67" />
<android.support.constraint.Guideline
android:id="@+id/top_guideline"
android:layout_width="0dp"
android:layout_height="0dp"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.33" />
<android.support.constraint.Guideline
android:id="@+id/bottom_guideline"
android:layout_width="0dp"
android:layout_height="0dp"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.67" />
<Button
android:id="@+id/button2"
android:layout_width="0dp"
android:layout_height="0dp"
android:text="Button"
app:layout_constraintTop_toBottomOf="@id/top_guideline"
app:layout_constraintBottom_toTopOf="@id/bottom_guideline"
app:layout_constraintLeft_toRightOf="@+id/left_guideline"
app:layout_constraintRight_toLeftOf="@+id/right_guideline" />
</android.support.constraint.ConstraintLayout>
您可以在页面查看器
中插入ConstraintLayout
,以便使用指南
约束按钮
<android.support.v4.view.ViewPager
android:id="@+id/view_pager"
android:layout_width="0dp"
android:layout_height="0dp"
android:layout_marginBottom="96dp"
android:layout_marginLeft="32dp"
android:layout_marginRight="32dp"
android:layout_marginTop="96dp"
app:layout_constraintBottom_toTopOf="@+id/send_button"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
>
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<android.support.constraint.Guideline
android:id="@+id/left_guideline"
android:layout_width="0dp"
android:layout_height="0dp"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.33" />
<android.support.constraint.Guideline
android:id="@+id/right_guideline"
android:layout_width="0dp"
android:layout_height="0dp"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.67" />
<android.support.constraint.Guideline
android:id="@+id/top_guideline"
android:layout_width="0dp"
android:layout_height="0dp"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.33" />
<android.support.constraint.Guideline
android:id="@+id/bottom_guideline"
android:layout_width="0dp"
android:layout_height="0dp"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.67" />
<Button
android:id="@+id/button2"
android:layout_width="0dp"
android:layout_height="0dp"
android:text="Button"
app:layout_constraintTop_toBottomOf="@id/top_guideline"
app:layout_constraintBottom_toTopOf="@id/bottom_guideline"
app:layout_constraintLeft_toRightOf="@+id/left_guideline"
app:layout_constraintRight_toLeftOf="@+id/right_guideline" />
</android.support.constraint.ConstraintLayout>
以下是无需添加这么多按钮和指南即可完成的操作
代码如下:
<?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"
android:fitsSystemWindows="true"
android:orientation="vertical"
android:id="@+id/apbLay1"
tools:context="studios.brilliant.com.commutech.Home">
<android.support.constraint.ConstraintLayout
android:layout_marginBottom="152dp"
android:layout_marginLeft="32dp"
android:layout_marginRight="32dp"
android:layout_marginTop="96dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
android:layout_height="0dp"
android:layout_width="0dp"
>
<android.support.v4.view.ViewPager
android:id="@+id/view_pager"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
/>
<Button
android:id="@+id/button2"
android:layout_width="0dp"
app:layout_constraintHeight_default="percent"
app:layout_constraintHeight_percent=".333"
app:layout_constraintWidth_default="percent"
app:layout_constraintWidth_percent=".333"
android:layout_height="0dp"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
/>
</android.support.constraint.ConstraintLayout>
</android.support.constraint.ConstraintLayout>
.333是父母的33.3%,几乎等于三分之一。
额外的布局是为viewpager和button添加一个容器,因为使用viewpager作为容器可能会导致在片段可见时隐藏按钮。以下是无需添加这么多按钮和指导原则的方法
代码如下:
<?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"
android:fitsSystemWindows="true"
android:orientation="vertical"
android:id="@+id/apbLay1"
tools:context="studios.brilliant.com.commutech.Home">
<android.support.constraint.ConstraintLayout
android:layout_marginBottom="152dp"
android:layout_marginLeft="32dp"
android:layout_marginRight="32dp"
android:layout_marginTop="96dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
android:layout_height="0dp"
android:layout_width="0dp"
>
<android.support.v4.view.ViewPager
android:id="@+id/view_pager"
android:layout_width="0dp"
android:layout_height="0dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
/>
<Button
android:id="@+id/button2"
android:layout_width="0dp"
app:layout_constraintHeight_default="percent"
app:layout_constraintHeight_percent=".333"
app:layout_constraintWidth_default="percent"
app:layout_constraintWidth_percent=".333"
android:layout_height="0dp"
android:text="Button"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent"
/>
</android.support.constraint.ConstraintLayout>
</android.support.constraint.ConstraintLayout>
.333是父母的33.3%,几乎等于三分之一。
额外的布局是为viewpager和按钮添加一个容器,因为当片段可见时,使用viewpager作为容器会导致按钮隐藏。您发布的布局有多个
标记,但您的问题似乎只涉及一个按钮。你能不能附上一张你想要的布局的图片?或者澄清这些额外按钮的用途?你能分享一下你的布局截图吗?这样我就可以很容易地理解了。@BenP。我用截图更新了我的问题。@MehulKabaria我更新了我的question@RuslanLeshchenko:共享您想要的版面?您发布的版面有多个
标记,但您的问题似乎只涉及一个按钮。你能不能附上一张你想要的布局的图片?或者澄清这些额外按钮的用途?你能分享一下你的布局截图吗?这样我就可以很容易地理解了。@BenP。我用截图更新了我的问题。@MehulKabaria我更新了我的question@RuslanLeshchenko:共享您想要的布局?